ATE interface standard general line and FT test system connected with ATE interface standard general line

Abstract

The invention provides an ATE interface standard universal line and an FT test system connected with the ATE interface standard universal line, and relates to the field of semiconductor integrated circuit testing. The standard universal line based on the ATE interface comprises an ATE PC end backboard, a test head and a DUT adapter, the ATE PC end backboard is electrically connected with a first interface and a second interface, the first interface is connected with a first standard universal cable, and the second interface is connected with a second standard universal cable; the testing head is connected with a third standard general cable; the DUT adapter is electrically connected with a third interface and a fourth interface, the fourth interface is provided with a plurality of independent interfaces, and each independent interface of the fourth interface is connected with a cable for testing; and the cable for testing is matched with each independent interface of the fourth interface and the gravity separator. Through the use of the DUT adapter, the ATE interface standard universal line can independently replace the adapter according to the type of the DUT, and the plugging frequency of the ATE interface standard universal line is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of semiconductor integrated circuit testing, in particular to an ATE interface standard universal line and an FT test system connected therewith. BACKGROUND

[0002] FT test (Final Test): also known as final test, is a test step after chip packaging. The FT test tests the function, performance and reliability of the chip under actual working conditions through the pins after packaging. The "standard universal line" (usually refers to a universal interface board, a universal connector or a universal cable bundle) in the ATE (automatic test equipment) interface aims to improve flexibility, reduce cost and simplify maintenance.

[0003] However, in actual application, the DUT (device under test) has multiple models, and the interfaces of each model are different. The universal interface usually needs to be frequently plugged in and out (replace the DUT or the adapter). The plugging life of the connector (especially high-density and multi-pin) is limited, and excessive use will cause pin wear, increased contact resistance, and even pin bending or breaking, introducing intermittent faults or permanent connection problems. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, the present application provides an ATE interface standard universal line and an FT test system connected therewith, which solves the problem that the universal interface needs to be replaced according to the model of the DUT, and the DUT and the adapter are frequently plugged in and out, causing the pins to be damaged.

[0006] (II) Technical solutions

[0007] In order to achieve the above object, the application is implemented by the following technical scheme: a kind of ATE interface standard universal line, including ATE PC backplane, test head and DUT adapter, the first interface and the second interface are electrically connected to the ATE PC backplane, the signal of the first interface is led out to the second interface by the ATE PC backplane, the first interface is connected with the first standard universal cable, the second interface is connected with the second standard universal cable;The test head is connected with the second standard universal cable, the ATE PC backplane and test head are adapted with the second standard universal cable, the test head is connected with the third standard universal cable;The third interface and the fourth interface are electrically connected to the DUT adapter, the third interface is connected with the third standard universal cable, the fourth interface is equipped with multiple independent interfaces, the signal of the third interface is led out to each independent interface of the fourth interface by the DUT adapter, each independent interface of the fourth interface is respectively connected with test cable, and the connection of the test cable with each independent interface of the fourth interface does not need to be disassembled;The first standard universal cable is adapted with the ATE PC backplane and ATE PC, the second standard universal cable can be connected with the second interface by disassembly, the third standard universal cable can be connected with the third interface by disassembly, the connection of the second standard universal cable and the third standard universal cable with the test head does not need to be disassembled, and the test cable is adapted with each independent interface of the fourth interface and gravity sorting machine.

