AD8506:  Dual 20 μA Maximum, Rail-to-Rail I/O, Zero Input Crossover Distortion Amplifiers

The AD8506/AD8508 are dual and quad micropower amplifiers featuring rail-to-rail input and output swings while operating from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power ...More

AD8506:  Dual 20 μA Maximum, Rail-to-Rail I/O, Zero Input Crossover Distortion Amplifiers

Product Description

The AD8506/AD8508 are dual and quad micropower amplifiers featuring rail-to-rail input and output swings while operating from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies. Using a new circuit technology, these low cost amplifiers offer zero input crossover distortion (excellent PSRR and CMRR performance) and very low bias current, while operating with a supply current of less than 20 μA per amplifier. This amplifier family offers the lowest noise in its power class.

This combination of features makes the AD8506/AD8508 amplifiers ideal choices for battery-powered applications because they minimize errors due to power supply voltage variations over the lifetime of the battery and maintain high CMRR even for a rail-to-rail input op amp. Remote battery-powered sensors, handheld instrumentation and consumer equipment, hazard detection (for example, smoke, fire, and gas), and patient monitors can benefit from the features of the AD8506/AD8508 amplifiers.

The AD8506/AD8508 are specified for both the industrial temperature range of −40°C to +85°C and the extended industrial temperature range of −40°C to +125°C. The AD8506 dual amplifi-er is available in 8-lead MSOP and 8-ball WLCSP packages. The AD8508 quad amplifier is available in 14-lead TSSOP and 14-ball WLCSP packages. The AD8506/AD8508 are members of a growing series of zero crossover op amps offered by Analog Devices, Inc., including the ADA4505-2/ADA4505-4, which also operates from a single 1.8 V to 5 V supply or from dual ±0.9 V to ±2.5 V power supplies.

Applications
  • Pressure and position sensors
  • Remote security
  • Bio sensors
  • IR thermometers
  • Battery-powered consumer equipment
  • Hazard detectors

    • Data Sheet, Rev. C, 3/09

    Features

    • PSRR: 100 dB minimum
    • CMRR: 105 dB typical
    • Very low supply current: 20 μA per amplifier maximum
    • 1.8 V to 5 V single-supply or ±0.9 V to ±2.5 V dual-supply operation
    • Rail-to-rail input and output
    • Low noise: 45 nV/√Hz @ 1 kHz
    • 2.5 mV offset voltage maximum
    • Very low input bias current: 1 pA typical

    Diagrams

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    • Symbols and Footprints
    AD8506 Pin Configuration Diagram
    AD8506 Pin Configuration Diagram

    Specifications

    -3dB Bandwidth 150kHz
    Slew Rate 13mV/µs
    Vos 2.5mV
    Ib 1pA
    Input Noise (nV/rtHz) 45nV/rtHz
    Vcc-Vee Supply (V) 1.8 to 5.5
    Iq per Amplifier 20µA
    # OpAmps per Pkg 2
    Operating Temp Range -40 to +125
    Packages CSP,SOP

    Explore Other Products

    Part# Small Signal Bandwidth Slew Rate Vos Ib V Noise Density Amplifiers Per Package Widest Temp Range (°C)
    AD8607 400KHz 100mV/µs 12µV 200fA 22nV/rtHz 2 -40 to +125
    AD8667 520KHz 260mV/µs 30µV 300fA 21nV/rtHz 2 -40 to +125
    AD8506 150KHz 13mV/µs 2.5mV 1pA 45nV/rtHz 2 -40 to +125
    AD8617 400KHz 100mV/µs 400µV 200fA 22nV/rtHz 2 -40 to +125
    AD8642 3.5MHz 3V/µs 50µV 250fA 27.5nV/rtHz 2 -40 to +125
    AD8662 4MHz 3.5V/µs 1mV 300fA 12nV/rtHz 2 -40 to +125
    AD8666 4MHz 3.5V/µs 600µV 200fA 10nV/rtHz 2 -40 to +125
    AD8602 8.4MHz 6V/µs 500µV 200fA 18nV/rtHz 2 -40 to +125
    AD8606 10MHz 5V/µs 20µV 200fA 6.5nV/rtHz 2 -40 to +125
    AD8692 10MHz 5V/µs 400µV 200fA 8nV/rtHz 2 -40 to +125
    AD8646 24MHz 11V/µs 600µV 300fA 6nV/rtHz 2 -40 to +125
    Pricing, Packaging & Availability

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    Pin Count
    Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

    Temperature Range
    This is the acceptable operating range of the device. The various ranges specified are as follows:
    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
    • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
    • Automotive: -40 to +125 degrees Celsius
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    *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.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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