ZSSC3281 PDF预览

ZSSC3281

更新时间: 2025-02-13 14:58:15
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瑞萨 - RENESAS /
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104页 1794K
描述
Dual Channel 24-Bit Resistive Sensor Signal Conditioner with Analog and Digital Output

ZSSC3281 数据手册

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Datasheet  
ZSSC3281  
Advanced Dual Channel ARM based Resistive Sensor Signal Conditioner IC  
The ZSSC3281 is a dual path sensor signal  
conditioning IC (SSC) for highly accurate  
Features  
Digital communication and calibration interfaces:  
SPI up to 10MHz  
I2C (Standard, Fast, Fast+) and I3C SDR  
One-wire-interface (OWI), up to 100kBit/s  
Accommodates nearly all resistive bridge sensor  
types (signal spans from 1mV/V up to 500mV/V)  
amplification, digitization, and sensor-specific  
correction of sensor signals. The ZSSC3281 is  
suitable for bridge and half-bridge sensors, as well as  
external voltage-source element and single-element  
sensors (for example, Pt100 and external temper-  
ature sensor diodes) powered by an on-chip current  
source. Digital compensation of the sensor offset,  
sensitivity, temperature drift, and non-linearity is  
accomplished via a 32-bit ARM M3 based math core  
running a correction algorithm with calibration  
coefficients stored in a non-volatile, reprogrammable  
memory. The programmable, integrated sensor front-  
end allows optimally applying various sensors for a  
broad range of applications.  
o
o
o
Supports  
different  
sensor  
element  
configurations:  
o
o
o
Resistive bridge or half-bridge  
Resistive divider string  
Voltage source  
On-chip temperature sensor  
External temperature sensing supported, for  
example, sensor-bridge as temperature detector,  
external diode, etc.  
Programmable 16-bit digital-to-analog-converter  
and output (supporting “True-0Volt-output):  
(0V to 1V) or (0V to 5V) absolute voltage  
output  
The ZSSC3281 provides measurement value  
readouts and programming capabilities via an I2C,  
SPI, or one-wire interface (OWI). Absolute and  
ratiometric voltage, current-loop, or interrupt outputs  
are supported by the ZSSC3281.  
o
o
o
o
VDD-ratiometric voltage output  
4mA to 20mA current-loop output supported  
0V to 10V absolute-voltage output supported  
Wide operational temperature and supply range  
On-chip voltage regulators for sensor supply,  
and IC operation  
Support for extra regulation by external  
transistor, for example, JFET (especially for  
industrial supply voltages >5.5VDC)  
Programmable sensor-signal-conditioning math  
core  
Applications  
Calibrated, continuously operating sensors with  
digital interface and/or analog output: (absolute or  
ratiometric) voltage or current loop output  
Enables smart, digital sensors for energy-efficient  
solutions  
(Dual/Diff.) pressure, flow and level sensing  
Industrial applications; for example,  
process/factory automation  
Reprogrammable, nonvolatile memory (NVM)  
On-chip diagnostics:  
Consumer / white goods, for example, HVAC,  
weight scales  
o Sensor connection  
o AFE self-test  
Medical applications, for example, blood  
pressure, continuous smart health monitors  
o Memory integrity  
TOP1, TOP2  
Text1  
VDD  
VDDD  
Voltage Regulator  
DAC  
Power Ctr.  
Bias  
Current  
Generator  
VSS,VSSD  
AGND / Guard  
CM Generator  
Temperature  
Reference  
Sensor  
Text2  
Text3  
AOUT / OWI1  
FB  
ZSSC3281  
INP1  
Sensor  
Bridge  
A
INN1  
INP2  
D
24Bit  
EOC/ALARM_1/2,  
PWM/FOUT_1/2  
CLOCK_OUT,  
ARM M3  
Pre-Amplifiers  
WAKEUP, RESN  
A
Sensor Signal Conditioning  
D
24Bit  
Sensor  
Bridge  
Measurement Sequencer  
SCLK/SCL  
MOSI/SDA  
SS  
MISO  
OWI-IN2  
SPI  
Configuration and  
Calibration NVM  
INN2  
I²C/  
I3C  
Command Interpreter  
System Diagnostics  
Firmware Update  
Clock  
Generator  
System  
Control  
Unit  
BOT1, BOT2  
Power-ON  
Reset  
OWI  
Ring  
Oscillators  
Figure 1. Typical Application Diagram  
Page 1  
© 2023 Renesas Electronics  
Rev. 1.1 FW Ver. 1.3.1  
Apr.19.23 R33DS0020ED0100  
 

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