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Overview

Features and Benefits

  • High performance
    • Throughput: 2 MSPS per channel maximum
    • INL: ±3 ppm maximum from −40°C to +125°C
    • SNR: 97.4 dB typical
    • THD: −127 dB typical
    • NSD: −157.4 dBFS/Hz typical
  • Low power
    • 15 mW per channel at 2 MSPS
    • 1.5 mW per channel at 10 kSPS
  • Easy Drive features reduce system complexity
    • Low 0.6 μA input current for dc inputs
    • Wide common-mode input range: −(1/128) × VREF to +(129/128) × VREF
  • Flexible external reference voltage range: 4.096 V to 5 V
    • Accurate integrated reference buffer with 2 μF bypass capacitor
  • Programmable block averaging filter with up to 216 decimation
    • Extended sample resolution to 30 bits
    • Over range and synchronization bits
  • Flexi-SPI digital interface
    • 1, 2, or 4 SDO lanes per channel allows slower SCK
    • Echo clock mode simplifies use of digital isolator
    • Compatible with 1.2 V to 1.8 V logic
  • 7 mm × 7 mm 64-Ball CSP_BGA package with internal supply and reference capacitors to help reduce system footprint

Product Details

The AD4630-16 is a two-channel, simultaneous sampling, Easy Drive, 2 MSPS successive approximation register (SAR) analog-to-digital converter (ADC). With a guaranteed maximum ±3 ppm integral nonlinearity (INL) and no missing codes at 16-bits, the AD4630-16 achieves excellent precision from −40°C to +125°C. Figure 1 in the data sheet shows the functional architecture of the AD4630-16.

A low-drift, internal precision reference buffer eases voltage reference sharing with other system circuitry. The AD4630-16 offers a typical dynamic range of 97.4 dB when using a 5 V reference. The low noise floor enables signal chains requiring less gain and lower power. A block averaging filter with programmable decimation ratio is available and can reduce noise for low bandwidth signals, improving accuracy. The wide differential input and common-mode ranges allow inputs to use the full (±VREF range without saturating, simplifying signal conditioning requirements and system calibration. The improved settling of the Easy Drive analog inputs broadens the selection of analog front-end components compatible with the AD4630-16. Both single-ended and differential signals are supported.

The versatile Flexi-SPI serial peripheral interface (SPI) eases host processor and ADC integration. A wide data clocking window, multiple serial data output (SDO) lanes, and optional dual data rate (DDR) data clocking can reduce the serial clock to 10 MHz while operating at a sample rate of 2 MSPS. Echo clock mode can relax the timing requirements and simplify the use of digital isolators.

The ball grid array (BGA) package of the AD4630-16 integrates all critical power supply and reference bypass capacitors, reducing the footprint and system component count, and lessening sensitivity to board layout.

APPLICATIONS

  • Automatic test equipment
  • Digital control loops
  • Medical instrumentation
  • Seismology
  • Semiconductor manufacturing
  • Scientific instrumentation

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)

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

AD4630-16
AD4630-24

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.

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Evaluation Boards

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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.