ANADIGICS AMT128503T56F

AMT128503
1.25 Gb/s Integrated 850 nm MSM-TIA
Data Sheet - Rev. 0
FEATURES
·
1.25 Gb/s Differential Output TIA
·
3.3V Operation
·
Automatic Gain Control
·
850nm Photodetector with
100 mm x 100 mm Active Area
·
Integrated MSM detector & TIA
·
TO-46 Ultra Flat Window or Lens
Package
·
TO-56 Ultra Flat Window Package
APPLICATIONS
·
Gigabit Ethernet (1.250Gb/s)
·
Fibre Channel (1.0625 Gb/s)
TO-46F
Ultra Flat
Window
Package
PRODUCT DESCRIPTION
The ANADIGICS AMT128503 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
TO-46L
Lens
Package
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 flat window, TO46 lens
and TO56 flat window packaged receiver pass
stringent reliability requirements. These products
are readily designed into receivers and transceivers
for Gigabit Ethernet and Fibre Channel applications.
Figure 1: AMT128503 Equivalent Circuit
VDD
4K
VOUT
VOUT
AGC
US Patents: 5047728, 5646573
PIN
Charge
Pump
Ground
TO-56F
Ultra Flat
Window
Package
6.5 GHz
Osc
AMT128503
Table 1: Absolute Maximum Ratings
V DD
6.0 V
PIN
+ 5 dB m
TS
Storage Temp. - 65 °C to 125 °C
Table 2: Electrical Characteristics
PAR AMETER
MIN
TYP
MAX
U N IT
Wavelength (l)
770
850
860
nm
D etector Acti ve Area
Small Si gnal D i fferenti al Responsi vi ty (1)
(@ 50 MHz)
Bandwi dth(1)
100 x 100
1000
Output Resi stance
25
1500
MHz
300
1000
kHz
40
60
W
dB m
0
(2)
Opti cal Sensi ti vi ty (2)
-20
D i fferenti al Output Voltage
TRISE & TFALL (20 - 80%)
V/W
1000
Low Frequency C utoff
Opti cal Overload
µm
(3), (4)
- 22
dB m
700
mV
260
(3), (4)
D uty C ycle D i storti on (3), (5)
4
RMS Ji tter (3), (5), (6)
15
Total Ji tter (pk-pk) (3), (5), (7)
90
Supply C urrent
Operati ng Voltage Range
+ 3.0
+3.3
0
%
ps
ps
55
Operati ng Ambi ent Temperature Range
(1)
(2)
(3)
(4)
(5)
(6)
(7)
ps
10
mA
+3.6
V
70
°C
Measured at –14 dBm optical input power with output connected into RL = 100W (differential)
Measured at 10-10 BER with a 27-1 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
PIN
2
T46F/T46L D escription
T56F D escription
1
VOUT - TIA Output Voltage (non-i nverted)
Logi cal '1' wi th opti cal i nput
VD D - Posi ti ve Supply Voltage
2
VD D - Posi ti ve Supply Voltage
VOUT - TIA Output Voltage (i nverted)
Logi cal "1" wi th opti cal i nput
3
VOUT - TIA Output Voltage (i nverted)
Logi cal '0' wi th opti cal i nput
Ground (case i s grounded)
4
Ground (case i s grounded)
VOUT - TIA Output Voltage
(non-i nverted) Logi cal "1" wi th opti cal i nput
Data Sheet - Revision 0
03/01
AMT128503
Figure 3: Eye Diagram with an Optical Input
Power of -1.0dBm
Figure 2: Eye Diagram with an Optical Input
Power of -17dBm
15mV/Div
175mV/Div
200ps/Div
Figure 5: Bandwidth vs. Temperature
Figure 4: Supply Current vs Temperature
1600
3V
3.3V
3.6V
45.0
3V
3.3V
3.6V
1500
Bandwidth (MHz)
Supply Current (mA)
50.0
40.0
35.0
30.0
1400
1300
1200
1100
1000
900
25.0
0
20
40
60
80
0
100
20
40
60
80
100
Ambient Temperature (C)
Ambient Temperature (C)
Figure 7: Sensitivity vs Temperature
Figure 6: Differential Responsivity vs Temperature
-22.00
2000
3V
3.3V
3.6V
1800
-22.50
Sensitivity (dBm)
Differential Responsivity (V/W)
200ps/Div
-23.00
1600
-23.50
1400
-24.00
1200
3V
3.3V
3.6V
-24.50
1000
-25.00
0
20
40
60
80
100
0
Ambient Temperature (C)
20
40
60
80
100
Ambient Temperature (C)
Data Sheet - Revision 0
03/01
3
AMT128503
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 0
03/01
25 dB Gain
AMT128503
Figure 11: DUT Test Fixture Schematic
VDD
0.1uF
DUT
VOUT
0.1uF
V OUT
0.1 uF
Figure 12: Application Schematic
V
DD
0.1uF
2
4K
OUT
1
CF
3
OUT
AGC
Charge
Pump
0.1uF
RO
0.1uF
LIMITING
AMPLIFIER
6.5 GHz
OSC
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 0
03/01
5
AMT128503
Figure 13: Evaluation Board Schematic
VDD
0.1uF
2
4K
OUT
OUT
AGC
Charge
Pump
6.5 GHz
OSC
4
Figure 14: Evaluation Board Layout
6
Data Sheet - Revision 0
03/01
1
0.1uF
3 0.1uF
VOUT
VOUT
AMT128503
Figure 15: T46F Package Outline Diagram
Data Sheet - Revision 0
03/01
7
AMT128503
Figure 16: T46L Package Outline Diagram
8
Data Sheet - Revision 0
03/01
AMT128503
Figure 17: T56F Package Outline Diagram
Data Sheet - Revision 0
03/01
9
AMT128503
Ordering Information
Part N umber
10
Package Option
Package D escription
AMT128503T46F
TO-46F
Ultra Flat Wi ndow
AMT128503T46L
TO-46L
Lens
AMT128503T56F
TO-56F
Ultra Flat Wi ndow
Data Sheet - Revision 0
03/01
AMT128503
Notes
Data Sheet - Revision 0
03/01
11
AMT128503
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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