ADS131A04 Series
24-bit 128-kSPS 4-channel simultaneous-sampling delta-sigma ADC
Manufacturer: Texas Instruments
Catalog
24-bit 128-kSPS 4-channel simultaneous-sampling delta-sigma ADC
Key Features
• 2 or 4 simultaneous-sampling differential inputsData rates up to 128 kSPSHigh performance:Single-channel accuracy: better than 0.1% at 10,000:1 dynamic rangeEffective resolution: 20.6 bits at 8 kSPSTHD: –100 dB at 50 Hz and 60 HzIntegrated negative charge pump allows absolute input voltages below groundFlexible analog power-supply operation:Using negative charge pump: 3.0 V to 3.45 VUnipolar supply: 3.3 V to 5.5 VBipolar supply: ±2.5 VDigital supply: 1.65 V to 3.6 VLow-drift internal voltage reference: 6 ppm/°CADC self checksCyclic redundancy check (CRC) and hamming code error correction on communicationsMultiple SPI data interface modes:Asynchronous interruptSynchronous master and slavePackage: 32-pin TQFPOperating temperature range:–40°C to +125°C2 or 4 simultaneous-sampling differential inputsData rates up to 128 kSPSHigh performance:Single-channel accuracy: better than 0.1% at 10,000:1 dynamic rangeEffective resolution: 20.6 bits at 8 kSPSTHD: –100 dB at 50 Hz and 60 HzIntegrated negative charge pump allows absolute input voltages below groundFlexible analog power-supply operation:Using negative charge pump: 3.0 V to 3.45 VUnipolar supply: 3.3 V to 5.5 VBipolar supply: ±2.5 VDigital supply: 1.65 V to 3.6 VLow-drift internal voltage reference: 6 ppm/°CADC self checksCyclic redundancy check (CRC) and hamming code error correction on communicationsMultiple SPI data interface modes:Asynchronous interruptSynchronous master and slavePackage: 32-pin TQFPOperating temperature range:–40°C to +125°C
Description
AI
The ADS131A02 and ADS131A04 devices are two- and four-channel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs). The wide dynamic range, with scalable data rates up to 128 kSPS, and internal fault monitors make the ADS131A02 or ADS131A04 a good choice when designing for energy monitoring, grid protection, and control applications. The ADC inputs can be independently and directly interfaced to a resistor-divider network, a current transformer, or a Rogowski coil to measure voltage or current. Flexible power-supply options, including an internal negative charge pump, are available to maximize the effective resolution for high dynamic range applications.
Asynchronous and synchronous master and slave interface options are available, providing ADC configuration flexibility when chaining multiple devices in a single system. Several interface checks, ADC startup checks, and data integrity checks can be enabled on the interface to report errors in the ADC and during data transfer.
The complete analog front-end (AFE) solutions are packaged in a 32-pin TQFP package and are specified over the industrial temperature range of –40°C to +125°C.
The ADS131A02 and ADS131A04 devices are two- and four-channel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs). The wide dynamic range, with scalable data rates up to 128 kSPS, and internal fault monitors make the ADS131A02 or ADS131A04 a good choice when designing for energy monitoring, grid protection, and control applications. The ADC inputs can be independently and directly interfaced to a resistor-divider network, a current transformer, or a Rogowski coil to measure voltage or current. Flexible power-supply options, including an internal negative charge pump, are available to maximize the effective resolution for high dynamic range applications.
Asynchronous and synchronous master and slave interface options are available, providing ADC configuration flexibility when chaining multiple devices in a single system. Several interface checks, ADC startup checks, and data integrity checks can be enabled on the interface to report errors in the ADC and during data transfer.
The complete analog front-end (AFE) solutions are packaged in a 32-pin TQFP package and are specified over the industrial temperature range of –40°C to +125°C.
