ADS131E08S 24-Bit, 64kSPS, 8-Ch (Simultaneous) Delta-Sigma ADC w/ Fast Start-Up for Monitoring and Protection | TI.com

ADS131E08S (ACTIVE)

24-Bit, 64kSPS, 8-Ch (Simultaneous) Delta-Sigma ADC w/ 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

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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)
SINAD (dB)
SNR (dB)
THD (Typ) (dB)
Rating
ADS131E08S ADS131A02 ADS131A04 ADS131E08
24     24     24     24    
64     128     128     64    
8     2     4     8    
SPI     SPI     SPI     SPI    
-40 to 105     -40 to 125     -40 to 125     -40 to 105    
TQFP | 64     TQFP | 32     TQFP | 32     TQFP | 64    
7.15 | 1ku     3.15 | 1ku     4.15 | 1ku     7.15 | 1ku    
2     1.2     1.2     6    
64TQFP: 144 mm2: 12 x 12 (TQFP | 64)     32TQFP: 49 mm2: 7 x 7 (TQFP | 32)     32TQFP: 49 mm2: 7 x 7 (TQFP | 32)     64TQFP: 144 mm2: 12 x 12 (TQFP | 64)    
Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma    
Differential
Pseudo-Differential    
Differential
Single-Ended    
Differential
Single-Ended    
Differential
Pseudo-Differential    
Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling    
Int     Ext
Int    
Ext
Int    
Ext
Int    
Daisy-Chainable
GPIO
Oscillator
PGA    
Daisy-Chainable     Daisy-Chainable     Daisy-Chainable
GPIO
Oscillator
PGA    
4     4.5     4.5     4    
0     -1.5     -1.5     0    
2.7     3     3     2.7    
5.25     5.5     5.5     5.25    
1.7     1.65     1.65     1.8    
3.6     3.6     3.6     3.6    
  101     -101      
108     115.2     115.2     107    
-107     -100     -100     -93    
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