ADA4661-2
18 V, Precision, 725 μA, 4 MHz CMOS RRIO Operational Amplifier
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Overview
Features and Benefits
- Low power at high voltage (18 V): 725 μA maximum
- Low offset voltage:
- 150 μV maximum at Vsy/2
- 300 μV maximum over entire common mode range
- Low input bias current: 15 pA maximum
- Gain bandwidth product: 4 MHz typical at Av = 100
- Unity-gain crossover: 4 MHz typical
- -3 dB closed-loop bandwidth: 2.1 MHz typical
- Single-supply operation: 3 V to 18 V
- Dual-supply operation: ±1.5 V to ±9 V
- Unity-gain stable
- Download ADA4661-2-KGD Data Sheet
- Available As Known Good Die and fully guaranteed to data sheet specifications
Product Details
The ADA4661-2 is a dual, precision, rail-to-rail input/output amplifier optimized for low power, high bandwidth, and wide operating supply voltage range applications.
The ADA4661-2 performance is guaranteed at 3.0 V, 10 V, and 18 V power supply voltages. It is an excellent selection for applications that use single-ended supplies of 3.3 V, 5 V, 10 V, 12 V and 15 V, and dual supplies of ±2.5 V, ±3.3 V, and ±5 V. It uses the Analog Devices, Inc., patented DigiTrim® trimming technique, which achieves low offset voltage. Additionally, the unique design architecture of the ADA4661-2 allows it to have excellent power supply rejection, common-mode rejection, and offset voltage when operating in the common-mode voltage range of −VSY + 1.5 V to +VSY − 1.5 V.
The ADA4661-2 is specified over the extended industrial temperature range (−40°C to +125°C) and is available in 8-lead MSOP and 8-lead LFCSP (3 mm × 3 mm) packages.
Applications
- Current shunt monitors
- Active filters
- Portable medical equipment
- Buffer/level shifting
- High impedance sensor interfaces
- Battery powered instrumentation
Product Categories
Markets and Technologies
Product Lifecycle
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.
Documentation & Resources
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Sometimes, a Signal Needs to Ride the Rails5/1/2017
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Don’t Get Caught Speeding1/1/2015
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Exposed Paddles and Downbonds Improve Performance and Reduce Pin Count12/1/2014
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The Diamond Plot7/1/2014
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Overrange Flag Indicates Data Validity11/1/2013
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Design Tools and Support Communities Make Analog Fun, not Fearful10/1/2013
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EngineerZone Makes Getting Answers a Breeze9/1/2013
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Soft Clipping vs. Hard Clipping8/1/2013
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Do-it-Yourself ASICs7/1/2013
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Crystal Radio Sets and Op Amps—Both Can Detect RF Signals6/1/2013
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A Capaciticectomy? Sounds Awfully Painful!6/1/2008
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.
Models for the following parts are available in LTspice:
ADA4661-2
Precision ADC Driver Tool
The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input
SPICE Models
CIR
ADA4661 SPICE Macro Model
2.59 K
Design Tools
Analog Filter Wizard
Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.
Analog Photodiode Wizard
Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.
Amplifiers & Linear Tools
Design with confidence using these free tools for circuit simulation, design optimization and product selection.
Reference Designs (1)
Product Recommendations
ADA4661-2 Circuits
- 16 Bit, Biopotential Sensing Signal Chain
- 18 Bit, Biopotential Sensing Signal Chain
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 |
|---|---|---|---|---|
| ADA4661-2-KGD-WP | Material Declaration | Reliability Data | CHIPS OR DIE | |
| ADA4661-2ACPZ-R7 | Material Declaration | Reliability Data | 8-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADA4661-2ACPZ-RL | Material Declaration | Reliability Data | 8-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADA4661-2ARMZ | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADA4661-2ARMZ-R7 | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADA4661-2ARMZ-RL | Material Declaration | Reliability Data | 8-Lead MSOP | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
(*)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.
Lead Times
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Sampling
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