Data Sheet Rev. 1.51 / March 2011 ZSC31014 TM RBic Low-Cost Sensor Signal Conditioner with I2C and SPI Output iLite ZSC31014 TM RBic Low-Cost Sensor Signal Conditioner with I2C & SPI iLite Brief Description Benefits The ZSC31014 RBic is a CMOS integrated cir- Simple PC-controlled configuration and single- iLite 2 cuit for highly accurate amplification and analog-to- pass digital calibration via I C interface quick, digital conversion of differential and half-bridge input precise, and low cost SPI option for measure- signals. The RBic can compensate the mea- ment mode iLite st nd st sured signal for offset, 1 and 2 order span, and 1 Eliminates need for external trimming nd and 2 order temperature (Tco and Tcg). It is well- components suited for sensor-specific correction of bridge sen- On-chip diagnostic features add safety to the sors. Digital compensation of signal offset, application (e.g., EEPROM signature, bridge sensitivity, temperature drift, and non-linearity is connection checks, bridge short detection). accomplished via an internal digital signal processor Low-power Sleep Mode lengthens battery life running a correction algorithm with calibration Enables multiple sensor networks coefficients stored in a non-volatile EEPROM. The RBic is adjustable to nearly all piezo-resis- iLite tive bridge sensors. Measured and corrected bridge Available Support values are provided at digital output pins, which can Evaluation Kit 2 2 be configured as I C* or SPI. The digital I C inter- Application Notes face can be used for a simple PC-controlled calibra- Mass Calibration Solution tion procedure to program calibration coefficients into an on-chip EEPROM. The calibrated RBic iLite and a specific sensor are mated digitally: fast, Physical Characteristics precise, and without the cost overhead associated Wide supply voltage capability: 2.7V to 5.5V with trimming by external devices or laser trimming. Current consumption as low as 70 A depending Integrated diagnostics functions make the RBic iLite on programmed sample rate particularly well-suited for safety-critical applications. Low-power Sleep Mode (<2 A 25C) Operation temperature: -40C to +125C Features Small SOP8 package High accuracy (0.1% FSO -25 to +85C 2 0.25% FSO -40 to +125C) ZSC31014 Application: I C Interface, Low-Power nd Bsink Option, Internal Temperature Correction 2 order charge-balancing analog-to-digital converter provides low noise, 14-bit data at sample rates exceeding 2kHz V supply Fast power-up to data output response: 3ms (2.7V to 5.5V) ZSC31014 at 4MHz Digital compensation of sensor offset, sensitivity, VSS VDD temperature drift, and non-linearity BSINK INT/SS Eight programmable analog gain settings com- VBP SDA/MISO bine with a digital gain term accommodates VBN SCL/SCLK bridges with spans <1mV/V and high offset 0.1F Internal or optional external temperature com- pensation for sensor correction and for corrected GND temperature output 48-bit customer ID field for module traceability 2 * I C is a trademark of NXP. 2011 ZMD AG Rev. 1.5 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.