Voltage Monitors. X9520 Datasheet

X9520 Datasheet PDF, Equivalent


Part Number

X9520

Description

Dual Voltage Monitors

Manufacture

Intersil Corporation

Total Page 30 Pages
PDF Download
Download X9520 Datasheet PDF


X9520 Datasheet
®
PRELIMINARY
X9520
Fiber Channel/Gigabit Ethernet Laser Diode Control for Fiber Optic Modules
Data Sheet
January 3, 2006
FN8206.1
Triple DCP, POR, 2kbit EEPROM Memory,
Dual Voltage Monitors
The X9520 combines three Digitally Controlled
Potentiometers (DCPs), V1/Vcc Power-on Reset (POR)
circuitry, two programmable voltage monitor inputs with
software and hardware indicators, and integrated EEPROM
with Block Lock™ protection. All functions of the X9520 are
accessed by an industry standard 2-Wire serial interface.
Two of the DCPs of the X9520 may be utilized to control the
bias and modulation currents of the laser diode in a Fiber Optic
module. The third DCP may be used to set other various
reference quantities, or as a coarse trim for one of the other two
DCPs. The 2kbit integrated EEPROM may be used to store
module definition data. The programmable POR circuit may be
used to ensure that V1/Vcc is stable before power is applied to
the laser diode/module. The programmable voltage monitors
may be used for monitoring various module alarm levels.
The features of the X9520 are ideally suited to simplifying the
design of fiber optic modules which comply to the Gigabit
Interface Converter (GBIC) specification. The integration of
these functions into one package significantly reduces board
area, cost and increases reliability of laser diode modules.
www.DataSheet4U.com
Ordering Information
PART
TEMP.
PART NUMBER MARKING RANGE (°C)
PACKAGE
X9520B20I-A
-40 to +85 20 Ld CSP
X9520B20I-AT1
-40 to +85 20 Ld CSP
X9520B20I-BT1
-40 to +85 20 Ld CSP
X9520V20I-A
X9520V IA -40 to +85 20 Ld TSSOP
X9520V20I-AT1 X9520V IA -40 to +85 20 Ld TSSOP
X9520V20I-B
X9520V IB -40 to +85 20 Ld TSSOP
X9520V20I-BT1 X9520V IB -40 to +85 20 Ld TSSOP
X9520V20IZ-A
X9520V ZIA -40 to +85 20 Ld TSSOP
(Pb-free)
X9520V20IZ-AT1 X9520V ZIA -40 to +85 20 Ld TSSOP
(Pb-free)
X9520V20IZ-B
X9520V ZIB -40 to +85 20 Ld TSSOP
(Pb-free)
X9520V20IZ-BT1 X9520V ZIB -40 to +85 20 Ld TSSOP
(Pb-free)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Features
• Three Digitally Controlled Potentiometers (DCPs)
- 64 Tap - 10k
- 100 Tap - 10k
- 256 Tap - 100k
- Nonvolatile
- Write Protect Function
• 2kbit EEPROM Memory with Write Protect & Block Lock
• 2-Wire Industry Standard Serial Interface
- Complies to the Gigabit Interface Converter (GBIC)
specification
• Power-on Reset (POR) Circuitry
- Programmable Threshold Voltage
- Software Selectable Reset Timeout
- Manual Reset
• Two Supplementary Voltage Monitors
- Programmable Threshold Voltages
• Single Supply Operation
- 2.7V to 5.5V
• Hot Pluggable
• 20 Ld Packages
- CSP (Chip Scale Package)
- TSSOP
• Pb-Free Plus Anneal Available (RoHS Compliant)
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
©2000 Intersil Inc., Patents Pending. Copyright Intersil Americas Inc. 2005-2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

