LT1993-4 900MHz 低失真、低噪声差分放大器/ADC 驱动器(AV = 4V/V)

The LT®1993-4 is a low distortion, low noise Differential Amplifier/ADC driver for use in applications from DC to 900MHz. The LT1993-4 has been designed for ease of  use, with minimal support circuitry required. Exceptionally low input-referred noise and low distortion products (with either single-ended or differential inputs) make the LT1993-4 an excellent solution for driving high speed 12-bit and 14-bit ADCs. In addition to the normal unfiltered outputs (+OUT and -OUT), the LT1993-4 has a built-in 175MHz differential lowpass filter and an additional pair of filtered outputs (+OUTFILTERED, -OUTFILTERED) to reduce external filtering components when driving high speed ADCs. The output common mode voltage is easily set via the VOCM pin, eliminating either an output transformer or AC-coupling capacitors in many applications.

The LT1993-4 is designed to meet the demanding requirements of communications transceiver applications. It can be used as a differential ADC driver, a general-purpose differential gain block, or in any other application requiring differential drive. The LT1993-4 can be used in data acquisition systems required to function at frequencies down to DC.

The LT1993-4 operates on a 5V supply and consumes 100mA. It comes in a compact 16-lead 3 × 3 QFN package and operates over a -40°C to 85°C temperature range

产品特点 Features
  • 800MHz –3dB Bandwidth
  • Fixed Gain of 2V/V (6dB)
  • Low Distortion:
       38dBm OIP3, –70dBc HD3 (70MHz, 2VP-P)
       51dBm OIP3, –94dBc HD3 (10MHz, 2VP-P)
  • Low Noise: 12.3dB NF, en = 3.8nV/√Hz (70MHz)
  • Differential Inputs and Outputs
  • Additional Filtered Outputs
  • Adjustable Output Common Mode Voltage
  • DC- or AC-Coupled Operation
  • Minimal Support Circuitry Required
  • Small 0.75mm Tall 16-Lead 3 × 3 QFN Package
封装
LT1993-4 封装
应用
  • Differential ADC Driver for: Imaging Communications
  • Differential Driver/Receiver
  • Single Ended to Differential Conversion
  • Differential to Single Ended Conversion
  • Level Shifting
  • IF Sampling Receivers
  • SAW Filter Interfacing/Buffering
典型应用图
LT1993-4 典型应用
参数
LT1993-4 参数
LT1993-4 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) *
LT1993CUD-10 QFN 16 C $4.20  $2.95 
LT1993CUD-10#PBF QFN 16 C $4.20  $2.95 
LT1993CUD-10#TR QFN 16 C $3.01 
LT1993CUD-10#TRPBF QFN 16 C $3.01 
LT1993CUD-2 QFN 16 C $4.20  $2.95 
LT1993CUD-2#PBF QFN 16 C $4.20  $2.95 
LT1993CUD-2#TR QFN 16 C $3.01 
LT1993CUD-2#TRPBF QFN 16 C $3.01 
LT1993CUD-4 QFN 16 C $4.20  $2.95 
LT1993CUD-4#PBF QFN 16 C $4.20  $2.95 
LT1993CUD-4#TR QFN 16 C $3.01 
LT1993CUD-4#TRPBF QFN 16 C $3.01 
LT1993IUD-10 QFN 16 I $4.65  $3.40 
LT1993IUD-10#PBF QFN 16 I $4.65  $3.40 
LT1993IUD-10#TR QFN 16 I $3.46 
LT1993IUD-10#TRPBF QFN 16 I $3.46 
LT1993IUD-2 QFN 16 I $4.65  $3.40 
LT1993IUD-2#PBF QFN 16 I $4.65  $3.40 
LT1993IUD-2#TR QFN 16 I $3.46 
LT1993IUD-2#TRPBF QFN 16 I $3.46 
LT1993IUD-4 QFN 16 I $4.65  $3.40 
LT1993IUD-4#PBF QFN 16 I $4.65  $3.40 
LT1993IUD-4#TR QFN 16 I $3.46 
LT1993IUD-4#TRPBF QFN 16 I $3.46 
LT1993-4 数据手册及相关资料下载
  1. 数据手册(英文) : LT1993-4 - 900MHz Low Distortion, Low Noise Differential Amplifier/ADC Driver (AV = 4V/V).PDF
  2. 设计要点 (中文) : DN366 - 低失真、低噪声差分放大器驱动在苛刻通信收发器中的高速 ADC.PDF
  3. 设计要点 (英文) : DN366 - Low Distortion, Low Noise Differential Amplifier Drives High Speed ADCs in Demanding Communications Transceivers.PDF
  4. 可靠性数据 : R512 Reliability Data .