IC OPAMP VGA DIFF 100MHZ 32TQFP

VCA2614Y/250

Manufacturer Part NumberVCA2614Y/250
DescriptionIC OPAMP VGA DIFF 100MHZ 32TQFP
ManufacturerTexas Instruments
VCA2614Y/250 datasheet
 


Specifications of VCA2614Y/250

Amplifier TypeVariable GainNumber Of Circuits2
Output TypeDifferentialSlew Rate300 V/µs
Gain Bandwidth Product100MHz-3db Bandwidth40MHz
Current - Input Bias1nACurrent - Output / Channel40mA
Voltage - Supply, Single/dual (±)4.75 V ~ 5.25 VOperating Temperature-40°C ~ 85°C
Mounting TypeSurface MountPackage / Case32-TQFP, 32-VQFP
For Use WithVCA2619EVM - VCA2619EVMVCA2614EVM - VCA2614EVMLead Free Status / RoHS StatusContains lead / RoHS non-compliant
Current - Supply-Voltage - Input Offset-
Other namesVCA2614Y/250TR  
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Dual, VARIABLE GAIN AMPLIFIER
FEATURES
GAIN RANGE: 40dB
40MHz BANDWIDTH
LOW CROSSTALK: 70dB at Max Gain, 5MHz
HIGH-SPEED VARIABLE GAIN ADJUST
POWER SHUTDOWN MODE
HIGH IMPEDANCE INPUT BUFFER
APPLICATIONS
ULTRASOUND SYSTEMS
GAMMA CAMERAS
WIRELESS RECEIVERS
TEST EQUIPMENT
VCA2614
(1 of 2 Channels)
Voltage
Buffer
IN
Control
A
Attenuator
Analog
VCA
CNTL
Control
Voltage
IN
Buffer
Control
B
Attenuator
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. Production processing does not necessarily include
testing of all parameters.
with 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 Volt-
age 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 program-
mable 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 Converters (ADCs). A sepa-
rate power-down pin reduces power consumption.
The VCA2614 also features low crosstalk and outstanding
distortion performance. The combination of low noise and gain
range programmability makes the VCA2614 a versatile build-
ing block in a number of applications where noise perfor-
mance is critical. The VCA2614 is available in a TQFP-32
package.
C
C
P2A
P1A
Programmable
Gain Amplifier
Maximum Gain
Select
Programmable
Gain Amplifier
C
C
P2B
P1B
www.ti.com
VCA2614
SBOS185D – JANUARY 2001 – REVISED MARCH 2003
N
OUTA
P
OUTA
MGS
1
Maximum
MGS
2
Gain Select
MGS
3
N
OUTB
P
OUTB
Copyright © 2001-2003, Texas Instruments Incorporated

VCA2614Y/250 Summary of contents

  • Page 1

    ... Attenuator 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 ...

  • Page 2

    ... OUT 1MHz < f < 10MHz, Full Gain Range 40dB Gain Change, MGS = 111 Operating, Each Channel www.ti.com ORDERING TRANSPORT NUMBER MEDIA, QUANTITY VCA2614Y/250 Tape and Reel, 250 " VCA2614Y/2K Tape and Reel, 2000 = 5MHz, unless otherwise noted. IN VCA2614Y MIN TYP ...

  • Page 3

    PIN CONFIGURATION Top View + DDR V BIAS V CM GND R NC +IN B PIN DESCRIPTIONS PIN DESIGNATOR DESCRIPTION 1 +IN Input Channel Internal Connection 3 V Internal Reference Supply DDR ...

  • Page 4

    TYPICAL CHARACTERISTICS + 5V, load resistance = 500 A DD GAIN vs VCA CNTL 50 45 MGS = 110 40 MGS = 101 MGS = 011 5 MGS ...

  • Page 5

    TYPICAL CHARACTERISTICS + 5V, load resistance = 500 A DD GAIN vs FREQUENCY (VCA = 3.0V) CNTL MGS = 011 100k 1M Frequency ...

  • Page 6

    TYPICAL CHARACTERISTICS + 5V, load resistance = 500 A DD NOISE FIGURE vs VCA 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 ...

  • Page 7

    TYPICAL CHARACTERISTICS + 5V, load resistance = 500 A DD HARMONIC DISTORTION vs FREQUENCY (Single-Ended, 1Vp-p, MGS = 111) –30 –35 –40 –45 –50 –55 –60 –65 –70 –75 –80 –85 –90 100k 1M ...

  • Page 8

    TYPICAL CHARACTERISTICS + 5V, load resistance = 500 A DD OVERLOAD DISTORTION vs FREQUENCY 0 –10 –20 –30 –40 –50 –60 1 Frequency (Hz) 8 (Cont.) on each output to ground, differential output (2Vp-p) ...

  • Page 9

    OVERVIEW The VCA2614 is a dual-channel, VGA consisting of three primary blocks: an Input Buffer, a VCA, and a PGA (as shown in Figure 1). All stages are AC-coupled with the coupling into the PGA stage being made variable by ...

  • Page 10

    Attenuator Input Control Input 0dB –4.4dB V – Characteristic of Attenuator Control Stage Output OVERALL CONTROL ...

  • Page 11

    PGA POST-AMPLIFIER Figure 5 shows a simplified circuit diagram of the PGA block. As stated before, the input to the PGA is AC-coupled by an internal capacitor. Provisions are made so that an external capacitor can be placed in parallel ...

  • Page 12

    FIGURE 6. VCA2614 Layout. 12 +5V 0 +5V 0 0. DDA DDR ...

  • Page 13

    PACKAGE DRAWING PBS (S-PQFP-G32) 0, 3,50 TYP 5,05 4,95 7,10 6,90 1,05 0,95 1,20 MAX NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. VCA2614 SBOS185D 0,23 0,08 ...

  • Page 14

    ... PACKAGING INFORMATION (1) Orderable Device Status VCA2614Y/250 ACTIVE VCA2614Y/2K ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design ...

  • Page 15

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing VCA2614Y/250 TQFP PBS VCA2614Y/2K TQFP PBS PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 32 250 177.8 16.4 7.2 32 2000 330.0 16.8 7.2 Pack Materials-Page 1 ...

  • Page 16

    ... Device Package Type VCA2614Y/250 TQFP VCA2614Y/2K TQFP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) PBS 32 250 PBS 32 2000 Pack Materials-Page 2 20-Sep-2008 Width (mm) Height (mm) 190.5 212.7 31.8 346.0 346.0 33.0 ...

  • Page 17

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  • Page 18

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...