AN8725FH Datasheet, PDF (15/36 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
Entire optical monitor (continued)
Gain ratio variation to
temperature
d
G_PMR
G_PMW
T_a = −20°C to +75°C
−3  3
Slew rate
S1_PMR In playback, AAF-off rise
13 18 
S1_PMW In recording, rise
35 45 
Signal changeover response
t_PMSW1 × 10 → × 1, at having reached ±0.5%  100 300
t_PMSW2 × 1 → × 10, at having reached ±0.5%  200 500
f characteristics
f_PMROF In playback, −3 dB, VR1 = 1 kΩ,
AAF filter on, I_PD 100 µA to 200 µA
 40.8 
Current amplification block
Gain variation to temperature
Gain ratio variation to
temperature
Signal changeover response
dG_IPDR In playback, I_PD = 60 µA to 240 µA, −3
T_a = −20°C to +75°C
dG_IPDW In recording, I_PD = 0.2 mA to 3.2 mA, −3
T_a = −20°C to +75°C
d ^GIPDR
G_PMW
In playback, I_PD = 60 µA to 240 µA,
In recording, I_PD = 0.2 mA to 3.2 mA,
−3
T_a = −20°C to +75°C
t_IPDSW1 × 10 → × 1,

at having reached ±0.5%
3
3
3
100 300
t_IPDSW2 × 1 → × 10,
at having reached ±0.5%
 200 500
I to V conversion
Offset voltage variation to
temperature
Slew rate
Open loop gain
Zero-cross frequency
Settling time
dV_IVOF VR1 = 0 Ω, I_PD = 0 µA,
dT T_a = −20°C to +75°C
 10 50
Sl_IV
20 34 
G_IV
 50 
f_0IV Output amplitude at 1 V[p-p]
8
t_IVSET Error ±0.5%, output variation: within  100 200
the range of 0 V to 2 V
AAF analog SW
On resistance at playback
On resistance at recording
DAC1
R_AFR
R_AFW
0 Ω between I_VOUT and I_VIN
 175 250
 200 300
f characteristics
f_DAC1 Sine wave signal equivalent to 40 mA[p-p] 
1

of current amplitude at LPF12 pin,
DAC7 [0h], DAC8 [Fh], DAC9 [00h],
RDCP2 pin = 1 000 pF
Unit
%
V/µs
ns
kHz
%
%
ns
µV
°C
V/µs
dB
MHz
ns
Ω
Ω
MHz
15