FDC1004QDGSRQ1

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FDC1004QDGSRQ1

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IC CAPACITIVE SENSING 4CH 10VSSO

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Especificações

Atributo Valor
Supplier Texas Instruments
Package / Case Tape & Reel (TR),Cut Tape (CT)
Series Automotive, AEC-Q100
Part Status Active
Type Proximity Detector
Proximity Detection Yes
Number of Inputs 4
Interface I²C
Resolution 16 b
Voltage - Supply 3V ~ 3.6V
Supply Current 750µA
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount

Visão Geral

Description

FDC1004QDGSRQ1 is Texas Instruments’ automotive-grade, 4-channel capacitive-to-digital converter. It measures capacitance changes on four independent sensor electrodes and reports digital results over I2C. Designed for capacitive sensing tasks such as touch buttons, proximity sensing, and liquid-level or position sensing in automotive and consumer electronics, it offers baseline tracking and auto-calibration to compensate drift, plus programmable averaging and update rates. Features typically include shielded-sensing support, low-power modes, integrated drive circuitry, and a sigma-delta ADC, enabling single-supply operation. The QDGSRQ1 suffix indicates the automotive-grade variant and package. To use, connect each sensor to a channel, configure sensing parameters via registers, and read results (with optional interrupts) over I2C.

Equivalent

TI does not have an exact drop-in equivalent to FDC1004QDGSRQ1. Closest TI alternatives: FDC1008 (8-channel) and FDC2214 (4-channel, high resolution). For non-TI options, Analog Devices’ AD7746/AD7745 are common equivalents. Always verify package, I2C interface, channel count, and metrology before design-in.

Features

FDC1004QDGSRQ1 features (concise):
- Four independent capacitive sensing channels
- I2C digital interface (multi-device capable on same bus)
- Programmable measurement rate and modes (continuous or one-shot)
- Baseline tracking and auto-calibration for drift/noise reduction
- High-resolution, low-noise capacitance measurements
- Low-power operation with sleep/standby modes
- Internal oscillator and stable reference
- Wide supply range suitable for common MCU VDD levels
- Small QFN package (QDGSRQ1) for compact designs
- Interrupt/status reporting for efficient firmware handling
Note: exact electrical specs (e.g., resolution, conversion time, and full-scale range) are defined in the datasheet.

Pinout

- Pin count: 24 pins (QFN package, FDC1004QDGSRQ1).
- Function: Four-channel capacitive-to-digital converter with shield support; measures capacitance on four inputs (CH1–CH4 with SH1–SH4) and reports results over I2C (SCL/SDA) with VDD, GND, and ADDR control pins.

Manufacturer

- Manufacturer: Texas Instruments (TI).
- What kind of company: A global American semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing ICs and related products for automotive, industrial, consumer, and communications markets.

Application

Applications of FDC1004QDGSRQ1 (4‑channel capacitive-to-digital converter):
- Capacitive touch sensing: buttons, sliders, wheels, touch pads
- Proximity sensing for non-contact user interfaces
- Liquid level sensing in tanks/containers
- Dielectric/material sensing (moisture, material identification)
- Embedded sensing in consumer electronics, automotive interiors, and industrial equipment (compact, multi-channel, I2C-capable)

Package

It uses a 16‑pin VQFN (4×4 mm) package.

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