Overview
Features and Benefits
- High speed
850 MHz, -3 dB bandwidth (G = +1, RL = 1kΩ), LFSCP)
750 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, SOIC)
2800 V/µs slew rate - Low distortion:
-88 dBc @ 10 MHz (G = +1, RL = 1kΩ) - Low power: 5 mA/amplifier @ 10 V
- Low noise: 4.4 nV/√Hz
- Wide supply voltage range: 5 V to 10 V
- Power-down feature
- Available in 3 mm × 3 mm 8-lead LFCSP (single), 8-lead SOIC (single), and 4 mm × 4 mm 16-lead LFCSP (dual)
Product Details
The ADA4857 is a unity gain stable, high speed, voltage feedback amplifier with low distortion, low noise, and high slew rate. With a spurious-free dynamic range (SFDR) of −88 dBc @ 10 MHz, the ADA4857 is an ideal solution for a variety of applications including ultrasounds, ATE, active filters, and ADC drivers. The Analog Devices, Inc., proprietary next-generation XFCB process and innovative architecture enables such high performance amplifiers.The ADA4857 has 850 MHz bandwidth, 2800 V/μs slew rate, and settles to 0.1% in 15 ns. With a wide supply voltage range (5 V to 10 V), the ADA4857 is an ideal candidate for systems that require high dynamic range, precision, and speed.
The ADA4857-1 amplifier is available in a 3 mm × 3 mm, 8-lead LFCSP and a standard 8-lead SOIC. The ADA4857-2 is available in a 4 mm × 4 mm, 16-lead LFSCP. The LFCSP features an exposed paddle that provides a low thermal resistance path to the printed circuit board (PCB). This path enables more efficient heat transfer and increases reliability. The ADA4857 works over the extended industrial temperature range (−40°C to +125°C).
Applications
- Instrumentation
- IF and baseband amplifiers
- Active filters
- ADC drivers
- DAC buffers
Product Categories
Markets and Technologies
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)
Documentation & Resources
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AN-0993: Active Filter Evaluation Board for Analog Devices, Inc., - Low Distortion Pinout Op Amps (Rev. 0)2/14/2015PDF107 kB
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AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps2/14/2015PDF55 kB
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AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (Rev. 0)2/14/2015PDF166 kB
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UG-919: Universal Evaluation Board for Single, 8-Lead LFCSP Operational Amplifiers (Rev. 0)3/10/2016PDF196 K
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UG-755: 8-Lead SOIC Amplifier Evaluation Board User Guide (Rev. A)4/14/2015PDF248 K
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UG-084: Evaluation Board for Single, High Speed Operational Amplifiers (8-Lead, SOIC with Dedicated Feedback Pin and Exposed Paddle)2/25/2010PDF243 kB
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MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR2/14/2015PDF104 kB
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MT-052: Op Amp Noise Figure: Don't Be Misled2/14/2015PDF60 kB
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MT-050: Op Amp Total Output Noise Calculations for Second-Order System2/14/2015PDF38 kB
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MT-049: Op Amp Total Output Noise Calculations for Single-Pole System2/14/2015PDF40 kB
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MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth2/14/2015PDF81 kB
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MT-047: Op Amp Noise2/14/2015PDF72 kB
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MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps2/14/2015PDF62 kB
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MT-059: Compensating for the Effects of Input Capacitance on VFB and CFB Op Amps Used in Current-to-Voltage Converters2/14/2015PDF69 kB
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MT-033: Voltage Feedback Op Amp Gain and Bandwidth2/14/2015PDF251 kB
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MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps2/14/2015PDF66 kB
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MT-056: High Speed Voltage Feedback Op Amps2/3/2009PDF109 kB
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MT-032: Ideal Voltage Feedback (VFB) Op Amp12/11/2008PDF65 kB
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SAR ADC & Driver Quick-Match Guide9/13/2013PDF251 kB
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Apples and Oranges—Correlating Specifications Requires Common Test Conditions11/1/2012
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Dual Op Amps and Double Agents7/1/2012
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The Electromotive Force and Op Amps4/1/2012
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Beware of big claims and large numbers.1/1/2012
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A Foolish Question about Op Amps and Capacitors4/1/2011
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Amplifier, attenuator or both?4/1/2010
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Capacitive Sensors: Rugged Enough for the Real World?2/1/2008
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Are leaky amps sinking your design?8/1/2007
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Modern DACs and DAC Buffers Improve System Performance, Simplify Design3/1/2012 Analog Dialogue
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:
ADA4857
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
ADA4857 SPICE Macro Model
5.66 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.
VRMS/dBm/dBu/dBV calculators
A utility to convert between standard units of power measurement and signal strength.
Power Dissipation vs Die Temp
This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
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 |
|---|---|---|---|---|
| ADA4857-1YCPZ-R7 | Material Declaration | Reliability Data | 8-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADA4857-1YCPZ-RL | Material Declaration | Reliability Data | 8-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADA4857-1YRZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| ADA4857-1YRZ-R7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| Wafer Fabrication Data |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
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Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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Evaluation Boards
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.