24-Bit, 64kSPS, 8-Ch (Simultaneous) Delta-Sigma ADC for Power Monitoring, Control and Protection - ADS131E08

ADS131E08 (ACTIVE)

24-Bit, 64kSPS, 8-Ch (Simultaneous) Delta-Sigma ADC for Power Monitoring, Control and Protection

 

Special note

See how the ADS131E08 and other TI products combine to create a unique Smart Metering solution

Description

The ADS131E0x are a family of multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator. The ADC wide dynamic range, scalable data rates, and internal fault detect monitors make the ADS131E0x attractive in industrial power monitoring and protection as well as test and measurement applications. True high-impedance inputs enable the ADS131E0x to directly interface with a resistor-divider network or a voltage transformer to measure line voltage, or a current transformer or Rogowski coil to measure line current. With high integration levels and exceptional performance, the ADS131E0x family enables the creation of scalable industrial power systems at significantly reduced size, power, and low overall cost.

The ADS131E0x have a flexible input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and fault detection. Fault detection can be implemented internal to the device, using the integrated comparators with digital-to-analog converter (DAC)-controlled trigger levels. The ADS131E0x can operate at data rates as high as 64 kSPS.

These complete analog front-end (AFE) solutions are packaged in a TQFP-64 package and are specified over the industrial temperature range of –40°C to +105°C.

Features

  • Eight Differential ADC Inputs
  • Outstanding Performance:
    • Dynamic Range: 118 dB at 1 kSPS
    • Crosstalk: –110 dB
    • THD: –90 dB at 50 Hz and 60 Hz
  • Analog Supply Range Options:
    • 3 V to 5 V (Unipolar)
    • ±2.5 V (Bipolar, Allows DC-Coupling)
  • Digital: 1.8 V to 3.6 V
  • Low Power: 2 mW per Channel
  • Data Rates: 1, 2, 4, 8, 16, 32, and 64 kSPS
  • Programmable Gains: 1, 2, 4, 8, and 12
  • Fault Detection and Device Testing Capability
  • SPI™ Data Interface and Four GPIOs
  • Package: TQFP-64 (PAG)
  • Operating Temperature Range: –40°C to +105°C

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

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
Input Type
Power Consumption (Typ) (mW)
Input Range (Min) (V)
Input Range (Max) (V)
Interface
Features
Analog Voltage AVDD (Min) (V)
Analog Voltage AVDD (Max) (V)
Architecture
Operating Temperature Range (C)
Pin/Package
THD (Typ) (dB)
SNR (dB)
Reference Mode
ADS131E08 ADS131A02 ADS131A04 ADS131E08S
24    24    24    24   
64000    128000    128000    64000   
8    2    4    8   
Differential
Pseudo-Differential   
Differential
Single-Ended   
Differential
Single-Ended   
Differential
Pseudo-Differential   
6    1.2    1.2    2   
0    -1.5    -1.5    0   
4    4.5    4.5    4   
SPI    SPI    SPI    SPI   
Daisy-Chainable
GPIO
Oscillator
PGA   
Daisy-Chainable    Daisy-Chainable    Daisy-Chainable
GPIO
Oscillator
PGA   
2.7    3    3    2.7   
5.25    5.5    5.5    5.25   
Delta-Sigma    Delta-Sigma    Delta-Sigma    Delta-Sigma   
-40 to 105    -40 to 125    -40 to 125    -40 to 105   
64TQFP    32TQFP    32TQFP    64TQFP   
-93    -100    -100    -107   
107    115.2    115.2    108   
Ext
Int   
Ext
Int   
Ext
Int   
Int   

WEBENCH® Designer ADS131E08