[0008] Preferably, the DUT adapter is composed of an upper cover, a lower shell, an RF adapter, a digital adapter, an analog adapter and a power adapter, a support plate is welded on the bottom of the lower shell, a heat dissipation channel is arranged between the support plate and the bottom of the lower shell, a plurality of hollow partition plates are equidistantly welded on the upper end of the support plate, lower limit plates are welded on both ends of the support plate, the partition plates pass through the lower limit plates and are fixedly connected with the lower limit plates, the RF adapter, the digital adapter, the analog adapter and the power adapter are arranged on the upper end of the support plate, and the lower limit plates are respectively located at the front and rear of the RF adapter, the digital adapter, the analog adapter and the power adapter, the plurality of partition plates separate the RF adapter, the digital adapter, the analog adapter and the power adapter, the third standard universal cable is connected with the interfaces of the RF adapter, the digital adapter, the analog adapter and the power adapter, the upper cover is arranged on the upper end of the lower shell, a hinge is arranged on one end of the upper cover, the upper cover is hinged to the lower shell through the hinge, a fixing bolt is arranged on the upper end of the upper cover, and the fixing bolt is located on the side of the upper cover away from the hinge, a threaded sleeve is welded on the surface of the lower shell and is threadedly connected with the fixing bolt, upper limit plates are welded on the lower end of the upper cover and are respectively located at the front and rear of the upper cover, a plurality of sleeves are welded on the upper end of the upper cover and pass through the upper cover, the sleeves are arranged above the middle portions of the RF adapter, the digital adapter, the analog adapter and the power adapter, the sleeves are provided with external thread grooves, the top portions of the sleeves are provided with compression knobs, the compression knobs are provided with internal threads matched with the external thread grooves of the sleeves, middle portions of the lower ends of the compression knobs are fixedly connected with telescopic rods, the telescopic rods extend to the lower end of the upper cover through the sleeves, the telescopic rods are slidingly connected with the sleeves in external surface, springs are arranged on the inner walls of the sleeves, the telescopic rods pass through the middle portions of the springs, and the springs surround the telescopic rods, the lower ends of the telescopic rods are fixedly connected with pressing plates, and the lower ends of the springs are matched with the pressing plates, the pressing plates matched with the sleeves respectively apply downward pressure to the upper ends of the RF adapter, the digital adapter, the analog adapter and the power adapter, each independent interface of the fourth interface is matched with the RF adapter, the digital adapter, the analog adapter and the power adapter, and test cables connected with the independent interfaces of the fourth interface are matched with the RF adapter, the digital adapter, the analog adapter and the power adapter.

[0009] Preferably, the standard universal cable can be branched into a special coaxial cable connected with the RF adapter, a high-speed cable connected with the digital adapter, a shielded twisted pair connected with the analog adapter and a wire connected with the power adapter.

[0010] Preferably, the support plate is a sieve plate structure provided with a plurality of through holes on the surface.

[0011] An FT test system, comprising an ATE tester, a test head, a DUT adapter and a gravity sorter, the ATE tester is installed with an ATE PC end backboard, the ATE PC end backboard, the test head, the DUT adapter and the gravity sorter are connected in sequence through the ATE interface standard universal line of claim 1.

[0012] Preferably, the test interface of the gravity sorter has a plurality of, and the DUT adapter is connected to the plurality of test interfaces of the gravity sorter.

[0013] (Three) beneficial effects

[0014] The application provides an ATE interface standard universal line and an FT test system connected therewith.

[0015] 1、The DUT adapter composed of the upper cover, the lower shell, the RF adapter, the digital adapter, the analog adapter and the power adapter, so that the staff only needs to select the appropriate model of the RF adapter, the digital adapter, the analog adapter and the power adapter according to the device under test, and replace them when needed, and only need to pull out the third standard universal line from the third interface of the DUT adapter and the test cable from the test interface of the gravity sorter, so as to reduce the plugging frequency of the ATE interface standard interface universal line.

[0016] 2、The DUT adapter composed of the upper cover, the lower shell, the RF adapter, the digital adapter, the analog adapter and the power adapter, so that each adapter is independently powered and grounded, solving the common mode noise problem.

[0017] 3、The upper cover and the lower shell are quickly connected after being closed, and the cooperation of the compression knob, the telescopic rod, the spring, the sleeve and the pressing plate fixes each adapter in the lower shell, avoids the shaking of each adapter in the lower shell, and drives the movement of the ATE interface standard universal line, resulting in the loosening of the joint. DETAILED DESCRIPTION

[0018] Figure 1 It is a connection schematic diagram of the ATE tester and the gravity sorter in the prior art;

[0019] Figure 2 It is a structure schematic diagram of the ATE interface standard universal line proposed by the application;

[0020] Figure 3 It is a perspective schematic diagram of the DUT adapter of the ATE interface standard universal line proposed by the application;

[0021] Figure 4A front view of a DUT adapter of a standard universal line of an ATE interface according to the present application;

[0022] Figure 5 A perspective view of a lower shell of a DUT adapter of a standard universal line of an ATE interface according to the present application;

[0023] Figure 6 A perspective view of an upper cover of a DUT adapter of a standard universal line of an ATE interface according to the present application;

[0024] Figure 7 A schematic view of an FT test system according to the present application.

