sa5205a.pdf

(114 KB) Pobierz
11019613 UNPDF
INTEGRATED CIRCUITS
SA5205A
Wide-band high-frequency amplifier
Product specification
Replaces data of February 24, 1992
1997 Nov 07
IC17 Data Handbook
Philips Semiconductors
11019613.009.png 11019613.010.png
Philips Semiconductors
Product specification
Wide-band high-frequency amplifier
SA5205A
DESCRIPTION
The SA5205A family of wideband amplifiers replace the SA5205
family. The ‘A’ parts are fabricated on a rugged 2 m m 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
PIN CONFIGURATIONS
D Packages
V CC
V IN
GND
1
8
V CC
V OUT
GND
2
20dB
7
3
6
W
system
GND
4
5
GND
and 6dB in a 50
W
system.
TOP VIEW
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 W input and output impedances.
The Standing Wave Ratios in 50 and 75
SR00215
Figure 1. Pin Configuration
FEATURES
•
600MHz bandwidth
•
20dB insertion gain
•
4.8dB (6dB) noise figure ZO=75 W (ZO=50 W )
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.
W
•
No external components required
•
Input and output impedances matched to 50/75
W
systems
•
2000V ESD protection
No external components are needed other than AC coupling
capacitors because the SA5205A is internally compensated and
matched to 50 and 75 W . 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 W 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 W test equipment such as signal
generators, oscilloscopes, frequency counters and all kinds of signal
analyzers. Other applications at 50
APPLICATIONS
•
75 W cable TV decoder boxes
•
Antenna amplifiers
•
Amplified splitters
•
Signal generators
•
Frequency counters
•
Oscilloscopes
•
Signal analyzers
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.
W
•
Broad-band LANs
•
Fiber-optics
•
Modems
•
Mobile radio
•
Security systems
•
Telecommunications
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
8-Pin Plastic Small Outline (SO) package
-40 to +85 ° C
SA5205AD
SOT96-1
1997 Nov 07
2
853-1598 18662
11019613.011.png
 
Philips Semiconductors
Product specification
Wide-band high-frequency amplifier
SA5205A
EQUIVALENT SCHEMATIC
V CC
R1
R2
Q3
V OUT
Q6
Q2
R3
V IN
Q1
Q4
RE2
RF1
RE1
Q5
RF2
SR00216
Figure 2. Equivalent Schematic
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNIT
V CC
Supply voltage
9
V
V AC
AC input voltage
5
V P-P
T A
Operating ambient temperature range
SA grade
-40 to +85
° C
P DMAX
Maximum power dissipation,
T A =25 ° C (still-air) 1, 2
D package
780
mW
C, at the following rates:
D package at 6.2mW/ ° C
2. See “Power Dissipation Considerations” section.
°
1997 Nov 07
3
NOTES:
1. Derate above 25
11019613.001.png 11019613.002.png 11019613.003.png 11019613.004.png 11019613.005.png 11019613.006.png
Philips Semiconductors
Product specification
Wide-band high-frequency amplifier
SA5205A
DC ELECTRICAL CHARACTERISTICS
V CC =6V, Z S =Z L =Z O =50 W and T A =25 ° C in all packages, unless otherwise specified.
SA5205A
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
SYMBOL
PARAMETER
UNIT
Min
Typ
Max
V CC
Operating supply voltage range
Over temperature
5
5
8
8
V
V
I CC
Supply current
Over temperature
20
19
25
25
32
33
mA
mA
S21
Insertion gain
f=100MHz
Over temperature
17
16.5
19
21
21.5
dB
f=100MHz
25
S11
Input return loss
dB
S11
dB
DC - f MAX
12
Output return loss
f=100MHz
27
S22
dB
S22
dB
DC - f MAX
12
f=100MHz
-25
S12
Isolation
dB
S12
Isolation
dB
DC - f MAX
-18
t R
Rise time
500
ps
t P
Propagation delay
500
ps
BW
Bandwidth
±
0.5dB
450
MHz
f MAX
Bandwidth
-3dB
550
MHz
Noise figure (75 W )
f=100MHz
4.8
dB
Noise figure (50 W )
f=100MHz
6.0
dB
Saturated output power
f=100MHz
+7.0
dBm
1dB gain compression
f=100MHz
+4.0
dBm
Third-order intermodulation
intercept (output)
f=100MHz
+17
dBm
Second-order intermodulation
intercept (output)
f=100MHz
+24
dBm
1997 Nov 07
4
TEST CONDITIONS
Input return loss
Output return loss
11019613.007.png
Philips Semiconductors
Product specification
Wide-band high-frequency amplifier
SA5205A
35
34
32
30
28
26
24
22
20
18
16
11
9
8
7
6
T A = 25 o C
5
4
V CC = 7V
V CC = 6V
V CC = 5V
3
2
1
0
–1
–2
–3
–4
–5
–6
V CC = 8V
Z O = 50 W
T A = 25 o C
5
5.5
6
6.5
7
7.5
8
10 3
SR00218
Figure 7. Saturated Output Power vs Frequency
10 1
2
4
6 8
10 2
2
4
6 8
SUPPLY VOLTAGE—V
SR00217
FREQUENCY—MHz
Figure 3. Supply Current vs Supply Voltage
9
10
9
8
7
6
5
4
3
2
1
0
–1
–2
–3
–4
–5
–6
V CC = 8V
8
W
T A = 25 o C
V CC = 6V
v cc = 8v
v cc = 7v
V CC = 5V
V CC = 7V
7
v cc = 6v
v cc = 5v
6
Z O = 50 W
T A = 25 o C
5
10 12 468
10 2
2 468
10 3
SR00219
10 2 10 3
SR00220
Figure 8. 1dB Gain Compression vs Frequency
10 12 468
2 468
FREQUENCY—MHz
FREQUENCY—MHz
Figure 4. Noise Figure vs Frequency
25
40
v cc = 8v
v cc = 7v
35
20
30
25
15
v cc = 6v
v cc = 5v
20
W
T A = 25 o C
W
T A = 25 o C
15
10
10
10 12 468
10 2
2 468
10 3
4
5
6
7
8
9
10
POWER SUPPLY VOLTAGE—V
FREQUENCY—MHz
SR00221
SR00222
Figure 9. Second-Order Output Intercept vs Supply Voltage
Figure 5. Insertion Gain vs Frequency (S 21 )
25
30
T A = 55 o C
T A = 25 o C
25
20
20
15
T A = 85 o C
T A = 125 o C
15
Z O = 50 W
T A = 25 o C
V CC = 8V
Z O = 50
10
W
10
10 12 468
10 2
2 468
10 3
5
4
5
6
7
8
9
10
FREQUENCY—MHz
SR00223
SR00224
Figure 10. Third-Order Intercept vs Supply Voltage
POWER SUPPLY VOLTAGE—V
Figure 6. Insertion Gain vs Frequency (S 21 )
1997 Nov 07
5
10
Z O = 50
Z O = 50
Z O = 50
11019613.008.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin