True DC Output Option
The PT-12A is available with optional dual power supplies, which
enables adjustment and/or stabilization of the DC output to enable
accurate extinction ratio measurements.
Eye pattern taken at 12.5 Gb/s data rate
with -10 dBm optical input power.
PT-12A
PT-12A
Product Bulletin (Preliminary) • January 2005
• PIN/TIA receiver
• High data rate, up to 12.5 Gb/s
• High sensitivity, -20 dBm
• 1200–1650 nm wavelength range
• Compact 8-pin butterfly package
• SMA or GPO output connector
The PT-12A is a -18 dBm sensitivity,
single-output receiver module for OC-192/
STM-64 with FEC transmission system
receive applications including NRZ with
Super FEC up to 12.5 Gb/s. It couples a
high responsivity (1.0 A/W), back-
illuminated PIN photodiode, usable from
1200 nm to 1650 nm, with an internal
transimpedance gain stage of 475 V/A.
This combination produces a receiver with
a 10 GHz band-width and a conversion
gain of 475 V/W.
The single-coaxial output module is
available with either an SMA or GPO
output connector in a compact, 8-pin
butterfly package with single-mode fiber
input. The receiver meets Telcordia
GR-468 qualification standards.
Specifications Minimum Typical Maximum Units
Wavelength range 1200 1650 nm
Bandwidth (-3dB electrical) 9 10 GHz
Low frequency cutoff
1
DC kHz
Sensitivity
2
-20 -18 dBm
Overload 0 dBm
Group Delay (1 to 10 GHz) 25 40 ps
Responsivity @ 1550 nm 0.8 1.0 A/W
Conversion gain 400 475 V/W
Output Return Loss (0.1 to 8 GHz) -10 dB
Optical Return Loss -30 dB
Power dissipation .22 W
DC Electrical
Photodiode voltage +5 +8 +12 V
Amplifier voltage (V
POS
) +3.2 +3.3 +3.4 V
Amplifier voltage (V
NEG
) -2.1 -2.0 -1.9 V
Mechanical
Package type 8-pin butterfly with SMA or GPO
Operating temperature 0 +70 °C
Storage temperature -40 +85 °C
1 Output is DC coupled
2 10-10 BER, PRBS 223-1
Picometrix, LLC. • 2925 Boardwalk
Ann Arbor, MI • 48104
734-864-5600 • 734-998-3474 fax
www.picometrix.com
Application Notes
Electrostatic discharge (ESD) will cause permanent
damage to the product. Please avoid any ESD to the
input pins or output connector. Use standard ESD
protective equipment when handling this product.
Temperature and fiber restrictions are as follows:
Lead soldering: 250°C for no more than 10 seconds
Fiber feed-through tube: 120°C
Fiber pull force: 10 N
Fiber bending radius: 1 inch or less
Exceeding these conditions can cause permanent
damage to the device.
Quality Vision
As a leader in ultrafast optical receivers, Picometrix
is committed to providing the highest quality
ultrafast products on the market. This quality vision
commits us to continually improving our product
designs and manufacturing processes, in order to
ensure the highest level of customer satisfaction.
The company maintains a stringent quality control
program to ensure that all products meet or
surpass customer requirements.
.520
.100 TYP. .015±.003 TYP.
4X #2–56
CLEARANCE SLOT
(ø.095)
.500.354
.725
1.334
.060 .881
1.035
.251 .229
.407
Single-mode fiber
with 900µm buffer
(1 meter typical)
85
14
PT-12A
Pin Description
1 NC (or DC Mon
1
)
2V
PD
3V
NEG
4 GND (or OffsetVoltage Input
1
)
1 If ordered with true DC output option
Pin Description
5 GND
6V
POS
7NC
8NC
PT-12A Ordering Information
Base model PT-12A
Option format Option/Package/Fiber connector
Option Blank or TDC
Package options 8SMA or 8GPO
Fiber connector options FC or SC
Product Specifications
© 2005 Picometrix, LLC. All rights reserved. Specifications
and output data subject to change without notice.
PB-PT-12A-0105-A