[0025] Wherein, 1, a first standard universal cable; 2, an ATE PC end backplane; 3, a second standard universal cable; 4, a third standard universal cable; 5, a DUT adapter; 6, a test cable; 7, a first interface; 8, a second interface; 9, a test head; 10, a third interface; 11, a fourth interface; 12, an upper cover; 13, a fixing bolt; 14, a lower shell; 15, an RF adapter; 16, a digital adapter; 17, an analog adapter; 18, a power adapter; 19, a hinge; 20, a compression knob; 21, a support plate; 22, a heat dissipation channel; 23, a partition plate; 24, an extension rod; 25, a spring; 26, a sleeve; 27, a pressing plate; 28, a lower limit plate; 29, an upper limit plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0027] As Figures 1-7As shown, the embodiment of the present application provides a kind of ATE interface standard universal line, including ATE PC end backplane 2, test head 9 and DUT adapter 5, ATE PC end backplane 2 electrically connected with first interface 7 and second interface 8, ATE PC end backplane 2 leads out the signal of first interface 7 to second interface 8, first interface 7 is connected with first standard universal cable 1, second interface 8 is connected with second standard universal cable 3;Test head 9 is connected with second standard universal cable 3, ATE PC end backplane 2 and test head 9 are adapted with second standard universal cable 3, test head 9 is connected with third standard universal cable 4;DUT adapter 5 is electrically connected with third interface 10 and fourth interface 11, third interface 10 is connected with third standard universal cable 4, fourth interface 11 is equipped with multiple independent interfaces, DUT adapter 5 leads out the signal of third interface 10 to each independent interface of fourth interface 11, each independent interface of fourth interface 11 is respectively connected with test cable 6, the connection of test cable 6 and each independent interface of fourth interface 11 does not need to be disassembled;First standard universal cable 1 is adapted with ATE PC end backplane 2 and ATE PC, second standard universal cable 3 can be connected with second interface 8 disassembled, third standard universal cable 4 can be connected with third interface 10 disassembled, the connection of second standard universal cable 3 and third standard universal cable 4 and test head 9 all does not need to be disassembled, test cable 6 is adapted with each independent interface of fourth interface 11 and gravity sorting machine.

