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LT5524 Datasheet

LT5524 Datasheet

Low Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain
Part No.: LT5524
Page: 16 Pages
Size: 170 KB
Manufacturer: Linear Technology
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Views: 2
Update Time: 2023-11-20 11:37:06
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LT5524 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT5524EFE#PBF Tube 74   1 20 -40°C ~ 85°C 20-Lead TSSOP  
LT5524EFE#TRPBF Reel 2500   1 20 -40°C ~ 85°C 20-Lead TSSOP  
LT5524EFE#TRMPBF Reel 500   1 20 -40°C ~ 85°C 20-Lead TSSOP  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT5524 Datasheet(PDF)

LT5524 Datasheet(Picture)

LT5524 Features

  • Output IP3 at 100MHz: 40dBm
  • Maximum Output Power: 16dBm
  • Bandwidth: LF to 540MHz
  • Propagation Delay: 0.8ns
  • Maximum Gain: 27dB
  • Gain Control Range: 22.5dB
  • Gain Control Step: 1.5dB
  • Gain Control Settling Time: 500ns
  • Noise Figure: 8.6dB at 100MHz (Max Gain)
  • Output Noise Floor: –138dBm/Hz (Max Gain)
  • Reverse Isolation: –92dB
  • Single Supply: 4.75V to 5.25V
  • Shutdown Mode
  • Enable/Disable Time: 1µs
  • Differential I/O Interface
  • 20-Lead TSSOP Package

LT5524 Applications

  • High Linearity ADC Driver
  • IF Sampling Receivers
  • VGA IF Power Amplifier
  • 50Ω Driver
  • Instrumentation Applications

LT5524 Description

The LT5524 is a programmable gain amplifier (PGA) with bandwidth extending from low frequency (LF) to 540MHz. It consists of a digitally controlled variable attenuator, followed by a high linearity amplifier. Four parallel digital inputs control the gain over a 22.5dB range with 1.5dB step resolution. An on-chip power supply regulator/filter helps isolate the amplifier signal path from external noise sources.

The LT5524’s open-loop architecture offers stable operation for any practical load conditions, including peaking-free AC response when driving capacitive loads, and excellent reverse isolation.

The LT5524 may be operated broadband, where the output differential RC time constant sets the bandwidth, or it may be used as a narrowband driver with the appropriate output filter.

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