ADC121S021 Single Channel, 50 to 200 ksps, 12-Bit A/D Converter | TI.com

ADC121S021 (ACTIVE)

Single Channel, 50 to 200 ksps, 12-Bit A/D Converter

 

Description

The ADC121S021 device is a low-power, single-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 ADC121S021 is fully specified over a sample rate range of 50 ksps to 200 ksps. The converter is based upon a successive-approximation register architecture with an internal track-and-hold circuit.

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 ADC121S021 operates with a single supply that can range from 2.7 V to 5.25 V. Normal power consumption using a 3.6-V or 5.25-V supply is 1.5 mW and 7.9 mW, respectively. The power-down feature reduces the power consumption to as low as 2.6 µW using a 5.25-V supply.

The ADC121S021 is packaged in 6-pin WSON and SOT-23 packages. Operation over the industrial temperature range of –40°C to 85°C is ensured.

Features

  • Specified Over a Range of Sample Rates
  • Variable Power Management
  • Single Power Supply With 2.7-V to 5.25-V Range
  • Compatible With the SPI, QSPI, MICROWIRE, and DSP
  • Key Specifications:
    • DNL: 0.45 and –0.25 LSB (Typical)
    • INL: 0.45 and –0.4 LSB (Typical)
    • SNR: 72.3 dB (Typical)
    • Power Consumption
      • 3.6-V Supply: 1.5 mW (Typical)
      • 5.25-V Supply: 7.9 mW (Typical)

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
ADC121S021 Order now 12     200     1     Microwire (Serial I/O)
QSPI
SPI    
-40 to 85     SOT-23 | 6
WSON | 6    
1.16 | 1ku     1.5     6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
SAR     Single-Ended    
   
Supply     Small Size     5.25     0     2.7     5.25     2.7     5.25     1     72.3     -83     Catalog    
ADC081S021 Order now 8     200     1     Microwire (Serial I/O)
QSPI
SPI    
-40 to 85     SOT-23 | 6
WSON | 6    
0.61 | 1ku     1.3     6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
SAR     Single-Ended     Multiplexed     Supply     Small Size     5.25     0     2.7     5.25     2.7     5.25     0.3     49.6     -77     Catalog    
ADC101S021 Order now 10     200     1     Microwire (Serial I/O)
QSPI
SPI    
-40 to 85     SOT-23 | 6
WSON | 6    
0.95 | 1ku     2.34     6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
SAR     Single-Ended     Multiplexed     Supply     Small Size     5.25     0     2.7     5.25     2.7     5.25     0.7     61.6     -79     Catalog    
ADC121S051 Order now 12     500     1     Microwire (Serial I/O)
QSPI
SPI