[0028] The DUT adapter 5 is composed of an upper cover 12, a lower shell 14, an RF adapter 15, a digital adapter 16, an analog adapter 17 and a power adapter 18, a support plate 21 is welded at the bottom of the lower shell 14, a heat dissipation channel 22 is arranged between the support plate 21 and the bottom of the lower shell 14, a plurality of hollow partition plates 23 are equidistantly welded at the upper end of the support plate 21, lower limit plates 28 are welded at both ends of the support plate 21, and the partition plates 23 pass through the lower limit plates 28 and are fixedly connected with the lower limit plates 28, the RF adapter 15, the digital adapter 16, the analog adapter 17 and the power adapter 18 are arranged on the upper end of the support plate 21, and the lower limit plates 28 are located at the front and rear of the RF adapter 15, the digital adapter 16, the analog adapter 17 and the power adapter 18, respectively, the plurality of partition plates 23 separate the RF adapter 15, the digital adapter 16, the analog adapter 17 and the power adapter 18, the third standard universal cable 4 is connected with the interfaces of the RF adapter 15, the digital adapter 16, the analog adapter 17 and the power adapter 18, respectively, the upper cover 12 is arranged at the upper end of the lower shell 14, a hinge 19 is arranged at one end of the upper cover 12, and the upper cover 12 is hingedly connected with the lower shell 14 through the hinge 19, a fixed bolt 13 is arranged at the upper end of the upper cover 12, and the fixed bolt 13 is located at the side of the upper cover 12 away from the hinge 19, a screw sleeve that is threadedly connected with the fixed bolt 13 is welded on the surface of the lower shell 14, an upper limit plate 29 is welded at the lower end of the upper cover 12, and the upper limit plate 29 is located at the front and rear of the upper cover 12, respectively, a plurality of sleeves 26 are welded at the upper end of the upper cover 12, and the sleeves 26 pass through the upper cover 12 at the bottom, the sleeves 26 are located above the middle of the RF adapter 15, the digital adapter 16, the analog adapter 17 and the power adapter 18, respectively, the sleeves 26 are provided with external thread grooves, a compression knob 20 is arranged at the top of the sleeves 26, the compression knob 20 is provided with internal threads matched with the external thread grooves of the sleeves 26, a telescopic rod 24 is fixedly connected with the lower end of the compression knob 20, the telescopic rod 24 extends to the lower end of the upper cover 12 through the sleeves 26, and the telescopic rod 24 is slidingly connected with the sleeves 26, a spring 25 is arranged at the top of the inner wall of the sleeves 26, the telescopic rod 24 passes through the middle of the spring 25, and the spring 25 surrounds the telescopic rod 24, a pressing plate 27 is fixedly connected with the lower end of the telescopic rod 24, and the spring 25 is matched with the pressing plate 27 at the lower end, the pressing plates 27 matched with the plurality of sleeves 26 apply downward pressure to the upper ends of the RF adapter 15, the digital adapter 16, the analog adapter 17 and the power adapter 18, respectively, each independent interface of the fourth interface 11 is matched with the RF adapter 15, the digital adapter 16, the analog adapter 17 and the power adapter 18, respectively, and test cables 6 connected with the independent interfaces of the fourth interface 11 are matched with the RF adapter 15, the digital adapter 16, the analog adapter 17 and the power adapter 18, respectively, the cooperation of the compression knob 20, the telescopic rod 24, the spring 25, the sleeves 26 and the pressing plates 27 fixes the adapters in the lower shell 14, so that the adapters are prevented from shaking in the lower shell 14,And drive ATE interface standard general line movement, resulting in loose joints.

[0029] Standard general cable can be out of the special coaxial cable connected with RF adapter 15, high-speed cable connected with digital adapter 16, shielded twisted pair connected with analog adapter 17 and wire connected with power adapter 18, using special cable with adapter, avoiding affecting the performance of ATE interface standard general line.

[0030] Support plate 21 is a sieve plate structure with a plurality of through holes on the surface, so that the bottom of each adapter is in contact with air for heat dissipation.

[0031] Working principle: according to the type of the device to be measured, select RF adapter 15, digital adapter 16, analog adapter 17 and power adapter 18, unscrew the fixing bolt 13, lift the upper cover 12, then put the RF adapter 15, digital adapter 16, analog adapter 17 and power adapter 18 on the support plate 21 of the lower shell 14, then close the upper cover 12 and fix it with the fixing bolt 13, and rotate the compression knob 20 on the sleeve 26, so that the compression knob 20 pushes the telescopic rod 24 downward, and the compression plate 27 pushes the telescopic rod 24 to shrink, so that the spring 25 pushes the compression plate 27 to press the adapter downward on the support plate 21, then connect the special coaxial cable, shielded twisted pair, wire and special cable in the third standard general cable 4 with the third interface 10 of the RF adapter 15, digital adapter 16, analog adapter 17 and power adapter 18, and the fourth interface 11 of the RF adapter 15, digital adapter 16, analog adapter 17 and power adapter 18 is connected with the test cable 6 respectively.

