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AK2573AVB 参数 Datasheet PDF下载

AK2573AVB图片预览
型号: AK2573AVB
PDF下载: 下载PDF文件 查看货源
内容描述: 125M / 156M激光二极管驱动器+ APC [125M / 156M Laser Diode Driver + APC]
分类和应用: 驱动器驱动程序和接口二极管激光二极管接口集成电路PC
文件页数/大小: 38 页 / 266 K
品牌: AKM [ ASAHI KASEI MICROSYSTEMS ]
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ASAHI KASEI
[AK2573A]
AK2573A
125M / 156M
Laser Diode Driver + APC
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Features
1 chip 125M / 156M Laser Diode Driver (LDD) +
Digital APC (APC_FF and APC_FB)
Programmable laser BIAS and modulation current
controlled by an on-chip temperature sensor
(APC_FF)
Digital feedback circuit for APC (APC FB)
Two current output 8 bit DACs,
I-DAC1: 85mA sink for modulation current
I-DAC2: 54mA sink for BIAS current
TXFAULT detection and 1kbit ID Field (EEPROM)
for SFP (Small Form-factor Pluggable) support
I
2
C
TM
compatible digital I/F
Duty adjustment
Power failure alarm (OPTALM), Over current alarm
(CURRALM), Temperature alarm (TEMPALM),
Data alarm (DATAALM) and TXFAULT for failure
alarm
BIAS and modulation current monitors (* 0.0095)
Single 3.3V +/- 0.2V operation
Description
The AK2573A is a 1chip LDD (Laser Diode Driver) and
an APC (Auto Power Control) for laser direct
modulation application. It contains up to 156M LDD,
programmable duty adjustment, BIAS and modulation
currents, a digital feedback circuit, BIAS and
modulation current monitors, failure alarms, I
2
C
TM
interface, an EEPROM for storing LD characteristics
and user information, and TXFAULT detection for SFP
application. The AK2573A has two APC functions;
APC FF (Feed-forward) and APC FB (Feedback). APC
FF supplies a programmed current in response to the
temperature. APC FB provides a stable auto power
control function with an internal digital feedback
algorithm.
All program and operational functions can be set
through the I
2
C
TM
compatible interface and stored in the
on-chip EEPROM.
Ordering Information
Product Number
AK2573AVB
Block Diagram
SEL
DATAP
DATAN
DATA
(LVPECL)
Selecter
DUTY_
ADJ
DRIVER
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Applications
STM-1 / OC-3 (156Mbps) Optical Interface Module
TS–1000 (125Mbps) Optical Interface Module
PKG
BCC++ 48 (7mm * 7mm)
I
2
C
TM
is a trademark o f Philips Corporation.
IMODN
LD
IMOD
Imod
CLKP
CLKN
CLK
(LVPECL)
FF
OSC
I-DAC1
* 0.0095
MODMON
TEMPSENS
ADC
EEPROM
APC
I-DAC2
Ibias
IBIAS
* 0.0095
TEMPMON
BIASMON
DATAALM
OPTALM
ALM
PDGAIN
RPD
CPD
BIAS
RB (12k)
SCL SDA*
WP**
BIAS_GEN
PDIN
CURRALM
TEMPALM
TXFAULT*
Digital I/F
Monitor
PD
PDMON
SHUTDOWN
CONTROL
TXDIS1
TXDIS2
*: Open Drain
**: Pull-up
<MS0189-E-01>
-1-
2004/5