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AD7654:  Dual, 2-Channel, Simultaneous Sampling, PulSAR®, 500 kSPS, 16-Bit ADC

Product Details

The AD7654 is a low cost, simultaneous sampling, dual-channel, 16-bit, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. It contains two low noise, wide bandwidth, track-and-hold amplifiers that allow simultaneous sampling, a high speed 16-bit sampling ADC, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports. Each track-and-hold has a multiplexer in front to provide a 4-channel input ADC. The A0 multiplexer control input allows the choice of simultaneously sampling input pairs INA1/INB1 (A0 = low) or INA2/INB2 (A0 = high). The part features a very high sampling rate mode (normal) and, for low power applications, a reduced power mode (impulse) where the power is scaled with the throughput. Operation is specified from −40°C to +85°C.


  • AC motor control
  • 3-phase power control
  • 4-channel data acquisition
  • Uninterrupted power supplies
  • Communications


  • Dual, 16-Bit, 2-channel Simultaneous Sampling ADC
  • 16 Bits Resolution with No Missing Codes
  • Throughput:
    500 kSPS (Normal Mode)
    444 kSPS (Impulse Mode)
  • INL: ±3.5 LSB max (±0.0053% of full scale)
  • SNR: 89 dB typ @ 100 kHz
  • THD: −100 dB @ +100 kHz
  • Analog Input Voltage Range: 0 to 5 V
  • No Pipeline Delay
  • Parallel and Serial 5 V/3 V Interface
  • SPI®/QSPI™/MICROWIRE™/DSP Compatible
  • Single 5 V Supply Operation
  • See data sheet for additional features

Functional Block Diagram for AD7654

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Title Content Type File Type
AD7654: 16-Bit, 500 kSPS PulSAR Dual, 2-Channel Simultaneous Sampling ADC Data Sheet  (Rev C, 10/2014) (pdf, 541 kB) Data Sheets PDF
AN-931: Understanding PulSAR ADC Support Circuitry  (pdf, 299 kB)
This application note discusses in general the pitfalls that occur regularly when using SAR ADCs and, more importantly, how to easily prevent them.
Application Notes PDF
AN-932: Power Supply Sequencing  (pdf, 95 kB) Application Notes PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
AD7654: Multi-Channel Simultaneously-Sampling 16-Bit 500-ksample/s ADC  (htm)
... Motor control and 3-phase power monitoring applications benefit from unmatched accuracy and speed of new PulSAR converter. (analogZone, acquisitionZONE Products for the week of November 11, 2002)
Product Reviews HTM
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog  (pdf, 1885 kB)
8- to 18-Bit SAR ADCs with Sample Rates up to 3 MSPS -- The latest additions to ADI’s ADC portfolio offer unrivaled functionality in terms of channel count and power supply voltage, optimal power/speed ratios, and the smallest packages to meet the demands of any data acquisition application, including portable, industrial, medical, wireless, and communications.
Overview PDF
High Speed, High Accuracy 14-Bit, 16-Bit, and 18-Bit PulSAR ADCs  (pdf, 3826 kB)
A PulSAR Family Brochure (6/2006)
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products

Recommended Driver Amplifiers for the AD7654

  • For 16-bit ADC drivers requiring high speed and low noise, we recommend the AD8021, ADA4899-1 or the dual AD8022.
  • For 16 bit applications requiring ultra low noise, low distortion try the AD8597 or the dual AD8599.
  • For 16 bit applications driving large capacitive loads, we suggest the AD8610 or ADA4627-1.
Recommended High Accuracy, Precision References - 2.5V for the AD7654

  • For applications requiring the lowest noise performance and output trim adjust, we recommend the ADR441.
  • For high accuracy, low noise, low temperature drift, we recommend the ADR421 or the ADR431.
  • For wide supply applications, we recommend the AD780.
  • For cost sensitive applications, we suggest the AD1582 or the ADR391.
Recommended Voltage Regulators for the AD7654
  • For low dropout regulators with inputs up to 5V, we recommend the low noise ADP151 or the low power ADP160.
  • For high current switching regulators with inputs up to 5V, we recommend the low noise ADP2114.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD7654 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD7654ACPZ Status: Production 48 ld LFCSP 7x7mm (5.25EP) 48 Ind Tray, 260 $17.26 $15.61 Y  Material Info PCN Purchase Sample
AD7654ACPZRL Status: Last Time Buy 48 ld LFCSP 7x7mm (5.25EP) 48 Ind Reel, 2500 - $15.61 Y  Material Info PCN/PDN Purchase
AD7654ASTZ Status: Production 48 ld LQFP 48 Ind Tray, 250 $17.26 $15.61 Y  Material Info PCN Purchase Sample
AD7654ASTZRL Status: Production 48 ld LQFP 48 Ind Reel, 2000 - $15.61 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

AD7654 Evaluation Kit
Model Description Price RoHS View PCN/ PDN Check Inventory/
EVAL-CED1Z Status: Production Evaluation Controller Board $249.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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