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SA5205A Datasheet, PDF (2/13 Pages) NXP Semiconductors – Wide-band high-frequency amplifier | |||
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Philips Semiconductors
Wide-band high-frequency amplifier
Product specification
SA5205A
DESCRIPTION
The SA5205A family of wideband amplifiers replace the SA5205
family. The âAâ parts are fabricated on a rugged 2µm bipolar process
featuring excellent statistical process control. Electrical
performance is nominally identical to the original parts.
The SA5205A is a high-frequency amplifier with a fixed insertion
gain of 20dB. The SA5205A operates with a single supply of 6V, and
only draws 24mA of supply current, which is much less than
comparable hybrid parts. The noise figure is 4.8dB in a 75⦠system
and 6dB in a 50⦠system.
Until now, most RF or high-frequency designers had to settle for
discrete or hybrid solutions to their amplification problems. Most of
these solutions required trade-offs that the designer had to accept in
order to use high-frequency gain stages. These include high-power
consumption, large component count, transformers, large packages
with heat sinks, and high part cost. The SA5205A solves these
problems by incorporating a wide-band amplifier on a single
monolithic chip.
The part is well matched to 50 or 75⦠input and output impedances.
The Standing Wave Ratios in 50 and 75⦠systems do not exceed
1.5 on either the input or output from DC to the -3dB bandwidth limit.
Since the part is a small monolithic IC die, problems such as stray
capacitance are minimized. The die size is small enough to fit into a
very cost-effective 8-pin small-outline (SO) package to further
reduce parasitic effects.
No external components are needed other than AC coupling
capacitors because the SA5205A is internally compensated and
matched to 50 and 75â¦. The amplifier has very good distortion
specifications, with second and third-order intermodulation
intercepts of +24dBm and +17dBm respectively at 100MHz.
The device is ideally suited for 75⦠cable television applications
such as decoder boxes, satellite receiver/decoders, and front-end
amplifiers for TV receivers. It is also useful for amplified splitters and
antenna amplifiers.
The part is matched well for 50⦠test equipment such as signal
generators, oscilloscopes, frequency counters and all kinds of signal
analyzers. Other applications at 50⦠include mobile radio, CB radio
and data/video transmission in fiber optics, as well as broad-band
LANs and telecom systems. A gain greater than 20dB can be
achieved by cascading additional SA5205As in series as required,
without any degradation in amplifier stability.
PIN CONFIGURATIONS
D Packages
VCC 1
VIN 2
GND 3
GND 4
20dB
8 VCC
7 VOUT
6 GND
5 GND
TOP VIEW
Figure 1. Pin Configuration
SR00215
FEATURES
⢠600MHz bandwidth
⢠20dB insertion gain
⢠4.8dB (6dB) noise figure ZO=75⦠(ZO=50â¦)
⢠No external components required
⢠Input and output impedances matched to 50/75⦠systems
⢠2000V ESD protection
APPLICATIONS
⢠75⦠cable TV decoder boxes
⢠Antenna amplifiers
⢠Amplified splitters
⢠Signal generators
⢠Frequency counters
⢠Oscilloscopes
⢠Signal analyzers
⢠Broad-band LANs
⢠Fiber-optics
⢠Modems
⢠Mobile radio
⢠Security systems
⢠Telecommunications
ORDERING INFORMATION
DESCRIPTION
8-Pin Plastic Small Outline (SO) package
TEMPERATURE RANGE
-40 to +85°C
ORDER CODE
SA5205AD
DWG #
SOT96-1
1997 Nov 07
2
853-1598 18662
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