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Электронный компонент: F0321818M

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Features
+5 V single power supply
20 dB typical gain
2.0 GHz typical -3 dB cutoff frequency
On-chip matching to 50
55 mA typical operating current
Low-cost 18-lead MFP package
Differential input and output
Differential ECL compatible input
Applications
Post-amplifier of an optical receiver circuit
up to 2.5 Gb/s
Logic gate buffer to interface between analog circuit and logic circuit
Functional Description
The F0321818M is a stable GaAs integrated limiting amplifier for use in a post-amplifier
of an optical receiver circuit up to 2.5 Gb/s. The F0321818M typically specifies a small signal
gain of 20 dB (Rs=RL=50
) with a 3 dB-cutoff-frequency of 2.0 GHz. It features single +5 V
supply operation, excellent VSWR's of 1.1:1, and a typical dissipation current of 55 mA.
The F0321818M can be also used as interface circuits in sensing systems and measure-
ment instruments. Emitter coupled logic (ECL) or source coupled FET logic (SCFL) circuits
are the most popular IC's for high speed digital circuits; the F0321818M operating under a
differential ECL compatible input condition is the best choice as the interface IC to join ana-
log circuits to ECL circuits or conventional GaAs logic IC's.
Limiting Amplifier
F0321818M
2 GHz Bandwidth
01.08.28
F0321818M
2 GHz Limiting Amplifier
Absolute Maximum Ratings
T
a
=25
C, unless specified
Recommended Operating Conditions
V
SS
= GND
Electrical Characteristics
T
a
= 25
C, V
DD
= +5V, V
SS
= GND, unless specified
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Parameter
Symbol
Test Conditions
Value
Units
Min.
Typ.
Max.
Supply Current
Input Bias Point
Output bias Point
VSWR (IN, OUT)
Gain
-3dB High Frequency Cutoff
Maximum Output Swing (single output)
I
DD
V
IN
V
OUT
SWR
GV
Fc
Vom
Pin=-40dBm
Pin=-40dBm f=1MHz
Pin=-40dBm
RL=50
f=1MHz
Pin=-40dBm
RL=50
RL=50
-
-
-
-
18
1.8
0.4
55
1.5
3.5
1.1
20
2.0
0.6
70
-
-
1.8
-
-
0.8
mA
V
V
-
dB
GHz
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C
2 GHz Limiting Amplifier
F0321818M
Block Diagram
Pin Assignments (Top View)
Pin Descriptions
V
DD
V
SS
V
OUT-
V
OUT+
V
IN+
V
IN-
LPF-
LPF+
Amp.
Amp.
Output
Buffer
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
NOTE: Package bottom is Internally connected to V
SS
1
VSS Supply Voltage
2
VOUT- Output
3
VSS Supply Voltage
4
5
6
7
LPF - AC Ground
8
VIN- Input
9
10
VIN+ Input
11
LPF+ AC Ground
12
VSS Supply Voltage
13
VDD Supply Voltage
14
VDD Supply Voltage
15
16
VOUT+ Output
17
18
VSS Supply Voltage
VSS Supply Voltage
VSS Supply Voltage
VSS Supply Voltage
VSS Supply Voltage
VSS Supply Voltage
VSS Supply Voltage
F0321818M
2 GHz Limiting Amplifier
Test Circuits
*
*
50
50
1) AC Characteristics
F0321818M
LPF-
V
SS
V
IN-
V
OUT-
LPF+
V
DD
V
DD
V
IN+
V
OUT+
0.1
F
0.1
F
0.1
F
Pin =-40 dBm
2200
pF
Vector
Network
Analyzer
50
50
2) Limiting Characteristics
*
*
*
*
50
50
50
LPF-
V
SS
V
IN-
V
OUT-
LPF+
V
DD
V
DD
V
IN+
V
OUT+
0.1
F
0.1
F
0.1
F
2200
pF
Pulse
Pattern
Generator
Attenuator
Sampling
Oscilloscope
DATA
CLOCK
* DC BLOCK
(PICOSECIND PULSE LABS, MODEL 5501)
F0321818M
2 GHz Limiting Amplifier
F0321818M
Typical AC Characteristics
(1) Gain
T
a
=25
C, V
DD
=+5 V, V
SS
=GND, Pin =-40 dBm, RL =50
, 300 kHz-3 GHz
(2) Dependance of Gain and High Frequency Cutoff on Power Supply Variations
T
a
=25
C, V
DD
=-5 V, V
SS
=GND, Pin =-40 dBm, RL =50
, 300 kHz-3 GHz
19
20
21
22
23
Gain (dB)
High Frequency Cut-off (GHz)
4.5
5.0
5.5
V
DD
(V)
4.5
5.0
5.5
V
DD
(V)
2.10
2.12
2.14
2.16
2.18
2.20
1M
10M
100M
1G
Frequency (Hz)
0
9
18
27
(dB)