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): 4/38頁(yè)
文件大?。?/td> 286K
代理商: AK2573A
ASAHI KASEI
[AK2573A]
<MS0189-E-01>
-4-
2004/5
. Pin Description
The symbo of I/O row shows below.
Ai: Analog input, Ai_l: LVPECL input, Ao: Analog output
Di: Digital input, Di_pu: Digital input with pulled-up resistor, Do: Digital output, Dio: Digital input /output,
Do_od: Digital output (open drain), Dio_od: Didital input /output (open drain)
PWR: Power or VSS
PIN#
Symbol
Function
1
NC
No Connection. Connect tothe VSS or leave open.
2
DATAP
Positive LVPECL data input. Input Inpedance >= 10k
Ω
3
DATAN
Negative LVPECL data input. Input Indedance >= 10k
Ω
4
SEL
“H” for latched data with clock. “L” for direct data.
I/O
Ai_l
Ai_l
Di
Remark
Do not
leave open
5
6
CLKP
CLKN
Positive LVPECL clock input. Connect to VSS when SEL = “L”. Ai_l
Negative LVPECL clock input. Connect toVDD or leave open
when SEL = “L”.
Write Protect. Internally pulled-up with 20k
Ω
(typ).
“H” sets device address 101000 and only user area of EEPROM
can access as read-only. “L” sets device address as 1010 and full
of EEPROM can access as read/write. For more information, see
Table 8-2 and 9-1.
TX Disable.
“H” for disable MOD and BIAS current. TXDIS1 and TXDIS2
are ORed internally. Use 4.7k
Ω
or more for externally pulled-up
or pulled-down.
Power supply for digital circuit.
TX Fault detection output (Open drain). Connect toVDD with
4.7k
Ω
to 10k
Ω
resistor.
Set “H” when detect TEMPALM, CURRALM, OPTALM or
DATAALM.
When set RE_SFP=1 and detect the ALM, TXFAULT is kept
“H” until receiving disable request at TXDIS1 or TXDIS2.
No Connection. Connect to the VSS or leave open.
Serial data input /output (Open drain). Connect to VDD with
4.7k to 10k resistor.
Ai_l
7
WP
Di_pu
8
TXDIS1
9
TXDIS2
Di
Do not
leave open
10
11
DVDD
TXFAULT
PWR
Do_od
AC load
100pF
12
13
NC
SDA
Dio_od
AC Load
100pF
Do not
leave open
Do not
leave open
AC Load
30pF
14
SCL
Serial clock input. The data (SDA) is shifted in at the rising edge
of SCL and is shifted out at the falling edge of SCL.
VSS for digital circuit.
NoConnection. Connect tothe VSS or leave open.
Sets the alarm when detects 1’s or 0’s sequential data input. The
detection time is 4.5us (typ).
The polarity can be set with EEPROM.
Sets the alarm when detects monitor PD current drop.
The polarity can be set with EEPROM.
Sets the alarm when detects the over current of I-DAC1 or
I-DAC2.
Alarm level can be set every 6
.
The polarity can be set with EEPROM.
Di
15
16
17
DVSS
NC
DATAALM
PWR
Do
18
OPTALM
Do
AC Load
30pF
AC Load
30pF
19
CURRALM
Do
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