AGERE R768

Advance Data Sheet
September 2000
R768-Type OC-768/STM-256
Lightweight Receiver
Features
The R768 Receiver is manufactured in a 16-pin, pigtailed surface-mount metal package with a single-ended V-connector.
■
High data rate capability, 40 Gbits/s
■
PIN photodetector
■
Fully operational through the L-band (1.6 µm)
wavelength range
■
Single-mode fiber pigtail with FC/PC optical connector
■
Operating case temperature range:
0 °C to 65 °C
■
Compact, butterfly package
Applications
■
Line terminal equipment
■
High-speed networks up to 40 Gbits/s
■
SONET OC-768 and SDH STM-256 telecommunications applications
■
Extended-reach datacom and telecom applications
■
Digital video
R768-Type OC-768/STM-256
Lightweight Receiver
Advance Data Sheet
September 2000
Description
Pin Information
Receiver Operation
Table 1. Pin Descriptions
Pin Number
Name
1
Not Used
2
GND
3
Alternate PIN Bias
4
GND
5
GND
The operating case temperature range for the receiver
is 0 °C to 65 °C.
6
GND
7
VADJUST (optional)
The receiver is manufactured in a compact, 16-pin surface-mount package with a single-mode optical fiber
pigtail. The fiber pigtail is internally beveled for low
return loss and is available with an FC-PC optical connector.
8
GND
9
GND
10
GND
11
GND
The received data is dc-coupled.
12
VCC
The receiver requires only a 6 V power supply for operation, plus an optional VADJUST from –1.0 V to +1.0 V
(see pin descriptions). The photodiode requires a separate bias voltage: for the PIN, a nominal reverse bias
of 4 V is required.
13
GND
14
PIN Bias
15
GND
16
NC
The R768 40 Gbits/s fiber-optic receiver consists of a
high-speed photodetector (PIN) and a wide-band linear
preamp in a pigtailed surface-mount metal package
with a single-ended V-connector. It is designed for use
in single-mode, high-speed telecommunication applications at the SONET OC-768 and the ITU-T SDH
STM-256 data rate of 42.5 Gbits/s.
2
Agere Systems Inc.
R768-Type OC-768/STM-256
Lightweight Receiver
Advance Data Sheet
September 2000
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations section of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Symbol
Min
Max
Unit
Positive Supply Voltage
VCC
5.0
7.0
V
Photodiode Forward Current*
IPD
—
1
mA
Maximum Reverse Bias
VB
—
5
V
Optical Input Power, PIN
PMAX
—
8
dBm
TC
0
65
°C
Tstg
–40
85
°C
Lead Soldering Temperature
—
—
250
°C
Lead Soldering Time
—
—
10
s
Operating Case Temperature
Storage Temperature
* Device is normally reverse biased. Forward biasing the photodiode can compromise device performance and reliability.
Optical Characteristics
Table 2. Optical Characteristics (TA = 25 °C)
Parameter
Symbol
Min
Typ
Max
Unit
λ
1.480
—
1.610
µm
Sensitivity, PIN
PLOW
—
–7
—
dBm
Maximum Optical Input Power, Average, PIN
PHIGH
—
3
—
dBm
—
–27
–30
—
dBm
ℜPIN
—
0.7
—
A/W
ID
—
0.5
—
µA
PDL
—
—
0.5
dB
Optical wavelength for Rated Sensitivity
Optical Return Loss
Responsivity of PIN, λ = 1.55 µm
Total Dark Current
Polarization-dependent Loss
Agere Systems Inc.
3
R768-Type OC-768/STM-256
Lightweight Receiver
Advance Data Sheet
September 2000
Electrical Characteristics
Table 3. Electrical Characteristics (TA = 25 °C)
Parameter
Symbol
Min
Typ
Max
Unit
VCC
VPIN
VADJ
5.5
3.5
–1.0
6.0
4.0
—
6.5
4.5
1.0
V
V
V
ICC
—
80
150
mA
Power Dissipation
PDISS
—
—
0.975
W
Conversion Gain
—
—
60
—
V/W
Average Equivalent Input Noise Spectral Density
—
—
—
50
pA/√Hz
Low Frequency Cutoff (–3 dB)
fL
—
100
—
kHz
BW
—
45
—
GHz
Rolloff (3 dB + 5 GHz)
—
—
–10
—
dB
Peaking
—
—
—
2
dB
Deviation from Linear Phase:
100 kHz—25 GHz
25 GHz—40 GHz
40 GHz—50 GHz
—
—
—
—
10
20
40
—
—
—
deg
deg
deg
Output Return Loss:
100 kHz—20 GHz
25 GHz—40 GHz
40 GHz—50 GHz
S22
—
—
—
—
—
—
–15
–10
–5
dB
dB
dB
dc Power Supply Voltages:
Positive Supply
PIN Bias
Optional VADJUST
Positive dc Power Supply Current
Bandwidth
4
Agere Systems Inc.
R768-Type OC-768/STM-256
Lightweight Receiver
Advance Data Sheet
September 2000
Outline Diagram
Dimensions are in millimeters.
21.440
16.590
3.890
1.270
2.375
0.508
PIN 8
PIN 1
C BORE 3.75 ∅ x 2.30 DP BOTH SIDES
(#4-40 TAP THROUGH ENGLISH)
1.330
20.300
15.910
13.480
PIN 9
PIN 16
11.540
29.470
58.400
20.350
14.510
6.600
2.50
9.880
6.380
6.630
CONNECTOR NOT SHOWN
1-1157(F)
Agere Systems Inc.
5
R768-Type OC-768/STM-256
Lightweight Receiver
Advance Data Sheet
September 2000
Ordering Information
Table 4. Ordering Information
Description
R768-Type OC-768/STM-256
Lightwave Receiver
Product Code
Photodiode
Connector
Comcode
R768PGAA
PIN
FC
108894635
R768PSAA
PIN
LC
108894643
R768PDAA
PIN
SC
108727041
R768PJAA
PIN
Test Ferrule
TBD
For additional information, contact your Agere Systems Account Manager or the following:
INTERNET:
http://www.agere.com
E-MAIL:
docmaster@agere.com
N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286
1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106)
ASIA:
Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F, Tower 2, The Gateway, Harbour City, Kowloon
Tel. (852) 3129-2000, FAX (852) 3129-2020
CHINA: (86) 21-5047-1212 (Shanghai), (86) 10-6522-5566 (Beijing), (86) 755-695-7224 (Shenzhen)
JAPAN: (81) 3-5421-1600 (Tokyo), KOREA: (82) 2-767-1850 (Seoul), SINGAPORE: (65) 778-8833, TAIWAN: (886) 2-2725-5858 (Taipei)
EUROPE:
Tel. (44) 7000 624624, FAX (44) 1344 488 045
Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liabi lity is assumed as a result of their use or application. ST is a
registered trademark of Agere Systems Inc.
Copyright © 2001 Agere Systems Inc.
All Rights Reserved
Printed in U.S.A.
September 2000
DS00-383OPTO-1