| PGA |
1~256 |
| INTN/GPIO |
2 |
| Watch Dog |
YES |
| MCU |
/ |
| DAC (bit) |
12 |
| CTRL IF |
I²C |
| Low Power Mode |
YES |
| Channel |
4 |
| Temperature |
-40℃~105℃ |
| Package (mm) |
WLCSP 1.41X1.41-16B |
| ADC (bit) |
14 |
4 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)
WLCSP 1.41mmX1.41mmX0.34mm-16B package
AW86874 is a chip of force touch AFE, which has the functions of pressure sensing signal acquisition, amplification and processing. It integrated 1 I²C module, 1 system control module, 1 power management module and 1 AFE module (Include 4 analog input differential channel and MUX, level 2 PGA, 12-bit offset calibration DAC, 14-bit ADC).
AW86874 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. Interrupt signals such as sampling completion, threshold comparison and press event trigger can be configured to output through interrupt pin.
AW86874 can be used as AFE to provide the collected raw data for pressing. It can also be used as a pressure recognition module to provide the master with pressing flags.
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