ANADIGICS AMT8504 1.25 gb/s integrated 850nm msm-tia Datasheet

AMT8504
1.25 Gb/s Integrated 850 nm MSM-TIA
PRELIMINARY DATA SHEET - Rev 1
FEATURES
·
·
·
·
·
·
·
·
Differential Output TIA
3.3V Operation
Automatic Gain Control
Integrated 850nm MSM detector & TIA
100 m m Detector Diameter
TO-46 Ultra Flat Window or Lens
Hermetic Package
High Reliability
-5 to +80°C Operating Temperature Range
APPLICATIONS
·
Gigabit Ethernet (1.250Gb/s)
·
Fibre Channel (1.0625 Gb/s)
TO-46L
Ball Lens
Package
TO-46F
Ultra Flat
Window
Package
PRODUCT DESCRIPTION
The ANADIGICS AMT8504 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 TO46 flat window 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.
V DD
2
OUT
1
3
OUT
AGC
US Patents: 5047728, 5646573
PIN
Charge
Pump
7.5 GHz
Osc
4
Figure 1: Equivalent Circuit
07/01
AMT8504
Figure 2: Pin Outline (Bottom View)
Table 1: Package Pin Description
PIN
2
D ESC R IPTION
C OMMEN T
1
VOUT - TIA Output Voltage (Non-i nverted)
Logi cal '1' wi th opti cal i nput
2
VDD - Posi ti ve Supply Voltage
+3.3 Volts
3
VOUT - TIA Output Voltage (Inverted)
Logi cal '0' wi th opti cal i nput
4
Ground
C ase i s grounded
PRELIMINARY DATA SHEET - Rev 1
07-01
AMT8504
ELECTRICAL CHARACTERISTICS
Table 2: Absolute Maximum Ratings
V DD
6.0 v
PIN
+ 5 dB m
TS
Storage Temp. - 65 °C to 125°C
Stresses in excess of the absolute ratings may
cause permanent damage. Functional operation is
not implied under these conditions. Exposure to
absolute ratings for extended periods of time may
adversely affect reliability.
Table 3: Electrical Characteristics
PAR AMETER
MIN
TYP
MAX
Wavelength (l )
770
850
860
nm
-
100
-
µm
1000
-
-
V/W
900
-
-
MHz
D etector D i ameter
Small Si gnal D i fferenti al Responsi vi ty (1)
(@ 50 MHz)
Bandwi dth(1)
U N IT
Low Frequency C utoff
-
-
300
kHz
Output Resi stance
-
40
-
Ohm
Opti cal Overload (2)
0
-
-
dB m
-20
- 22
-
dB m
-
1000
-
mV
Opti cal Sensi ti vi ty
(2)
D i fferenti al Output Voltage
TRISE & TFALL (20 - 80%)
(3)
-
260
-
ps
D uty C ycle D i storti on (3)
-
4
10
%
Total Ji tter (pk-pk)
-
80
120
ps
(3)
(3), (4)
Supply C urrent
Operati ng Voltage Range
Operati ng C ase Temperature Range
-
-
55
mA
+ 3.0
+3.3
+3.6
V
-5
-
80
°C
Notes:
(1) Measured at –14 dBm optical input power with output connected into RL = 100W
(differential)
(2) Measured at 10-10 BER with a 27-1 PRBS at 1.25 GB/s
7
(3) Measured with a 2 -1 PRBS at 1.25Gb/s, an input optical power of -3dBm and
RL=100 W (differential)
(4) 6s about the center eye crossing.
