SRX03-APD

High Sensitivity OC-3/STM-1 APD
Receivers
SRX03-APD
Product Description
The SRX03-APD is a high sensitivity receiver module designed to exceed the SONET/SDH optical interface requirements at OC-3/STM-1
(156Mb/s) data rate. Highly reliable InGaAs/InP avalanche photodiode
(APD) is used to cover the entire long wavelength range from 1100nm
to 1600nm.
The receivers feature a low noise GaAs transimpedance IC with AGC capability to provide an extremely wide dynamic range and high sensitivity. The APD bias voltage is temperature compensated to ensure stable
operation over the entire operating temperature range. A signal detect
function which indicates loss of optical input is provided. A differential
optical power monitor output is also available.
The SRX03-APD receivers require only a single +5V supply. The data interfaces are differential PECL. The signal detect outputs can be either
PECL or TTL interface.
The SRX03-APD receivers can operate over an operating case temperature range of 0°C to +70°C or -40°C to +85°C. The module is housed
in a 24-pin dual-in-line metal package with a single mode fiber pigtail,
which is terminated with ST, FC or SC connector.
Features
 Exceeds SONET/SDH OC-03/STM-1 Long Reach
Specifications
 Optical Power Monitor Outputs
Related OC-3/STM-1 transmitters & receivers
STX-03: 20-pin laser transmitter
 - 40°C to +85°C Operating Temperature Option
SRX-03: 20-pin receiver without clock recovery (PECL SIGNAL DETECT)
 24-pin DIP Metal Package
SRC-03: 20-pin receiver with clock recovery (TTL SIGNAL DETECT)
 ST, FC or SC-connectorized Fiber Pigtail
SRC-03-S: 24-pin receiver with clock recovery (ECL/PECL SIGNAL DETECT)
 Differential PECL Data Outputs
 Differential PECL or TTL Signal Detect Output
Option
 Single +5 V Power Supply
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Case Temperature
Operating & Storage Humidity
Supply Voltage
Maximum Input Optical Power
Lead Soldering Temperature & Time
“H” option
“I” option
Symbol
Minimum
Maximum
Units
TST
- 40
+ 85
°C
0
+ 70
- 40
+ 85
-
-
85
%
VCC
0
+ 6.0
V
Pin, max
-
- 5.0
dBm
-
-
TOP
°C
260°C, 10 sec
R4.2008.04.30
Oplink Communications,
Inc.
SRX03-APD
Receiver Performance Characteristics (Over Operating Case Temperature, VCC = 4.75 to 5.25V)
All parameters guaranteed only at typical data rate
Parameter
Symbol
Minimum
Typical
Maximum
Units
B
-
156
-
Mb/s
- 41.0
- 43.0
-
- 42.0
- 44.0
-
Pmax
- 8.0
- 3.0
-
Increasing Light Input
Psd+
-
-
- 42.0
Decreasing Light Input
Psd-
- 55.0
-
-
Signal Detect Hysteresis
-
-
0.5
-
dB
Wavelength of Operation
λ
1100
-
1600
nm
VPM
-
30
-
mV/µW
Operating Data Rate
1
Receiver Sensitivity
(10-10 BER) 2
Temperature Option “I”
Pmin
Temperature Option “H”
Maximum Input Optical Power (10-10 BER) 2
Signal Detect Thresholds
Optical Power Monitor Differential Voltage (at 25°C)
dBm
dBm
dBm
Data rate ranges from 10Mb/s to 200Mb/s. However, some degradation may be incurred in overall performance.
2
Specified in average optical input power and measured at 1310nm wavelength with 223-1 PRBS at 156Mb/s.
1
Receiver Electrical Interface (Over Operating Case Temperature, VCC = 4.75 to 5.25V)
Parameter
Symbol
Minimum
Typical
Maximum
Units
Supply Voltage
VCC
4.75
5.0
5.25
V
Supply Current
ICC
-
120
180
mA
DATA Output HIGH Voltage 1
VOH
VCC - 1.150
-
VCC - 0.880
V
VOL
VCC - 1.830
-
VCC - 1.555
V
VOH
VCC - 1.150
-
VCC - 0.880
V
DATA Output LOW Voltage 1
SIGNAL DETECT HIGH Voltage (PECL option)
1
VOL
VCC - 1.830
-
VCC - 1.555
V
SIGNAL DETECT HIGH Voltage (TTL option)
VOH
2.7
-
VCC
V
SIGNAL DETECT LOW Voltage (TTL option)
VOL
0
-
0.5
V
VPD Output Voltage (maximum current 3mA)
VPD
- 90
- 60
- 20
V
SIGNAL DETECT LOW Voltage (PECL option)
1
1
With termination of 50Ω to VCC - 2V.
