VCA2617RHBT

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VCA2617RHBT

2-Channel Variable Gain Amplifier

Packaging

Package | PIN: RHB | 32
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $14.89
10-24 $13.84
25-99 $13.36
100-249 $11.67
250-499 $11.10
500-749 $10.22
750-999 $9.17
1000+ $9.14

Features

  • INDEPENDENT CHANNEL CONTROLS:
    • Gain Range: 48dB
    • Clamping Levels
    • Post-Gain: 0, +6dB
  • LOW NOISE: 4.1nV/Hz
  • LOW POWER: 52mW/Channel
  • BANDWIDTH: 50MHz
  • HARMONIC DISTORTION: -53dBc at 5MHz
  • CROSSTALK: -61dB at 5MHz
  • 5V SINGLE SUPPLY
  • POWER-DOWN MODE
  • SMALL QFN-32 PACKAGE (5x5mm)
  • APPLICATIONS
    • MEDICAL AND INDUSTRIAL ULTRASOUND SYSTEMS
      • Suitable for 10-Bit and 12-Bit Systems
    • TEST EQUIPMENT
    • SONAR

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Texas Instruments  VCA2617RHBT

The VCA2617 is a dual-channel, continuously variable, voltage-controlled gain amplifier well-suited for a variety of ultrasound systems as well as applications in proximity detectors and test equipment. The VCA2617 uses a true variable-gain amplifier architecture, achieving very good noise performance at low gains, while not sacrificing high gain distortion performance.

Following a linear-in-dB response, the VCA2617 gain can be varied over a 48dB range with a 0.2V to 2.3V control voltage. Two separate high-impedance control inputs allow for a channel independent variation of the gains. Each channel of the VCA2617 can be configured to provide a gain range of -10dB to 38dB, or -16dB to 32dB, depending on the gain select pin (HG)\. This post-gain feature allows the user to optimize the output swing of VCA2617 for a variety of high-speed analog-to-digital converters (ADC). As a means to improve system overload recovery time, the VCA2617 also provides an internal clamping circuitry where an externally applied voltage sets the desired output clamping level.

The VCA2617 operates on a single +5V supply while consuming only 52mW per channel. It is available in a small QFN-32 package (5x5mm).