GX7606 analog-to-digital converter-based high-precision electrical parameter acquisition system, replacing AD7606

Currently, power system protection measurement and control equipment has high requirements for the measurement accuracy of multi-channel current and voltage, and the domestic analog-to-digital converter GX7606 (compatible with AD7606) has the features of good sampling synchronization, strong anti-jamming ability, high sampling accuracy, etc, which can fully satisfy the parameter requirements of this acquisition system.The GX7606 is suitable for the multichannel and high-precision acquisition scenarios as well as the relay protection scenarios, and it can well meet the The GX7606 is suitable for multi-channel, high-precision acquisition scenarios and relay protection scenarios, and can well meet the performance requirements of power systems.

The GX7606 is a synchronous sampling analog-to-digital converter with built-in analog input clamping protection, analog filters, and programmable gain amplifiers for each channel. The chip also integrates digital filters, a 3.5ppm/°C low-drift 2.5V precision reference voltage source and a 4.5V reference voltage buffer, and supports both parallel and serial interfaces.

Powered by a single 5V supply, the GX7606 offers throughput rates up to 200kSPS on all eight channels, supports ±10V and ±5V true bipolar input ranges, 1MΩ analog input impedance, and input clamping protection for voltages up to ±30V with an ESD rating of up to 8kV. For lower throughput applications, the GX7606‘s built-in oversampling modes and flexible digital filters can be used to improve noise performance. For applications requiring lower throughput rates, the GX7606‘s built-in oversampling mode and flexible digital filters can be used to improve noise performance.

GX7606 key features:

- Operating temperature range -40°C to +85°C, 5V single analog supply

- VDRIVE supply voltage 2.3V to 5V, ±30V input clamping protection

- 2nd order anti-alias analog filter, on-chip precision reference source and reference voltage source buffer

- True bipolar analog input range ±10V, ±5V, integrated digital filter oversampling function

- SNR 86dB (no oversampling) 95dB (64x oversampling)

- QFP-64 package 12mm x 12mm