ADC Replacement for MAX1302/MAX1300 and LTC2372 The GX2372

GX2372 is an 8-channel, 16-bit, SAR analog-to-digital converter (ADC) powered by a single VDD supply. The GX2372 incorporates all of the components required for a multi-channel, low-power data acquisition system, including a lossless 16-bit SAR ADC, low crosstalk 8-channel multiplexer, low-drift 4.096V reference and buffer, temperature sensor, selectable unipolar filters, and sequence generator for sequential continuous scanning channels.

The GX2372 uses an SPI interface to read and write to the configuration registers. The SPI interface is powered by a separate VIO supply. The GX2372 is packaged in a QFN-20 package and operates at temperatures ranging from -40°C to +125°C. 

Key GX2372 Features: 

1. Resolution: 16-bit, 8-channel multiplexer with selectable inputs, unipolar single-ended inputs, differential inputs (using reference ground ), pseudo-bipolar inputs, fully differential inputs 

2, Sample Rate: 500kSPS; SNR: 90.8dB@1kHz, 90.1dB@20kHz 

3, Analog Input Range: 0V to VREF (VREF up to VDD) 

4, Multiple Reference Source Types: Internal 4.096V Reference Source, External Buffered Reference Source (up to 4.096 V), External Reference Source ( up to VDD) 

5. Built-in temperature sensor, built-in channel sequencer, optional unipolar filter, busy indication 

6. Supply voltage: single supply 5V, logic interface voltage: 1.8V to 5V 

7. Serial interface, compatible with SPI, MICROWIRE, QSPI, and DSP 

8. Power consumption: 8.3mW@500kSPS, 1.8μW@100SPS, standby Current: 23 nA 

9, support for 4mm × 4mm QFN-20 package 

GX2372 Application Scenarios: Battery-powered devices, medical devices: ECG/EKG, personal digital assistants, power line monitoring, data acquisition, instrumentation, process control