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    Parts    AD7147ACPZ-1500RL7
AD7147ACPZ-1500RL7

ADIAD7147ACPZ-1500RL7

Analog Devices Inc.
Capacitance-to-Digital Converter 16 b 250k I2C, Serial 24-LFCSP (4x4)
Active1,652 in stock
Datasheet Digi-Key Compare Prices

Overview

The AD7147ACPZ-1500RL7 from Analog Devices is a capacitance-to-digital converter (CDC) intended for capacitive touch and proximity sensing. The device provides 16-bit conversion and communicates over an I2C serial interface (250 kHz as listed). It is supplied in a 24-lead LFCSP (4x4) package suited for compact designs.

Why Choose This Part

This ADI CDC offers high-resolution 16-bit measurements for stable, repeatable capacitive sensing and fine-grained control of sensitivity and thresholds. Its integrated signal processing reduces MCU overhead and simplifies multi-electrode sensing designs. The small LFCSP package helps minimize PCB area for compact consumer or industrial products, and the I2C serial interface eases integration with common microcontrollers.

Applications

Capacitive buttons and touch panels
Directly sense touch or release events for user interfaces on appliances, consumer devices, and industrial controls.
Linear and rotary sliders
Implement multi-element sliders or wheels with high-resolution capacitive measurement for position sensing.
Proximity and presence detection
Detect hands or objects approaching a surface for wake-on-approach or safety interlocks.
Liquid and level sensing
Measure changes in capacitance for tank level, leak detection, or moisture sensing applications.
Human-machine interfaces in industrial equipment
Replace mechanical switches with sealed capacitive sensors that tolerate harsh environments and cleaning.

Key Specifications

Type Capacitance-to-Digital Converter
Mounting Type Surface Mount
Data Interface I2C, Serial
Package / Case 24-WFQFN Exposed Pad, CSP
Voltage - Supply 2.6V ~ 3.6V
Resolution (Bits) 16 b
Number of Channels 13
Operating Temperature -40degC ~ 85degC
Voltage Supply Source Single Supply
Supplier Device Package 24-LFCSP (4x4)
Sampling Rate (Per Second) 250k

Getting Started

Start by visiting Analog Devices product resources for the AD7147 to find datasheets, application notes, and any available evaluation kits or reference designs. Interface the part to a microcontroller over I2C and follow recommended PCB layout and decoupling guidelines from the datasheet; sample code and register descriptions on the ADI product page are useful for initial bring-up.

AD7147 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Data Interface Stock
AD7147ACPZ-1500RL7 (this part) I2C, Serial 1,652
AD7147ACPZ-500RL7 SPI 2,112
AD7147PACPZ-1500R7 I2C, Serial 308
AD7147PACPZ-RL Reel SPI —
Also available as: AD7147ACPZ-REEL

Also Consider

CAP1188 MCHPMicrochip Technology - Multi-channel capacitive touch controller used in compact touch-sensor applications.
AD7150 Analog Devices - Analog Devices capacitance-to-digital converter for simpler multi-channel capacitive-sensing needs.