PRELIMINARY DATA SHEET - Rev 1
07-01
3
AMT8504
VDD
0.1uF
DUT
VOUT
0.1uF
V OUT
0.1 uF
Figure 3: DUT Test Fixture Schematic
4
PRELIMINARY DATA SHEET - Rev 1
07-01
AMT8504
PERFORMANCE DATA
Figure 4: Eye Diagram with an Optical Input Power Figure 5: Eye Diagram with an Optical Input Power
of -17dBm
of 0dBm
Figure 7: Bandwidth vs. Temperature
50.0
2000
45.0
1800
3.0V
40.0
35.0
30.0
3.0V
3.3V
25.0
Bandwidth (MHz)
Supply Current (mA)
Figure 6: Supply Current vs. Temperature
3.3V
3.6V
1600
1400
1200
3.6V
20.0
1000
0
20
40
60
80
100
0
20
Case Temperature (C)
60
80
100
Case Temperature (C)
Figure 8: Differential Responsivity vs. Temperature
2000
Figure 9: Sensitivity vs. Temperature
-20.00
1800
1600
1400
3.0V
1200
3.3V
Sensitivity (dBm)
Differential Responsivity (V/W)
40
-21.00
-22.00
-23.00
3.0V
-24.00
3.3V
3.6V
3.6V
1000
-25.00
0
20
40
60
80
100
0
20
Case Temperature (C)
PRELIMINARY DATA SHEET - Rev 1
07-01
40
60
80
100
Case Temperature (C)
5
AMT8504
MEASUREMENT METHODS
Lightwave
Analyzer
HP 8702D
Laser
DUT Test
Fixture
Optical Attenuator
Power
Supply
Extinction
Ratio= 3dB
Figure 10: Test Setup for Frequency Response
BERT
Pulse Pattern
Generator
Error
Detector
Hybrid
Coupler
Limiting
Amplifier
Optical
Attenuator
Laser
DUT Test
Fixture
Extinction
Ratio = 9dB
Power
Supply
Figure 11: Test Setup for Sensitivity
Digital
Communication
Analyzer HP83480A
Pulse Pattern
Generator
Laser
Optical
Attenuator
DUT Test
Fixture
Extinction
Ratio = 9dB
Power
Supply
Figure 12: Test Setup for Eye Measurements
6
PRELIMINARY DATA SHEET - Rev 1
07-01
25 dB Gain
AMT8504
APPLICATION INFORMATION
V
DD
0.1uF
2
OUT
1
CF
OUT
3
AGC
Charge
Pump
0.1uF
RO
0.1uF
LIMITING
AMPLIFIER
7.5 GHz
OSC
4
Figure 13: Application Schematic
CF is an optional single pole noise capacitor
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
PRELIMINARY DATA SHEET - Rev 1
07-01
7
AMT8504
VDD
0.1uF
2
OUT
OUT
AGC
Charge
Pump
7.5 GHz
OSC
4
Figure 14: Evaluation Board Schematic
Figure 15: Evaluation Board Layout
8
PRELIMINARY DATA SHEET - Rev 1
07-01
1
0.1uF
3 0.1uF
VOUT
VOUT
AMT8504
PACKAGE OUTLINE
Figure 16: T46F Package Outline Diagram
PRELIMINARY DATA SHEET - Rev 1
07-01
9
AMT8504
Figure 17: T46L Package Outline Diagram
10
PRELIMINARY DATA SHEET - Rev 1
07-01
AMT8504
NOTES
PRELIMINARY DATA SHEET - Rev 1
07-01
11
AMT8504
ORDERING INFORMATION
PAR T N U MB ER
PAC K AGE OPTION
PAC K AGE D ESC R IPTION
AMT8504T46F
TO-46F
Ultra Flat Wi ndow
AMT8504T46L
TO-46L
Lens
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
[email protected]
IMPORTANT NOTICE
ANADIGICS, Inc. reserves the right to make changes to its products or to discontinue any product at any time without
notice. The product specifications contained in Advanced Product Information sheets and Preliminary Data Sheets are
subject to change prior to a product’s formal introduction. Information in Data Sheets have been carefully checked and are
assumed to be reliable; however, ANADIGICS assumes no responsibilities 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.
PRELIMINARY DATA SHEET - Rev 1
07-01
12
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