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Numéro de référence | M61880FP | ||
Description | Laser-diode driver / controller | ||
Fabricant | Mitsubishi | ||
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1 Page
MITSUBISHI < DIGITAL ASSP >
M61880FP
Laser-diode driver / controller
DESCRIPTION
The M61880FP is a semiconductor laser-diode driver/
controller. Its functions are the driving and laser power
control of a specific type(Mitsubishi's N-type laser)of
semiconductor laser diode,in which the anode of a
semiconductor laser diode is connected in stem structure
to the cathode of a monitoring photodiode.
The IC has a laser drive current output pin of sink type
and is capable of driving a laser diode on a maximum bias
current of 40mA and a maximum switching current of 100
mA,which is switching at a rate of 200Mbps.
Since the M61880FP has a built in sample-hold circuit,it is
possible to realize an internal APC* system that requires
no external device for laser power control.
*:Automatic Power Control
FEATURES
Built-in sample-hold circuit for internal APC function
Hold error voltage is less than 1% for 1µs(C=0.047µF)
High speed switching 200Mbps
Large driving current 100mA (max)
Capable of setting bias current (40mA max)
5V single power supply
APPLICATION
Semiconductor laser-diode applied equipment
Laser beam printer(LBP)
Plain Paper Copier(PPC)
PIN CONFIGURATION (TOP VIEW)
OUTPUT TO SWITCHING
CURRENT SETTING LOAD
RS
1
GND1 2
OUTPUT TO BIAS CURRENT RB
SETTING LOAD
BIAS CURRENT SETTING
VOLTAGE INPUT
VB
REFERENCE VOLTAGE
OUTPUT
Vref
REFERENCE VOLTAGE
INPUT
Vr
3
4
5
6
HOLDING CAPACITOR
LOAD INPUT/OUTPUT
CH
7
SAMPLE-HOLD
CONTROL INPUT
S/H 8
Vcc1 9
NC 10
20 Vcc2
19
RO
LASER CURRENT
LOAD OUTPUT
18 N C
17
LD
LASER CURRENT
OUTPUT
16 GND2
15
PD
MONITORING
DIODE INPUT
14
DATA SWITCHING
DATA INPUT
13 ENB LASER CURRENT
ENABLE INPUT
12 2RM MONITORING
LOAD INPUT 2
11 1RM MONITORING
LOAD INPUT 1
NC : No connection
Outline 20P2N-A
BLOCK DIAGRAM
Vcc2 RO N C LD GND2 PD DATA ENB 2RM 1RM
20 19 18 17 16 15 14
13
12 11
+
TTL/ECL
ISW
COMP
IB
1 23
RS GND1 RB
2.5V
50K
Reference
voltage
1.5V
4 56
VB Vref Vr
7
8 9 10
S/H Vcc1 NC
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Pages | Pages 11 | ||
Télécharger | [ M61880FP ] |
No | Description détaillée | Fabricant |
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