ak2573a AKM Semiconductor, Inc., ak2573a Datasheet - Page 4

• Manufacturer Part Number: ak2573a
• Description: 125m / 156m Laser Diode Driver Apc - Asahi Kasei Microsystems
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The symbol 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
<MS0189-E-01>
PIN#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Symbol
NC
DATAP
DATAN
SEL
CLKP
CLKN
WP
TXDIS1
TXDIS2
DVDD
TXFAULT
NC
SDA
SCL
DVSS
NC
DATA ALM
OPTALM
CURRALM
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.
are ORed internally. Use 4.7k! or more for externally pulled-up
or pulled-down.
4.7k! to 10k! resistor.
DATA ALM.
“ H” until receiving disable request at TXDIS1 or TXDIS2.
4.7k to 10k resistor.
of SCL and is shifted out at the falling edge of SCL.
detection time is 4.5us (typ).
I-DAC2.
Function
No Connection. Connect to the VSS or leave open.
Positive LVPECL data input. Input Inpedance >= 10k !
Negative LVPECL data input. Input Indedance >= 10k!
“ H” for latched data with clock. “ L” for direct data.
Positive LVPECL clock input. Connect to VSS when SEL = “ L” . Ai_l
Write Protect. Internally pulled-up with 20k! (typ).
“ H” sets device address 101000 and only user area of EEPROM
TX Disable.
“ H” for disable MOD and BIAS current. TXDIS1 and TXDIS2
Power supply for digital circuit.
TX Fault detection output (Open drain). Connect to VDD with
Set “ H” when detect TEMPALM, CURRA LM, OPTALM or
When set RE_SFP=1 and detect the ALM, TXFAULT is kept
No Connection. Connect to the VSS or leave open.
Serial data input / output (Open drain). Connect to VDD with
Serial clock input. The data (SDA) is shifted in at the rising edge
VSS for digital circuit.
No Connection. Connect to the VSS or leave open.
Sets the alarm when detects 1’ s or 0’ s sequential data input. The
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
Alarm level can be set every 6#.
The polarity can be set with EEPROM.
Negative LVPECL clock input. Connect to VDD or leave open
when SEL = “ L” .
. Pin Description
-4-
I/O
Ai_l
Ai_l
Di
Ai_l
Di
PWR
Do_od
Dio_od
Di
PWR
Do
Do
Do
Di_pu
[AK2573A]
Remark
Do not
leave open
Do not
leave open
AC load
" 100pF
AC Load
" 100pF
Do not
leave open
Do not
leave open
AC Load
" 30pF
AC Load
" 30pF
AC Load
" 30pF
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