ANADIGICS AMT121302

AMT121302
1.25 Gb/s 1310/1550nm PIN – TIA
Data Sheet - Rev 0
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
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
T46L
TO-46 Lens
Package
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.
Figure 1: Block Diagram
VDD
2
4K
OUT
1
3
OUT
AGC
US Patents: 5047728, 5646573
PIN
Charge
Pump
4
6.5 GHz
OSC
AMT121302
Table 1: Absolute Maximum Ratings
V DD
7.0V
PIN
+5dBm
TS
Storage Temp. - 65 °C to 125 °C
Table 2: Electrical Characteristics
PAR AME TE R
MIN
Wavelength (l)
1270
D etector D i ameter
S mall S i gnal D i fferenti al (@ 50 MHz) Responsi vi ty
For T46F P ackage
For T46L P ackage
B andwi dth (1)
MAX
1560
2500
2000
3300
V /W
1000
1100
MHz
(1)
25
Output Offset Voltage
(2)
Opti cal S ensi ti vi ty (2)
For T46F P ackage
For T46L P ackage
nm
µm
800
Output Resi stance
U N IT
75
Low Frequency C utoff
Opti cal Overload
TYP
kHz
40
60
W
2.2
V
-3
0
dB m
-26
-25
-28
dB m
350
600
mV
160
260
ps
D uty C ycle D i storti on (3), (5)
3
6
%
RMS Ji tter
15
30
ps
90
150
ps
35
50
mA
+ 5.0
+ 5.5
D i fferenti al Output Voltage
TRISE & TFALL ( 20 - 80% )
(3), (4)
(3), (4)
(3), (5), (6)
Total Ji tter (pk-pk)
(3), (5), (7)
S upply C urrent
Operati ng Voltage Range
+ 4.5
Operati ng A mbi ent Temperature Range
1.
2.
3.
4.
5.
6.
7.
0
70
V
o
C
Measured at -17 dBm optical input power with a SMF and output connected
into RL = 100 W (differential).
Measured at 10 –10 BER with a 27-1 PRBS, 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
D escription
C omment
1
VOUT - TIA Output Voltage (non-Inverted)
Logi cal '1' wi th opti cal i nput
2
VDD - Posi ti ve Supply Voltage
+5 Volts
3
VOUT - TIA Output Voltage (Inverted)
Logi cal '0' wi th opti cal i nput
4
Ground
C ase i s grounded
2
Data Sheet - Revision 0
03/01
AMT121302
Figure 2: Frequency Response *
35
Amplitude (dB)
30
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 3: Eye Diagram with an Optical Input Power of -3.0dBm
100mV/Div
200ps/Div
Figure 4: Eye Diagram with an Optical Input Power of -17dBm
50mV/Div
200ps/Div
Data Sheet - Revision 0
03/01
3
AMT121302
Figure 5: Supply Current vs. Case Temperature
Figure 6: Bandwidth vs. Case Temperature
1160
45
1140
40
4.5V
5.0V
5.5V
30
Bandwidth (MHz)
Supply Current (mA)
1120
35
4.5V
5.0V
5.5V
1100
1080
25
1060
1040
20
0
10
20
30
40
50
60
70
80
0
90
10
20
30
40
50
60
70
80
90
Case Temperature (C)
Case Temperature (C)
Figure 7: Differential Responsivity vs. Temperature
Figure 8: Sensitivity vs. Case Temperature
-27.00
3750
-27.20
-27.40
-27.60
3250
4.5V
5.0V
5.5V
3000
Sensitivity (dBm)
Differential Responsivity (V/W)
3500
-27.80
4.5V
5.0V
5.5V
-28.00
-28.20
-28.40
2750
-28.60
-28.80
2500
0
10
20
30
40
50
60
70
80
90
0
10
4
20
30
40
50
Case Temperature (C)
Case Temperature (C)
Data Sheet - Revision 0
03/01
60
70
80
90
AMT121302
Figure 9: Test Setup for Frequency Response
Lightwave
Analyzer
HP 8702D
DUT Test
Fixture
Optical Attenuator
Laser
Power
Supply
Extinction
Ratio= 3dB
Figure 10: Test Setup for Sensitivity
BERT
Pulse Pattern
Generator
Error
Detector
Hybrid
Coupler
Limiting
Amplifier
Optical
Attenuator
Laser
25 dB Gain
DUT Test
Fixture
Extinction
Ratio = 9dB
Power
Supply
Figure 11: Test Setup for Eye Measurements
Digital
Communication
Analyzer HP83480A
Pulse Pattern
Generator
Laser
Optical
Attenuator
DUT Test
Fixture
Extinction
Ratio = 9dB
Power
Supply
Data Sheet - Revision 0
03/01
5
AMT121302
Figure 12: DUT Test Fixture Schematic
VDD
0.1uF
DUT
VOUT
0.1uF
V OUT
0.1 uF
Figure 13: Application Schematic
V DD
0.1uF
2
4K
OUT
0.1uF
1
CF
OUT
3
RO
0.1uF
AGC
Charge
Pump
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
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Data Sheet - Revision 0
03/01
LIMITING
AMPLIFIER
AMT121302
Figure 14: Evaluation Board Schematic
VDD
0.1uF
2
4K
OUT
OUT
1
0.1uF
3 0.1uF
VOUT
VOUT
AGC
Charge
Pump
6.5 GHz
OSC
4
Figure 15: Evaluation Board Layout
Data Sheet - Revision 0
03/01
7
AMT121302
Figure 16: T46F Package Outline Diagram
TO46-1300nm DIFFERENTIAL FLAT WINDOW
SEATING PLANE
A
l
e
l2
SEE NOTE 1
e1
l1
#3
e1
ØD
ØD1
e
Øb
SY
MB
OL
A
MILLIMETERS
MIN.
2.85
Øb
0.41
0.51
0.30
0.48
5.46
5.61
4.60
4.75
BOTTOM VIEW
0.016 [0.41mm] MAX.
2.54 T.P.
e1
1.27 T.P.
h
0.36
0.46
0.53
l
12.70
13.20
13.70
l1
l2
h
#1
Øb 2
MAX.
3.00
Øb2
ØD
ØD1
e
8
NOM.
2.95
#4
#2
1.27
6.35
NOTES:
1. INTERNAL OPTICAL HEIGHT = 0.065±0.005[1.65±0.1]
2. BENT LEADS SHOULD NOT EXTNED OUTSIDE
DIAMETER (ØD) OF CAP OR TOUCH EACH OTHER.
3. ALL DIMENSIONS ARE REFENENCE ONLY-EXCEPT A, D & h.
Data Sheet - Revision 0
03/01
AMT121302
Figure 17: T46L Package Outling Diagram
Data Sheet - Revision 0
03/01
9
AMT121302
Ordering Information
Part N umber
10
Package Option
Package D escription
AMT121302T46F
TO-46F
Ultra Flat Wi ndow Package
AMT121302T46L
TO-46L
Lens Package
Data Sheet - Revision 0
03/01
AMT121302
Notes
Data Sheet - Revision 0
03/01
11
AMT121302
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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