Product details

Features Analog Gain Set, Differential to Single-ended conversion PGA/VGA VGA Number of channels 1 Vs (max) (V) 12 Vs (min) (V) 8 BW at Acl (MHz) 710 Acl, min spec gain (V/V) 2 Slew rate (typ) (V/µs) 2500 Iq per channel (typ) (mA) 36.5 Gain (max) (dB) 40 Rating Catalog Operating temperature range (°C) -40 to 85
Features Analog Gain Set, Differential to Single-ended conversion PGA/VGA VGA Number of channels 1 Vs (max) (V) 12 Vs (min) (V) 8 BW at Acl (MHz) 710 Acl, min spec gain (V/V) 2 Slew rate (typ) (V/µs) 2500 Iq per channel (typ) (mA) 36.5 Gain (max) (dB) 40 Rating Catalog Operating temperature range (°C) -40 to 85
SOIC (D) 14 51.9 mm² 8.65 x 6 VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • 710-MHz Small-Signal Bandwidth (G = 2 V/V)
  • 320 MHz, 4-VPP Bandwidth (G = 10 V/V)
  • 0.1-dB Gain Flatness to 135 MHz
  • 2500-V/µs Slew Rate
  • > 40-dB Gain Adjust Range
  • High Gain Accuracy: 20-dB ±0.3-dB
  • High Output Current: ±90 mA
  • 710-MHz Small-Signal Bandwidth (G = 2 V/V)
  • 320 MHz, 4-VPP Bandwidth (G = 10 V/V)
  • 0.1-dB Gain Flatness to 135 MHz
  • 2500-V/µs Slew Rate
  • > 40-dB Gain Adjust Range
  • High Gain Accuracy: 20-dB ±0.3-dB
  • High Output Current: ±90 mA

The VCA824 is a DC-coupled, wideband, linear-in V/V, continuously variable, voltage-controlled gain amplifier. The device provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40 dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).

The VCA824 internal architecture consists of two input buffers and an output current feedback amplifier stage integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between 2 V/V and 40 V/V. Operating from ±5-V supplies, the gain control voltage for the VCA824 adjusts the gain linearly in V/V as the control voltage varies from 1 V to –1 V. For example, set for a maximum gain of 10 V/V, the VCA824 provides 10 V/V, at 1-V input, to 0.1 V/V at –1-V input of gain control range. The VCA824 offers excellent gain linearity. For a 20-dB maximum gain, and a gain-control input voltage varying between 0 V and 1 V, the gain does not deviate by more than ±0.3-dB (maximum at 25°C).

The VCA824 is a DC-coupled, wideband, linear-in V/V, continuously variable, voltage-controlled gain amplifier. The device provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40 dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).

The VCA824 internal architecture consists of two input buffers and an output current feedback amplifier stage integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between 2 V/V and 40 V/V. Operating from ±5-V supplies, the gain control voltage for the VCA824 adjusts the gain linearly in V/V as the control voltage varies from 1 V to –1 V. For example, set for a maximum gain of 10 V/V, the VCA824 provides 10 V/V, at 1-V input, to 0.1 V/V at –1-V input of gain control range. The VCA824 offers excellent gain linearity. For a 20-dB maximum gain, and a gain-control input voltage varying between 0 V and 1 V, the gain does not deviate by more than ±0.3-dB (maximum at 25°C).

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
LMH6882 ACTIVE 2.4 GHz Dual Programmable Differential Amplifier with Gain Control Dual channel , wider bandwidth and faster slew rate

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 7
Type Title Date
* Data sheet VCA824 Ultra-Wideband, > 40-dB Gain Adjust Range, Linear in V/V Variable Gain Amplifier datasheet (Rev. E) PDF | HTML 22 Jul 2019
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Analog Design Journal Analog Applications Journal 2Q 2015 28 Apr 2015
Analog Design Journal Tips and tricks for high-speed, high-voltage measurement 28 Apr 2015
Application note Implementating a Variable-Length Cat5e Cable Equalizer 25 Apr 2010
Application note Wireline Data Transmission and Reception 27 Jan 2010
User guide Voltage-Controlled Amplifier Evaluation Kit 25 Aug 2008

Design & development

Please view the Design & development section on a desktop.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos