Control Devices:
MLP 7100 Series
Limiter Diodes
Description
The
MicroMetrics
MLP 7100 series
Limiter diodes are specially processed
PIN diodes with a thin intrinsic region
designed for use in passive or active
limiters over the entire range of fre-
quencies from 100 MHz to beyond 20
GHz. The different “I” region thick-
nesses and capacitances provide vari-
able threshold and leakage power lev-
els and power handling capability.
Features
• Low Loss
• Greater Bandwidth
• Fast Turn on Time
Packaging
• Chip, Glass, Ceramic, Surface Mount
Control Devices
PEAK POWER OUTPUT
(dBm)
Applications
The MLP 7100 series limiters are for
use in waveguides, coax, microstrip or
stripline. Single or cascade devices
may be used depending on power
levels.
Typical Performance
+50
+40
Diode Chip
50Ω
50Ω
MLP7120
MLP7110
MLP7140
MLP7100
MLP7130
+30
+20
+10
0
+10
+20
+30
+40
+50
PEAK POWER INPUT
(dBm)
+60
+66
LEAKAGE POWER
ABOVE 1.0 GHz
(dB)
+8
+6
+3
0
2
4
6
8
10
FREQUENCY
(GHz)
Diode Chip
50Ω
50Ω
MLP 7100 Series
MLP 7100-7140 Series
12
14
16
18
High Power Equivalent Circuit
COIL for GROUND RETURN
∝
2
∝
2
50Ω
RS
RS
RS
50Ω
34
MicroMetrics, Inc.
136 Harvey Road, Building C, Londonderry, NH 03053
Voice: 603-641-3800, Fax: 603-641-3500, Internet: www.micrometrics.com, E-mail: serv@micrometrics.com
Control Devices:
MLP 7100 Series
Electrical Characteristics
Vb
TYP
(V)
20-45
-
-
45-75
-
-
120-180
-
-
15-30
-
30-60
-
Cj0
TYP
(pF)
0.20
0.50
0.70
0.20
0.50
0.70
0.20
0.60
0.80
0.12
0.20
0.12
0.20
Cj6
MAX
(pF)
0.15
0.30
0.50
0.15
0.30
0.50
0.15
0.30
0.50
0.10
0.15
0.10
0.15
Rs Typ
@ 10 mA
(Ω)
1.5
1.2
1.0
1.5
1.2
1.0
1.5
1.0
0.5
2.0
1.5
2.0
1.5
6
Rs Typ
@ 10 mA
(Ω)
5.0
4.5
4.0
4.0
3.5
3.0
3.5
3.0
3.0
4.0
3.0
4.0
4.0
6
Tl
TYP
(nS)
5
10
10
10
15
20
50
50
100
530
520
720
715
θ
p
TYP
(°C/W)
20
12
10
15
10
6
1.2
0.5
0.3
12
8
10
7
1
Maximum
Thermal Resistance
(°C/W)
100
80
55
80
60
40
40
20
15
0
0
0
0
Part
Number
MLP7100
MLP7101
MLP7102
MLP7110
MLP7111
MLP7112
MLP7120
MLP7121
MLP7122
MLP7130
MLP7131
MLP7140
MLP7141
Max. Peak
Pin
@1.0
µs
(dBm)
+50
+53
+56
+53
+56
+59
+60
+63
+66
+47
+50
+47
+50
Typical
2
Threshold
(dB)
+10
+10
+10
+15
+15
+15
+20
+20
+20
+7
+7
+12
+12
Leakage
Pout
TYP
(dBm)
+22
+24
+25
+27
+29
+31
+39
+41
+44
+19
+22
+24
+27
2
Insertion Loss
TYP
(dB)
0.1
0.2
0.2
0.1
0.2
0.2
0.1
0.2
0.2
0.1
0.1
0.1
0.1
3
CW
Pin
MAX (W)
21
31
41
32
42
52
55
10
15
2
3
3
4
4
Recovery
Time, Typ
(nS)
0
0
0
0
0
0
0
50
50
5
5
10
10
5
Part
Number
MLP7100
MLP7101
MLP7102
MLP7110
MLP7111
MLP7112
MLP7120
MLP7121
MLP7122
MLP7130
MLP7131
MLP7140
MLP7141
Notes:
1. Pulsed thermal impedance is given for a 1 µs pulse. CW thermal impedance presumes infinite heat sink.
2. Threshold input power produces 1 dB increase in insertion loss. Figure shows typical leakage power curves. Data taken
for 1.0 GHz.
3. Chip loss can be represented as a resistance in shunt with the junction capacitance. Rp is measured at 3 GHz, zero
Bias. Loss data shown are for 10 GHz for 0.15 and 0.30 pF chips, 5 GHz for 0.50 pF chips. Loss is measured at -10
dBm input.
4. Note that CW power and average power are not synonymous. Power ratings are computed in terms of a peak
junction temperature of 200°C, for short pulses, an average junction temperature of 125°C, and an ambient of 25°C.
Duty factor 0.001 assumed for maximum pulse power input. Figure shows power derating with temperature.
5. Recovery time is measured with ground return (less than 1.0 Ohm) to 1 dB excess loss, at 1 GHz.
6. Series resistance is measured at 500 MHz.
7. Limiter diodes with higher capacitance and/or higher breakdown voltage for very high power applications are
available on request.
Maximum Ratings
Operating Temperature
Maximum Leakage Current
-55°C to +150°C
0.5 mA at 88% of minimum rated breakdown
MicroMetrics, Inc.
136 Harvey Road, Building C, Londonderry, NH 03053
Voice: 603-641-3800, Fax: 603-641-3500, Internet: www.micrometrics.com, E-mail: serv@micrometrics.com
35
Control Devices
