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Details, datasheet, quote on part number:VCA2619YT
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Datasheet text preview:
VCA2619
SBOS276A - AUGUST 2003 - REVISED AUGUST 2003
Dual, Variable Gain Amplifier with Input Buffer
FEATURES D GAIN RANGE: 50dB D LOW CROSSTALK: -60dB at Max Gain,
fIN = 5MHz
DESCRIPTION
The VCA2619 is a highly integrated, dual receive channel, Variable Gain Amplifier (VGA) with analog gain control. The VCA2619s 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 combination of these two programmable elements results in a variable gain ranging from 0dB 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 (A/D) converters. A separate power-down pin reduces power consumption. The VCA2619 also features low crosstalk and outstanding distortion performance. The combination of low noise and gain range programmability make the VCA2619 a versatile building block in a number of applications where noise performance is critical. The VCA2619 is available in a TQFP-32 package.
D HIGH-SPEED VARIABLE GAIN ADJUST D POWER SHUTDOWN MODE D HIGH IMPEDANCE INPUT BUFFER APPLICATIONS D D D D
ULTRASOUND SYSTEMS WIRELESS RECEIVERS TEST EQUIPMENT RADAR
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. All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 2003, Texas Instruments Incorporated
www.ti.com
VCA2619
www.ti.com SBOS276A - AUGUST 2003 - REVISED AUGUST 2003
ABSOLUTE MAXIMUM RATINGS(1)
Power Supply (+VS) Analog Input Logic Input Case Temperature Junction Temperature +6V -0.3V to (+VS + 0.3V) -0.3V to (+VS + 0.3V) +100°C +150°C
This integrated circuit can be damaged by ESD. Te x a s Instruments recommends that all integrated circuits be handled with appropriate p r e c a u t i o n s . Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may b e more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
Storage Temperature -40°C to +150°C (1) Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. Exposure to absolute maximum conditions for extended periods may affect device reliability.
PACKAGE/ORDERING INFORMATION
PRODUCT PACKAGE-LEAD PACKAGE DESIGNATOR(1) PBS SPECIFIED TEMPERATURE RANGE -40°C to +85°C PACKAGE MARKING VCA2619Y ORDERING NUMBER VCA2619YT VCA2619YR TRANSPORT MEDIA, QUANTITY Tape and Reel, 250 Tape and Reel, 2000
VCA2619Y
TQFP-32
(1) For the most current specification and package information, refer to our web site at www.ti.com.
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VCA2619
www.ti.com SBOS276A - AUGUST 2003 - REVISED AUGUST 2003
ELECTRICAL CHARACTERISTICS
At TA = +25°C, VDD = 5V, load resistance = 500 on each output to ground single-ended output (1Vpp), MGS = 111, VCACNTL = 2.9V and fIN = 5MHz, unless otherwise noted.
VCA2619 PARAMETER BUFFER Input Resistance Input Capacitance Input Bias Current Maximum Input Voltage Input Voltage Noise Input Current Noise Noise Figure Bandwidth PROGRAMMABLE VARIABLE GAIN AMPLIFIER Peak Input Voltage -3dB Bandwidth Slew Rate Output Signal Range Output Impedance Output Short-Circuit Current 3rd-Harmonic Distortion 2nd-Harmonic Distortion 2nd-Harmonic Distortion Overload Performance (2nd-Harmonic Distortion) Time Delay IMD, 2-Tone Crosstalk ACCURACY Gain Slope Gain Error(1) Output Offset Voltage Gain Range GAIN CONTROL INTERFACE Input Voltage (VCACNTL) Range Input Resistance Response Time POWER SUPPLY Specified Operating Range Power Dissipation Power-Down 4.75 5.0 240 9.2 5.25 300 V mW mW 45dB Gain Change 0 to 3.0 1 0.2 V M µs VCACNTL = 0.4V to 2.9V VCACNTL = 0.2V to 3.0V VCACNTL = 0.4V to 2.9V VCACNTL = 0.2V to 3.0V VCACNTL = 0.4V to 2.9V 20 ±2.75 ±1.50 ±50 52 50 dB/V dB dB mV dB dB VOUT = 2Vpp, f = 9.95MHz 2Vpp Differential VOUT = 1Vpp, VCACNTL = 2.9V VOUT = 1Vpp, VCACNTL = 2.9V Differential, VOUT = 2Vpp, VCACNTL = 3.0V, MGS = 011 Input Signal = 0.5Vpp, VCACNTL = 2V -45 -42 RL 500 Each Side to Ground 1 20 300 2.5 ±1 1 ±40 -60 -50 -50 -40 to -45 5 -59 -60 Vpp MHz V/µs V mA dBc dBc dBc dB ns dBc dB PGA Gain = 45dB, RS = 50 Independent of Gain RF = 550, PGA Gain = 45dB, RS = 75 CONDITIONS MIN TYP MAX UNIT k pF nA Vpp nV/Hz fA/Hz dB MHz
600
5 1 1 5.9 350 13 100
±2.0
48
(1) Referenced to best fit dB-linear curve.
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