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AMT8304
2.125 Gb/s Integrated 850nm MSM-TIA
DATA SHEET - Rev 2.0
FEATURES
* * * * * * Differential Output TIA 3.3V Operation Automatic Gain Control Integrated 850nm MSM Detector & TIA TO-46 Ultra Flat-Window or Lens Hermetic Package High Reliability
APPLICATIONS
* 2x Fibre Channel (2.125 Gb/s)
T46F TO-46 Ultra Flat Window Package
T4TL T46L TO-46 Lens TO-46 Package with Lens Package Tabbed Header
PRODUCT DESCRIPTION
The ANADIGICS AMT8304 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
VDD
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 TO-46 flat window and TO-46 lens packaged receiver pass stringent reliability requirements. These products are readily designed into receivers and transceivers for 2x Fibre Channel applications.
2
OUT
1 3
OUT AGC
US Patents: 5047728, 5646573
PIN
Charge Pump
4.5 GHz Osc
4
Figure 1: Equivalent Circuit
12/2003
AMT8304
Figure 2: T46F/T46L/T4TL Pin Outline (Bottom View) Table 1: Package PIN Description
PIN 1 DESCRIPTION COMMENT
VOUT - TIA Output Voltage Logical '1' with optical (non-Inverted) input VDD - Positive Supply Voltage +3.3 Volts
2
3 4
VOUT - TIA Output Voltage Logical '0' with optical (Inverted) input Ground Case is grounded
ELECTRICAL CHARACTERISTICS
Table 2: Absolute Maximum Ratings
VDD PIN TS
6.0V +5dBm 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.
2
DATA SHEET - Rev 2.0 12/2003
AMT8304 Table 3: Electrical Characteristics PARAMETER Wavelength () Detector Diameter Small Signal Differential Responsivity (1) (@ 50 MHz) Bandwidth (1) Low Frequency Cutoff Output Resistance Optical Overload (2) Optical Sensitivity (2) Differential Output Voltage (3) TRISE and TFALL (20-80%) Duty Cycle Distortion (3) Total Jitter
(3),(4) (3)
MIN 770 1000 1400 0 -19 +3.0 0
TYP 850 100 1900 40 750 140 5 50 35 +3.3 -
MAX 860 300 55 +3.6 80
UNIT nm m V/W MHz KHz dBm dBm mV ps % ps mA Volts C
Supply Current Operating Voltage Range Operating Case Temperature Range
Notes: (1) Measured at -14 dBm optical input power with output connected into RL = 100 (differential) (2) Measured at 10-10 BER with a 27-1 PRBS at 2.125 Gb/s (3) Measured with a 27-1 PRBS at 2.125 Gb/s, an input optical power of -3dBm and RL = 100 (differential) (4) 6 about the center eye crossing
DATA SHEET - Rev 2.0 12/2003
3
AMT8304
PERFORMANCE DATA
Figure 3: Eye Diagram with an Optical Input Power of -19dBm (with a 4GHz LPF)
10mV/Div
100ps/Div
Figure 4: Eye Diagram with an Optical Input Power of -9.0dBm
50mV/Div.
100ps/Div
Figure 5: Eye Diagram with an Optical Input Power of 0dBm
150mV/Div.
100ps/Div
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DATA SHEET - Rev 2.0 12/2003
AMT8304 Figure 6: Supply Current vs. Temperature
50.0
2400 2200
Figure 7: Bandwidth vs. Temperature
45.0
Supply Current (mA)
2000
40.0
Bandwidth (MHz)
1800
35.0
1600 1400
30.0
3V 3.3V 3.6V 0 10 20 30 40 50 60 70 80 90
1200 1000 0 20 40 60 80
3V 3.3V 3.6V 100
25.0
Case Temperature (C)
Case Temperature (C)
Figure 8: Differential Responsivity vs. Temperature
1500
-18.0 -18.5
Figure 9: Sensitivity vs. Temperature
1400
Differential Responsivity (V/W)
-19.0
Sensitivity (dBm)
3V 3.3V 3.6V 0 20 40 60 80 100
1300
-19.5 -20.0 -20.5 -21.0
1200
1100
1000
-21.5 -22.0 0 20 40 60 80
3V 3.3V 3.6V 100
900
Case Temperature (C)
Case Temperature (C)
DATA SHEET - Rev 2.0 12/2003
5
AMT8304
MEASUREMENT METHODS
Lightwave Analyzer HP 8702D
Laser
Optical Attenuator
DUT Test Fixture
Extinction Ratio= 3dB
Power Supply
Figure 10: Test Setup for Frequency Response
BERT
Pulse Pattern Generator
Error Detector
Hybrid Coupler
Limiting Amplifier
25 dB Gain
Laser
Optical Attenuator
DUT Test Fixture
Extinction Ratio = 9dB Power Supply
Figure 11: Test Setup for Sensitivity
Pulse Pattern Generator
Digital Communication Analyzer HP83480A
Laser
Optical Attenuator
DUT Test Fixture
Extinction Ratio = 9dB
Power Supply
Figure 12: Test Setup for Eye Measurements 6
DATA SHEET - Rev 2.0 12/2003
AMT8304
V DD
0.1uF
VOUT
0.1uF
DUT
0.1uF
VOUT
Figure 13: DUT Test Fixture Schematic
APPLICATION INFORMATION
V DD
0.1uF 2
OUT
1
0.1uF
OUT
3
CF
R0
0.1uF
LIMITING AMPLIFIER
AGC
Charge Pump
7.5 GHz OSC
4
Figure 14: Application Schematic
CF is an optional single pole noise filter 1 C = 2fcR
F
fc is the desired cutoff frequency R = 50 RO is required with high input resistance limiting amplifiers RO = 100
DATA SHEET - Rev 2.0 12/2003
7
AMT8304
PACKAGE OUTLINE
Figure 15: T46F Package Outline Diagram
8
DATA SHEET - Rev 2.0 12/2003
AMT8304
Figure 16: T46L Package Outline Diagram
DATA SHEET - Rev 2.0 12/2003
9
AMT8304
Figure 17: T4TL Package Outline Diagram
10
DATA SHEET - Rev 2.0 12/2003
AMT8304
NOTES
DATA SHEET - Rev 2.0 12/2003
11
PCS, KPCS CDMA 4mm x 4mm Power Amplifier Modules
ORDERING INFORMATION
PACKAGE OPTION TO-46F TO-46L TO-46L
ORDER NUMBER AMT8304T46F AMT8304T46L AMT8304T4TL
PACKAGE DESRIPTION Ultra Flat Window Package Lens Package Lens Package with Tabbed Header
ANADIGICS, Inc.
141 Mount Bethel Road Warren, New Jersey 07059, U.S.A. Tel: +1 (908) 668-5000 Fax: +1 (908) 668-5132 URL: http://www.anadigics.com E-mail: Mktg@anadigics.com 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.
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DATA SHEET - Rev 2.0 12/2003

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