Rev. 5/10
AC541
AC542
Typical Values
20 TO 500 MHz
TO-8 CASCADABLE AMPLIFIERS
AC541
37 dB
2.8 dB
+6.5 dBm
+20.0 dBm
AC542
36 dB
3.3 dB
+14.0 dBm
+28.0 dBm
High Reverse Isolation.
. . . . . . . . . . . . . . . . . . .
Low Noise Figure
. . . . . . . . . . . . . . . . . . . . . . . .
High Output Level
. . . . . . . . . . . . . . . . . . . . . . .
High Third Order I.P.
. . . . . . . . . . . . . . . . . . . . . .
High Efficiency
High Performance Thin Film
Standard Size TO-8 Package
AC541/AC542
TO-8 Package for Amplifiers
SPECIFICATIONS
*
Parameter
Frequency (Min.)
Small Signal Gain (Min.)
AC541
AC542
Gain Flatness (Max.)
Noise Figure (Max.)
SWR (Max.)
Power Output (Min.)
@ 1dB comp.
Reverse Isolation
DC Current (Max.)
AC541
AC542
Input
Output
AC541
AC542
AC541
AC542
AC541
AC542
15.5 dB
17.5 dB
< ±0.5 dB
2.8 dB
3.3 dB
< 1.8:1
< 1.2:1
+6.5 dBm
+14.0 dBm
37.0 dB
36.0 dB
27.0 mA
47.0 mA
14.5 dB
16.5 dB
±0.7 dB
3.3^ dB
3.8^ dB
2.0:1
1.5:1
+5.5 dBm
+13.5 dBm
—
—
30.0 mA
50.0 mA
14.0 dB
16.0 dB
±1.0 dB
4.0^ dB
4.5^ dB
2.0:1
1.5:1
+5.0 dBm
+13.0 dBm
—
—
32.0 mA
53.0 mA
Typical
10-600 MHz
Guaranteed
0 to 50 °C
-55 to +85 °C
20-500 MHz
20-500 MHz
AS541/AS542
SMTO-8 Package for Amplifiers
* Measured in a 50-ohm system at +15 Vdc unless otherwise specified.
^ 0.4 higher above 450 MHz.
INTERMODULATION PERFORMANCE
Typical @ 25 °C
AC541
+32 dBm
+26 dBm
+20 dBm
AC542
+41 dBm
+35 dBm
+28 dBm
Second Order Harmonic Intercept Point
. . . . .
Second Order Two Tone Intercept Point
. . . . . .
Third Order Two Tone Intercept Point
. . . . . . . .
ABSOLUTE MAXIMUM RATINGS
Storage Temperature
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -62 to +125 °C
Maximum Case Temperature
. . . . . . . . . . . . . . . . . . . . . . . .
+125 °C
Maximum DC Voltage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+19 Volts
Maximum Continuous RF Input Power
. . . . . . . . . . . . . . . .
+13 dBm
Maximum Short Term Input Power
(1 Minute Max.) . . . . . . .
50 Milliwatts
Maximum Peak Power
(3 µsec Max.) . . . . . . . . . . . . . . . . . .
0.5 Watt
Burn-in Temperature
(AC541) . . . . . . . . . . . . . . . . . . . . . . .
+125 °C
Burn-in Temperature
(AC542) . . . . . . . . . . . . . . . . . . . . . . . .
+105 °C
Thermal Resistance
1
(θjc; AC541) . . . . . . . . . . . . . . . . . . . .
+53 °C/Watt
Thermal Resistance
1
(θjc; AC542) . . . . . . . . . . . . . . . . . . . .
+54 °C/Watt
Junction Temperature Rise Above Case
(Tjc; AC541) . . . .
+23.9 °C
Junction Temperature Rise Above Case
(Tjc; AC542) . . . .
+40.4 °C
1
Thermal resistance is based on total power dissipation.
DIMENSIONS ARE IN INCHES [MILLIMETERS]
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AC541/AC542
TYPICAL PERFORMANCE
Gain vs Temperature AC541
17.0
GAIN - dB
16.0
15.0
14.0
10
20
30
50
100
200
300
FREQUENCY - MHz
400
500
600
TYPICAL AUTOMATIC TEST DATA
Model: AC542
FREQ
MHZ
10
20
50
100
200
300
400
500
600
SWR
IN
1.68
1.35
1.15
1.13
1.15
1.22
1.38
1.54
1.48
SWR
OUT
1.18
1.11
1.08
1.09
1.16
1.22
1.29
1.29
1.21
Vcc=+15V
GAIN
DB
17.3
17.8
18.1
18.0
17.7
17.7
18.0
18.5
19.0
DELAY
NSEC
Icc= 47.00
REV/ISO
DB
-37.2
-36.5
-35.9
-35.8
-36.1
-36.6
-36.5
-36.7
-36.7
1.415
0.865
0.677
0.641
0.689
0.730
0.866
Gain vs Temperature AC542
19.0
GAIN - dB
18.0
17.0
16.0
10
20
30
50
100
200
300
FREQUENCY - MHz
400
500
600
NOISE FIGURE - dB
Noise Figure
5.0
4.0
3.0
AC541
2.0
10
20
30
50
100
200
300
FREQUENCY - MHz
400
500
600
AC542
Model: AC542
FREQ.
