ANADIGICS AMT8100T46L

AMT8100
1.25 Gb/s Integrated 850 nm MSM-TIA
Data Sheet - Rev1
FEATURES
·
1.25 Gb/s Differential Output TIA
·
5.0V Operation
·
Automatic Gain Control
·
850nm Photodetector with 100 mm2
Active Area
·
Integrated MSM Detector & TIA
·
TO46 Lens Package
APPLICATIONS
·
·
T46L
TO-46L Lens Package
Gigabit Ethernet (1.25 Gb/s)
Fiber Channel (1.0625 Gb/s)
Product Description
The ANADIGICS AMT8100 is a 5V 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 TO46 lens packaged
receiver pass stringent reliability requirements.
These products are readily designed into receivers
and transceivers for Gigabit Ethernet and Fibre
Channel applications.
Figure 1: AMT8100T46L Equivalent Circuit
V DD
2
4K
OUT
1
3
OUT
AGC
US Patents: 5047728, 5646573
PIN
4
AMT8100
Table 1: Absolute Maximum Ratings
V DD
7.0 V
PIN
+ 5 dB m
TS
Storage Temp. - 65 °C to 125 °C
Table 2: Electrical Characteristics
PAR AMETER
MIN
TYP
MAX
Wavelength (l )
770
850
860
nm
-
100 x 100
-
µm2
Small Si gnal D i fferenti al Responsi vi ty (1)
(@ 50 MHz)
1000
-
-
V/W
Bandwi dth (1)
800
-
1500
MHz
-
300
1000
kHz
25
40
60
Ohm
-
dB m
D etector Acti ve Area
Low Frequency C utoff
Output Resi stance
Opti cal Overload (2)
0
-
Opti cal Sensi ti vi ty (3)
-20
- 21
dB m
-
650
-
mV
TRISE & TFALL (20 - 80%) (4), (5)
-
260
-
ps
D uty C ycle D i storti on (4), (6)
-
6
10
%
RMS Ji tter (4), (6), (7)
-
20
-
ps
Total Ji tter (pk-pk) (4), (6), (8)
-
100
-
ps
mA
D i fferenti al Output Voltage
(4), (5)
Supply C urrent
Operati ng Voltage Range
Operati ng Ambi ent Temperature Range
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
-
-
50
4.5
5.0
5.5
V
0
-
70
°C
Measured at –14 dBm optical input power with output connected into RL = 100W
(differential)
Measured at 10-12 BER with a 27-1 PRBS at 1.25 GB/s
-10
7
Measured at 10 BER with a 2 -1 PRBS at 1.25 Gb/s.
Input optical power = -3 dBm, RL = 100 W (differential).
Measured with a 625 MHz, 50% duty cycle square wave.
Measured with a 1.25 Gb/s, 27-1 PRBS.
1s about the center eye crossing.
6s about the center eye crossing.
Table 3: Package Pin Description
P IN
2
U N IT
D E S C R IP TION
C OMME N T
1
V OUT - TIA Output Voltage (Non-i nverted)
Logi cal '1' wi th opti cal i nput
2
V DD - P osi ti ve S upply Voltage
+5 Volts
3
V OUT - TIA Output Voltage (Inverted)
Logi cal '0' wi th opti cal i nput
4
Ground
C ase i s grounded
Data Sheet - Revision 1
03/01
AMT8100
Figure 3: Eye Diagram with an Optical Input Power
of –1.0dB
Figure 2: Eye Diagram with an Optical Input Power
of –17dBm
10mV/Div
200ps/Div
150mV/Div
Figure 4: Supply Current vs. Temperature
50.0
Figure 5: Bandwidth vs. Temperature
1600.0
4.5V
4.5V
5.0V
45.0
5.0V
5.5V
1400.0
Bandwidth (MHz)
Supply Current (mA)
200ps/Div
40.0
35.0
30.0
5.5V
1200.0
1000.0
800.0
25.0
20.0
600.0
0
20
40
60
80
100
0
20
40
60
80
Figure 7: Sensitivity vs. Temperature
Figure 6: Differential Responsvity vs. Temperature
-20.0
1600.0
4.5V
4.5V
-20.5
5.0V
5.0V
5.5V
5.5V
-21.0
Sensitivity (dBm)
Differential Responsivity (V/W)
100
Ambient Temperature (C)
Ambient Temperature (C)
1400.0
1200.0
-21.5
-22.0
-22.5
-23.0
-23.5
1000.0
-24.0
0
20
40
60
80
100
0
Ambient Temperature (C)
20
40
60
80
100
Ambient Temperature (C)
Data Sheet - Revision 1
03/01
3
AMT8100
Figure 8: Test Setup for Frequency Response
Lightwave
Analyzer
HP 8702D
Laser
DUT Test
Fixture
Optical Attenuator
Power
Supply
Extinction
Ratio= 3dB
Figure 9: Test Setup for Sensitivity
BERT
Pulse Pattern
Generator
Error
Detector
Hybrid
Coupler
Limiting
Amplifier
Optical
Attenuator
Laser
DUT Test
Fixture
Extinction
Ratio = 9dB
Power
Supply
Figure 10: Test Setup for Eye Measurements
Digital
Communication
Analyzer HP83480A
Pulse Pattern
Generator
Laser
Optical
Attenuator
DUT Test
Fixture
Extinction
Ratio = 9dB
Power
Supply
4
Data Sheet - Revision 1
03/01
25 dB Gain
AMT8100
Figure 11: DUT Test Fixture Schematic
VDD
0.1uF
DUT
VOUT
V OUT
0.1 uF
0.1uF
Figure 12: Application Schematic
VDD
0.1uF
2
4K
OUT
1
CF
OUT
3
AGC
0.1uF
RO
0.1uF
LIMITING
AMPLIFIER
4
CF is an optional single pole noise filter
CF =
1
2π fcR
fc is the desired cutoff frequency
R = 50 W
RO is required with high input resistance limiting amplifiers
RO = 100 W
Data Sheet - Revision 1
03/01
5
AMT8100
Figure 13: Evaluation Board Schematic
VDD
0.1uF
2
4K
OUT
OUT
AGC
4
Figure 14: Evaluation Board Layout
6
Data Sheet - Revision 1
03/01
1
0.1uF
3 0.1uF
VOUT
VOUT
AMT8100
Figure 15: T46L Package Outline Diagram
Data Sheet - Revision 1
03/01
7
AMT8100
Ordering Information
Part N umber
AMT8100T46L
Package Option
TO-46L
Package D escription
Lens Package
ANADIGICS, Inc.
141 Mount Bethel Road
Warren, New Jersey 07059, U.S.A
Tel: +1 (908) 668-5000
Fax: +1 (908) 668-5132
http://www.anadigics.com
Mktg@anadigics.com
IMPORTANT NOTICE
ANADIGICS, Inc. reserves the right to make changes to its products or discontinue any product at any time without notice.
The Advanced Product data sheets and product specifications contained in this data sheet are subject to change prior to
a products formal introduction. The information in this data sheet has been carefully checked and is assumed to be reliable.
However, ANADIGICS assumes no responsibility for inaccuracies. ANADIGICS strongly urges customers to verify that the
information they are using is current before placing orders.
WARNING
ANADIGICS products are not intended for use in life support appliances, devices, or systems. Use of an ANADIGICS
product in any such application without written consent is prohibited.
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