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AMT121302
1.25 Gb/s 1310/1550nm PIN TIA
Data Sheet - Rev 1
FEATURES
* * * * * * * 1.25 Gb/s Differential Output TIA 5.0V Operation Automatic Gain Control 75mm 1270-1560nm InGaAs Photodetector 1000 MHz Minimum Bandwidth -28dBm Typical Sensitivity TO-46 Ultra Flat-Window or Lens Package
APPLICATIONS
* * Gigabit Ethernet (1.250 Gb/s) Fibre channel (1.064 Gb/s)
T46F TO-46 Ultra Flat Window Package
T46L TO-46 Lens Package
PRODUCT DESCRIPTION
The ANADIGICS AMT121302, packaged in a TO46 flat window or lens can, is a 5V integrated photodetector and transimpedance amplifier (TIA) used to convert a long wavelength (1270-1560nm) input optical signal into a differential output voltage, and is manufactured in ANADIGICS 6 GaAs wafer fabrication facility. The TIA maximizes the
VDD 2
4K
receiver performance by providing a negative voltage to reverse bias the photodetector which allows the device to achieve high sensitivity and wide bandwidth. These products are readily designed into receivers and transceivers for Gigabit Ethernet and Fibre Channel applications.
OUT
1 3
OUT AGC
PIN
US Patents: 5047728, 5646573
Charge Pump
6.5 GHz OSC
4
Figure 1: Block Diagram
03/2001
AMT121302
Figure 2: T46F/T46L Pin Outline (Bottom View)
Table 1: Package PIN Description Pin 1 2 3 4 D escription VOUT - TIA Output Voltage (non-Inverted) VDD - Posi ti ve Supply Voltage VOUT - TIA Output Voltage (Inverted) Ground C omment Logi cal '1' wi th opti cal i nput +5 Volts Logi cal '0' wi th opti cal i nput C ase i s grounded
ELECTRICAL CHARACTERISTICS
Table 2: Absolute Maximum Ratings
V DD PIN TS 7.0V +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 1 03/2001
AMT121302 Table 3: Electrical Characteristics
PAR AMETER Wavelength ( l) D etector D i ameter Small Si gnal D i fferenti al (@ 50 MHz) Responsi vi ty (1) For T46F Package For T46L Package Bandwi dth (1) Low Frequency C utoff Output Resi stance Output Offset Voltage Opti cal Overload
(2)
MIN 1270
TYP
MAX 1560
U N IT nm m
75
2500 2000 1000
3300
V/W
1100 800
MHz kHz 60
25
40 2.2
W
V dB m
-3 -26 -25
(3), (4)
0 -28 350 160 3 15 90 35 600 260 6 30 150 50 + 5.5 70
Opti cal Sensi ti vi ty (2) For T46F Package For T46L Package D i fferenti al Output Voltage
dB m mV ps % ps ps mA V
o
TRISE & TFALL ( 20 - 80% ) (3), (4) D uty C ycle D i storti on (3), (5) RMS Ji tter (3), (5), (6) Total Ji tter (pk-pk) (3), (5), (7) Supply C urrent Operati ng Voltage Range Operati ng Ambi ent Temperature Range + 4.5 0
+ 5.0
C
Notes: 1. Measured at -17 dBm optical input power with a SMF and output connected into RL = 100 W (differential). 2. Measured at 10 10 BER with a 27-1 PRBS, 1.25 Gb/s. 3. Input optical power = -3 dBm, RL = 100 W (differential). 4. Measured with a 625 MHz, 50% duty cycle square wave. 5. Measured with a 1.25 Gb/s, 27-1 PRBS. 6. 1s about the center eye crossing. 7. 6s about the center eye crossing.
Data Sheet - Rev 1 03/2001
3
AMT121302
PERFORMANCE DATA
Figure 3: Frequency Response *
35 30 Amplitude (dB) 25 20 15 10 5 0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) * Calibrated with an optical reference receiver with a gain of 21.62 dB at 50 MHz and a responsively of 11.77462 A/W.
