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Programmable & variable gain amplifiers (PGAs & VGAs)

Gains up to 1000 V/V and bandwidths to 4.5 GHz - get the right gain at the right time

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We offer a wide range of variable and programmable gain amplifiers capable of improving the dynamic range of a circuit with the ability to adjust the amplitude of the signal in real time. Our portfolio offers industry-leading zero drift, high-precision solutions with wide range of frequency from DC to 4.5 Ghz and wide-gain ranges up to 1000 V/V.

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Variable gain amplifiers (VGAs)

Wide bandwidth amplifiers with precision analog and digital gain control up to 4.5 GHz.

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Programmable gain amplifiers (PGAs)

Digitally programmable precision amplifiers with binary and scope gain ranges up to 1,000 V/V.

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Technical resources

Application note
Application note
Achieve High SNR with the PGA855, Fully Differential Programmable-Gain Amplifier
This application note shows the AC performance of the PGA855 driving the ADS127L11 and ADS127L21 delta-sigma ADCs. The focus of this document is on intrinsic noise, signal-to-noise ratio (SNR) and effective resolution performance.
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Application note
Application note
Interfacing the VCA8617 with High-Speed ADCs
This application report covers different methods of interfacing the VCA8617 with various ADCs.
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Design guide
Design guide
Cascaded LMH5401 and LMH6401 Design Guide
A wideband single-ended to differential conversion reference design in both DC- and AC-coupled applications is presented. The design evaluates the performance of the LMH5401 and LMH6401 cascade and offers insight into the design.
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Design & development resources

Simulation tool
PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool
SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Reference design
Precision signal chain for digital multimeters reference design

This reference design explains the theory, design and testing of a high-performance signal chain for DC measurements. The main target application is digital multimeters (DMMs), however the design can also be applicable to other applications, such as data acquisition (DAQ) and condition monitoring. (...)