ADS1605 16-bit, 5 MSPS Delta-Sigma, Analog-to-Digital Converter |

ADS1605 (ACTIVE) 16-bit, 5 MSPS Delta-Sigma, Analog-to-Digital Converter

16-bit, 5 MSPS Delta-Sigma, Analog-to-Digital Converter - ADS1605


The ADS1605 and ADS1606 are high-speed, high-precision, delta-sigma analog-to-digital converter (ADCs) with 16-bit resolution. The data rate is 5 mega-samples per second (MSPS), the bandwidth (–3dB) is 2.45MHz, and passband ripple is less than ±0.0025dB (to 2.2MHz). Both devices offer outstanding performance at these speeds with a signal-to-noise ratio up to 88dB, total harmonic distortion down to –99dB, and a spurious-free dynamic range up to 101dB. For even higher-speed operation, the data rate an be doubled to 10MSPS in 2X mode. The ADS1606 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 ADS1605/6 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 ADS1605/6 are offered in a TQFP-64 package using TI PowerPAD™ technology.

The ADS1605 and ADS1606, along with their 18-bit counterparts, the ADS1625 and ADS1626, are well suited for the demanding measurement requirements of scientific instrumentation, automated test equipment, data acquisition, and medical imaging.


  • Data Rate: 5MSPS (10MSPS in 2X Mode)
  • Signal-to-Noise Ratio: 88dB
  • Total Harmonic Distortion: –99dB
  • Spurious-Free Dynamic Range: 101dB
  • Linear Phase with 2.45MHz Bandwidth
  • Passband Ripple: ±0.0025dB
  • Selectable On-Chip Reference
  • Directly Connects to TMS320C6000 DSPs
  • Easily Upgradeable to 18 Bits with the ADS1625 and ADS1626
  • Adjustable Power Dissipation: 315 to 570mW
  • Power Down Mode
  • Supplies:
    • Analog +5V
    • Digital +3V
    • Digital I/O +2.7 to +5.25V
    • 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.

WEBENCH® Designer ADS1605


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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) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADS1605 Order now 16     5000     1     Parallel     -40 to 85     HTQFP | 64     23.12 | 1ku     560     64HTQFP: 144 mm2: 12 x 12 (HTQFP | 64)     Delta-Sigma     Differential         Ext
    4.7     0     4.75     5.25     2.7     5.25     0.75     84     -101     Catalog