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AD7693:  16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential A/D Converter in MSOP/QFN

Product Details

The AD7693 is a 16-bit, successive approximation analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The reference voltage, VREF, is applied externally and can be set up to the supply voltage, VDD. On the CNV rising edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and VREF about VREF/2.

Its power scales linearly with throughput.

Using the SDI input, the SPI-compatible serial interface also features the ability to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply.

The AD7693 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.


  • Battery-powered equipment
  • Data acquisitions
  • Seismic data acquisition systems
  • DVMs Instrumentation
  • Medical instruments


  • 16-bit resolution with no missing codes
  • Throughput: 500 kSPS
  • INL/DNL: ±0.25 LSB typ, ±0.5 LSB max (±8 ppm of FSR)
  • Dynamic range: 96.5 dB
  • SINAD: 96 dB @ 1 kHz
  • THD: −120 dB @ 1 kHz
  • True differential analog input range: ±VREF 0 V to VREF with VREF up to VDD on both inputs
  • No pipeline delay
  • Single-supply 5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
  • Serial interface SPI®/QSPI™/MICROWIRE™/DSP compatible
  • Daisy-chain multiple ADCs, selectable busy indicator
  • Power dissipation: 40 nJ/conversion
    40 μW @ 5 V/1 kSPS
    4 mW @ 5 V/100 kSPS
    18 mW @ 5 V/500 kSPS

Functional Block Diagram for AD7693

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Design Tools,Models,Drivers & Software

Title Content Type File Type
AD7685 IBIS Models IBIS Models HTML
BeMicro FPGA Project for AD7693 with Nios driver FPGA HDL HTML
AD7693 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design FPGA HDL 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 AD7693
  • For low frequency and low bias current, we recommend the ADA4627-1.
  • For very low noise, low power, single to differential, we recommend the ADA4940-1 or the ADA4941-1.
  • For low noise and low power, R-R output applications, we recommend the ADA4841-1 or the dual ADA4841-2.
  • For precision, high dynamic range and high speed, we recommend the ADA4896 or the ADA4897-1.
  • For a fully differential attenuating precision amplifier, we recommend the AD8475.
Recommended External Voltage Reference for the AD7693
  • For low dropout 2.5V reference, we recommend the ADR391 or the ADR4525.

  • For a reference buffer, we suggest the AD8031 or the AD8605.
Recommended Digital Isolators for the AD7693
  • For a 4-channel, 150Mbps data rate, we recommend the ADuM3441.
  • For a 4- channel, 90Mbps data rate, we recommend the ADuM1401.
  • For a 3-channel, 90 Mbps data rate, we recommend the ADuM1301.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD7693 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD7693BCPZRL Status: Last Time Buy 10 ld LFCSP (3x3mm) 10 Ind Reel, 5000 - $18.22 Y  Material Info PDN Purchase
AD7693BCPZRL7 Status: Production 10 ld LFCSP (3x3mm) 10 Ind Reel, 1500 - $18.22 Y  Material Info Notify Me Purchase Sample
AD7693BRMZ Status: Production 10 ld MSOP 10 Ind Tube, 50 $20.15 $18.22 Y  Material Info PCN Purchase Sample
AD7693BRMZRL7 Status: Production 10 ld MSOP 10 Ind Reel, 1000 - $18.22 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.

AD7693 Evaluation Kit
Model Description Price RoHS View PCN/ PDN Check Inventory/
EVAL-AD7693-PMDZ Status: Production Evaluation Board PMOD compatible form factor $27.00 Yes -
EVAL-AD7693SDZ Status: Production Evaluation Board SDP Interface $99.00 Yes -
EVAL-SDP-CB1Z Status: Production Evaluation Controller Board SDP $99.00 Yes -
SDP-PMD-IB1Z Status: Production Evaluation Interposer Board PMOD to SDP w/ Power Supply $55.00 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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