ADC122S101 2 Channel, 500 ksps to 1 Msps 12-Bit A/D Converter | TI.com

ADC122S101 (ACTIVE)

2 Channel, 500 ksps to 1 Msps 12-Bit A/D Converter

 

Description

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.

Features

  • 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)

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Parametrics

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Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADC122S101 Order now 12     1000     2     Microwire (Serial I/O)
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-40 to 85     VSSOP | 8     1.94 | 1ku     4.3     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     SAR     Single-Ended     Multiplexed     Supply    
   
5.25     0     2.7     5.25     2.7     5.25     1.6     72.4     -82     Catalog    
ADC082S101 Order now 8     1000     2     Microwire (Serial I/O)
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-40 to 85     VSSOP | 8     1.26 | 1ku     3.2     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     SAR     Single-Ended     Multiplexed     Supply    
   
5.25     0     2.7     5.25     2.7     5.25     0.4     49.6     -75     Catalog    
ADC102S101 Order now 10     1000     2     Microwire (Serial I/O)
QSPI
SPI    
-40 to 85     VSSOP | 8     2.04 | 1ku     3.9     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     SAR     Single-Ended     Multiplexed     Supply    
   
5.25     0     2.7     5.25     2.7     5.25     0.7     61.7     -82     Catalog    
ADC122S021 Order now 12     200     2     Microwire (Serial I/O)
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