X9520 Datasheet
X9520
Block Diagram
WP
SDA
SCL
MR
V3
V2
V1/Vcc
DATA
REGISTER
COMMAND
DECODE &
CONTROL
LOGIC
THRESHOLD
RESET LOGIC
8
PROTECT LOGIC
CONSTAT
REGISTER
4
2kbit
EEPROM
ARRAY
VTRIP3
VTRIP 2
VTRIP1
-
+
-
+
+
-
2
WIPER
COUNTER
REGISTER
6 - BIT
NONVOLATILE
MEMORY
WIPER
COUNTER
REGISTER
7 - BIT
NONVOLATILE
MEMOR Y
WIPER
COUNTER
REGISTER
8 - BIT
NONVOLATILE
MEMOR Y
POWER-ON /
LOW VOLTAGE
RESET
GENERATION
RH0
RW0
RL0
RH1
RW1
RL1
RH2
RW2
RL2
V3RO
V2RO
V1RO
Detailed Device Description
The X9520 combines three Intersil Digitally Controlled
Potentiometer (DCP) devices, V1/Vcc power-on reset
control, V1/Vcc low voltage reset control, two supplementary
voltage monitors, and integrated EEPROM with Block
Lock™ protection, in one package. These functions are
suited to the control, support, and monitoring of various
system parameters in Fiber Channel/Gigabit Ethernet fiber
optic modules, such as in Gigabit Interface Converter (GBIC)
applications. The combination of the X9520 fucntionality
lowers system cost, increases reliability, and reduces board
space requirements using Intersil’s unique XBGA™
packaging.
Two high resolution DCPs allow for the “set-and-forget”
adjustment of Laser Driver IC parameters such as Laser
Diode Bias and Modulation Currents. One lower resolution
DCP may be used for setting sundry system parameters
such as maximum laser output power (for eye safety
requirements).
Applying voltage to VCC activates the Power-on Reset circuit
which allows the V1RO output to go HIGH, until the supply
the supply voltage stabilizes for a period of time (selectable
via software). The V1RO output then goes LOW. The Low
Voltage Reset circuitry allows the V1RO output to go HIGH
when VCC falls below the minimum VCC trip point. V1RO
remains HIGH until VCC returns to proper operating level. A
Manual Reset (MR) input allows the user to externally trigger
the V1RO output (HIGH).
Two supplementary Voltage Monitor circuits continuously
compare their inputs to individual trip voltages. If an input
voltage exceeds it’s associated trip level, a hardware output
(V3RO, V2RO) are allowed to go HIGH. If the input voltage
becomes lower than it’s associated trip level, the
corresponding output is driven LOW. A corresponding binary
representation of the two monitor circuit outputs (V2RO and
V3RO) are also stored in latched, volatile (CONSTAT)
register bits. The status of these two monitor outputs can be
read out via the 2-wire serial port.
An application of the V1RO output may be to drive the
“ENABLE” input of a Laser Driver IC, with MR as a
“TX_DISABLE” input. V2RO and V3RO may be used to
monitor “TX_FAULT” and “RX_LOS” conditions respectively.
Intersil’s unique circuits allow for all internal trip voltages to
be individually programmed with high accuracy. This gives
the designer great flexibility in changing system parameters,
either at the time of manufacture, or in the field.
The memory portion of the device is a CMOS serial
EEPROM array with Intersil’s Block Lock™ protection. This
memory may be used to store fiber optic module
manufacturing data, serial numbers, or various other system
parameters. The EEPROM array is internally organized as x
8, and utilizes Intersil’s proprietary Direct Write™ cells,
providing a minimum endurance of 1,000,000 cycles and a
minimum data retention of 100 years.
The device features a 2-Wire interface and software protocol
allowing operation on an I2C™ compatible serial bus.
2 FN8206.1
January 3, 2006


Features Datasheet pdf ® X9520 Fiber Channel/Gigabit Ethernet Laser Diode Control for Fiber Optic Mo dules Data Sheet January 3, 2006 FN8206 .1 PRELIMINARY Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors T he X9520 combines three Digitally Contr olled Potentiometers (DCPs), V1/Vcc Pow er-on Reset (POR) circuitry, two progra mmable voltage monitor inputs with soft ware and hardware indicators, and integ rated EEPROM with Block Lock™ protect ion. All functions of the X9520 are acc essed by an industry standard 2-Wire se rial interface. Two of the DCPs of the X9520 may be utilized to control the bi as and modulation currents of the laser diode in a Fiber Optic module. The thi rd DCP may be used to set other various reference quantities, or as a coarse t rim for one of the other two DCPs. The 2kbit integrated EEPROM may be used to store module definition data. The progr ammable POR circuit may be used to ensu re that V1/Vcc is stable before power i s applied to the laser diode/module. The programmable voltage moni.
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