gd16571 ETC-unknow, gd16571 Datasheet

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gd16571

Manufacturer Part Number
gd16571
Description
2.5 Gbit/s Retiming Laser Driver
Manufacturer
ETC-unknow
Datasheet
an Intel company
General Description
The GD16571 is a high performance low
power 2.5 Gbit/s Laser Driver with
optional on chip retiming of data.
The GD16571 is designed to meet and
exceed ITU-T STM-16 or SONET OC-48
fiberoptic communication systems re-
quirements.
The GD16571 is designed to sink a
Modulation Current into the IOUT pin and
a Pre-Bias Current into the IPRE pin. The
Modulation Current is adjustable up to
70 mA by means of the pin VMOD. The
Pre-Bias Current may be adjusted up to
50 mA by means of the VPRE pin.
CKSEL
CKINQ
CKINT
DINQ
DINT
CKIN
DIN
50
50
50
50
Buffer
Buffer
Input
Input
D
Q
VADJEF
Modulation
Current
Control
VMOD
Retiming of the data signal connected to
the pins DIN, DINQ is made by means of
a DFF clocked by an external clock sig-
nal at the data rate fed to the pins CKIN
and CKINQ.
A Mark-Space monitor is available on the
pins MARKP and MARKN. Together with
the symmetry adjustment pin (SYM) this
may be used to control the mark space
ratio of the output signal.
The GD16571 is implemented in a Sili-
con Bipolar process and requires a single
+5 V supply or a single -5.2 V supply.
The circuit is available in a thermally
enhanced 32-pin TQFP plastic package.
VADJBUF
Mark/Space
Monitor
Output
Driver
Pre-Bias
Current
Control
VPRE
IPRE
VDD
VDDR
VDDCONT
IOUT
IOUTN
VEE
VEEP
VEEB
VEER
MARKP
MARKN
SYM
2.5 Gbit/s
Retiming
Laser Driver
GD16571
Preliminary
Features
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Applications
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Complies with ITU-T STM-16 and
SONET OC-48 standards.
Intended for driving a 25 W load,
e.g. a laser diode with 25 W input
impedance.
Clocked or non-clocked operation.
Large modulation current adjustment
range from 5 mA to 70 mA.
Output voltage over / under shoot
less than ±2 % respectively ± 5 %.
Rise / fall times less than 100 ps.
Laser diode pre-bias adjustable up to
50 mA.
Mark-Space monitor.
Symmetry adjustment.
Internal 50 W termination of data and
clock inputs.
Operates up to 3.5 Gbit/s.
Power dissipation: 0.38 W.
Excluding Modulation Current and
Pre-bias Current.
Silicon Bipolar process.
32 pin thermally enhanced TQFP
plastic package.
Tele Communication:
– SDH STM-16
– SONET OC-48
Datacom up to 3.125 Gbit/s.
Electro Absorption laser driver.
Direct Modulation laser driver.
Data Sheet Rev.: 10

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gd16571 Summary of contents

Page 1

... MARKP and MARKN. Together with the symmetry adjustment pin (SYM) this may be used to control the mark space ratio of the output signal. The GD16571 is implemented in a Sili- con Bipolar process and requires a single +5 V supply or a single -5.2 V supply. The circuit is available in a thermally enhanced 32-pin TQFP plastic package ...

Page 2

... Functional Details GD16571 is a 2.5 Gbit/s laser driver with an optional retiming of the data signal capable of driving high power laser di- odes, typically having input impedance maximum modulation current and a maximum pre-bias cur- rent of 50 mA. Data (DIN, DINQ) is input to GD16571 and retimed within a DFF clocked by an external clock (CKIN, CKINQ) ...

Page 3

... Ground pin for retiming part. PWR Negative supply pins for laser driver part. PWR Negative supply pin for output driver. PWR Negative supply pin for pre-bias circuitry. PWR Negative supply pin for retiming part. Not Connected. Connected to VEE. GD16571 Page ...

Page 4

... I T Operating Temperature O T Storage Temperature S Note 1: Voltage and/or current should be externally limited to specified range. Data Sheet Rev.: 10 Conditions: MIN -0 -0 Note 1 -1 Base -55 -65 GD16571 SYM 24 VEE 23 VADJBUF 22 VADJEF 21 VMOD 20 IPRE 19 VEEP 18 VEEB 17 TYP.: MAX.: UNIT 0.5 V ...

Page 5

... MIN.: -5 OUT OUT PRE V = -1.3 V 150 VTH -2.0 -50 Note 1 -2.0 Note 1,2 -70 Note 1,3 -3 CASE GD16571 TYP.: MAX.: UNIT: -5.2 -4 0.38 0.5 W 800 -2.0 4 ...

Page 6

... Package Outline Figure 4. Package 32 pin. All dimensions are in mm. Data Sheet Rev.: 10 Conditions: MIN.: 2500 Note 1 Note 1 Note 1 300 60 20 Note 1 ± mA. Rise/Fall times at 20 – HI/LO voltage levels. LD GD16571 TYP.: MAX.: UNIT: Mbit 100 ps 100 ...

Page 7

... GIGA does not authorise or warrant any GIGA Product for use in life support devices and/or systems. Temperature Range: -40..85 °C GD16571, Data Sheet Rev Date: 24 July 2001 Distributor: Copyright © 2001 GIGA ApS An Intel company All rights reserved ...

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