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| AN8725FH Datasheet, PDF (10/36 Pages) Panasonic Semiconductor – Semiconductor laser power control IC | |||
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AN8725FH
ICs for Optical Disk Drive
s Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)
Parameter
Symbol
Conditions
Min Typ Max Unit
Current amplification changeover
Gain at playback
Gain at recording
Gain ratio
I to V conversion block
GIPDR Reg7 = "80h", IPD = 40 µA to 240 µA 9.0
GIPDW Reg7 = "C0h", IPD = 200 µA to 3 200 µA 0.9
GRIPD GIPDR /GIPDW
9.0
10.0 11.0
1.0 1.1
10.0 11.0
times
times
times
Offset voltage
DAC1 block
VIVOF VR1 = 0 â¦, IPD = 0 mA
â15  15 mV
Resolution
RES1
 8  bit
Integral linearity error
EL1
â1.0  10.0 LSB
Differential linearity error
ED1
â1.0  1.5 LSB
Maximum output current
I1max DAC1 = "FFh", DAC8 [Fh],
DAC7 [0h], DAC9 [00h]
70 80 90 mA
Offset current
I1OF1 "00h" LPF-on, DAC8 [Fh],
DAC7 [0h], DAC9 [00h],
â1  1 mA
DAC7, DAC8 characteristics included
I1OF2 "00h" LPF-off, DAC8 [Fh],
DAC7 [0h], DAC9 [00h]
â250  250 µA
LPF on/off gain ratio
GRDAL GLPFON /GLPFOFF ,
input amplitude 0 V to 2 V
0.95 1 1.05 times
Settling time
tSDA1 XWR â to DAC1 [10h to 8Fh],
 400 800 ns
±2 LSB range, DAC7 [0h], DAC8 [Fh],
DAC9 [00h] LPF-off,
LPF11 pin open,
RDCP2 pin open
DAC7 block
Resolution
RES7
 4  bit
Integral linearity error
EL7
â1.0  1.0 LSB
Differential linearity error
ED7
â 0.5  0.5 LSB
Maximum output current
I7max Set to DAC7 = "Fh",
133 150 170 mA
DAC9 [1Fh], DAC1 [00h], DAC8 [0h]
Minimum output current
I7min Set to DAC7 = "0h",
â 0.1 0
DAC9 [1Fh], DAC1 [00h], DAC8 [0h]
0.1 mA
Settling time
tSDA7
XWR â to DAC7 [0h to Fh],
DAC9 [1Fh], ±0.5 LSB,
DAC1 [00h], DAC8 [0h]
 50 500 ns
DAC8 block
Resolution
RES8
 4  bit
Integral linearity error
EL8
â1.0  1.0 LSB
Differential linearity error
ED8
â 0.5  0.5 LSB
10
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