Product details

Resolution (Bits) 12 Sample rate (max) (ksps) 1000 Number of input channels 2 Interface type Microwire (Serial I/O), SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Supply Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 4.3 Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 SNR (dB) 72.4 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 12 Sample rate (max) (ksps) 1000 Number of input channels 2 Interface type Microwire (Serial I/O), SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Supply Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 4.3 Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 SNR (dB) 72.4 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Specified Over a Range of Sample Rates
  • Two Input Channels
  • Variable Power Management
  • Single power supply with 2.7V - 5.25V range

Key Specifications

  • DNL: +0.9 / −0.6 LSB (typ)
  • INL: ±0.64 LSB (typ)
  • SNR: 72.4 dB (typ)
  • Power Consumption
    • 3V Supply: 4.3 mW (typ)
    • 5V Supply: 13.1 mW (typ)

All trademarks are the property of their respective owners.

  • Specified Over a Range of Sample Rates
  • Two Input Channels
  • Variable Power Management
  • Single power supply with 2.7V - 5.25V range

Key Specifications

  • DNL: +0.9 / −0.6 LSB (typ)
  • INL: ±0.64 LSB (typ)
  • SNR: 72.4 dB (typ)
  • Power Consumption
    • 3V Supply: 4.3 mW (typ)
    • 5V Supply: 13.1 mW (typ)

All trademarks are the property of their respective owners.

The ADC122S101 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC122S101 is fully specified over a sample rate range of 500 ksps to 1 Msps. The converter is based on a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept one or two input signals at inputs IN1 and IN2.

The output serial data is straight binary, and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.

The ADC122S101 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 4.3 mW and 13.1 mW, respectively. The power-down feature reduces the power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply.

The ADC122S101 is available in an 8-lead VSSOP package. Operation over the industrial temperature range of −40°C to +85°C is ensured.

The ADC122S101 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC122S101 is fully specified over a sample rate range of 500 ksps to 1 Msps. The converter is based on a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept one or two input signals at inputs IN1 and IN2.

The output serial data is straight binary, and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.

The ADC122S101 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 4.3 mW and 13.1 mW, respectively. The power-down feature reduces the power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply.

The ADC122S101 is available in an 8-lead VSSOP package. Operation over the industrial temperature range of −40°C to +85°C is ensured.

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Type Title Date
* Data sheet ADC122S101 2 Channel, 500 ksps to 1 Msps 12-Bit A/D Converter datasheet (Rev. D) 19 Mar 2013
Circuit design Low-input bias-current front end SAR ADC circuit (Rev. A) 11 Mar 2019
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015
User guide WEBENCH® Sensor Designer Photodetector Sensor V 1 PCB (unpopulated) User Guide 27 Jan 2012
EVM User's guide Evaluation Board User's Guide 12, 10 and 8-Bit A-to-D Converters with Input Mux 25 Jan 2012

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