236-Byte ISO14443A NFC Voltage Sensor AFE – SIC4343

SIC4343 is NFC type 2 tag with built-in Digital-to-analog (DACs) and Analog-to-digital (ADC) for voltage measurement. Chip bias voltage and measure voltage in response to changes in resistance across a sensor

Highlight Features

• Measurement mode
  • Single-ended
  • Differential
  • Open Circuit Potential (OCP)
• Channels: 3 I/O
• Biasing Voltage
  • 8-bit DACs
  • V-DC/ V ref: 0.2 V to 1.2 V
• Voltage Measurement Range
  • Input buffer is enabled
    • Single: 0.2 V to 1.2 V
    • Differential: -1 V to +1 V
  • Input buffer is disabled
    • Single: 0 V to 1.2 V
    • Differential: -1.2 V to +1.2 V
• Input impedance
  • Buffer is enabled: > 10 MΩ
  • Buffer is disabled: 18-42 kΩ
• Data Conversion: Sampling rate 10 sps

Connectivity

• RF interface based on ISO14443A – 106 kbps
• NFC Forum tag type 2 compatible

Memory

• 236 bytes addressable EEPROM 
• 48 bytes for calibration parameters 
• 144 bytes user memory EEPROM 
• EEPROM organization enabling NDEF format 
• EEPROM for initializing register (Automatically reload after power up) 
• Up to 100,000 times erase/write cycles 
• Up to 10 years memory retention at 70°C 

Operating Conditions

• Operating temperature from 0°C to 55°C
• On-chip regulator

Operating Condition

• Operating temperature 0 to 55°C
• Storage temperature -40 to 85°C

Package

• QFN 3×3 – 16 leads
• Au-bumped 12-inch die on wafer ring
• Pad size: 80 μm x 80 μm

Applications

• Industrial sensor (force, strain)
• pH, ions (Na, K, Ca, Mg, etc.)
• Chemical sensor
• Biochemical sensor