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VCA810AIDRG4 Datasheet - TI
| Manufacturer: | TI |
| Category: | Operational Amplifiers(General Purpose) |
| Case Package: | SOIC |
| Description: | OP-AMP, 300uV OFFSET-MAX, 35MHz BAND WIDTH, PDSO8, GREEN, PLASTIC, SOIC-8 |
| Pictures: |
VCA810AIDRG4Datasheet PDF
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VCA810
+5V
-5V
V
OUT
V
C
0 2V® -
- ®40dB +40dB Gain
VCA810
X1
2
3
V+
V-
1
6
7
5
8
Gain
Adjust
+
VCA810
www.ti.com
SBOS275F –JUNE 2003–REVISED DECEMBER 2010
High Gain Adjust Range, Wideband,
VARIABLE GAIN AMPLIFIER
Check for Samples: VCA810
Operating from ±5V supplies, the gain control voltage
1
FEATURES
for the VCA810 will adjust the gain from –40dB at 0V
2
• HIGH GAIN ADJUST RANGE: ±40dB
input to +40dB at –2V input. Increasing the control
• DIFFERENTIAL IN/SINGLE-ENDED OUT
voltage above ground will attenuate the signal path to
greater than 80dB. Signal bandwidth and slew rate
• LOW INPUT NOISE VOLTAGE: 2.4nV/√Hz
remain constant over the entire gain adjust range.
• CONSTANT BANDWIDTH vs GAIN: 35MHz
This 40dB/V gain control is accurate within ±1.5dB
• HIGH dB/V GAIN LINEARITY: ±0.3dB
(±0.9dB for high grade), allowing the gain control
• GAIN CONTROL BANDWIDTH: 25MHz
voltage in an AGC application to be used as a
Received Signal Strength Indicator (RSSI) with
• LOW OUTPUT DC ERROR: < ±40mV
±1.5dB accuracy.
• HIGH OUTPUT CURRENT: ±60mA
Excellent common-mode rejection and
• LOW SUPPLY CURRENT: 24.8mA
common-mode input range at the two
(max for −40°C to +85°C temperature range)
high-impedance inputs allow the VCA810 to provide a
differential receiver operation with gain adjust. The
APPLICATIONS
output signal is referenced to ground. Zero differential
• OPTICAL RECEIVER TIME GAIN CONTROL
input voltage gives a 0V output with a small dc offset
error. Low input noise voltage ensures good output
• SONAR SYSTEMS
SNR at the highest gain settings.
• VOLTAGE-TUNABLE ACTIVE FILTERS
• LOG AMPLIFIERS
In applications where pulse edge information is
critical, and the VCA810 is being used to equalize
• PULSE AMPLITUDE COMPENSATION
varying channel loss, minimal change in group delay
• AGC RECEIVERS WITH RSSI
over gain setting will retain excellent pulse edge
• IMPROVED REPLACEMENT FOR VCA610
information.
An improved output stage provides adequate output
current to drive the most demanding loads. While
principally intended to drive analog-to-digital
converters (ADCs) or second-stage amplifiers, the
±60mA output current will easily drive
doubly-terminated 50Ω lines or a passive post-filter
stage over the ±1.7V output voltage range.
VCA810 RELATED PRODUCTS
GAIN
ADJUST INPUT SIGNAL
RANGE NOISE BANDWIDTH
SINGLES DUALS (dB) (nV/√Hz) (MHz)
VCA811 — 80 2.4 80
— VCA2612 45 1.25 80
— VCA2613 45 1 80
— VCA2614 45 3.6 40
DESCRIPTION
— VCA2616 45 3.3 40
The VCA810 is a dc-coupled, wideband, continuously
VCA2618 45 5.5 30
variable, voltage-controlled gain amplifier. It provides
a differential input to single-ended output conversion
with a high-impedance gain control input used to vary
the gain over a –40dB to +40dB range linear in dB/V.
1
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.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2003–2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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