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ADA4960-1:  Low Distortion Ultrahigh Speed Differential ADC Driver

Product Details

Product Status:Recommended for New Designs

The ADA4960-1 is a high performance differential amplifier optimized for RF and IF applications. It achieves better than 63dB SFDR performance at frequencies up to 500 MHz, and 52dB up to 1GHz, making it an ideal driver for high speed 8-bit to 10-bit giga-sample analog-to-digital converters (ADCs).

Unlike other wideband differential amplifiers, the ADA4960-1 has buffered inputs that isolate the gain-setting resistor (RG) from the signal inputs. As a result, the ADA4960-1 maintains a constant 10 kΩ differential input resistance for gains of 6 dB to 15 dB, easing matching and input drive requirements. The ADA4960-1 has a nominal 150 Ω differential output resistance.

The device is optimized for wideband, low distortion performance at frequencies up to and beyond 1 GHz. These attributes, together with its wide gain adjust capability make this device the amplifier of choice for general-purpose IF and broadband applications where low distortion, noise, and power are critical.

The device also includes a unity gain buffer, for the buffering of DC signals such as the common-mode-input to the amplifier. This buffer is found between pins 6 (input) and pin5 (output). If this buffer is not used, the output can be left disconnected and the input can be grounded.

It is ideally suited for driving not only ADCs, but also mixers, pin diode attenuators, SAW filters, and multi-element discrete devices, as well as buffering high frequency DACs. The device is available in a single channel version in 3mm x 3mm, 16-lead LFCSP package. The device operates over a temperature range of -40C to +85C.

Applications

  • ADC drivers for giga-sample ADCs
  • Single-ended-to-differential converters
  • RF/IF gain block
  • Line drivers
  • Oscilloscopes
  • Satellite Communications
  • Data Acquisition
  • Electronic Surveillance and Countermeasures

FEATURES and BENEFITS

  • Adjustable output common-mode voltage
  • Externally adjustable gain
  • −3 dB bandwidth of 3GHz, (all gains)
  • Low harmonic distortion (H2/H3 SE->DIFF)
    -77/-67 dBc @ 250 MHz
    -69/-63 dBc @ 500 MHz
    -52/-63 dBc @ 1GHz
  • IMD3 @ 1GHz = 67dBc
  • Slew rate 8000 V/μs
  • Fast overdrive recovery of 1 ns
  • Low input voltage noise of 3.6 nV/√Hz
  • Low power dissipation: 60 mA quiescent current
  • 0.1 dB gain flatness to 300 MHz
  • Available in 16-Lead LFSCP package

Pin Configuration for ADA4960-1

Documentation

Title Content Type File Type
ADA4960-1: Low Distortion Ultrahigh Speed Differential ADC Driver Preliminary Data Sheet (Rev 0, 04/2010) (pdf, 109 kB) Data Sheets PDF
AN-1026: High Speed Differential ADC Driver Design Considerations  (pdf, 355 kB) Application Notes PDF
CN-0238: High Performance, 12-Bit, 500 MSPS Wideband Receiver with Antialiasing Filter  (pdf, 199 kB) Circuit Note PDF
MT-218: Multiple Feedback Band-Pass Design Example  (pdf, 0) Tutorials PDF
A Stress-Free Method for Choosing High-Speed Op Amps
A decision-tree approach to making the critical decision about high-speed op amp selection, including a look at some helpful tools.
Webcasts WEBCAST
Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3  (pdf, 1334 kB) Solutions Bulletins PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADA4960 SPICE Macro Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

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Price, packaging, availability

ADA4960-1 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADA4960-1ACPZ-R2 Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 250 $8.80 $8.80 Y  Material Info PCN Purchase
ADA4960-1ACPZ-R7 Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 1500 - $6.95 Y  Material Info PCN Purchase Sample
ADA4960-1ACPZ-RL Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 5000 - $6.95 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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