M66516FP Datasheet | Mitsubishi Electric

MITSUBISHI 〈DIGITAL ASSP 〉 〉 MITSUBISHI 〈DIGITAL ASSP M66516FP M66516FP LASER-DIODE DRIVER/CONTROLLER LASER-DIODE DRIVER/CONTROLLER MONITORING LOAD 2RM → INPUTS MO ← MONITORING ANALOG OUTPUT MONITORING PARATOR OUTPUT Features - Built-in sample-hold circuit for APC function - High speed switching (20Mbps) - Large drive current (150m A max.) - Capable of setting bias current (30m A max.) - 5V single power supply APPLICATION Semiconductor laser-diode applied equipment BLOCK DIAGRAM PARATOR OUTPUT CO 12 MONITORING MONITORING ANALOG OUTPUT MO 11 REFERENCE VOLTAGE OUTPUT Vref 19 REFERENCE VOLTAGE SOURCE PARATOR Vr  VL1  SWITCHING CURRENT  VL2 SETTING INPUTS 1RC 2RC  18 2 4 3 5 LINEAR AMP 3RC 7 1 VCC  15 GND  SAMPLE-HOLD CIRCUIT CURRENT SWITCHING CIRCUIT 8  20 DIFFERENTIAL AMP 9 1RM 10 2RM 13 S/H 14 CSH 21 PD 23 16 17 6 ENB LD DATA CD MONITORING SAMPLE-HOLD CONNECTION MONITORING OUTPUT TO DUTY CONTROL SWITCHING LASER CURRENT LASER INPUT DIODE INTPUT DATA INPUT ENABLE INPUT PIN FOR LOAD INPTUT CONTROL INPUT CURRENT LOAD SAMPLE-HOLD CAPACITOR    DESCRIPTION The M66516 is a semiconductor laser-diode driver/controller. Its functions are the driving and laser power control of a specific type (Mitsubishi’s R type laser) of semiconductor laser diode, in which the cathode of a semiconductor laser diode is connected in stem structure to the anode of a monitoring photodiode. The IC has a laser drive current output pin of source type and is capable of driving a laser diode on a maximum bias current of 30m A and a maximum switching current of 120 m A, which is switched at a rate of 20Mbits/sec. Since the M66516 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 PIN CONFIGURATION (TOP VIEW) VCC1 SWITCHING CURRENT SETTING INPUT 1 VL1 OUTPUT TO SWITCHING CURRENT SETTING LOAD 1RC 1 SWITCHING CURRENT VL2 SETTING INPUT 2 2RC OUTPUT...