AW86872QNR

14Bit,200Ksps,Low-power AFE with I2C Interface

Datasheet :

Product details

Parameters

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)	QFN 3X3-16L
ADC (bit)	14

Package | Pins | Size

QFN 3X3-16L

Features

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)

Description

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

Technical documentation

	Type	Title		Language		Date
	Product Design Guide	AW8687X Software Design Guide		英文		2024-04-30
	Datasheet	DS_AW8687x_EN_V1.2		英文		2025-03-21

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

Evaluation board

AW86874QNR_EVB_DB_V1.0 — AW86874QNR_EVB_DB_V1.0 is a daughter board of the Aiwei Force Touch EVB Evaluation Board. When combined with the motherboard and pressure sensor, can achieve single-chip functional evaluation.

EVB evaluation daughter board for Force Touch. Adapt to Force Touch_EVB_V1.1

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Software development

APPLICATION SOFTWARE&FRAMEWORK

AW8687X_GUI — AW8687X Tunning Tool

AW8687X GUI is a highly integrated and easy-to-use tool for product configuration and debugging. Intuitive interface and user-friendly operation can help customers shorten development cycle and complete system integration quickly.

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APPLICATION SOFTWARE&FRAMEWORK

AW8687X_APK —

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DRIVER OR LIBRARY

AW8687X_Driver_MCU_V0.2.0 — MCU Driver for AW8687X

AW8687X Driver,includeing sample code,porting guide,debugging guide etc

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Hardware development

Evaluation board

EVB evaluation daughter board for Force Touch. Adapt to Force Touch_EVB_V1.1

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Software development

APPLICATION SOFTWARE&FRAMEWORK

AW8687X_GUI — AW8687X Tunning Tool

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APPLICATION SOFTWARE&FRAMEWORK

AW8687X_APK —

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DRIVER OR LIBRARY

AW8687X_Driver_MCU_V0.2.0 — MCU Driver for AW8687X

AW8687X Driver,includeing sample code,porting guide,debugging guide etc

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