1. Products
  2. A/D Converters (ADC)
  3. Precision A/D Converters
  4. Simultaneous Sampling A/D Converters
  5. AD7606C-18


Features and Benefits

  • 18-bit ADC with 1 MSPS on all channels
  • Input buffer with 1 MΩ minimum analog input impedance (RIN)
  • Single 5 V analog supply and 1.71 V to 5.25 V VDRIVE
  • Per channel selectable analog input ranges
    • Bipolar single-ended: ±12.5 V, ±10 V, ±6.25 V, ±5 V, ±2.5 V
    • Unipolar single-ended: 0 V to 12.5 V, 0 V to 10 V, 0 V to 5 V
    • Bipolar differential: ±20 V, ±12.5 V, ±10 V, ±5 V
  • Two bandwidth options: 25 kHz and 220 kHz, per channel
  • Flexible digital filter, oversampling ratio up to 256
  • −40°C to +125°C operating range
  • ±21 V input clamp protection with 6 kV ESD
  • Pin to pin compatible to the AD7606B, AD7608, and AD7609
  • Performance
    • 93 dB typical SNR for ±20 V bipolar differential range
    • 102 dB SNR, oversampling by 32
    • −100 dB typical THD for all other ranges
    • TUE = 0.05% of FSR maximum, external reference
    • ±0.5 ppm/°C typical PFS and NFS error drift
    • ±3 ppm/°C typical reference temperature coefficient
  • Calibration and Diagnostics
    • Per channel system phase, offset, and gain calibration
    • Analog input open circuit detection feature
    • Self diagnostics and monitoring features
    • CRC error checking on read and write data and registers

Product Details

The AD7606C-18 is an 18-bit, simultaneous sampling, analog-to-digital data acquisition system (DAS) with eight channels. Each channel contains analog input clamp protection, a programmable gain amplifier (PGA), a low-pass filter (LPF), and an 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). The AD7606C-18 also contains a flexible digital filter, a low drift, 2.5 V precision reference, a reference buffer to drive the ADC, and flexible parallel and serial interfaces.

The AD7606C-18 operates from a single 5 V supply and accommodates the following input ranges when sampling at throughput rates of 1 MSPS for all channels:

  • Bipolar single-ended: ±12.5 V, ±10 V, ±6.25 V, ±5 V, and ±2.5 V
  • Unipolar single-ended: 0 V to 12.5 V, 0 V to 10 V, and 0 V to 5 V
  • Bipolar differential: ±20 V, ±12.5 V, ±10 V, and ±5 V

The input clamp protection tolerates voltages up to ±21 V. The single supply operation, on-chip filtering, and high input impedance eliminate the need for external driver op amps, which require bipolar supplies. For applications with lower throughput rates, the AD7606C-18 flexible digital filter can be used to improve noise performance.

In hardware mode, the AD7606C-18 is fully compatible with the AD7608 and AD7609. In software mode, the following advanced features are available:

  • Analog input range selectable per channel with added ranges available
  • High bandwidth mode (220 kHz) selectable per channel
  • Additional oversampling options with an oversampling ratio up to 256
  • System gain, system offset, and system phase calibration, per channel
  • Analog input open circuit detector
  • Diagnostic multiplexer
  • Monitoring functions (serial peripheral interface (SPI) invalid read and write, cyclic redundancy check (CRC), busy stuck monitor, and reset detection)

Note that throughout the data sheet, multifunction pins, such as the RD/SCLK pin, are referred to either by the entire pin name or by a single function of the pin, for example, the SCLK pin, when only that function is relevant.


  • Power line monitoring
  • Protective relays
  • Multiphase motor control
  • Instrumentation and control systems
  • Data acquisition systems

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Software & Systems Requirements

Code Examples


AD7606B/C ACE Remote Control Example Code

By using ACE Remote Control, AD7606B and AD7606C plug-ins can be automated to perform several evaluation activities across the different analog input ranges, bandwidth modes, channels, etc. Different example code will be given.

Mbed Support


AD7606 Mbed IIO Application

This page gives an overview of using the ARM Mbed platform supported firmware example with Analog Devices AD7606 Evaluation board and SDP-K1 controller board.

Learn how to get started with Mbed

Mbed is an open source, development environment for ARM microcontrollers.

Tools & Simulations

Product Recommendations

AD7606C-18 Companion Parts

Recommended Digital Isolators

Recommended Voltage References

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
AD7606C-18BSTZ Material Declaration Reliability Data 64-Lead LQFP (10mm x 10mm)
AD7606C-18BSTZ-RL Material Declaration Reliability Data 64-Lead LQFP (10mm x 10mm)
Wafer Fabrication Data

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Sample & Buy

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Evaluation Boards

Pricing displayed is based on 1-piece.

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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.