Product details

2nd harmonic (dBc) 78 3rd harmonic (dBc) 75 Frequency of harmonic distortion measurement (MHz) 200 Acl, min spec gain (V/V) 0.5 Architecture Fully Differential ADC Driver, VGA BW at Acl (MHz) 1400 Gain (max) (dB) 25.74 Gain (min) (dB) -4.3 Step size (dB) 0.2 Type RF VGA Iq per channel (typ) (mA) 116 Number of channels 4 Rating Catalog Operating temperature range (°C) -40 to 85 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.75 Vs (min) (V) 4.75 Vs (max) (V) 5.25
2nd harmonic (dBc) 78 3rd harmonic (dBc) 75 Frequency of harmonic distortion measurement (MHz) 200 Acl, min spec gain (V/V) 0.5 Architecture Fully Differential ADC Driver, VGA BW at Acl (MHz) 1400 Gain (max) (dB) 25.74 Gain (min) (dB) -4.3 Step size (dB) 0.2 Type RF VGA Iq per channel (typ) (mA) 116 Number of channels 4 Rating Catalog Operating temperature range (°C) -40 to 85 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.75 Vs (min) (V) 4.75 Vs (max) (V) 5.25
WQFN (NJY) 54 55 mm² 10 x 5.5
  • OIP3: 49dBm at 200MHz
  • Noise Figure: 8.5dB
  • Voltage Gain: 26dB
  • 1dB Gain Steps
  • Enable pins active in SPI mode
  • −3dB bandwidth of 1400 MHz
  • Gain Step Accuracy: 0.2 dB
  • Disable function for each channel
  • Parallel and Serial gain control
  • Low Power Mode for power management flexibility
  • Small footprint LLP package
  • OIP3: 49dBm at 200MHz
  • Noise Figure: 8.5dB
  • Voltage Gain: 26dB
  • 1dB Gain Steps
  • Enable pins active in SPI mode
  • −3dB bandwidth of 1400 MHz
  • Gain Step Accuracy: 0.2 dB
  • Disable function for each channel
  • Parallel and Serial gain control
  • Low Power Mode for power management flexibility
  • Small footprint LLP package

The LMH6523 contains four, high performance, digitally controlled variable gain amplifiers (DVGA). It has been designed for use in narrowband and broadband IF sampling applications. Typically, the LMH6523 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range.

Each channel of LMH6523 has an independent, digitally controlled attenuator and a high linearity, differential output, amplifier. All circuitry has been optimized for low distortion and maximum system design flexibility. Power consumption is managed by a three-state enable pin. Individual channels can be disabled or placed into a Low Power Mode or a higher performance, High Power Mode. The enable pin is active in both serial and parallel modes for systems that require high speed power control.

The LMH6523 digitally controlled attenuator provides precise 1dB gain steps over a 31dB range. The digital attenuator can be controlled by either a SPI Serial bus or a high speed parallel bus.

The output amplifier has a differential output, allowing large signal swings on a single 5V supply. The low impedance output provides maximum flexibility when driving a wide range filter designs or analog to digital converters. For applications which have very large changes in signal level LMH6523 can support up to 62dB of gain range by cascading channels.

The LMH6523 operates over the industrial temperature range of −40°C to 85°C. The LMH6523 is available in a 54-Pin, thermally enhanced, LLP package.

The LMH6523 contains four, high performance, digitally controlled variable gain amplifiers (DVGA). It has been designed for use in narrowband and broadband IF sampling applications. Typically, the LMH6523 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range.

Each channel of LMH6523 has an independent, digitally controlled attenuator and a high linearity, differential output, amplifier. All circuitry has been optimized for low distortion and maximum system design flexibility. Power consumption is managed by a three-state enable pin. Individual channels can be disabled or placed into a Low Power Mode or a higher performance, High Power Mode. The enable pin is active in both serial and parallel modes for systems that require high speed power control.

The LMH6523 digitally controlled attenuator provides precise 1dB gain steps over a 31dB range. The digital attenuator can be controlled by either a SPI Serial bus or a high speed parallel bus.

The output amplifier has a differential output, allowing large signal swings on a single 5V supply. The low impedance output provides maximum flexibility when driving a wide range filter designs or analog to digital converters. For applications which have very large changes in signal level LMH6523 can support up to 62dB of gain range by cascading channels.

The LMH6523 operates over the industrial temperature range of −40°C to 85°C. The LMH6523 is available in a 54-Pin, thermally enhanced, LLP package.

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Technical documentation

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* Data sheet LMH6523 High Performance Quad DVGA datasheet 24 Oct 2012
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017

Design & development

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Evaluation board

LMH6522EVAL — LMH6522EVAL Evaluation Module

The LMH6522EVAL evaluation board is designed to facilitate the test and measurement of the LMH6522 quad, digitally controlled, variable gain amplifier (DVGA). This board is configured with 50 Ohm, single ended signal paths for use with standard lab equipment. The LMH6522EVAL board offers switch (...)
User guide: PDF
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Simulation model

LMH6523 PSpice Model

SNOM714.ZIP (192 KB) - PSpice Model
Simulation model

LMH6523 TINA-TI Reference Design

SNOM337.TSC (2539 KB) - TINA-TI Reference Design
Simulation model

LMH6523 TINA-TI Spice Model

SNOM338.ZIP (11 KB) - TINA-TI Spice Model
Package Pins CAD symbols, footprints & 3D models
WQFN (NJY) 54 Ultra Librarian

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