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FDC2112-Q1 Datasheet(PDF) 1 Page - Texas Instruments

Part # FDC2112-Q1
Description  Multi-Channel 12-Bit or 28-Bit Capacitance-to-Digital Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

FDC2112-Q1 Datasheet(HTML) 1 Page - Texas Instruments

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IN0A
IN0B
IN3A
IN3B
FDC2114 / FDC2214
VDD
GND
SCL
SDA
Int. Osc.
ADDR
INTB
SD
GND
MCU
VDD
3.3 V
3.3 V
GPIO
GPIO
0.1 F 1 F
Core
Resonant
circuit driver
Resonant
circuit driver
I
2C
I
2C
peripheral
3.3 V
L
Cap Sensor 0
CLKIN
40 MHz
L
Cap Sensor 3
Copyright © 2016, Texas Instruments Incorporated
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
FDC2112-Q1, FDC2114-Q1, FDC2212-Q1, FDC2214-Q1
SNOSCZ9 – MAY 2016
FDC2112-Q1, FDC2114-Q1, FDC2212-Q1, FDC2214-Q1 Multi-Channel 12-Bit or 28-Bit
Capacitance-to-Digital Converter (FDC) for Capacitive Sensing
1
1 Features
1
Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
Device Temperature Grade 1:–40°C to +125°C
Ambient Operating Temperature Range
Device HBM ESD Classification Level 2
Device CDM ESD Classification Level C5
EMI-Resistant Architecture
Maximum Output Rates (One Active Channel):
13.3 ksps (FDC2112-Q1, FDC2114-Q1)
4.08 ksps (FDC2212-Q1, FDC2214-Q1)
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
RMS noise: 0.3 fF at 100 sps and fSENSOR = 5MHz
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
2 Applications
EMI-Resistant Proximity Sensor
EMI-Resistant Gesture Recognition
EMI-Resistant Foreign Object Detection
EMI-Resistant Rain / Fog / Ice / Snow Sensor
Automotive Door / Kick Sensors
3 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 to gesture recognition. 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-Q1
innovative
EMI
resistant
architecture,
performance
can
be
maintained
even
in
presence
of
high-noise
environments.
The FDC2x1x-Q1 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
FDC2112-Q1
WSON (12)
4.00 mm × 4.00 mm
FDC2114-Q1
WQFN (16)
4.00 mm × 4.00 mm
FDC2212-Q1
WSON (12)
4.00 mm × 4.00 mm
FDC2214-Q1
WQFN (16)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic


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