AN8725FH Datasheet | Panasonic

ICs for Optical Disk Drive Semiconductor laser power control IC s Overview The AN8725FH is a laser driver IC that can set a laser emitting level to a maximum precision in recording and playback of an optical recording equipment such as PD, and can modulate a laser light in tune with the external signal. 14.00±0.20 12.00±0.20 60 61 41 40 (1.25) 12.00±0.20 14.00±0.20 21 0.90±0.10 1.95±0.20 1 (1.25) 0.50 20 0.18 +0.10 - 0.05 Unit: mm s Features - Digital setting of playback current, peak current, bias current and abnormal light emitting level - Peak current and bias current can be modulated by the external signal. - Driving current set-up (digital set-up) For playback: 8-bit + 4-bit (0 m A to 80 m A) 5-bit + 4-bit (0 m A to 150 m A) For peak: 4-bit + 8-bit (0 m A to 150 m A) For bias: 4-bit + 8-bit (0 m A to 150 m A) - Laser output light monitoring circuit built-in - Abnormal light emitting detecting function built-in: Possible to set up excessive and insufficient light emitting levels with 4-bit DAC for playback and recording, respectively. - Supply voltage abnormality detection: Voltage down (3.9 V or less), voltage up (6.1 V or more) (1.00) - 0.05 +0.10 Seating plane 0.90±0.10 0.10±0.10 0° to 10° 0.50±0.20 QFP080-P-1212 s Applications - Optical disk drive AN8725FH s Block Diagram PKGND ICs for Optical Disk Drive PKDCP BIGND RDCP2 64 DAC8 PKVCC IGND 40 4 35 AGND 5 54 4 5 6 8 9 4 AD0 AD1 AD2 AD3 DT0 16 DT1 17 DT2 18 DT3 22 DT4 23 DT5 24 DT6 25 DT7 26 XLDEN 27 XCLR 29 XLDERR 32 XHFON PWMSK 30 ERFIL 31 55 4 Excessive light emission DAC6 4 PS over PS...