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CLC5506IM Schematic ( PDF Datasheet ) - National Semiconductor

Teilenummer CLC5506IM
Beschreibung Gain Trim Amplifier (GTA)
Hersteller National Semiconductor
Logo National Semiconductor Logo 




Gesamt 12 Seiten
CLC5506IM Datasheet, Funktion
September 1999
CLC5506
Gain Trim Amplifier (GTA)
General Description
The CLC5506 is a low-noise amplifier with programmable
gain for use in cellular base stations, WLL, radar and RF/IF
subsystems where gain-control is required to increase the
dynamic range. The CLC5506 allows designers to compen-
sate for manufacturing component tolerances and tempera-
ture variations in receiver front ends. Maximum amplifier
gain is set at 26dB . A three-line MICROWIRE serial inter-
face allows 16dB of attenuation from the max gain setting in
precise 0.25dB steps.
The CLC5506 uses a differential input and output, allowing
large output swings on a single 5V rail. The differential output
is well suited for impedance matching networks driving SAW
filters or directly driving differential input analog to digital
converters (ADC). The differential output also makes it pos-
sible to drive transformers allowing designers the ability to
match a wide variety of transmission lines. The output ampli-
fier has excellent output drive with low distortion.
Digital control of the CLC5506 is accomplished using MI-
CROWIRE Interface. Data Out and a Load Enable are incor-
porated so that more than one CLC5506/channel may be
programmed per system.
The CLC5506 maintains a 600MHz performance bandwidth
over its entire gain and attenuation range from +10dB to
+26dB. Gain control is divided into 64 equal steps of 0.25dB
and is dB-linear. Output drive and distortion performance are
excellent; In a 50system, the third-order output intercept
point is +22dBm at nominal gain of 18dB at 25˚C. The
CLC5506 operates over the industrial temperature range of
−40˚C to +85˚C.
Features
n 600MHz bandwidth
n 26dB maximum gain @ 150MHz
n 16dB gain control range
n Attenuation step size: 0.25dB
n 4.8dB noise figure @ 26dB
n +22dBm output IP3 @ 18dB gain
n Digital dB Lineargain control
n Supply voltage: 5V
n Supply current: 75mA
n Supply shutdown: 35µA
n Package: SOIC-14
n Typical at 25˚C
Applications
n Cellular base-stations
n Base station repeater
n Wireless Local Loop
n Radar
n Receivers
n IF amplifiers
n Digital IF receiver
n Software radio
n Satellite communications
Frequency Response vs. Gain Setting
MICROWIRE
© 1999 National Semiconductor Corporation DS101050
DS101050-1
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CLC5506IM Datasheet, Funktion
Typical Performance Characteristics (VCCA = VCCD = +5V, RLdiff = 100, TA = 25˚C, unless other-
wise specified.)
Frequency Response vs. Gain Setting (0.25dB/step)
Gain vs. Input Code
DS101050-4
Gain Error vs. Input Code
DS101050-5
Output 3rd Order Intercept vs. Input Code
DS101050-6
Input 3rd Order Intercept vs. Input Code
DS101050-7
Noise Figure vs. Input Code
DS101050-8
Gain Change Over Temperature vs. Frequency
DS101050-9
Gain Change Over Temperature vs. Frequency
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DS101050-10
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DS101050-11

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CLC5506IM pdf, datenblatt
Physical Dimensions inches (millimeters) unless otherwise noted
14-Pin Small Outline
NSC Package Number M14A
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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.
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