Overview
Features and Benefits
- High speed and fast settling
−3 dB bandwidth: 220 MHz (G = +1)
Slew rate: 170 V/μs
Settling time to 0.1%: 28 ns - Video specifications (G = +2, RL = 150 Ω)
0.1 dB gain flatness: 25 MHz
Differential gain error: 0.05%
Differential phase error: 0.25° - Single-supply operation
Wide supply range: 2.7 V to 5.5 V
Output swings to within 50 mV of supply rails - Low distortion: 79 dBc SFDR at 1 MHz
- Linear output current: 125 mA at −40 dBc
- Low power:
4.4 mA per amplifier
Product Details
The ADA4891-1 (single), ADA4891-2 (dual), ADA4891-3 (triple), and ADA4891-4 (quad) are CMOS, high speed amplifiers that offer high performance at a low cost. The amplifiers feature true single-supply capability, with an input voltage range that extends 300 mV below the negative rail.
In spite of their low cost, the ADA4891 family provides high performance and versatility. The rail-to-rail output stage enables the output to swing within 50 mV of each rail, enabling maximum dynamic range.
The ADA4891 family of amplifiers is ideal for imaging applications, such as consumer video, CCD buffers, and contact image sensor buffers. Low distortion and fast settling time also make them ideal for active filter applications.
The ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 are available in a wide variety of packages.
The ADA4891-1 is available in 8-lead SOIC and 5-lead SOT-23 packages.
The ADA4891-2 is available in 8-lead SOIC and 8-lead MSOP packages.
The ADA4891-3 and ADA4891-4 are available in 14-lead SOIC and 14-lead TSSOP packages.
The amplifiers are specified to operate over the extended temperature range of −40°C to +125°C.
Applications- Imaging
- Consumer video
- Active filters
- Coaxial cable drivers
- Clock buffers
- Photodiode preamp
- Contact image sensor and 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
-
SAR ADC & Driver Quick-Match Guide9/13/2013
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:
ADA4891
ADA4891-1
ADA4891-2
ADA4891-3
ADA4891-4
SPICE Models
CIR
ADA4891 SPICE Macro Model
5.57 K
For double amplifiers applications use the <a href="http://www.analog.com/ADA4891-2">ADA4891-2</a>, for triple use the <a href="http://www.analog.com/ADA4891-3">ADA4891-3</a>, and for quad use <a href="http://www.analog.com/ADA4891-4"> ADA4891-4</a>
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.
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 |
|---|---|---|---|---|
| ADA4891-2ARMZ | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADA4891-2ARMZ-R7 | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADA4891-2ARMZ-RL | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADA4891-2ARZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| ADA4891-2ARZ-R7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| ADA4891-2ARZ-RL | Material Declaration | Reliability Data | 8-Lead SOIC | |
| ADA4891-2WARMZ-R7 | 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
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Lead Times
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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.