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See Technical Specifications

FDC1004DSCT

4-Ch, 16-bit, capacitance to digital converter with active shield driver

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

FDC1004DSCT
Datasheet:

FDC1004DSCT Datasheet (PDF)
Programmable:

Not Verified
Type:

Proximity Only
Proximity Detection:

Yes
Number of Inputs:

4
EDA/CAD Models:

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FDC1004DSCT General Description

Capacitive sensing with grounded capacitor sensors is a very low-power, low-cost, high-resolution contact-less sensing technique that can be applied to a variety of applications ranging from proximity sensing and gesture recognition to material analysis and remote liquid level sensing. The sensor in a capacitive sensing system is any metal or conductor, allowing for low cost and highly flexible system design.

The FDC1004 is a high-resolution, 4-channel capacitance-to-digital converter for implementing capacitive sensing solutions. Each channel has a full scale range of ±15 pF and can handle a sensor offset capacitance of up to 100 pF, which can be either programmed internally or can be an external capacitor for tracking environmental changes over time and temperature. The large offset capacitance capability allows for the use of remote sensors.

The FDC1004 also includes shield drivers for sensor shields, which can reduce EMI interference and help focus the sensing direction of a capacitive sensor. The small footprint of the FDC1004 allows for use in space-constrained applications. The FDC1004 is available in a 10-pin WSON and VSSOP package and features an I²C interface for interfacing to an MCU.

Key Features

Input Range: ±15 pF
Measurement Resolution: 0.5 fF
Maximum Offset Capacitance: 100 pF
Programmable Output Rates: 100/200/400 S/s
Maximum Shield Load: 400 pF
Supply Voltage: 3.3 V
Temp Range: –40° to 125°C
Current Consumption:
- Active: 750 µA
- Standby: 29 µA
Interface: I²C
Number of Channels: 4

Specifications

Category	Integrated Circuits (ICs)InterfaceSensor, Capacitive Touch	Series	-
Programmable	Not Verified	Type	Proximity Only
Proximity Detection	Yes	Number of Inputs	4
LED Driver Channels	-	Interface	I²C
Resolution	16 b	Voltage - Supply	3V ~ 3.6V
Current - Supply	750µA	Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount	Base Product Number	FDC1004