ADA4937-1
Ultralow Distortion Differential ADC Driver (Single)
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Overview
Features and Benefits
- Extremely low harmonic distortion (HD)
- −112 dBc HD2 at 10 MHz
- −84 dBc HD2 at 70 MHz
- −77 dBc HD2 at 100 MHz
- −102 dBc HD3 at 10 MHz
- −91 dBc HD3 at 70 MHz
- −84 dBc HD3 at 100 MHz
- Low input voltage noise: 2.2 nV/√Hz
- High speed
- −3 dB bandwidth of 1.9 GHz, G = 1
- Slew rate: 6000 V/μs, 25% to 75%
- Fast overdrive recovery of 1 ns
- 0.5 mV typical offset voltage
- Externally adjustable gain
- Differential-to-differential or single-ended-to-differential
- operation
- Adjustable output common-mode voltage
- Single-supply operation: 3.3 V to 5 V
Product Details
The ADA4937-1 / ADA4937-2 are low noise, ultralow distortion, high speed differential amplifiers. They are an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The adjustable level of the output common mode allows the ADA4937-1/ADA4937-2 to match the input of the ADC. The internal common-mode feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products.
With the ADA4937-1 / ADA4937-2, differential gain configurations are easily realized with a simple external feedback network of four resistors that determine the closed-loop gain of the amplifier.
The ADA4937-1 / ADA4937-2 are fabricated using Analog Devices, Inc., proprietary silicon-germanium (SiGe), complementary bipolar process, enabling them to achieve very low levels of distortion with an input voltage noise of only 2.2 nV/√Hz. The low dc offset and excellent dynamic performance of the ADA4937-1/ADA4937-2 make them well-suited for a wide variety of data acquisition and signal processing applications.
The ADA4937-1 / ADA4937-2 are available in a Pb-free, 3 mm × 3 mm, 16-lead LFCSP (ADA4937-1, single) or a Pb-free, 4 mm × 4 mm, 24-lead LFCSP (ADA4937-2, dual). The pinout has been optimized to facilitate PCB layout and minimize distortion. The ADA4937-1 / ADA4937-2 are specified to operate over the automotive (−40°C to +105°C) temperature range and between 3.3 V and 5 V supplies.
Applications
- ADC drivers
- Single-ended-to-differential converters
- IF and baseband gain blocks
- Differential buffers
- Line drivers
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-1508: Driving the AD9233, AD9246, and AD9254 ADCs in AC-Coupled Baseband Applications (Rev. B)11/17/2017PDF154 K
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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-1026: High Speed Differential ADC Driver Design Considerations (Rev. A)2/14/2015PDF355 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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High Speed Amplifiers Selection Table2/27/2008PDF77 kB
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CN-0051: Driving the AD9233/9246/9254 ADCs in AC-Coupled Baseband Applications9/20/2010PDF111 kB
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"Rules of the Road" for High-Speed Differential ADC Drivers5/1/2009 Analog Dialogue
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Ask The Application Engineer—36: Wideband A/D Converter Front-End Design Considerations II: Amplifier-or Transformer Drive for the ADC?2/1/2007 Analog Dialogue
Tools & Simulations
SPICE Models
CIR
ADA4937 SPICE Macro Model
3.85 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 |
|---|---|---|---|---|
| ADA4937-1YCPZ-R7 | Material Declaration | Reliability Data | 16-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADA4937-1YCPZ-RL | Material Declaration | Reliability Data | 16-Lead LFCSP (3mm x 3mm w/ EP) | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
ADA4937-1 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
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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.