參數(shù)資料
型號(hào)： AK2573A
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 125M / 156M Laser Diode Driver + APC
中文描述： 1.25億/ 1.56 apc的激光二極管驅(qū)動(dòng)器
文件頁(yè)數(shù)： 11/38頁(yè)
文件大?。?/td> 286K
代理商： AK2573A
ASAHI KASEI
[AK2573A]
<MS0189-E-01>
-11-
2004/5
Ⅵ
. Circuit Description
1. Parameter Notation
1.1 Parameter Definition
In the AK2573A Circuit Description, in order todistinguish various pre-set parameter sources from EEPROM,
Registers or Device pins, “Identifier - Main name” notation is used as shown in Table 1-1. For ease of operational
description, small letters sometimes expresses internal signals.
Table 1-1 Parameter Definitions
Register
Identifier Main Name
R_
REGISTER name
(All Capital)
E_
EEPROM name
(All Capital))
RE_
REGISTER /
EEPROM name
(All Capital)
P_
PIN name
(All Capital)
None
BLOCK name
(All Capital))
None
signal name
(small letter)
Remark
Indicates register
Example
R_APC_FB
R_DAC1
E_PDGAIN
E_DAC1_FF_TC
RE_DAC1_GAIN
RE_APC_TRGT
EEPROM
Indicates EEPROM
Ether or both Register
or /and EEPROM
Indicates either register
or EEPROM
PIN
P_PDMON
BLOCK
I-DAC1
APC_COMP
vpd
Internal Node
1.2 Operation Overview
The AK2573A has 3 primary functions; 125M /156M Laser diode driver part, APC (Automatic Power Control) part
which supplies adequate bias current and modulation current to a Laser Diode, and the Control part tocontrol
operation modes of the AK2573A operation.
There are 3 operation modes in the AK2573A. Since each adjusting function is controlled through I
2
C
TM
Interface, it
realizes an automatic parameter adjustment.
(1) Self-running Mode
Self-running mode is ready for normal operation after all adjustments are completed. In this mode, temperature
detection, EEPROM access and feeding current are automatically performed using the on-chip oscillator. The
AK2573A works in this mode after power-on.
(2) Adjustment Mode
Adjustment mode is designed for training the LD characteristics. The AK2573A operates according tothe register
settings set through the I
2
C
TM
I/F.
(3) EEPROM Mode
EEPROM mode is used for storing LD characteristics into EEPROM via I
2
C
TM
I/F.
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK2573AVB 制造商:AKM 制造商全稱(chēng):AKM 功能描述:125M / 156M Laser Diode Driver + APC
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