Part Datasheet Search > Amplifiers,Buffers > TI > VCA810AID Datasheet PDF > VCA810AID Other Datasheet PDF Pages 1/25
VCA810AID Other Datasheet PDF - TI
| Manufacturer: | TI |
| Category: | Amplifiers,Buffers |
| Case Package: | SOIC-8 |
| Description: | TEXAS INSTRUMENTS VCA810AID Programmable/Variable Amplifier, Voltage Controlled, 1Channels, 1 Amplifier, 35MHz, -40℃, 85℃ |
| Pictures: |
VCA810AIDDatasheet PDF
Page:
of 25 Go
If the format of the manual is confusing, please download and read the original PDF file.
FEATURES
D HIGH GAIN ADJUST RANGE: 40dB
D DIFFERENTIAL IN/SINGLE-ENDED OUT
D LOW INPUT NOISE VOLTAGE: 2.4nV/Hz
D CONSTANT BANDWIDTH vs GAIN: 35MHz
D HIGH dB/V GAIN LINEARITY: 0.3dB
D GAIN CONTROL BANDWIDTH: 25MHz
D LOW OUTPUT DC ERROR: < 40mV
D HIGH OUTPUT CURRENT: 60mA
D LOW SUPPLY CURRENT: 24.8mA (max for
−40C to +85C temperature range)
APPLICATIONS
D OPTICAL RECEIVER TIME GAIN CONTROL
D SONAR SYSTEMS
D VOLTAGE-TUNABLE ACTIVE FILTERS
D LOG AMPLIFIER
D PULSE AMPLITUDE COMPENSATION
D AGC RECEIVER WITH RSSI
D IMPROVED REPLACEMENT FOR THE
VCA610
+5V
−
5V
V
OUT
V
C
0
→−
2V
−
40dB
→
+40dB Gain
VCA810
X1
2
3
V+
V
−
1
6
7
5
8
Gain
Adjust
+
DESCRIPTION
The VCA810 is a DC-coupled, wideband, continuously
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.
Operating from ±5V supplies, the gain control voltage for the
VCA810 will adjust the gain from –40dB at 0V input to +40dB
at –2V input. Increasing the control voltage above ground will
attenuate the signal path to > 80dB. Signal bandwidth and
slew rate remain constant over the entire gain adjust range.
This 40dB/V gain control is accurate within ±1.5dB (±0.9dB
for High Grade), allowing the gain control voltage in an AGC
application to be used as a Received Signal Strength
Indicator (RSSI) with ±1.5dB accuracy.
Excellent common-mode rejection and common-mode input
range at the two high-impedance inputs allow the VCA810 to
provide a differential receiver operation with gain adjust. The
output signal is referenced to ground. Zero differential input
voltage gives a 0V output with a small DC offset error. Low
input noise voltage ensures good output SNR at the highest
gain settings.
In applications where pulse edge information is critical, and
the VCA810 is being used to equalize varying channel loss,
minimal change in group delay over gain setting will retain
excellent pulse edge 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 2nd-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
SINGLES DUALS
GAIN ADJUST
RANGE (dB)
INPUT
NOISE
(nV/Hz)
SIGNAL
BANDWIDTH
(MHz)
VCA811 — 80 2.4 80
— VCA2612 45 1.25 80
— VCA2613 45 1 80
— VCA2614 45 3.6 40
— VCA2616 45 3.3 40
— VCA2618 45 5.5 30
All trademarks are the property of their respective owners.
VCA810
SBOS275C − JUNE 2003 − REVISED OCTOBER 2004
High Gain Adjust Range, Wideband,
Voltage-Controlled Amplifier
www.ti.com
Copyright 2003−2004, Texas Instruments Incorporated
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.
! !
Part Datasheet PDF Search
72,405,303 Parts Datasheet PDF, Update more than 5,000 PDF files ervery day.