[0032] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An ATE interface standard universal line, comprising an ATE PC end backplane, a test head and a DUT adapter, characterized in that: The ATE PC end backplane is electrically connected with a first interface and a second interface, the ATE PC end backplane leads out signals of the first interface to the second interface, the first interface is connected with a first standard universal cable, and the second interface is connected with a second standard universal cable; the test head is connected with the second standard universal cable, the ATE PC end backplate and the test head are matched with the second standard universal cable, and the test head is connected with a third standard universal cable; the DUT adapter is electrically connected with a third interface and a fourth interface, the third interface is connected with the third standard universal cable, the fourth interface is provided with a plurality of independent interfaces, the DUT adapter leads out signals of the third interface to each independent interface of the fourth interface, and each independent interface of the fourth interface is respectively connected with a test cable, and the connection between the test cable and each independent interface of the fourth interface does not need to be disassembled; the first standard universal cable is matched with the ATE PC end backplate and the ATE PC, the second standard universal cable can be connected in a detachable manner with the second interface, the third standard universal cable can be connected in a detachable manner with the third interface, the connection between the second standard universal cable and the third standard universal cable and the test head does not need to be disassembled, and the test cable is matched with each independent interface of the fourth interface and the gravity sorting machine.

2. An ATE interface standard universal line according to claim 1, characterized in that: The DUT adapter is composed of an upper cover, a lower shell, an RF adapter, a digital adapter, an analog adapter and a power adapter, a support plate is welded at the bottom of the lower shell, a heat dissipation channel is formed between the support plate and the bottom of the lower shell, a plurality of hollow partition plates are equidistantly welded at the upper end of the support plate, lower limit plates are welded at both ends of the support plate, the partition plates pass through the lower limit plates and are fixedly connected with the lower limit plates, the RF adapter, the digital adapter, the analog adapter and the power adapter are arranged on the upper end of the support plate, the lower limit plates are respectively located at the front and back of the RF adapter, the digital adapter, the analog adapter and the power adapter, and the plurality of partition plates separate the RF adapter, the digital adapter, the analog adapter and the power adapter, the third standard universal cable is connected with the interfaces of the RF adapter, the digital adapter, the analog adapter and the power adapter, the upper cover is arranged at the upper end of the lower shell, a hinge is arranged at one end of the upper cover, the upper cover is hingedly connected with the lower shell through the hinge, a fixing bolt is arranged at the upper end of the upper cover, the fixing bolt is located at the side of the upper cover away from the hinge, a threaded sleeve is welded on the surface of the lower shell and is threadedly connected with the fixing bolt, upper limit plates are welded at the lower end of the upper cover and are respectively located at the front and back of the upper cover, a plurality of sleeves are welded at the upper end of the upper cover and pass through the upper cover, the sleeves are arranged above the middle portions of the RF adapter, the digital adapter, the analog adapter and the power adapter, the sleeves are provided with external thread grooves, the top portions of the sleeves are provided with compression knobs, the compression knobs are provided with internal threads matched with the external thread grooves of the sleeves, middle portions of the lower ends of the compression knobs are fixedly connected with telescopic rods, the telescopic rods extend to the lower end of the upper cover through the sleeves and are slidingly connected with the sleeves, springs are arranged at the top ends of the inner walls of the sleeves, the telescopic rods pass through the middle portions of the springs, the springs surround the telescopic rods, the lower ends of the telescopic rods are fixedly connected with pressing plates, the lower ends of the springs are matched with the pressing plates, the pressing plates matched with the sleeves respectively apply downward pressure on the upper ends of the RF adapter, the digital adapter, the analog adapter and the power adapter, each independent interface of the fourth interface is matched with the RF adapter, the digital adapter, the analog adapter and the power adapter, and test cables connected with the independent interfaces of the fourth interface are matched with the RF adapter, the digital adapter, the analog adapter and the power adapter.

3. An ATE interface standard universal line according to claim 2, characterized in that: The standard universal cable can be branched into a special coaxial cable connected with the RF adapter, a high-speed cable connected with the digital adapter, a shielded twisted pair connected with the analog adapter and a wire connected with the power adapter.

4. An ATE interface standard universal line as defined in claim 2, wherein: The support plate is a sieve plate structure provided with a plurality of through holes on the surface.

5. An FT test system based on a standard interface line of ATE according to claims 1-4, characterized in that: The ATE tester is installed with an ATE PC end backboard, the ATE PC end backboard, the test head, the DUT adapter and the gravity sorting machine are connected in sequence through an ATE interface standard universal line.

6. The FT test system of claim 5, wherein: The test interface of the gravity separator has a plurality of test interfaces, and the DUT adapter connects the plurality of test interfaces of the gravity separator.

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