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 DetailsThe 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).
- IF and baseband amplifiers
- Active filters
- ADC drivers
- DAC buffers
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)
The Universal Single High Speed Amplifier Evaluation Boards are bare boards that enable users to quickly prototype a variety of amplifier circuits, which minimizes risk and reduces time to market. These boards are all RoHs Compliant. See ordering guide below on what board to order by lead count and package.
Features & Benefits
- Enables quick breadboarding/prototyping
- User defined circuit configuration
- Edge mounted Subminiature Version A (SMA) connector
- provisions Easy connection to test equipment and other circuits
Documentation & Resources
AN-0993: Active Filter Evaluation Board for Analog Devices, Inc., - Low Distortion Pinout Op Amps (Rev. 0)2/14/2015107 kB
AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps2/14/201555 kB
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (Rev. 0)2/14/2015166 kB
UG-919: Universal Evaluation Board for Single, 8-Lead LFCSP Operational Amplifiers (Rev. 0)3/10/2016196 K
UG-755: 8-Lead SOIC Amplifier Evaluation Board User Guide (Rev. A)4/14/2015248 K
UG-084: Evaluation Board for Single, High Speed Operational Amplifiers (8-Lead, SOIC with Dedicated Feedback Pin and Exposed Paddle)2/25/2010243 kB
MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR2/14/2015104 kB
MT-052: Op Amp Noise Figure: Don't Be Misled2/14/201560 kB
MT-050: Op Amp Total Output Noise Calculations for Second-Order System2/14/201538 kB
MT-049: Op Amp Total Output Noise Calculations for Single-Pole System2/14/201540 kB
MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth2/14/201581 kB
MT-047: Op Amp Noise2/14/201572 kB
MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps2/14/201562 kB
MT-059: Compensating for the Effects of Input Capacitance on VFB and CFB Op Amps Used in Current-to-Voltage Converters2/14/201569 kB
MT-033: Voltage Feedback Op Amp Gain and Bandwidth2/14/2015251 kB
MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps2/14/201566 kB
MT-056: High Speed Voltage Feedback Op Amps2/3/2009109 kB
MT-032: Ideal Voltage Feedback (VFB) Op Amp12/11/200865 kB
SAR ADC & Driver Quick-Match Guide9/13/2013251 kB
Apples and Oranges—Correlating Specifications Requires Common Test Conditions11/1/2012
Dual Op Amps and Double Agents7/1/2012
The Electromotive Force and Op Amps4/1/2012
Beware of big claims and large numbers.1/1/2012
A Foolish Question about Op Amps and Capacitors4/1/2011
Amplifier, attenuator or both?4/1/2010
Capacitive Sensors: Rugged Enough for the Real World?2/1/2008
Are leaky amps sinking your design?8/1/2007
Modern DACs and DAC Buffers Improve System Performance, Simplify Design3/1/2012 Analog Dialogue
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:
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
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.
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.
A utility to convert between standard units of power measurement and signal strength.
This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
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|
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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.
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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.