High Performance Dual DVGA - LMH6521

LMH6521 (ACTIVE)

High Performance Dual DVGA

 

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.

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

View more

Parametrics Compare all products in Programmable & Variable Gain Amplifiers (PGA/VGA)

 
PGA/VGA
Number of Channels (#)
Vs (Min) (V)
Vs (Max) (V)
BW @ Acl (MHz)
Acl, min spec gain (V/V)
Max Gain (dB)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
LMH6521 LMH6522 LMH6523
VGA    VGA    VGA   
2    4    4   
4.75    4.75    4.75   
5.25    5.25    5.25   
1400    1400    1400   
0.53    0.61    0.5   
26    26    26   
-40 to 85    -40 to 85    -40 to 85   
WQFN    WQFN    WQFN   
32WQFN: 25 mm2: 5 x 5(WQFN)    54WQFN: 55 mm2: 5.5 x 10(WQFN)    54WQFN: 55 mm2: 5.5 x 10(WQFN)