m66515fp Renesas Electronics Corporation., m66515fp Datasheet - Page 2

• Manufacturer Part Number: m66515fp
• Description: Laser Diode Driver/controller
• Manufacturer: Renesas Electronics Corporation.

M66515FP
Pin Configuration (top view)
Description of Pin
Pin name
LD
PD
R
R
V
DATA
1RM, 2RM
ENB
RO
S/H
CH
Vref
Vr
TEST
V
V
GND1
GND2
Rev.1.00, Sep.22.2003, page 2 of 11
S
B
B
CC
CC
1
2
Name
Laser current output
Monitor diode input
Switching current setting load
output
Bias current setting load
output
Bias current setting voltage
input
Switching data input
Load input for monitoring
Laser current enable input
Laser current load output
Sample hold control input
Hold capacitor load
input/output
Reference voltage output
Reference voltage input
Test pin
Power supply pin 1
Power supply pin 2
GND pin 1
GND pin 2
Function
Connected to the semiconductor LD cathode
Connected to the monitor PD anode
Connects the load resistance to set the current for switching (I
Connects the load resistance to set the bias current (I
used, this pin should be left open.
The bias current value (I
is not used, this pin should be left open.
At "L", the current I
Connect a load resistance to convert the monitor PD current to a voltage
across 1RM and 2RM
When "H", all current source circuits are turned off
Connect a laser current load resistance between this pin and V
When "L", sample (APC) operation is performed; when "H", hold
(switching) is performed
Connect a hold capacitor between this pin and GND. This pin is connected
within the M66515 to the sample hold circuit output and I
input.
Output pin for the M66515 internal reference voltage (1.2 V typ)
A reference voltage is applied to cause operation of the comparator within
the sample hold circuit. When using the reference voltage within the
M66515, this pin should be connected to the V
Pin used for testing at time of shipment of the M66515; should be left open
Power supply for the internal analog system; connect to a positive power
supply (+5 V)
Power supply for the internal digital system; connect to a positive power
supply (+5 V)
GND for internal analog system
GND for internal digital system
SW
+I
B
B
flows to the LD; at "H", the current to the LD is I
) can be set by applying a voltage to this pin. If I
ref
pin.
B
) to GND. If I
SW
current source
SW
CC
) to GND
B
is not
B
B