AN8725FH Datasheet, PDF (14/36 Pages) Panasonic Semiconductor – Semiconductor laser power control IC

AN8725FH
ICs for Optical Disk Drive
s Electrical Characteristics at V_CC = 5.0 V, T_a = 25°C (continued)
Parameter
Symbol
Conditions
Recording Modulation
Peak modulation signal response ^*1 t₁₁₃ PKMD ↑ to LDPK ↑ 50% delay
t₁₁₄ PKMD ↓ to LDPK ↓ 50% delay
t₁₁₅ LDPK ↑ 50% to LDPK ↓ 50%
t₁₁₆ LDPK ↑ 10% to LDPK ↑ 90%
t₁₁₇ LDPK ↓ 90% to LDPK ↓ 10%
Bias modulation signal response ^*1 t₁₂₃ BIMD ↑ to LDBI ↑ 50% delay
t₁₂₄ BIMD ↓ to LDBI ↓ 50% delay
t₁₂₅ LDBI ↑ 50% to LDBI ↓ 50%
t₁₂₆ LDBI ↑ 10% to LDBI ↑ 90%
t₁₂₇ LDBI ↓ 90% to LDBI ↓ 10%
Note) *1: Resistive load (at 15 Ω)
Conditions of t₁₁₃ to t₁₁₇
Measure at approximately 1.75 V of LDPK pin voltage.
DAC1 [FFh], DAC8 [7h]
DAC9 [1Fh], DAC7 [7h], DAC4 [Fh]
DAC2 [00h to 80f]
Conditions of t₁₂₃ to t₁₂₇
Measure at approximately 1.75 V of LDPK pin voltage.
DAC1 [FFh], DAC8 [7h]
DAC9 [1Fh], DAC7 [7h], DAC4 [Fh]
DAC3 [00h to 80f]
Min Typ Max Unit
 18 30 ns
 17 30
t₁₁₂ −3 t₁₁₂ −1 t₁₁₂ +1
6
9
4
6
 18 30 ns
 17 30
t₁₂₂ −3 t₁₂₂ −1 t₁₂₂ +1
6
9
5
8
• Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min Typ Max Unit
Reference voltage block
Reference voltage temperature ∆V_TEM V_REF = 0 V, T_a = −20°C to +75°C
characteristics ^*2
  ±30 mV
Digital block
Low → high input hysteresis V_LHHYS To be applied to PWMSK, ERFIL pin  1.0 
V
(Schmidt trigger input)
High → low input hysteresis V_HLHYS To be applied to PWMSK, ERFIL pin  1.0 
V
(Schmidt trigger input)
Entire optical monitor
Offset voltage temperature
variation
∆V_PMOFR In playback, VR1 = 1 kΩ
∆T I_PD = 10 µA to 200 µA
T_a = −20°C to +75°C
 55 200 µV
°C
∆V_PMOFW In recording, VR1 = 1 kΩ
∆T I_PD = 100 µA to 2 000 µA
T_a = −20°C to +75°C
 30 150
Note) *2: Difference between V_REF min. and V_REF max. within the range of T_a = −20°C to +75°C.
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