Figure 4: Eye Diagram with an Optical Input Power of -3.0dBm
100mV/Div
200ps/Div
Figure 5: Eye Diagram with an Optical Input Power of -17dBm
50mV/Div
200ps/Div
4
Data Sheet - Rev 1 03/2001
AMT121302
Figure 6: Supply Current vs. Case Temperature
45
1160
Figure 7: Bandwidth vs. Case Temperature
1140
40
1120
Supply Current (mA)
35
4.5V 5.0V 5.5V
Bandwidth (MHz)
1100
4.5V 5.0V 5.5V
30
1080
25
1060
20 0 10 20 30 40 50 60 70 80 90 Case Temperature (C)
1040 0 10 20 30 40 50 60 70 80 90 Case Temperature (C)
Figure 8: Differential Responsivity vs. Temperature
3750
Figure 9: Sensitivity vs. Case Temperature
-27.00
-27.20
3500
-27.40
Differential Responsivity (V/W)
-27.60
4.5V 5.0V 5.5V
Sensitivity (dBm)
3250
-27.80
3000
-28.00
4.5V 5.0V 5.5V
-28.20
2750
-28.40
-28.60
2500 0 10 20 30 40 50 60 70 80 90
-28.80 0 10 20 30 40 50 60 70 80 90 Case Temperature (C)
Case Temperature (C)
Data Sheet - Rev 1 03/2001
5
AMT121302
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 1 03/2001
AMT121302
VDD
0.1uF
VOUT 0.1uF
DUT 0.1 uF
VOUT
Figure 13: DUT Test Fixture Schematic
APPLICATION INFORMATION
VDD 0.1uF 2
4K OUT
1 CF 3
0.1uF RO 0.1uF LIMITING AMPLIFIER
OUT AGC
Charge Pump
6.5 GHz OSC
4
Figure 14: Application Schematic
CF is an optional single pole noise filter
CF =
1 2 fcR
fc is the desired cutoff frequency R = 50 W RO is required with high input resistance limiting amplifiers RO = 100 W
Data Sheet - Rev 1 03/2001
7
AMT121302
VDD 0.1uF 2
4K OUT
1
0.1uF
VOUT VOUT
OUT AGC
3 0.1uF
Charge Pump
6.5 GHz OSC
4
Figure 15: Evaluation Board Schematic
Figure 16: Evaluation Board Layout
8
Data Sheet - Rev 1 03/2001
AMT121302
PACKAGE OUTLINE
TO46-1300nm DIFFERENTIAL FLAT WINDOW
SEATING PLANE A SEE NOTE 1 l1 l2 e1 #3 l e
e1 OD OD 1 e #2
#4
Ob
SY MB OL
#1
A Ob Ob2 OD OD1 e e1 h l l1 l2
MIN. 2.85 0.41 0.30 5.46 4.60
MILLIMETERS
NOM. 2.95
h
Ob 2 BOTTOM VIEW 0.016 [0.41mm] MAX.
MAX. 3.00 0.51 0.48 5.61 4.75
2.54 T.P. 1.27 T.P. 0.36 12.70 6.35 0.46 13.20 0.53 13.70 1.27
NOTES: 1. INTERNAL OPTICAL HEIGHT = 0.0650.005[1.650.1] 2. BENT LEADS SHOULD NOT EXTNED OUTSIDE DIAMETER (OD) OF CAP OR TOUCH EACH OTHER. 3. ALL DIMENSIONS ARE REFENENCE ONLY-EXCEPT A, D & h.
Figure 17: T46F Package Outline Diagram
Data Sheet - Rev 1 03/2001
9
AMT121302
Figure 18: T46L Package Outling Diagram
10
Data Sheet - Rev 1 03/2001
AMT121302
NOTES
Data Sheet - Rev 1 03/2001
11
AMT121302 ORDERING INFORMATION
Part N umber AMT121302T46F AMT121302T46L
Package Option TO-46F TO-46L
Package D escription Ultra Flat Wi ndow Package 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 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 products 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.
Data Sheet - Rev 1 03-2001
12

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