PGA400-Q1 Automotive programmable-sensor signal conditioner with microcontroller |

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Automotive programmable-sensor signal conditioner with microcontroller


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The PGA400-Q1 is an interface device for piezoresistive, strain gauge, and capacitive-sense elements. The device incorporates the analog front end (AFE) that directly connects to the sense element and has voltage regulators and an oscillator. The device also includes a sigma-delta analog-to-digital converter (ADC), 8051 WARP core microprocessor, and OTP memory. Sensor compensation algorithms can be implemented in software. The PGA400-Q1 also includes two digital-to-analog converter (DAC) outputs.


  • Analog features
    • Analog front-end for resistive bridge sensors
    • Self-oscillating demodulator for capacitive sensors
    • On-chip temperature sensor
    • Programmable gain
    • 16-bit, 1-MHz sigma-delta analog-to-digital converter for signal channel
    • 10-bit sigma-delta analog-to-digital converter for temperature channel
    • Two 12-bit digital-to-analog outputs
  • Digital features
    • Microcontroller core
      • 10-MHz 8051 WARP core
        • 2 clocks per instruction cycle
      • On-chip oscillator
    • Memory
      • 8KB of OTP memory
      • 89 bytes of EEPROM
      • 256 bytes data SRAM
  • Peripheral features
    • Serial peripheral interface (SPI)
    • Inter-integrated circuit (I2C)
    • One-wire interface (OWI)
    • Two input capture ports
    • Two output compare ports
    • Software watchdog timer
    • Oscillator watchdog
    • Power management control
    • Analog low-voltage detect
  • General features
    • AEC-Q100 qualified with the following results:
      • Device temperature grade 1: –40°C to +125°C ambient operating temperature
      • Device HBM ESD classification level 2
      • Device HBM ESD classification level C3B
    • Power supply: 4.5-V to 5.5-V operational,
      –5.5-V to 16-V absolute maximum

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Part number Order Operating temperature range (C) Vs (Min) (V) Package Group Vs (Max) (V) Package size: mm2:W x L (PKG) Rating Resolution (Bits)
PGA400-Q1 Order now -40 to 125     -5.5     DSBGA | 36
VQFN | 36    
16     See datasheet (DSBGA)
36VQFN: 36 mm2: 6 x 6 (VQFN | 36)    
Automotive     16