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PDF CLC5509CM Data sheet ( Hoja de datos )
| Número de pieza | CLC5509CM | |
| Descripción | Ultra-Low Noise Preamplifier | |
| Fabricantes | National Semiconductor | |
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January 2000
CLC5509
Ultra-Low Noise Preamplifier
General Description
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.
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.
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
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.
Features
n 0.58nV total input noise @ 12MHz
n < .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 2VPP @ 5MHz
n Supply current: 11mA
n Available in 8-pin SOIC
Applications
n Ultrasound preamp
n Tape drive preamp
n Disk drive preamp
Group Delay Repeatability
Connection Diagram
DS101304-1
DS101304-3
Pinout
SOIC
© 2000 National Semiconductor Corporation DS101304
www.national.com
1 page  
Typical Performance Characteristics (Continued)
3rd Harmonic Distortion
2rd Harmonic Distortion
2rd Harmonic Distortion
DS101304-10
Intermodulation Distortion
DS101304-11
Intermodulation Distortion
DS101304-12
DS101304-13
Total Input Referred Noise (RS = 50Ω)
DS101304-14
5
DS101304-15
www.national.com
5 Page 
Physical Dimensions inches (millimeters) unless otherwise noted
8-pin SOIC
Order Number CLC5509CM
NS Product Number M08A
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
National Semiconductor
Corporation
Americas
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: [email protected]
www.national.com
National Semiconductor
Europe
Fax: +49 (0) 1 80-530 85 86
Email: [email protected]
Deutsch Tel: +49 (0) 1 80-530 85 85
English Tel: +49 (0) 1 80-532 78 32
Français Tel: +49 (0) 1 80-532 93 58
Italiano Tel: +49 (0) 1 80-534 16 80
National Semiconductor
Asia Pacific Customer
Response Group
Tel: 65-2544466
Fax: 65-2504466
Email: [email protected]
National Semiconductor
Japan Ltd.
Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet CLC5509CM.PDF ] | |
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