LT5524 Low Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain

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 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

产品特点 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

封装

应用

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

典型应用图

参数

LT5524 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LT5524EFE	TSSOP	20	E	$7.41	$5.20
LT5524EFE#PBF	TSSOP	20	E	$7.41	$5.20
LT5524EFE#TR	TSSOP	20	E		$5.30
LT5524EFE#TRPBF	TSSOP	20	E		$5.30

LT5524 数据手册及相关资料下载

数据手册(英文) : LT5524 - Low Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain.PDF
应用指南 (英文) : AN97 - Accurate Measurement of LT5524 Third Order Intermodulation Products.PDF
可靠性数据 : R409 Reliability Data .PDF
产品选型卡 : Differential Amplifiers/High Speed ADC Drivers .PDF