Product Details
Part Number | GH7800 | GH7801 | GH7802 | |
|---|---|---|---|---|
WE Channels | 2 | 1 | 2 | |
Cap Sensor | Y | N | N | |
| Power Supply | Ag2O | Y | N | N |
| Lithium | Y | Y | Y | |
GH780X is a compact, high precision, low power electrochemical analog front end (AFE) that supports 2 , 3 , and 4 electrode electrochemical detection. It integrates a capacitive pressure sensor and a temperature sensor, and also supports an external NTC thermistor. The device is designed for applications such as continuous glucose monitoring (CGM) and sweat analysis.
High Accuracy and Precision
Three DACs, Max 12 bit, Bias from -700 mV ~ +700 mV, 0.3 mV resolution
Two 20-Bit ADCs, ENOB=18 bit
Current sensing range of 0.1 nA to 2 μA, RTI (rms) = 2 pA @ 3.2 MΩ* Gain
0.3 fF cap-sensing resolution with max 87 pF driving capacity for pressure sensing
Ultra Low Power
Supply Voltage Range: 1.35 V to 3.6 V, <20 nA in disabled mode
AFE IAVG 5 µA @ 1.5 V @ 1 sps
AFE IAVG 6.6 µA @ 3 V @ 1 sps
Others
Internal ±0.5 ℃ accuracy temperature sensor, support external NTC
CV, AVDD/CE Voltage detection, open-circuit measurement mode
Max 180 Samples Depth
SPI/IIC supported
QFN-24, 3.0 mm * 3.0 mm * 0.75 mm
WLCSP-25, 1.86 mm * 1.86 mm * 0.5 mm
Applictions
CGM
Sweat sensor
Part Number | GH7800 | GH7801 | GH7802 | |
|---|---|---|---|---|
WE Channels | 2 | 1 | 2 | |
Cap Sensor | Y | N | N | |
| Power Supply | Ag2O | Y | N | N |
| Lithium | Y | Y | Y | |
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