| PGA |
1~256 |
| INTN/GPIO |
2 |
| Watch Dog |
YES |
| MCU |
/ |
| DAC (bit) |
12 |
| CTRL IF |
I²C |
| Low Power Mode |
YES |
| Channel |
2 |
| Temperature |
-40℃~105℃ |
| Package (mm) |
WLCSP 1.41X1.41-16B |
| ADC (bit) |
14 |
2 analog input differential channel
Selectable Gains of 1,8,16, 32, 64, 128, 256
150K/200K SPS 14-bit SAR ADC
12-bit offset calibration DAC
Ultra-low PGA noise
Support 400KHz/1MHz I²C
Support 1.2V/1.8V/3.3V I²C
1 smart watch dog timer(SWDT)
Support Temperature Sense
Up to 2 INTN OD output pins
Up to 2 PWM output pins
Power-on reset
Low power-consumption mode
Built-in digital filter
Built-in baseline-tracking algorithm for force touch
Optional application mode (upload AFE data / report press pulse)
AW8687x is an AFE chip that can be used to collect, amplify, and process voltage signals. It integrated 1 I²C module, 1 system control module, 1 power management module and 1 AFE module (Include level 2 PGA, 12-bit offset calibration DAC, 14-bit SAR ADC).
From the number of pins, there are two types of AW8687x. AW86872 can measures two pairs of differential analog inputs (AINP, AINN) in direct connection or buffered through the PGA. AW86874 can measures four pairs of differential analog inputs (AINP, AINN) in direct connection or buffered through the PGA.
AW8687x can enter low power consumption mode automatically without the master participation and trigger AFE work through SWDT wake-up to sample and process the signal.
AW8687x can be used for force touch. We provide users with baseline tracking and pressure recognition modules to facilitate the identification of pressing force and signals. Interrupt signals such as sampling completion, threshold comparison and press event trigger can be configured to output through interrupt pin.
The number of channels and package type of AW8687x series chips are as folows.
Chip Chip ID Channel Package
AW86874CSR 0x74 4 WLCSP 1.41mmX1.41mmX0.34mm-16B
AW86872CSR 0x72 2 WLCSP 1.41mmX1.41mmX0.34mm-16B
AW86872QNR 0x72 2 WBQFN3mmX3mmX0.75mm-16L
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