Datasheet > CLC5509

CLC5509

更新时间： 2024-11-08 22:50:31

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器
页数	文件大小	规格书
11页	448K
描述
Ultra-Low Noise Preamplifier

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CLC5509 数据手册

January 2000

CLC5509

Ultra-Low Noise Preamplifier

General Description

Features

total input noise 12MHz

n 0.58nV

The CLC5509 is a high performance, ultra-low noise pream-

plifier designed for applications requiring unconditional sta-

bility for wide ranges of complex input loads. Both input im-

pedance and gain are externally adjustable, which make it

simple to interface to peizoelectric ultrasound transducers.

.5ns group delay repeatability

n High cutoff −3dB 33MHz

n Low cutoff −3dB 0.5MHz

n 2.0dB noise figure 50Ω

n −60dBc intermod for 2V_PP5MHz

n Supply current: 11mA

The CLC5509 preamplifier’s low 0.58nV

total input

noise makes it ideal for noise sensitive front ends. The high

repeatability in group delay over voltage and temperature

translates into precision edge measurements for Doppler ap-

plications.

n Available in 8-pin SOIC

Applications

n Ultrasound preamp

n Tape drive preamp

n Disk drive preamp

The IC consists of an emitter input, common base amplifier

stage followed by a low distortion, closed loop buffer. Exter-

nal negative feedback creates a well controlled input imped-

ance to allow a near noiseless active input transmission line

termination. The preamp is stable against changes in source

impedance of 50 to 200Ω over temperature and supply

variations, with gains from 14dB to 26dB. The CLC5509

preamp architecture is also well suited for use with

magneto-resistive tape or disk drive heads. In these applica-

tions the head bias current can be reused to bias the

preamp. The part is packaged in an 8-pin plastic SOIC, and

Group Delay Repeatability

runs off 5V supplies. External biasing is required for the in-

put signal path.

The CLC5509 is constructed using an advanced comple-

mentary bipolar process and National Semiconductor’s

proven high performance architectures.

DS101304-1

Connection Diagram

DS101304-3

Pinout

SOIC

DS101304

www.national.com

12 3 4 5 6 7...11

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