ADA4922-1:  High Voltage, Differential 18-Bit ADC Driver

The ADA4922-1 is a differential driver for 16-bit to 18-bit ADCs that have input ranges up to ±10 V. Configured in an easy-to-use, single-ended-to-differential configuration, the ADA4922-1 requires ...More

ADA4922-1:  High Voltage, Differential 18-Bit ADC Driver

Product Description

The ADA4922-1 is a differential driver for 16-bit to 18-bit ADCs that have input ranges up to ±10 V. Configured in an easy-to-use, single-ended-to-differential configuration, the ADA4922-1 requires no external components to drive ADCs. The ADA4922-1 provides essential benefits such as low distortion and high SNR that are required for driving ADCs with resolutions up to 18 bits.

With a wide supply voltage range (5 V to 26 V), rail-to-rail output, high input impedance, and fixed gain of +1 (single ended) or +2 (differential), the ADA4922-1 is designed to drive ADCs found in a variety of applications, including industrial instrumentation.

The ADA4922-1 is manufactured on ADI’s proprietary second-generation XFCB process that enables the amplifier to achieve excellent performance on high supply voltages.

The ADA4922-1 is available in an 8-lead 3 mm × 3 mm LFCSP package as well as an 8-lead SOIC package. Both packages are equipped with an exposed paddle for more efficient heat transfer. The ADA4922-1 is rated to work over the extended industrial temperature range, −40°C to +85°C.

Features

  • Single-ended-to-differential conversion
  • Excellent linearity (Vo, DIFF = 40 V p-p)
    120 dB THD at 5 kHz
    18-bit distortion to 50 kHz
  • Low differential output referred noise: 11 nV/√Hz
    114 dB SNR
  • Wide supply range: 5 V to 26 V
  • High input impedance
  • Fixed gain of +1 (single ended) or +2 (differential)
    No external components
  • High speed
    90 MHz, −3 dB bandwidth (G = +1)
  • Fast settling time
  • Rail-to-rail output
  • Disable
  • Available in space-saving thermally enhanced packages
    3 mm × 3 mm LFCSP
    8-lead SOIC_EP

Diagrams

ADA4922-1 Diagram
Functional Block Diagram for ADA4922-1

Specifications

-3 dB BW (MHz) 38MHz
Minimum Gain (Acl) 1
Supply Current (max) 9.4mA
Slew Rate (V/us) 730V/µs
Distortion (2nd) (dBc) -116dBc
Distortion (3rd) (dBc) -109dBc

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Part# -3 dB BW (MHz) Minimum Gain (Acl) Voltage Supply (V) Supply Current (max) Slew Rate (V/us) Distortion (2nd) (dBc) Distortion (3rd) (dBc) Package Price* (1000-4999)
AD6630 700 - +/- 5 30mA 3700 - - 16-Lead SOIC $4.13
AD8132 350 1 +/- 5 10.7mA 1200 -97 -100 8-Lead MSOP, 8-Lead SOIC $1.65
AD8137 110 1 +/- 6 3.6mA 450 -85 -85 8-Lead SOIC $1.09
AD8138 320 1 +/- 5 20mA 1500 -94 -114 8-Lead CSP, 8-Lead SOIC $3.75
AD8139 410 1 5 to 12 24.5mA 800 -90 -105 8-Lead CSP, 8-Lead SOIC $3.59
AD8350 900 - 4 to 11 32mA 2000 -67 -70 8-Lead SOIC/8-Lead uSOIC $2.49
AD8351 2200 1 3 to 5.5 32mA 13000 -79 -81 10-Lead uSOIC $2.65
AD8352 2200 - 3 to 5.5 37mA 11000 -81 -82 16-Lead LFCSP $3.49
ADA4922-1 38 1 +/- 12 9.4mA 730 -116 -109 - $3.59
ADA4937-1 1900 1 - 39.5mA 6000 -70 -84 16-Lead LFCSP $3.79
ADA4939-1 1400 2 3 to 5 37.7mA 6800 -77 -95 16-Lead LFCSP $3.79
ADA4939-2 1400 2 3 to 5 37.7mA 6800 -77 -91 16-Lead LFCSP $5.69
ADA4941-1 30 2 - 2.3mA 22 -75 -71 8-Lead LFCSP, 8-Lead SOIC $2.39

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

Pricing, Packaging & Availability

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For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
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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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

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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