LMH6521 High Performance Dual DVGA | TI.com

LMH6521
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High Performance Dual DVGA

High Performance Dual DVGA - LMH6521
Datasheet
LMH6521 High Performance Dual DVGA datasheet (Rev. E)
 

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