MHz
10
20
50
100
200
300
400
500
600
700
Model: AC542
FREQ
MHZ
10
20
50
100
200
300
400
500
600
Model: AC541
FREQ
MHZ
10
20
50
100
200
300
400
500
600
Model: AC541
FREQ
MHZ
10
20
50
100
200
300
400
500
600
S11
MAG
0.25
0.15
0.07
0.06
0.07
0.10
0.16
0.21
0.19
0.06
ANG
-51.1
-50.6
-30.6
0.5
27.2
55.2
52.1
36.4
17.2
12.3
LINEAR S-PARAMETERS
Vcc=+15V
S21
S12
MAG
ANG
MAG
ANG
7.30
-160.3
0.014
15.0
7.80
-172.9
0.015
7.0
8.07
171.8
0.016
-3.0
7.94
156.3
0.016
-9.0
7.69
131.9
0.016
-26.0
7.70
108.8
0.015
-40.0
7.96
84.0
0.015
-58.0
8.40
57.7
0.015
-80.0
8.94
26.6
0.015
-106.0
8.92
-10.7
0.013
-140.0
Vcc=+12V
GAIN
DB
17.1
17.7
18.0
17.8
17.6
17.6
18.0
18.6
19.1
Vcc=+15V
GAIN
DB
14.9
15.6
16.0
15.8
15.6
15.6
15.6
16.2
16.5
Vcc=+12V
GAIN
DB
14.6
15.3
15.7
15.5
15.3
15.3
15.7
16.1
16.3
Icc= 47.00
S22
MAG
ANG
0.08
121.5
0.05
103.8
0.04
84.7
0.04
78.6
0.07
63.3
0.10
45.1
0.12
24.4
0.13
3.8
0.10
-26.6
0.04
-121.4
Icc= 37.58
REV/ISO
DB
-37.2
-36.0
-36.0
-36.0
-36.1
-36.4
-36.0
-36.6
-36.5
Icc= 26.89
REV/ISO
DB
-38.8
-38.1
-37.3
-37.1
-37.6
-37.9
-38.1
-38.0
-38.2
Icc= 21.63
REV/ISO
DB
-38.7
-38.4
-37.7
-37.3
-38.4
-37.3
-37.6
-38.3
-38.5
Power Output at 1 dB Compression
16.0
OUTPUT POWER - dBm
14.0
12.0
10.0
8.0
6.0
4.0
10
20
30
50
100
200
300
FREQUENCY - MHz
400
500
600
AC541
AC542
SWR
IN
1.68
1.36
1.16
1.16
1.17
1.22
1.38
1.53
1.44
SWR
OUT
1.18
1.11
1.08
1.09
1.15
1.21
1.26
1.27
1.20
DELAY
NSEC
1.418
0.850
0.671
0.636
0.689
0.742
0.867
SWR
IN
2.15
1.75
1.55
1.56
1.55
1.51
1.59
1.73
1.68
SWR
OUT
1.16
1.10
1.06
1.06
1.09
1.11
1.13
1.10
1.02
DELAY
NSEC
1.537
0.915
0.718
0.677
0.727
0.790
0.921
INTERCEPT POINT - dBm
Intercept Point - AC541
50
40
30
20
10
10
20
30
50
100
200
300
FREQUENCY - MHz
400
500
600
2nd HAR
IP 2
IP 3
SWR
IN
2.22
1.82
1.62
1.61
1.60
1.53
1.58
1.68
1.62
SWR
OUT
1.16
1.10
1.06
1.05
1.09
1.11
1.12
1.09
1.02
DELAY
NSEC
1.569
0.917
0.716
0.686
0.742
0.804
0.953
INTERCEPT POINT - dBm
Intercept Point - AC542
60
50
2nd HAR
40
IP 2
30
IP 3
20
10
20
30
50
100
200
300
FREQUENCY - MHz
400
500
600
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