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

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

LT1993-4是Linear公司的一款高速放大器产品，LT1993-4是900MHz 低失真、低噪声差分放大器/ADC 驱动器（AV = 4V/V），本站介绍了LT1993-4的封装应用图解、特点和优点、功能等，并给出了与LT1993-4相关的凌力尔特元器件型号供参考。

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

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

功能描述

The LT1993-4 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.

特点

900MHz -3dB Bandwidth

Fixed Gain of 4V/V (12dB)

Low Distortion:40dBm OIP3, -73dBc HD3 (70MHz 2VP-P)51dBm OIP3, -94dBc HD3 (10MHz 2VP-P)

Low Noise: 14.5dB NF, en = 2.35nV/√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

应用

Differential ADC Driver for:ImagingCommunications

Differential Driver/Receiver

Single Ended to Differential Conversion

Differential to Single Ended Conversion

Level Shifting

IF Sampling Receivers

SAW Filter Interfacing/Buffering

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LT1993CUD-4	3x3 QFN-16	C	$4.20	$2.95
LT1993CUD-4#PBF	3x3 QFN-16	C	$4.20	$2.95
LT1993CUD-4#TR	3x3 QFN-16	C		$3.01
LT1993CUD-4#TRPBF	3x3 QFN-16	C		$3.01
LT1993IUD-4	3x3 QFN-16	I	$4.65	$3.40
LT1993IUD-4#PBF	3x3 QFN-16	I	$4.65	$3.40
LT1993IUD-4#TR	3x3 QFN-16	I		$3.46
LT1993IUD-4#TRPBF	3x3 QFN-16	I		$3.46