VCA2617
VCA2617 is Variable Gain Amplifier manufactured by Burr-Brown.
- Part of the VCA2617_Burr comparator family.
- Part of the VCA2617_Burr comparator family.
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SBOS326
- AUGUST 2005
Dual, Variable Gain Amplifier
Features
D INDEPENDENT CHANNEL CONTROLS:
- Gain Range: 48d B
- Clamping Levels
- Post-Gain: 0, +6d B
DESCRIPTION
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-d B response, the VCA2617 gain can be varied over a 48d B 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
- 10d B to 38d B, or
- 16d B to 32d B, 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 52m W per channel. It is available in a small QFN-32 package (5x5mm).
D D D D D D D D
LOW NOISE: 4.1n V//Hz LOW POWER: 52m W/Channel BANDWIDTH: 50MHz HARMONIC DISTORTION:
- 53d Bc at 5MHz CROSSTALK:
- 61d B at 5MHz 5V SINGLE SUPPLY POWER-DOWN MODE SMALL QFN-32 PACKAGE (5x5mm)
APPLICATIONS
D MEDICAL AND INDUSTRIAL ULTRASOUND D D
SYSTEMS
- Suitable for 10-Bit and 12-Bit Systems TEST EQUIPMENT SONAR
RELATED PRODUCTS
PART NUMBER VCA2615 DESCRIPTION Dual, Low-Noise, Variable-Gain Amplifier with Preamp
V CNTLA
V CLMPA
Gain Select A
C EXTA
In A+ V- I In A- Clamping Circuitry I- V
Out A+
Out...