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)

View more

Parametrics Compare all products in Precision ADCs (<=10MSPS)

 
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)
SINAD (dB)
SNR (dB)
THD (Typ) (dB)
Rating
ADC121S021 ADC081S021 ADC101S021 ADC121S051 ADC121S101
12     8     10     12     12    
200     200     200     500     1000    
1     1     1     1     1    
Microwire (Serial I/O)
QSPI
SPI    
Microwire (Serial I/O)
QSPI
SPI    
Microwire (Serial I/O)
QSPI
SPI    
Microwire (Serial I/O)
QSPI
SPI    
Microwire (Serial I/O)
QSPI
SPI    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 125    
SOT-23 | 6
WSON | 6    
SOT-23 | 6
WSON | 6    
SOT-23 | 6
WSON | 6    
SOT-23 | 6
WSON | 6    
SOT-23 | 6
WSON | 6    
1.16 | 1ku     0.61 | 1ku     0.95 | 1ku     1.38 | 1ku     1.92 | 1ku    
1.5     1.3     2.34     1.7     2    
6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
SAR     SAR     SAR     SAR     SAR    
Single-Ended     Single-Ended     Single-Ended     Single-Ended     Single-Ended    
   
Multiplexed     Multiplexed    
   
   
Supply     Supply     Supply     Supply     Supply    
Small Size     Small Size     Small Size     Small Size     Small Size    
5.25     5.25     5.25     5.25     5.25    
0     0     0     0     0    
2.7     2.7     2.7     2.7     2.7    
5.25     5.25     5.25     5.25     5.25    
2.7     2.7     2.7     2.7     2.7    
5.25     5.25     5.25     5.25     5.25    
1     0.3     0.7     1     1    
72     49.5     61.5     72