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Renesas Electronics Components Datasheet

ZSSC3230 Datasheet

Capacitive Sensor Signal Conditioner

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Capacitive Sensor Signal
Conditioner IC
ZSSC3230
Datasheet
Description
The ZSSC3230 is a CMOS integrated circuit for accurate capaci-
tance-to-digital conversion and sensor-specific correction of
capacitive sensor signals. Digital compensation of sensor offset,
sensitivity, and temperature drift is accomplished via an internal
digital signal processor running a correction algorithm with
calibration coefficients stored in a nonvolatile, multiple-time
programmable (NVM) memory. Programming the ZSSC3230 is
simple via the serial interface. The interface is used for the PC-
controlled calibration procedure, which programs the set of
calibration coefficients in memory. The ZSSC3230 is configurable
for capacitive sensors with capacitances up to 30pF and will
provide an output resolution that is scalable up to 18-bit. It is
compatible with single-ended capacitive sensors. Measured and
corrected sensor values can be output as I2C (≤ 3.4MHz).
The ZSSC3230 provides accelerated signal processing, increased
resolution, and improved noise immunity in order to support high-
speed control, safety, and real-time sensing applications with the
highest requirements for energy efficiency.
Basic Application Diagram
VDD
VSS
VDD
VSS
C0
CC
C1
EOC
SCL
SDA
ZSSC3230
SCL
SDA
Features
Low current consumption: 1.3µA at 1 sample per second
Maximum target input capacitance: 30pF
Programmable capacitance span and offset
High sampling rate with 2ms at 14-bit resolution
ADC resolution: Adjustable in speed and resolution, 18-bit
maximum
Internal auto-compensated temperature sensor; not stress
sensitive
Programmable measurement sequence, single-shot and
automatic cycling of measurements with end-of-sequence
interrupt output
Oversampling modes using internal averaging
Interrupt features
Integrated NVM for configuration and free space for
customer use
Small die size
External reset pin (low active)
No external trimming components required
Highly integrated CMOS design
Physical Characteristics
Supply voltage VDD: 1.68V to 3.6V
Operating temperature: -40°C to 125°C depending on the part
code
I2C Interface compatible, supporting
Standard Mode(100kHz)
Fast Mode (400kHz)
High-Speed Mode (3.4MHz)
Capacitive input range 0 to 30pF
Capacitive offset compensation 0 to 15pF
Available in 4 4 mm2 24-PQFN package or as die
Typical Applications
Humidity sensors
Pressure sensors, level sensors
Smart, digital, capacitive sensors for energy-efficient solutions
Consumer / white goods (e.g., HVAC)
Medical applications
© 2019 Integrated Device Technology, Inc.
1
October 15, 2019


Renesas Electronics Components Datasheet

ZSSC3230 Datasheet

Capacitive Sensor Signal Conditioner

No Preview Available !

Block Diagram
VTP Temperature
Reference
VTN Sensor
C0
CC
Cmeasure
CC
Power-ON
Reset
ZSSC3230 Datasheet
AGND / CM
G enerat or
Vreg int
Bias Current
G enerat or
VDD
Voltage Regulator
Power Ctr.
VSS
ZSSC3230
Pre-Amplifier
A
D
18 Bit
DSP Core
(Calculations,
Communication)
EOC
PDM
SCL
SDA
RESQ
Clock
Generator
Ring
Oscillator
System
Control Unit
MTP
I2C
ROM
© 2019 Integrated Device Technology, Inc.
2
October 15, 2019



Part Number ZSSC3230
Description Capacitive Sensor Signal Conditioner
Maker Renesas
Total Page 3 Pages
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