T56F
TO-56 Ultra Flat Window Package
FEATURES
Differential Output TIA
3.3V Operation
Automatic Gain Control
Integrated 850nm MSM Detector & TIA
TO-56 Ultra Flat-Window Hermetic
Package
High Reliability
APPLICATIONS
2x Fibre Channel (2.125 Gb/s)
AMT8302
2.125 Gb/s Integrated 850nm MSM-TIA
Preliminary Data Sheet - Rev 0
US Patents: 5047728, 5646573
Charge
Pump
7.5 GHz
Osc
AGC
OUT
OUT
V
DD
3
1
4
2
P
IN
Figure 1: AMT8302 Equivalent Circuit
Product Description
The ANADIGICS AMT8302 is a 3.3V monolithically
integrated Metal-Semiconductor-Metal (MSM)
photodetector and transimpedance amplifier (TIA)
used to convert an 850nm input optical signal into a
differential output voltage, and is manufactured in
ANADIGICS 6 GaAs wafer fabrication facility. The
integrated MSM and TIA receiver maximizes the
receiver performance by minimizing the
photodetector input parasitics to the TIA and
internally biasing the photodetector to achieve high
sensitivity, bandwidth and overload performance. As
an integrated product the reliability is inherently
better than a discrete solution, and both the MSM-TIA
integrated circuit and TO56 flat window packaged
receiver pass stringent reliability requirements.
These products are readily designed into
receiversand transceivers for 2X Fibre Channel
applications.
2
AMT8302
Preliminary Data Sheet - Revision 0
03/01
Table 1: Absolute Maximum Ratings
Table 3: Package PIN Description
V
D
D
V
0
.
6
P
N
I
m
B
d
5
+
T
S
C
5
2
1
o
t
C
5
6
-
.
p
m
e
T
e
g
a
r
o
t
S
Table 2: Electrical Characteristics
n
i
P
n
o
it
p
i
r
c
s
e
D
t
n
e
m
m
o
C
1
V
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D
e
g
a
tl
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V
y
l
p
p
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-
s
tl
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3
.
3
+
2
V
T
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O
)
d
e
tr
e
v
n
I(
e
g
a
tl
o
V
t
u
p
t
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T
-
t
u
p
n
i
l
a
c
it
p
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ti
w
'
0
'
l
a
c
i
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3
d
n
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)
d
e
tr
e
v
n
I-
n
o
N
(
e
g
a
tl
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t
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p
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it
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'
1
'
l
a
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o
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s
(1) Measured at 14 dBm optical input power with output connected into R
L
= 100W (differential)
(2) Measured at 10
-10
BER with a 2
7
-1 PRBS at 2.125 Gb/s
(3) Measured with a 2
7
-1 PRBS at 2.125 Gb/s, an input optical power of -3dBm and
R
L
= 100 W (differential)
(4) 6 about the center eye crossing
l
W
R
E
T
E
M
A
R
A
P
N
I
M
P
Y
T
X
A
M
T
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)
(
h
t
g
n
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l
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v
a
W
0
7
7
0
5
8
0
6
8
m
n
r
e
t
e
m
a
i
D
r
o
t
c
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t
e
D
-
0
0
1
-
m
y
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R
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a
it
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ff
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ll
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)
1
(
)
z
H
M
0
5
@
(
0
0
0
1
-
-
W
/
V
h
t
d
i
w
d
n
a
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)
1
(
0
0
4
1
0
0
9
1
-
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H
M
ff
o
t
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C
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w
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3
z
H
k
e
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n
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t
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t
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-
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a
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v
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l
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)
2
(
0
-
-
m
B
d
y
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v
it
i
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a
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it
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)
2
(
9
1
-
-
-
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it
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)
3
(
-
0
5
7
-
V
m
T
E
S
I
R
T
d
n
a
L
L
A
F
)
%
0
8
-
0
2
(
)
3
(
-
0
4
1
-
s
p
n
o
it
r
o
t
s
i
D
e
l
c
y
C
y
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u
D
)
3
(
-
5
-
%
r
e
tt
i
J
l
a
t
o
T
)
4
(
,)
3
(
-
0
5
-
s
p
t
n
e
rr
u
C
y
l
p
p
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S
-
5
3
5
5
A
m
e
g
n
a
R
e
g
a
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o
V
g
n
it
a
r
e
p
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0
.
3
+
3
.
3
+
6
.
3
+
s
tl
o
V
e
g
n
a
R
e
r
u
t
a
r
e
p
m
e
T
e
s
a
C
g
n
it
a
r
e
p
O
0
-
0
8
C
3
AMT8302
Preliminary Data Sheet - Revision 0
03/01
Figure 2: Eye Diagram with an Optical Input Power of -18dBm
Figure 3: Eye Diagram with an Optical Input Power of -8.0dBm
Figure 4: Eye Diagram with an Optical Input Power of 0dBm
10mV/Div 100ps/Div
60mV/Div. 100ps/Div
150mV/Div. 100ps/Div
4
AMT8302
Preliminary Data Sheet - Revision 0
03/01
Figure 5: Supply Current vs. Temperature
Figure 6: Bandwidth vs. Temperature
Figure 7: Differential Responsivity vs.
Temperature
Figure 8: Sensitivity vs. Temperature
25.0
30.0
35.0
40.0
45.0
50.0
0
20
40
60
80
100
Case Temperature (C)
Suppl
y C
u
r
r
ent
(
m
A)
3V
3.3V
3.6V
1000
1200
1400
1600
1800
2000
2200
2400
0
20
40
60
80
100
Case Temperature (C)
Bandw
i
d
t
h
(
M
H
z
)
3V
3.3V
3.6V
900
1000
1100
1200
1300
1400
1500
0
20
40
60
80
100
Case Temperature (C)
D
i
f
f
e
r
ent
i
a
l
R
e
sponsi
v
i
t
y (
V
/
W
)
3V
3.3V
3.6V
-22.00
-21.50
-21.00
-20.50
-20.00
-19.50
-19.00
-18.50
-18.00
0
20
40
60
80
100
Case Temperature (C)
Se
n
s
it
iv
it
y
(
d
Bm
)
3V
3.3V
3.6V
5
AMT8302
Preliminary Data Sheet - Revision 0
03/01
Lightwave
Analyzer
HP 8702D
Laser
Optical Attenuator
DUT Test
Fixture
Power
Supply
Extinction
Ratio= 3dB
Figure 9: Test Setup for Frequency Response
Laser
Optical
Attenuator
DUT Test
Fixture
Power
Supply
Pulse Pattern
Generator
Limiting
Amplifier
Error
Detector
Hybrid
Coupler
Extinction
Ratio = 9dB
BERT
25 dB Gain
Figure 10: Test Setup for Sensitivity
Pulse Pattern
Generator
Laser
Optical
Attenuator
DUT Test
Fixture
Power
Supply
Digital
Communication
Analyzer HP83480A
Extinction
Ratio = 9dB
Figure 11: Test Setup for Eye Measurements
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