VCA2614 Datasheet | Burr-Brown

FEATURES q q q q q q GAIN RANGE: 40d B 40MHz BANDWIDTH LOW CROSSTALK: 70d B at Max Gain, 5MHz HIGH-SPEED VARIABLE GAIN ADJUST POWER SHUTDOWN MODE HIGH IMPEDANCE INPUT BUFFER DESCRIPTION The VCA2614 is a highly integrated, dual receive channel, Variable Gain Amplifier (VGA) with analog gain control. The VCA2614’s VGA section consists of two parts: the Voltage Controlled Attenuator (VCA) and the Programmable Gain Amplifier (PGA). The gain and gain range of the PGA can be digitally programmed. The bination of these two programmable elements results in a variable gain ranging from 0d B up to a maximum gain as defined by the user through external connections. The single-ended unity gain input buffer provides predictable high input impedance. The output of the VGA can be used in either a single-ended or differential mode to drive high-performance Analog-to-Digital Converters (ADCs). A separate power-down pin reduces power consumption. The VCA2614 also features low crosstalk and outstanding distortion performance. The bination of low noise and gain range programmability makes the VCA2614 a versatile building block in a number of applications where noise performance is critical. The VCA2614 is available in a TQFP-32 package. APPLICATIONS q q q q ULTRASOUND SYSTEMS GAMMA CAMERAS WIRELESS RECEIVERS TEST EQUIPMENT CP2A CP1A VCA2614 (1 of 2 Channels) NOUTA Voltage Control Attenuator Programmable Gain Amplifier Buffer POUTA MGS1 VCACNTL Analog Control Maximum Gain Select MGS2 MGS3 Maximum Gain Select NOUTB Voltage Control Attenuator Programmable Gain Amplifier Buffer POUTB CP2B CP1B Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty....