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VCA810IDR Datasheet - TI
| Manufacturer: | TI |
| Category: | Amplifiers,Buffers |
| Case Package: | SOIC-8 |
| Description: | IC VOLT CONTROLLED AMP 35MHz 4.7dB SOIC8 |
| Pictures: |
VCA810IDRDatasheet PDF
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+5V
-5V
V
OUT
V
C
0 2V® -
- ®40dB +40dB Gain
VCA810
X1
2
3
V+
V-
1
6
7
5
8
Gain
Adjust
+
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VCA810
SBOS275G –JUNE 2003–REVISED DECEMBER 2015
VCA810 High Gain Adjust Range, Wideband and Variable Gain Amplifier
Operating from ±5-V supplies, the device gain control
1 Features
voltage adjusts the gain from –40 dB at a 0-V input to
1
• High Gain Adjust Range: ±40 dB
40 dB at a –2-V input. Increasing the control voltage
• Differential In, Single-Ended Out
above ground attenuates the signal path to greater
than 80 dB. Signal bandwidth and slew rate remain
• Low Input Noise Voltage: 2.4 nV/√Hz
constant over the entire gain adjust range. This 40-
• Constant Bandwidth vs Gain: 35 MHz
dB/V gain control is accurate within ± 1.5 dB (±0.9 dB
• High dB/V Gain Linearity: ±0.3 dB
for high grade), allowing the gain control voltage in an
AGC application to be used as a received signal
• Gain Control Bandwidth: 25 MHz
strength indicator (RSSI) with ±1.5-dB accuracy.
• Low Output DC Error: < ±40 mV
Excellent common-mode rejection and common-
• High Output Current: ±60 mA
mode input range at the two high-impedance inputs
• Low Supply Current: 24.8 mA
allow the device to provide a differential receiver
(Maximum for –40°C to 85°C Temperature Range)
operation with gain adjust. The output signal is
referenced to ground. Zero differential input voltage
2 Applications
gives a 0-V output with a small DC offset error. Low
input noise voltage ensures good output SNR at the
• Optical Receiver Time Gain Control
highest gain settings.
• Sonar Systems
In applications where pulse edge information is
• Voltage-Tunable Active Filters
critical, and the device is being used to equalize
• Log Amplifiers
varying channel loss, minimal change in group delay
• Pulse Amplitude Compensation
over gain setting retains excellent pulse edge
information.
• AGC receivers With RSSI
• Improved Replacement for VCA610
An improved output stage provides adequate output
current to drive the most demanding loads. Although
3 Description
principally intended to drive analog-to-digital
converters (ADCs) or second-stage amplifiers, the
The VCA810 is a DC-coupled, wideband,
±60-mA output current easily drives doubly-
continuously variable, voltage-controlled gain
terminated 50-Ω lines or a passive post-filter stage
amplifier. The device provides a differential input to
over the ±1.7-V output voltage range.
single-ended output conversion with a high-
impedance gain control input used to vary the gain
Device Information
over a –40-dB to 40-dB range linear in dB/V.
PART NUMBER PACKAGE BODY SIZE (NOM)
VCA810 SOIC (8) 4.90 mm × 3.91 mm
Functional Block Diagram
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.