FAGD1657132BA Intel, FAGD1657132BA Datasheet

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FAGD1657132BA

Manufacturer Part Number
FAGD1657132BA
Description
Manufacturer
Intel
Datasheet

Specifications of FAGD1657132BA

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an Intel company
General Description
The GD16578 is a high performance low
power 2.5 Gbit/s Laser Driver with
optional on chip retiming of data.
The GD16578 is designed to meet and
exceed ITU-T STM-16 or SONET OC-48
fiberoptic communication systems re-
quirements.
The GD16578 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
200 mA by means of the pin VMOD. The
Pre-Bias Current may be adjusted up to
60 mA by means of the VPRE pin.
CKSEL
CKINQ
CKINT
SPOL
DINQ
DINT
CKIN
DIN
50
50
50
50
Buffer
Buffer
Input
Input
D
Q
Modulation
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 GD16578 can operate on 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.
Current
Control
VMOD
Mark/Space
Output
Monitor
Driver
Pre-Bias
Current
Control
VPRE
IPRE
VDD
VDDR
IOUT
IOUTN
VEE
VEEB
VEEP
VEER
MARKP
MARKN
SYM
2.5 Gbit/s
Retiming
Laser Driver
GD16578
Features
Applications
Complies with ITU-T STM-16 and
SONET OC-48 standards.
Intended for driving a 25
a laser diode or Mach Zender mod-
ulator with 25
Clocked or non-clocked operation.
Large modulation current adjustment
range from 70 mA to 200 mA.
Output voltage over / under shoot
less than 5 % respectively
Rise / fall times less than 100 ps.
Laser diode pre-bias adjustable up to
60 mA.
Mark-Space monitor.
Symmetry adjustment
Internal 50
and clock inputs.
Power dissipation: 1 W (typ.).
(excluding Modulation Current and
Pre-bias Current).
32 pin thermally enhanced TQFP
plastic package.
Tele Communication:
– SDH STM-16
– SONET OC-48
Data Communication.
Electro Absorption laser driver.
Direct Modulation laser driver.
Mach Zender modulator driver.
termination of data
input impedance.
Data Sheet Rev.: 13
load, e.g.
10 %.

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FAGD1657132BA Summary of contents

Page 1

... Intel company General Description The GD16578 is a high performance low power 2.5 Gbit/s Laser Driver with optional on chip retiming of data. The GD16578 is designed to meet and exceed ITU-T STM-16 or SONET OC-48 fiberoptic communication systems re- quirements. The GD16578 is designed to sink a Modulation Current into the IOUT pin and a Pre-Bias Current into the IPRE pin ...

Page 2

Functional Details GD16578 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 of ...

Page 3

VTT VTT L1 L3 220uH 220uH L2 L4 10uH 10uH 100nF To IOUT Ext. Load 100nF IOUTN 25 VDD Figure 3. AC Coupled Output For high modulation currents it may be necessary to use a positive supply for the bias ...

Page 4

Pin List Mnemonic: Pin No.: DIN 27 DINQ 26 DINT 28 CKIN 31 CKINQ 32 CKINT 30 IOUT 13, 14 IOUTN 11, 12 IPRE 19 VMOD 20 VPRE 16 CKSEL 1 SPOL 9 SYM 24 MARKP 7 MARKN 6 VDD ...

Page 5

Package Pinout CKSEL 1 VDD 2 VDD 3 VDD 4 VEE 5 MARKN 6 MARKP 7 VEE 8 Figure 5. Package 32 TQFP, Top View Maximum Ratings These are the limits beyond which the component may be damaged. All voltages ...

Page 6

DC Characteristics appropriate heat sinking may be required. Device is DC-tested in the temperature range CASE specifications from - are guaranteed by design, and ...

Page 7

VDD IPRE IPRE IOUT IOUTN VEE I EE Figure 6. Equivalent of power dissipation Example: With from PRE consumption for the device itself at 160 mA + 0.1 × ...

Page 8

AC Characteristics +85 C, appropriate heat sinking may be required. Device is AC-tested in the temperature range CASE specifications from - are guaranteed by design, and ...

Page 9

... Package Outline Figure 7. Package 32 pin TQFP EQUAD. Device Marking GD16578 <Wafer ID> <Intel FPO#> Pin 1 - Mark Figure 8. Device Marking. Top View. Data Sheet Rev.: 13 GD16578 Page ...

Page 10

... Ordering Information To order, please specify as shown below: Product Name: Intel Order Number: FAGD1657832BA GD16578-32BA an Intel company Mileparken 22, DK-2740 Skovlunde Denmark Phone : +45 7010 1062 Fax : +45 7010 1063 E-mail : giga.support.@intel.com Web site : http://developer.intel.com/design/network Please check our Internet web site for latest version of this data sheet. ...

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