NSC CLC5506IM, CLC5506IMX Datasheet
CLC5506
Gain Trim Amplifier (GTA)
CLC5506Gain Trim Amplifier (GTA)
September 1999
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 compensate for manufacturing component tolerances and temperature variations in receiver front ends. Maximum amplifier
gain is set at 26dB . A three-line MICROWIRE serial interface allows 16dB of attenuation from the max gain setting in
precise 0.25dB steps.
The CLC5506 uses a differential input and output, allowing
large outputswingson a single 5V rail. The differentialoutput
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 possible to drive transformers allowing designers the ability to
match a wide variety of transmission lines. The output amplifier has excellent output drive with low distortion.
Digital control of the CLC5506 is accomplished using MICROWIRE Interface. Data Out and a Load Enable are incorporated 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 50Ω system, 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
n 16dB gain control range
n Attenuation step size: 0.25dB
n 4.8dB noise figure
n +22dBm output IP3
n Digital ″dB Linear″ gain control
n Supply voltage: 5V
n Supply current: 75mA
n Supply shutdown: 35µA
n Package: SOIC-14
n Typical at 25˚C
@
@
26dB
@
18dB gain
150MHz
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
DS101050-1
™
MICROWIRE
© 1999 National Semiconductor Corporation DS101050 www.national.com
Typical Application
DS101050-2
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Connection Diagram
CLC5506 Pin Diagram
DS101050-3
Top View
Pin # Pin Name Description
1 NC No connection
2 GND
A
3 In+ Positive differential input
4 In− Negative differential input
5 LE MICROWIRE load enable input. High impedance CMOS input with Schmitt
6 Clock MICROWIRE clock input. High impedance CMOS input with Schmitt trigger.
7 Data In MICROWIRE data input. High impedance CMOS input with Schmitt trigger.
8 Data Out MICROWIRE data output. High impedance CMOS input with Schmitt trigger.
9 GND
10 V
D
CCD
11 Out− Negative differential Output
12 Out+ Positive differential output
13 GND
14 V
A
CCA
Analog ground
trigger
Data is clocked in on the rising edge of clock.
Binary serial data. Data entered Power Down first.
Digital ground
Digital supply voltage
Analog ground
Analog supply voltage
Ordering Information
Package
SO-14 CLC5506IM Rails M14a
Temperature Range
−40˚C to +85˚C
Transport Media NSC Drawing
CLC5506IMX 2.5k Units Tape and
Reel
CLC5506PCASM Fully loaded evaluation
board
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD tolerance(Note 2)
Human body model 2.5KV
Machine model 250V
Differential input voltage +/−1V
Supply voltage −0.3 to +6V
Digital input voltage −0.3V to V
Analog input voltage −0.3V to V
Output short circuit duration Infinite
Lead temperature (soldering, 10
sec) +300˚C
CC
CC
Storage temperature range −65˚C to 150˚C
Junction temperature 155˚C
Differential voltage between any
two inputs
<
200mV
Operating Ratings (Note 1)
Supply voltage (pins 10 and 14) 5V +/− 10
Ambient temperature range −40˚C to +85˚C
Junction Temperature Range −40˚C to +150˚C
Package thermal resistance, θ
JA
127˚C/W
%
Electrical Characteristics
These conditions apply unless otherwise specified: TJ= 25˚C, V
−30dBm (Note 6),(Note 7).
Symbol Parameter Conditions
Analog I/O
Frequency Response/Distortion/Noise
upper −3dB bandwidth All Gain Codes 600 MHz
upper −1dB bandwidth All Gain Codes 400 MHz
gain flatness in any
1MHz band
group delay 50MHz
group delay ripple 50MHz
output third order
intercept point
noise figure Gain=25.75dB, (Note 6)
1dB output
compression point
nd
harmonic distortion Pin=−30 dBm, fc=200MHz
2
rd
3
harmonic distortion Pin=−30 dBm, fc=200MHz
Input/Output Isolation
power down mode
Gain Parameters: (Note 5)
maximum gain Full temperature range 25.75 dB
minimum gain Full temperature range 10 dB
gain step size Full temperature range 0.25 dB
accuracy of gain
setting
gain variation over
temperature
Input/Output Characteristics:
input resistance Differential 200 Ω
input capacitance Differential 0.5 pF
<f<
10MHz
600MHz, All Gain
Codes
<f<
600MHz 1.5 nsec
<f<
600MHz 0.5 nsec
18dB Gain, f=110MHz 22 dBm
Gain=18dB, (Note 6)
Gain=10dB, (Note 6)
150MHz 4.0 dBm
@
Gain=25.75dB
@
Gain=10dB
@
Gain=25.75dB
@
Gain=10dB
Full frequency band 45 dB
@
25˚C
Full temperature range
CCA
=
=
V
+5V: Gain=25.75dB, R
CCD
Typ
(Note 3)
Ldiff
Limit
(Note 4)
=
100Ω, Pin
=
Units
0.003 dB
4.8
5.7
7.0
46
46
49
56
±
0.05 dB
±
0.5 dB
dB
dB
dB
dBc
dBc
dBc
dBc
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