Features and Benefits
- Micropower at high voltage (18V): 22 µA maximum
- Low input bias current: 20 pA maximum
- Gain bandwidth product: 240 kHz at AV =100 typical
- Unity-gain crossover: 240 kHz
- −3 dB closed-loop bandwidth: 310 kHz
- Slew rate: 80 V/ms
- Large signal voltage gain: 110 dB minimum
- Single-supply operation: 2.7 V to 18 V
- Dual-supply operation: ±1.35 V to ±9 V
- Unity-gain stable
- Excellent electromagnetic interference immunity
The AD8546 and AD8548 are dual and quad micropower, high input impedance amplifiers optimized for low power and wide operating supply voltage range applications.
The AD8546 / AD8548 rail-to-rail input/output (RRIO) feature provides increased dynamic range to drive low frequency data converters, making these amplifiers ideal for dc gain and buffering of sensor front ends or high impedance input sources used in wireless or remote sensors or transmitters.
The low supply current specification (22 µA) of the AD8546 / AD8548 over a wide operating voltage range of 2.7 V to 18 V or dual supplies (±1.35 V to ±9 V) makes these amplifiers useful for a variety of battery-powered, portable applications, such as ECGs, pulse monitors, glucose meters, smoke and fire detectors, vibration monitors, and backup battery sensors.
The AD8546 / AD8548 are specified over the extended industrial temperature range of −40°C to +125°C. The AD8546 is available in an 8-lead MSOP package; the AD8548 is available in a 14-lead SOIC_N package.
- Portable medical equipment
- Remote sensors
- Transimpedance amplifiers
- Current monitors
- 4 mA to 20 mA loop drivers
- Buffer/level shifting
Product Lifecycle 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)
The universal precision op amp evaluation boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs compliant. See references below on what board to order by lead count and package.
- EVAL-PRAOPAMP-2CPZ (dual 8-lead LFCSP) CP-8
- EVAL-PRAOPAMP-2RMZ (dual 8-lead MSOP) RM-8
- EVAL-PRAOPAMP-2RZ (dual 8-lead SOIC) R-8
Documentation & Resources
MT-047: Op Amp Noise2/14/2015
MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps2/14/2015
Don’t Get Caught Speeding1/1/2015
Exposed Paddles and Downbonds Improve Performance and Reduce Pin Count12/1/2014
The Diamond Plot7/1/2014
Overrange Flag Indicates Data Validity11/1/2013
Design Tools and Support Communities Make Analog Fun, not Fearful10/1/2013
EngineerZone Makes Getting Answers a Breeze9/1/2013
Soft Clipping vs. Hard Clipping8/1/2013
Crystal Radio Sets and Op Amps—Both Can Detect RF Signals6/1/2013
A Capaciticectomy? Sounds Awfully Painful!6/1/2008
Tools & Simulations
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.
Models for the following parts are available in LTspice:
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|
|AD8546ARMZ||Material Declaration||Reliability Data||8-Lead MSOP|
|AD8546ARMZ-R7||Material Declaration||Reliability Data||8-Lead MSOP|
|AD8546ARMZ-RL||Material Declaration||Reliability Data||8-Lead MSOP|
|Wafer Fabrication Data|
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Sample & Buy
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Please see the latest communication from our CCO regarding lead times.
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Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
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.