Overview

Features and Benefits

  • Throughput
    570 kSPS (Warp Mode)
    500 kSPS (Normal Mode)
  • INL: ±2.5 LSB Max (± 0.0038% of Full Scale)
  • 16-Bit Resolution with No Missing Codes
  • S/(N+D): 90 dB Typ @ 180 kHz
  • THD: –100 dB Typ @ 180 kHz
    Analog Input Voltage Ranges
    Bipolar: ±10 V, ±5 V, ±2.5 V
    Unipolar: 0 V to 10 V, 0 V to 5 V, 0 V to 2.5 V
  • Both AC and DC Specifications
  • No Pipeline Delay
  • Parallel (8/16 Bits) and Serial 5 V/3 V Interface
  • SPI®/QSPI/MICROWIRE/DSP Compatible
  • Single 5 V Supply Operation
  • Power Dissipation
    64 mW Typical
    15 µW @ 100 SPS
  • Power-Down Mode: 7 μW Max

Product Details

The AD7665 is a 16-bit, 570 kSPS, charge redistribution SAR, Analog-to-Digital Converter that operates from a single 5 V power supply. It contains a high-speed 16-Bit sampling ADC, a resistor input scalar, which allows various input ranges, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.

The AD7665 is hardware factory calibrated and is comprehensively tested to ensure such ac parameters as signal-to-noise ratio (SNR) and total harmonic distortion (THD), in addition to the more traditional dc parameters of gain, offset, and linearity.

It features a very high sampling rate mode (Warp) and, for asynchronous conversion rate applications, a fast mode (Nor-mal) and, for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput. It is fabricated using Analog Devices’ high-performance, 0.6 micron CMOS process and is available in a 48-lead LQFP with operation specified from -40°C to +85°C.

PRODUCT HIGHLIGHTS

  1. Fast Throughput
    The AD7665 is a very high speed (570 kSPS in Warp Mode and 500 kSPS in Normal Mode), charge redistribution, 16-bit SAR ADC.
  2. Single-Supply Operation
    The AD7665 operates from a single 5 V supply, dissipates only 64 mW typical, even lower when a reduced throughput is used with the reduced power mode (Impulse) and a power-down mode.
  3. Superior INL
    The AD7665 has a maximum integral nonlinearity of 2.5 LSB with no missing 16-bit code.
  4. Serial or Parallel Interface
    Versatile parallel (8 bits or 16 bits) or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic.

APPLICATIONS

  • Data Acquisition
  • Communication
  • Instrumentation
  • Spectrum Analysis
  • Medical Instruments
  • Process Control

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Product Recommendations

AD7665 Companion Parts

Recommended Precison References - 2.5V

  • For high output current applications: ADR431, REF192.
  • For applications requiring the lowest noise performance and output trim adjust: ADR441.
  • For cost sensitive applications: AD1582, ADR391.
  • For wide supply applications: AD780.

Recommended Input Buffer Amplifiers

Recommended Voltage Regulators

  • For low dropout regulators with inputs up to 5V: ADP151, ADP160.
  • For high current switching regulators with inputs up to 5V: ADP2114.

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.

PCN-PDN Information

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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.