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FDC2114RGHT

4-Ch, 12-bit, capacitance to digital converter

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

FDC2114RGHT
Datasheet:

FDC2114RGHT Datasheet (PDF)
Programmable:

Not Verified
Type:

Proximity Only
Proximity Detection:

Yes
Number of Inputs:

4
EDA/CAD Models:

Request Free CAD Models for FDC2114RGHT

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FDC2114RGHT General Description

Capacitive sensing is a low-power, low-cost, high-resolution contactless sensing technique that can be applied to a variety of applications ranging from proximity detection and gesture recognition to 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 main challenge limiting sensitivity in capacitive sensing applications is noise susceptibility of the sensors. With the FDC2x1x innovative EMI resistant architecture, performance can be maintained even in presence of high-noise environments.

The FDC2x1x is a multi-channel family of noise- and EMI-resistant, high-resolution, high-speed capacitance-to-digital converters for implementing capacitive sensing solutions. The devices employ an innovative narrow-band based architecture to offer high rejection of noise and interferers while providing high resolution at high speed. The devices support a wide excitation frequency range, offering flexibility in system design. A wide frequency range is especially useful for reliable sensing of conductive liquids such as detergent, soap, and ink.

The FDC221x is optimized for high resolution, up to 28 bits, while the FDC211x offers fast sample rate, up to 13.3ksps, for easy implementation of applications that use fast moving targets. The very large maximum input capacitance of 250 nF allows for the use of remote sensors, as well as for tracking environmental changes over time, temperature and humidity.

The FDC2x1x family targets proximity sensing and liquid level sensing applications for any type of liquids. For non-conductive liquid level sensing applications in the presence of interferences such as human hands, the FDC1004 is recommended, which has integrated active shield drivers.

Key Features

EMI-Resistant Architecture
Maximum Output Rates (one active channel):
- 13.3 ksps (FDC2112, FDC2114)
- 4.08 ksps (FDC2212, FDC2214)
Maximum Input Capacitance: 250 nF (at 10 kHz
with 1 mH inductor)
Sensor Excitation Frequency: 10 kHz to 10 MHz
Number of channels: 2, 4
Resolution: up to 28 bits
System Noise Floor: 0.3 fF at 100 sps
Supply Voltage: 2.7 V to 3.6 V
Power Consumption: Active: 2.1 mA
Low-Power Sleep Mode: 35 µA
Shutdown: 200 nA
Interface: I²C
Temperature range: –40°C to +125°C

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	12 b	Voltage - Supply	2.7V ~ 3.6V
Current - Supply	2.1mA	Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount	Base Product Number	FDC2114
Number of input channels	4	Features	EMI-resistant
Operating temperature range (°C)	-40 to 125	Vs (max) (V)	3.6
Interface type	I2C	Resolution (Bits)	12
Rating	Catalog	feature-sensor-type	Digital Sensor
feature-adc-resolution-bit	28	feature-interface-type	I2C
feature-process-technology		feature-input-type
feature-output-type	Digital	feature-minimum-operating-supply-voltage-v	2.7
feature-maximum-operating-supply-voltage-v	3.6	feature-typical-operating-supply-voltage-v	3.3
feature-packaging	Tape and Reel	feature-rad-hard
feature-pin-count	16	feature-cecc-qualified
feature-esd-protection		feature-military	No
feature-aec-qualified	No	feature-aec-qualified-number
feature-eccn-code	EAR99	feature-svhc	Yes
feature-svhc-exceeds-threshold	No