Interface Circuit
Pin Assignments (Top View)
+5V
1µH coil or
ferrite inductor
10
0.01
0.01
10
CASE
N/C
SIGNAL
DETECT+
SIGNAL
DETECT-
VPD
OUTPUT
VPD OUT
7,18,20
82
16
510 (Note 1)
17
3
1,24
GND
VPM+
VPM-
DATA+
8
510 (Note 1)
82
VCC
SRX
DATA+
DATA -
9
4,11,12,13
14,15,19
DATAN/C
GND
130
130
GND
Note 1: This resistor is for the PECL option only. It should be omitted for TTL option.
Note 2: Resistor values are in Ω, capacitor values are in µF.
Oplink Communications, Inc.
2
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
CASE
N/C
N/C
N/C
VCC
GND
VCC
SIGNAL DETECT SIGNAL DETECT +
GND
GND
GND
N/C: No internal
connection
All CASE pins should be grounded
R4.2008.04.30
SRX03-APD
Application Notes
The receiver converts the incident optical power to
a photocurrent via a high performance avalanche
photodiode (APD). The photocurrent can be monitored
via the differential voltage across the two VPM+ and
VPM- output pins. It is important to note that the
common mode voltage (i.e. DC voltages at PM+ and
VPM-) is high (-60V typical). The APD bias voltage is
temperature compensated to ensure stable operation
over the entire operating temperature range. The APD
bias voltage is also available as an output via the VPD
output. The maximum current that this output can
source is 1mA.
when an insufficient photocurrent is produced.
APD Bias
Supply
Both differential DATA+ and DATA- outputs (also
SIGNAL DETECT+ and SIGNAL DETECT- if the PECL
option is chosen) are open emitter PECL levels
requiring termination (50Ω to VCC - 2V or 510Ω to
GND is recommended). Both differential outputs
should be terminated in the same manner, even if
only one is used.
220Ω
VPM10kΩ
If the TTL option is chosen for the SIGNAL DETECT
outputs, no termination resistor should be used.
The power supply line should be wellfiltered. The
power supply should be bypassed by 0.01 or 0.1μF
ceramic chip placed as close to the receiver module
as possible.
The signal detect circuit monitors the level of the
incoming optical signal and generates a logic LOW signal
VPD
OUT
10kΩ
VPM+
APD
46335 Landing Parkway Fremont, CA 94538-6407 Tel: (510) 933-7200 Fax: (510) 933-7300 Email: [email protected]
Package Outline
The pigtail length from the
package edge is 1.0 meter typical.
Dimensions in inches [mm]
Default tolerances:
.xxx = ± .005”, .xx = ± .01”
Related Transmitter & Receiver Modules
STX-03: OC-3/STM-1 Transmitter (multi-sourced 20-pin DIP)
SRX-03: OC-3/STM-1 Receiver without Clock Recovery, ECL SIGNAL DETECT (multi-sourced 20-pin DIP)
SRC-03: OC-3/STM-1 Receiver with Clock Recovery (multi-sourced 20-pin DIP)
SRC-03-S: OC-3/STM-1 Receiver with Clock Recovery (24-pin DIP, compatible with Sumitomo SDT8701-RD)
Ordering Information
SRX
8
Supply Voltage
RX only 5V= 8
0
3
Receivers
X
R
2
0
0
0
Wavelength Range
Temperature Range
1100~1600nm APD
-40 ~85˚C= I
0~70˚C= H
Connector Type &
Option
Pigtail FC, SD-TTL= PA
Pigtail ST, SD-TTL= PB
Pigtail SC, SD-TTL= P5
Pigtail FC, SD-PECL= PC
Pigtail ST, SD-PECL= PD
Pigtail SC, SD-PECL= P4
Oplink Communications, Inc. reserves the right to make changes in equipment design or specifications without notice. Information supplied by Oplink Communications, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Oplink Communications, Inc. for its use nor for any infringements
of third parties, which may result from its use. No license is granted by implication or otherwise under any patent right of Oplink Communications, Inc.
R4. 2008.04.30
© 2008, Oplink Communications, Inc.
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