The Z350 is a highly integrated, low-powered conditioning sensor chip designed for bridge resistance sensors; The chip performs high-precision amplification and 14-bit analog-to-digital conversion of the sensor input signal, and then calculates the coefficient stored by the on-chip EEPROM through DSP to achieve accurate and fast calibration of the sensor, and the final calibration result can be output analog signal by the on-chip DAC, or calibrated digital signal through I2C output. For the bridge resistive sensor signal, the Z250 digitally calibrates the zero-bias, gain and nonlinearity of the bridge; The Z250 has an integrated temperature sensor, which can realize digital calibration of the sensor's temperature linearity or nonlinearity.

Z350 has a built-in overvoltage and reverse voltage protection circuit, the protection range is +24V~-20V.

The Z350 chips are specially designed for calibration production, making them suitable for large-scale batch calibration.

Features

• No external compensation components required;
• Automatic large-scale chip configuration and calibration via I2C or one-bit serial digital interface at a simple and low cost;
• High accuracy (-25°C~85°C error at ±0.1% FSO; The error at -40°C~125°C is ±0.25% FSO);
• Suitable for battery-powered applications;
• 12-bit DAC output

Technical Support

• Development kits available;
• Support large-scale calibration operations;
• Provide customized calibration procedures according to customer needs.

Physical Characteristics

• Operating temperature range: -40°C~+125°C;
• Withstand voltage range: 10V;
• ESD protection: HBM > 6000V;

Basic Performance Index

• Digital compensation of sensor bias, sensitivity, temperature drift and nonlinearity;
• Built-in EEPROM: reprogramming to improve system yield;
• Set the analog/digital gain through EEPROM, suitable for differential sensors with input signal range of 1.2~60mV/V;
• Set the zero bias of the sensor through EEPROM, suitable for sensors with large zero bias;
• EEPROM data protection; EEPROM automatic error correction;
• Massive calibration design: one calibration board can simultaneously verify up to 7680 sets of sensing modules;
• User ID settings: up to 24 bits reserved;
• 24V~-20V overvoltage/reverse voltage protection;
• Power supply voltage: +4.5V~+5.5V;
• Typical operating current value of 2.3mA(including the sensor):
• Typical response time is 0.25mS, The fastest can reach 0.16mS;
• Wide operating temperature range: -40°C~+125°C;
• Built-in sensor power connection, wire break, short circuit, and EEPROM integrity diagnostics;
• Analog output clamp setting;
• On-chip integrated oscillator and temperature measurement unit, no external components required;
• Optional external temperature compensation;
• Output mode optional: analog proportional voltage output, digital I2C output, one-bit serial digital output.