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LMH6521
  • LMH6521
  • LMH6521
  • LMH6521
  • LMH6521

LMH6521

ACTIVE

High Performance Dual DVGA

Texas Instruments LMH6521 Product Info

1 April 2026 5

Parameters

2nd harmonic (dBc)

-84

3rd harmonic (dBc)

83

Frequency of harmonic distortion measurement (MHz)

200

Acl, min spec gain (V/V)

0.53

Architecture

Fully Differential ADC Driver, VGA

BW at Acl (MHz)

1400

Gain (max) (dB)

26

Gain (min) (dB)

-5.5

Step size (dB)

0.5

Type

RF VGA

Iq per channel (typ) (mA)

113

Number of channels

2

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

Package

WQFN (RTV)-32-25 mm² 5 x 5

Features

  • OIP3 of 48.5 dBm at 200 MHz
  • Maximum Voltage Gain of 26 dB
  • Gain Range: 31.5 dB with 0.5-dB Step Size
  • Channel Gain Matching of ±0.04 dB
  • Noise Figure: 7.3 dB at Maximum Gain
  • –3-dB Bandwidth of 1200 MHz
  • Low Power Dissipation
  • Independent Channel Power Down
  • Three Gain Control Modes:
    • Parallel Interface
    • Serial Interface (SPI)
    • Pulse Mode Interface
  • Temperature Range: –40°C to +85°C
  • Thermally-Enhanced, 32-Pin WQFN Package
  • OIP3 of 48.5 dBm at 200 MHz
  • Maximum Voltage Gain of 26 dB
  • Gain Range: 31.5 dB with 0.5-dB Step Size
  • Channel Gain Matching of ±0.04 dB
  • Noise Figure: 7.3 dB at Maximum Gain
  • –3-dB Bandwidth of 1200 MHz
  • Low Power Dissipation
  • Independent Channel Power Down
  • Three Gain Control Modes:
    • Parallel Interface
    • Serial Interface (SPI)
    • Pulse Mode Interface
  • Temperature Range: –40°C to +85°C
  • Thermally-Enhanced, 32-Pin WQFN Package

Description

The LMH6521 contains two high performance, digitally controlled variable gain amplifiers (DVGA).

Both channels of the LMH6521 have an independent, digitally controlled attenuator followed by a high linearity, differential output amplifier. Each block has been optimized for low distortion and maximum system design flexibility. Each channel has a high speed power down mode.

The internal digitally controlled attenuator provides precise 0.5-dB gain steps over a 31.5-dB range. Serial and parallel programming options are provided. Serial mode programming uses the SPI interface. A pulse mode is also offered where simple up or down commands can change the gain one step at a time.

The output amplifier has a differential output allowing 10-VPPD signal swings on a single 5-V supply. The low impedance output provides maximum flexibility when driving filters or analog to digital converters.

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