ADA4927-2
Ultralow Distortion Current Feedback Differential ADC Driver
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Overview
Features and Benefits
- Extremely low harmonic distortion
- −105 dBc HD2 at 10 MHz
- −91 dBc HD2 at 70 MHz
- −87 dBc HD2 at 100 MHz
- −103 dBc HD3 at 10 MHz
- −98 dBc HD3 at 70 MHz
- −89 dBc HD3 at 100 MHz
- Better distortion at higher gains than VF amplifiers
- Low input voltage noise: 1.4 nV/√Hz
- High speed
- −3 dB bandwidth of 2.3 GHz
- 0.1 dB gain flatness: 150 MHz
- Slew rate: 5000 V/µs, 25% to 75%
- Fast 0.1% settling time: 10 ns
- Low input offset voltage: 0.3 mV typical
- Externally adjustable gain
- Stability and bandwidth controlled by feedback resistor
- See data sheet for additional features
Product Details
The ADA4927 is a low noise, ultralow distortion, high speed, current feedback differential amplifier that is an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The output common-mode level can easily be matched to the required ADC input common-mode levels. The internal common-mode feedback loop provides exceptional output balance and suppression of even-order distortion products.Differential gain configurations are easily realized using an external feedback network comprising four resistors. The current feedback architecture provides loop gain that is nearly independent of closed-loop gain, achieving wide bandwidth, low distortion, and low noise at higher gains and lower power consumption than comparable voltage feedback amplifiers.
The ADA4927 is fabricated using the Analog Devices, Inc., silicon-germanium complementary bipolar process, enabling very low levels of distortion with an input voltage noise of only 1.3 nV/√Hz. The low dc offset and excellent dynamic performance of the ADA4927 make it well suited for a wide variety of data acquisition and signal processing applications.
The ADA4927-1 is available in a Pb-free, 3 mm × 3 mm 16-lead LFCSP, and the ADA4927-2 is available in a Pb-free, 4 mm × 4 mm 24-lead LFCSP. The pinouts are optimized to facilitate printed circuit board (PCB) layout and to minimize distortion. They are specified to operate over the −40°C to +105°C temperature range.
Applications
- ADC drivers
- Single-ended-to-differential converters
- IF and baseband gain blocks
- Differential buffers
- Differential line drivers
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.
Evaluation Kits (1)
Documentation & Resources
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AN-282: Fundamentals of Sampled Data Systems2/14/2015PDF2131 kB
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AN-0990: Terminating a Differential Amplifier in Single-Ended Input Applications (Rev. 0)2/14/2015PDF181 kB
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AN-0992: Active Filter Evaluation Board for Differential Amplifiers (Rev. 0)2/14/2015PDF85 kB
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AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B)2/14/2015PDF115 kB
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AN-1026: High Speed Differential ADC Driver Design Considerations (Rev. A)2/14/2015PDF355 kB
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AN-584: Using the AD813X Differential Amplifier (Rev. 0)10/14/2002PDF174 kB
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MT-076: Differential Driver Analysis2/14/2015PDF95 kB
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MT-075: Differential Drivers for High Speed ADCs Overview2/14/2015PDF183 kB
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MT-218: Multiple Feedback Band-Pass Design Example2/10/2012PDF90 K
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"Rules of the Road" for High-Speed Differential ADC Drivers5/1/2009 Analog Dialogue
Tools & Simulations
SPICE Models
CIR
ADA4927 SPICE Macro Model
5.42 K
Design Tools
ADI DiffAmpCalc™
ADI's new ADI DiffAmpCalc™ is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.
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 |
|---|---|---|---|---|
| ADA4927-2YCPZ-R7 | Material Declaration | Reliability Data | 24-Lead LFCSP (4mm x 4mm w/ EP) | |
| ADA4927-2YCPZ-RL | Material Declaration | Reliability Data | 24-Lead LFCSP (4mm x 4mm w/ EP) | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
ADA4927-2 Discussions
Sample & Buy
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Lead Times
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Evaluation Boards
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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.