ADS131E08S 24-bit 64-kSPS 8-ch simultaneous delta-sigma ADC with fast start-up for monitoring and protection | TI.com

ADS131E08S (ACTIVE)

24-bit 64-kSPS 8-ch simultaneous delta-sigma ADC with fast start-up for monitoring and protection

 

Description

The ADS131E08S is a multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) with built-in programmable gain amplifiers (PGAs), an internal reference, and an internal oscillator. The ADC wide dynamic range, scalable data rates, and internal fault detect monitors make the ADS131E08S very attractive in industrial power monitoring, control, and protection applications. Fast power-up time allows data to be available within 3 ms of power being applied to the device for line-powered power applications. True high-impedance inputs enable the ADS131E08S 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 ADS131E08S enables the creation of scalable industrial power systems at a significantly reduced size, power, and overall cost.

The ADS131E08S has an individual 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 ADS131E08S can operate at data rates as high as 64 kSPS.

The complete analog front-end (AFE) solution is available in a 64-pin TQFP package and is specified over the industrial temperature range of –40°C to +105°C.

Features

  • Power-Up Time: 3 ms
  • Eight Differential Simultaneous Sampling Inputs
  • High Performance:
    • Dynamic Range at 1 kSPS: 118 dB
    • Crosstalk: –125 dB
    • THD: –100 dB at 50 Hz and 60 Hz
  • Low Power Consumption: 2 mW/Channel
  • Data Rates: 1, 2, 4, 8, 16, 32, and 64 kSPS
  • Gain Options: 1, 2, 4, 8, and 12
  • Internal Voltage Reference: 8 ppm/°C Drift
  • Supply Range:
    • Analog:
      • 2.7 V to 5.25 V (Unipolar)
      • ±2.5 V (Bipolar)
    • Digital: 1.7 V to 3.6 V
  • Fault Detection and Device Self-Testing Capability
  • SPI™ Compatible Data Interface and Four GPIOs
  • Package: 64-Pin TQFP
  • Operating Temperature Range: –40°C to +105°C

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) SNR (dB) THD (Typ) (dB) Rating
ADS131E08S Order now 24     64     8     SPI     -40 to 105     TQFP | 64     7.15 | 1ku     2     64TQFP: 144 mm2: 12 x 12 (TQFP | 64)     Delta-Sigma     Differential
Pseudo-Differential    
Simultaneous Sampling     Int     Daisy-Chainable
GPIO
Oscillator
PGA    
4     0     2.7     5.25     1.7     3.6     108     -107     Catalog    
ADS131A02 Order now 24     128     2     SPI     -40 to 125     TQFP | 32     3.15 | 1ku     1.2     32TQFP: 49 mm2: 7 x 7 (TQFP | 32)     Delta-Sigma     Differential
Single-Ended    
Simultaneous Sampling     Ext
Int    
Daisy-Chainable     4.5     -1.5     3     5.5     1.65     3.6     115.2     -100     Catalog    
ADS131A04 Order now 24     128     4     SPI     -40 to 125     TQFP | 32     4.15 | 1ku     1.2     32TQFP: 49 mm2: 7 x 7 (TQFP | 32)     Delta-Sigma     Differential
Single-Ended    
Simultaneous Sampling     Ext
Int    
Daisy-Chainable     4.5     -1.5     3     5.5     1.65     3.6     115.2     -100     Catalog    
ADS131E08 Order now 24     64     8     SPI     -40 to 105     TQFP | 64     7.15 | 1ku     6     64TQFP: 144 mm2: 12 x 12 (TQFP | 64)     Delta-Sigma     Differential
Pseudo-Differential    
Simultaneous Sampling     Ext
Int    
Daisy-Chainable
GPIO
Oscillator
PGA