Product details

Resolution (Bps) 18 Number of input channels 1 Interface type Parallel Architecture Delta-Sigma Input type Differential Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 4.8 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 520 Analog supply (min) (V) 4.75 Analog supply (max) (V) 5.25 SNR (dB) 93 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bps) 18 Number of input channels 1 Interface type Parallel Architecture Delta-Sigma Input type Differential Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 4.8 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 520 Analog supply (min) (V) 4.75 Analog supply (max) (V) 5.25 SNR (dB) 93 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
HTQFP (PAP) 64 144 mm² 12 x 12
  • Data Rate: 1.25MSPS
  • Signal-to-Noise Ratio: 93dB
  • Total Harmonic Distortion: –101dB
  • Spurious-Free Dynamic Range: 103dB
  • Linear Phase with 615kHz Bandwidth
  • Passband Ripple: ±0.0025dB
  • Adjustable FIFO Output Buffer (ADS1626 only)
  • Selectable On-Chip Reference
  • Directly Connects to TMS320C6000 DSPs
  • Adjustable Power Dissipation: 150 to 515mW
  • Power Down Mode
  • Supplies:
       Analog         +5V
       Digital          +3V
       Digital I/O    +2.7 to +5.25V
  • APPLICATIONS
    • Scientific Instruments
    • Automated Test Equipment
    • Data Acquisition
    • Medical Imaging
    • Vibration Analysis

PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.

  • Data Rate: 1.25MSPS
  • Signal-to-Noise Ratio: 93dB
  • Total Harmonic Distortion: –101dB
  • Spurious-Free Dynamic Range: 103dB
  • Linear Phase with 615kHz Bandwidth
  • Passband Ripple: ±0.0025dB
  • Adjustable FIFO Output Buffer (ADS1626 only)
  • Selectable On-Chip Reference
  • Directly Connects to TMS320C6000 DSPs
  • Adjustable Power Dissipation: 150 to 515mW
  • Power Down Mode
  • Supplies:
       Analog         +5V
       Digital          +3V
       Digital I/O    +2.7 to +5.25V
  • APPLICATIONS
    • Scientific Instruments
    • Automated Test Equipment
    • Data Acquisition
    • Medical Imaging
    • Vibration Analysis

PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.

The ADS1625 and ADS1626 are high-speed, high-precision, delta-sigma analog-to-digital converters (ADCs) with 18-bit resolution. The data rate is 1.25 mega samples per second (MSPS), the bandwidth (-3dB) is 615kHz, and passband ripple is less than ±0.0025dB (to 550kHz). Both devices offer the same outstanding performance at these speeds with a signal-to-noise ratio up to 93dB, total harmonic distortion down to -101dB, and a spurious-free dynamic range up to 103dB. The ADS1626 includes an adjustable first-in, first-out buffer (FIFO) for the output data.

The input signal is measured against a voltage reference that can be generated on-chip or supplied externally. The digital output data is provided over a simple parallel interface that easily connects to digital signal processors (DSPs). An out-of-range monitor reports when the input range has been exceeded. The ADS1625/6 operate from a +5V analog supply (AVDD) and +3V digital supply (DVDD). The digital I/O supply (IOVDD) operates from +2.7 to +5.25V, enabling the digital interface to support a range of logic families. The analog power dissipation is set by an external resistor and can be reduced when operating at slower speeds. A power-down mode, activated by a digital I/O pin, shuts down all circuitry. The ADS1625/6 are offered in a TQFP-64 package using TI PowerPAD™ technology.

The ADS1625 and ADS1626, along with their 16-bit, 5MSPS counterparts, the ADS1605 and ADS1606, are well-suited for the demanding measurement requirements of scientific instrumentation, automated test equipment, data acquisition, and medical imaging.

The ADS1625 and ADS1626 are high-speed, high-precision, delta-sigma analog-to-digital converters (ADCs) with 18-bit resolution. The data rate is 1.25 mega samples per second (MSPS), the bandwidth (-3dB) is 615kHz, and passband ripple is less than ±0.0025dB (to 550kHz). Both devices offer the same outstanding performance at these speeds with a signal-to-noise ratio up to 93dB, total harmonic distortion down to -101dB, and a spurious-free dynamic range up to 103dB. The ADS1626 includes an adjustable first-in, first-out buffer (FIFO) for the output data.

The input signal is measured against a voltage reference that can be generated on-chip or supplied externally. The digital output data is provided over a simple parallel interface that easily connects to digital signal processors (DSPs). An out-of-range monitor reports when the input range has been exceeded. The ADS1625/6 operate from a +5V analog supply (AVDD) and +3V digital supply (DVDD). The digital I/O supply (IOVDD) operates from +2.7 to +5.25V, enabling the digital interface to support a range of logic families. The analog power dissipation is set by an external resistor and can be reduced when operating at slower speeds. A power-down mode, activated by a digital I/O pin, shuts down all circuitry. The ADS1625/6 are offered in a TQFP-64 package using TI PowerPAD™ technology.

The ADS1625 and ADS1626, along with their 16-bit, 5MSPS counterparts, the ADS1605 and ADS1606, are well-suited for the demanding measurement requirements of scientific instrumentation, automated test equipment, data acquisition, and medical imaging.

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Technical documentation

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* Data sheet 18-Bit, 1.25MSPS Analog-to-Digital Converter datasheet (Rev. E) 21 May 2007
Application note ADS16xx Reference Options (Rev. A) PDF | HTML 09 Mar 2022
Technical article Clock tree fundamentals: finding the right clocking devices for your design 24 Mar 2021
E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
Application note Digital Filter Types in Delta-Sigma ADCs PDF | HTML 27 Jun 2017
White paper Voltage-reference impact on total harmonic distortion 01 Aug 2016
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 Mar 2015
Technical article Leverage coherent sampling and FFT windows when evaluating SAR ADCs (Part 1) 13 Mar 2015

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