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Part Number: LT5524
Description: The LT®5524 is a programmable gain amplifier (PGA) with bandwidth extending from low frequency (LF...
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LT5524
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DataSheet
General Description
LT5524 General Description
The LT®5524 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 peakingfree 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.
LT5524 Maximum Ratings
(Notes 1, 2)
Power Supply Voltage (VCC1, VCC2) ..........................6V
Output DC Voltage (OUT+, OUT) ............................. 7V
Control Input Voltage (EN, PGAx) ............. 0.5V to VCC
Signal Input Voltage (IN+, IN) ..................0.5V to 3V
Operating Ambient Temperature Range .. 40 to 85
Storage Temperature Range ................. 65 to 150
Lead Temperature (Soldering, 10 sec).................. 300
Power Supply Voltage (VCC1, VCC2) ..........................6V
Output DC Voltage (OUT+, OUT) ............................. 7V
Control Input Voltage (EN, PGAx) ............. 0.5V to VCC
Signal Input Voltage (IN+, IN) ..................0.5V to 3V
Operating Ambient Temperature Range .. 40 to 85
Storage Temperature Range ................. 65 to 150
Lead Temperature (Soldering, 10 sec).................. 300
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
` 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 Typical Application
` High Linearity ADC Driver
` IF Sampling Receivers
` VGA IF Power Amplifier
` 50 Driver
` Instrumentation Applications
` IF Sampling Receivers
` VGA IF Power Amplifier
` 50 Driver
` Instrumentation Applications
LT5524 Connection Diagram
LT5524
PDF/DataSheet Download
- Datasheet: LT5524
- File Size: 226876 KB
- Manufacturer: LINER [Linear Technology]
- Click here to Download
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