LMH6521 High Performance Dual DVGA | TI.com

LMH6521
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High Performance Dual DVGA

High Performance Dual DVGA - LMH6521
Datasheet
 

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

Parametrics

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Part number Order 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz Acl, min spec gain (V/V) Approx. price (US$) Architecture BW @ Acl (MHz) Gain (Max) (dB) Iq per channel (Typ) (mA) Number of channels (#) Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Total supply voltage (Max) (+5V=5, +/-5V=10) Total supply voltage (Min) (+5V=5, +/-5V=10) Vs (Min) (V) Vs (Max) (V)
LMH6521 Order now 84     83     200     0.53     5.83 | 1ku     VGA
Fully Differential ADC Driver    
1400     26     113     2     -40 to 85     WQFN | 32     32WQFN: 25 mm2: 5 x 5 (WQFN | 32)     5.25     4.75     4.75     5.25    
LMH6522 Order now 78     75     200     0.61     9.26 | 1ku     VGA
Fully Differential ADC Driver    
1400     26     116     4     -40 to 85     WQFN | 54     54WQFN: 55 mm2: 5.5 x 10 (WQFN | 54)     5.25     4.75     4.75     5.25    
LMH6523 Order now 78     75     200     0.5     9.26 | 1ku     VGA
Fully Differential ADC Driver    
1400     26     116     4     -40 to 85     WQFN | 54     54WQFN: 55 mm2: 5.5 x 10 (WQFN | 54)     5.25     4.75     4.75     5.25