11/2002
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)
AMT8304
2.125 Gb/s Integrated 850nm MSM-TIA
PRELIMINARY DATA SHEET - Rev 1.1
T46F
TO-46 Ultra
Flat Window
Package
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
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.
Figure 1: Equivalent Circuit
US Patents: 5047728, 5646573
OUT
V
PIN
1
3
OUT
Charge
Pump
4.5 GHz
Osc
AGC
2
DD
4
T4TL
TO-46 Lens
Package with
Tabbed Header
T46L
TO-46
Lens
Package
AMT8304
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
2
Table 2: Absolute Maximum Ratings
Table 1: Package PIN Description
Figure 2: T46F/T46L/T4TL Pin Outline (Bottom View)
ELECTRICAL CHARACTERISTICS
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.
NIP NOITPIRCSED TNEMMOC
1V
TUO
egatloVtuptuOAIT-
)detrevnI-non(
lacitpohtiw'1'lacigoL
tupni
2V
DD
ylppuSevitisoP-
egatloV stloV3.3+
3V
TUO
egatloVtuptuOAIT-
)detrevnI(
lacitpohtiw'0'lacigoL
tupni
4dnuorGdednuorgsiesaC
V
DD
V0.6
P
NI
mBd5+
T
S
56-.pmeTegarotS°521otC°C
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
3
AMT8304
Table 3: Electrical Characteristics
Notes:
(1) Measured at –14 dBm optical input power with output connected into RL = 100Ω (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 Ω (differential)
(4) 6 about the center eye crossing
σ
RETEMARAP NIM PYT XAM TINU
(htgnelevaW λ)077058068mn
retemaiDrotceteD-001- mµ
laitnereffiDlangiSllamS
ytivisnopseR
)1(
)zHM05@( 0001--W/V
htdiwdnaB
)1(
00410091- zHM
ffotuCycneuqerFwoL--003zHK
ecnatsiseRtuptuO-04-
daolrevOlacitpO
)2(
0- - mBd
ytivitisneSlacitpO
)2(
91--- mBd
egatloVtuptuOlaitnereffiD
)3(
-057- Vm
T
ESIR
Tdna
LLAF
)%08-02(
)3(
-041- sp
noitrotsiDelcyCytuD
)3(
-5- %
rettiJlatoT
)4(,)3(
-05- sp
tnerruCylppuS-5355Am
egnaRegatloVgnitarepO0.3+3.3+6.3+stloV
egnaRerutarepmeTesaCgnitarepO0-08°C
AMT8304
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
4
Figure 3: Eye Diagram with an Optical Input Power of –19dBm (with a 4GHz LPF)
Figure 4: Eye Diagram with an Optical Input Power of –9.0dBm
Figure 5: Eye Diagram with an Optical Input Power of 0dBm
PERFORMANCE DATA
10mV/Div 100
p
s/Div
50mV/Div. 100
p
s/Div
150mV/Div. 100
p
s/Div
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
5
AMT8304
Figure 6: Supply Current vs. Temperature Figure 7: Bandwidth vs. Temperature
Figure 8: Differential Responsivity vs.
Temperature
Figure 9: Sensitivity vs. Temperature
25.0
30.0
35.0
40.0
45.0
50.0
0 20406080100
Case Temperature (C)
Supply Current (mA)
3V
3.3V
3.6V
1000
1200
1400
1600
1800
2000
2200
2400
0 20406080100
Case Temperature (C)
Bandwidth (MHz)
3V
3.3V
3.6V
900
1000
1100
1200
1300
1400
1500
0 20406080100
Case Temperature (C)
Differential Responsivity (V/W)
3V
3.3V
3.6V
-22.0
-21.5
-21.0
-20.5
-20.0
-19.5
-19.0
-18.5
-18.0
0 20406080100
Case Temperature (C)
Sensitivity (dBm)
3V
3.3V
3.6V
AMT8304
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
6
Lightwave
Analyzer
HP 8702D
Laser Optical Attenuator DUT Test
Fixture
Power
Supply
Extinction
Ratio= 3dB
Figure 11: Test Setup for Frequency Response
Laser Optical
Attenuator
DUT Test
Fixture
Power
Supply
Pulse Pattern
Generator
Limiting
Amplifier
Error
Detector
Hybrid
Coupler
Extinction
Ratio = 9dB
BERT
25 dB Gain
Figure 12: Test Setup for Sensitivity
Pulse Pattern
Generator
Laser
Optical
Attenuator
DUT Test
Fixture
Power
Supply
Digital
Communication
Analyzer HP83480A
Extinction
Ratio = 9dB
Figure 13: Test Setup for Eye Measurements
MEASUREMENT METHODS
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
7
AMT8304
Figure 14: Application Schematic
APPLICATION INFORMATION
V
OUT
V
OUT
DUT
0.1 uF
0.1uF
0.1uF
V
DD
Figure 13: DUT Test Fixture Schematic
CF is an optional single pole noise filter
1
2πfcR
fc is the desired cutoff frequency
R = 50 Ω
RO is required with high input resistance limiting amplifiers
RO = 100 Ω
CF=
V
R0
Charge
Pump
7.5 GHz
OSC
DD
OUT
OUT
AGC
4
C
F
0.1uF
0.1uF
LIMITING
AMPLIFIER
0.1uF
2
3
1
AMT8304
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
8
Figure 15: T46F Package Outline Diagram
PACKAGE OUTLINE
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
9
AMT8304
Figure 16: T46L Package Outline Diagram
AMT8304
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
10
Figure 17: T4TL Package Outline Diagram
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
11
AMT8304
NOTES
AMT8304
PRELIMINARY DATA SHEET - Rev 1.1
11/2002
12
ORDERING INFORMATION
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.
IMPORTANT NOTICE
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
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.
REBMUNREDRO EGAKCAP
NOITPO NOITPIRSEDEGAKCAP
F64T4038TMAF64-OTegakcaPwodniWtalFartlU
L64T4038TMAL64-OTegakcaPsneL
LT4T4038TMAL64-OTredaeHdebbaThtiwegakcaPsneL
