2012/08/08, CoreView Technology mass-produced a series of 15KV ESD RS485 / RS422 interface communication chips AT3082E, AT3085E, AT3088E. The chips have been tested and used by end-customers such as China Test and other independent third-party testing agencies, electricity meter factories and other technical indicators. Fully meet the requirements for the use of State Grid electricity meters.

Device test report

purpose

Test 3085E performance

Number of tests

4PCS

testing time

2012-10-08 ～ 2012-10-08

Device name model

485 chip

Sample model

3085

Manufacturer

Sample lot number

test tools

Multimeter / static tester / group pulse tester / surge tester

Test content:

1, A, B port input resistance test

2. Common mode voltage range test

3. Driver short-circuit current protection test

4, anti-group pulse interference test

5. Static discharge test

6. Surge immunity test

1, A, B port input resistance test

Sample 1 Sample 2 Resistance 276.95KΩ277.32KΩ

2. Common mode voltage range test

-7V ~ 12V input AB port has not been damaged by large current.

The receiving waveform of -7V ~ 12V input AB port is normal.

3. Driver short-circuit current protection test

Sample 1 Sample 2 Sample 3 Sample 4 Driver protection current 260mA (5V) 250mA (5V) 290 (5.5V) 290 (5.5V) Test results are normal normal normal

4, group pulse interference test

Test phenotype and project test results Number of test samples HW1 group pulse test + 5KV communication is good, chip is not damaged 4PCS group pulse test-5KV communication is good, chip is not damaged 4PCS test conclusion damage rate 0%, judge OK

5. Static interference test

Ambient temperature 25 ℃ Ambient humidity 60 ~ 85% Test phenotype and project test results Test sample number HW1 static test + 11KV 200 times normal 4PCS static test -11KV 200 times normal 4PCS static test + 12KV 200 times normal 4PCS static test -12KV 200 HW1 table reset 2 times 4PCS test passed

6. Surge immunity test

Test phenotype and project test results Number of test samples HW1 surge immunity test + 2KV normal 2PCS surge immunity test-2KV test passed

The test report of Huatest Electrostatic Gun is as follows:

About Wuhan Xinjing Technology Co., Ltd. (AnalogTek)

     AnalogTek, headquartered in Optics Valley, Wuhan, China, designs and markets analog and mixed-signal chip products. Its product line includes real-time calendar clock RTC, white and color LED drivers, DC / DC converters, LDO regulators, and power monitoring. Controller, bus expander, LCD controller, satellite receiver LNB control chip, etc. Corechip's chip products are often used in industrial control and consumer electronics markets. Typical applications include LCM modules, LED lighting, electricity meters, MP3, handheld devices, satellite receiving LNBs, navigation systems, set-top boxes, and network routers. For more information about the company, please visit http://www.analogtek.com.cn;