Description

The ZSSC3135 is a member of the ZSSC313x product family of CMOS integrated circuits designed for automotive/industrial sensor applications. All family members are well suited for highly-accurate amplification and sensor specific correction of resistive bridge sensor signals. An internal 16 bit RISC microcontroller running a correction algorithm compensates sensor offset, sensitivity, temperature drift, and non-linearity of the connected sensor element. The required calibration coefficients are stored by the One-Pass calibration procedure in an on-chip EEPROM.

The ZSSC3135 is specially designed for piezoresistive bridge sensor elements. The amplification stage with an analog gain of 105 in conbination with optional temperature compensation using an external temperature sensor fits the requirements of piezoresistive sensor applications perfectly.

Support includes evaluation kits, application notes and mass calibration system.

Features

• Adjustable to nearly all resistive bridge sensor types: maximum analog gain of 105; maximum overall gain of 420
• Sample rate up to 200 Hz
• ADC resolution 13/14 bit
• Safety functionality sensor connection
• External temperature sensor
• Output options: Ratiometric analog voltage output (5-95% maximum, 12.4 bit resolution) or ZACwire tm (digital One-Wire Interface - "OWI")
• Sensor biasing by voltage
• High voltage protection up to 33V
• Supply current Max 5.5 mA
• Reverse polarity and short-circuit protection
• Wide operating temperature range: -40 to +150°C
• Traceability by user-defined EEPROM entries
• Supply voltage 4.5 to 5.5 V
• RoHS-compliance JEDEC-SSOP14 package or delivery as die

Benefits

• Family approach offers the best fitting IC-selection to build cost-optimized applications
• No external trimming components required
• Low number of external components needed
• High accuracy (0.25% FSO @ -25 to +85°C; 0.5% FSO @-40 to +125°C)
• Optimized for automotive/industrial environments due to robust protection circuitries, excellent electromagnetic compatibility, and AEC-Q100 qualification.

Typical Uses

Optimized for piezoresistive bridge sensors