AN8725FH Datasheet, PDF (17/36 Pages) Panasonic Semiconductor – Semiconductor laser power control IC

ICs for Optical Disk Drive
AN8725FH
s Electrical Characteristics at V_CC = 5.0 V, T_a = 25°C (continued)
• Design reference data (continued)
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min Typ Max Unit
DAC2
Offset current temperature
characteristics
dI_DA2OF
dT
  10 µA
°C
Driving current temperature
characteristics
Settling time
Err_DA2 DAC3 = "FFh", set to DAC4 = "Fh", 
6
10
%
T_a = −20°C to +75°C
t_SDA2A
XWR ↑ to
DAC2 [∆4: 10 h to 14h],
±0.5 LSB DAC4 [Fh]
 40 100 ns
t_SDA2B
XWR ↑ to
DAC2 [∆7F: 10 h to 8 Fh],
±1.0 LSB DAC4 [Fh]
 80 200
DAC3
Offset current temperature
characteristics
dI_DA3OF
dT
  10 µA
°C
Driving current temperature
characteristics
Settling time
Err_DA3 DAC3 = "FFh", set to DAC4 = "Fh", 
6
10
%
T_a = −20°C to +75°C
t_SDA3A XWR ↑ to
DAC3 [∆4: 10 h to 14h],
 40 100 ns
±0.5 LSB DAC4 [Fh]
t_SDA3B
XWR ↑ to
DAC3 [∆7F: 10 h to 8Fh],
±1.0 LSB DAC4 [Fh]
 80 200
DAC4
Offset current temperature
characteristics
dI_DA4OF
dT
  10 µA
°C
Driving current temperature
Err_DA4 DAC4 = "Fh", set to DAC2 = "FFh", 
6
10
%
characteristics
T_a = −20°C to +75°C
Supply voltage monitoring block
Abnormal supply voltage
detection hysteresis
V_PSDHYS Voltage difference between abnormality  300  mV
detection and release of supply voltage
drop, V_PSD1 −V_PSDH
V_PSOHYS Voltage difference between abnormality  300 
detection and release of supply voltage
drop, V_PSOH −V_PSOL
Comparator in abnormally emitted light detection block
Input offset voltage
V_PDCOF Insufficiently emitted light detection
−5 
5
mV
V_POCOF Excessively emitted light detection
−5  5
17