|
|
PDF BA6387K Data sheet ( Hoja de datos )
| Número de pieza | BA6387K | |
| Descripción | Preservo amplifier for CD players | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de BA6387K (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
|
No Preview Available !
Optical disc ICs
Preservo amplifier for CD players
BA6387K
BA6387K
The BA6387K is a preservo amplifier for CD players. By using this paired with a ROHM DSP, a servo and main signal
system can be configured with few external components and low power consumption.
!Applications
CD players
!Features
1) Internal RF and AGC circuits.
2) Internal APC circuit.
3) Internal auto asymmetry circuit.
4) Internal disc defect detector.
5) Internal focus protect function against disc defects.
!Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Power supply voltage
VCC
Power dissipation
Pd
Operating temperature
Topr
Storage temperature
Tstg
* Reduced by 4mW for each increase in Ta of 1˚C over 25˚C.
Limits
9
400*
-25~+75
-55~+125
!Recommended operating conditions (Ta = 25°C)
Parameter
Symbol
Power supply voltage
VCC
Limits
2.4~5.5
Unit
V
mW
˚C
˚C
Unit
V
1 page  
Optical disc ICs
BA6387K
Parameter
Symbol
〈APC〉
Output voltage 1
VO1AP
Output voltage 2
VO2AP
Reference voltage
VAPR
Frequency characteristics
FAP
〈AGC〉
Reference voltage 1
VAGC1
Reference voltage 2
VAGC2
Attack time
RATT
Recovery time
RRCV
〈Mirror detector〉
Output high level voltage
VOHMR
Output low level voltage
VOLMR
Minimum operating frequency FMNMR
Maximum operating frequency FMXMR
Minimum input operating voltage VMNMR
Maximum input operating voltage VMXMR
〈Defect detector〉
Output high level voltage
VOHDF
Output low level voltage
VOLDF
Minimum operating frequency
FMNDF
Maximum operating frequency FMXDF
Minimum input operating voltage VMNDF
Maximum input operating voltage VMXDF
Scratch depth
VSC
〈Ramp wave generator circuit〉
Period
ISIRA
High level limit voltage
VLHRA
Low level limit voltage
VLLRA
〈FON pin〉
Inflow current
IIFON
Input threshold voltage
VTHFO
〈Loop on unit〉
Loop off delay time
tOFLO
〈FZC comparator〉
Input sensitivity level
VFZH
Zero cross sensitivity level
VFZL
Min.
1.90
-
190
-5
0
180
70
0.7
2.0
-
-
30
-
1.2
2.0
-
-
2
-
1.2
0.13
220
80
-168
10.4
1.10
4.0
320
120
Typ.
2.30
1.0
200
-1
-
195
100
1.0
-
-
-
-
-
-
-
-
-
-
-
-
0.20
340
124
-124
13.5
1.45
6.6
400
200
Max.
-
1.4
210
3
100
210
130
1.3
-
0.5
600
-
0.2
-
-
0.5
1
-
0.5
-
0.27
460
168
-80
16.6
1.80
10.0
480
280
Unit Conditions
V 230mV input at pin 7
V 170mV input at pin 7, I2 = 1mA
mV -
dB SG7 = 40mVP-P, 500Hz
mV V8 = 0.8V, RFO = 1.2VP-P
mV V8 = 0.8V, RFO = 0.7VP-P
kΩ
Measurement of internal R
MΩ
V RL = 15kΩ
V
Hz
kHz
VP-P
VP-P
-
-
-
-
-
V RL = 15kΩ
V
kHz
kHz
VP-P
VP-P
V
-
-
-
-
-
-
ms -
mV
FEO output value
mV
µA -
V-
ms -
mV -
mV -
* Standards are with VB reference.
** When FON is LOW, 8 voltage is VB.
** The ramp wave begins at the bottom.
** The loop will not turn on when the ramp wave is at the bottom.
** Pin 8 is charged rapidly when the loop turns on.
*
5 Page 
Optical disc ICs
(4) DET block
BA6387K
RFO
9
+
−
37k 88k
vsc
+
−
Bottom hold (long)
Charging current 0.1µA
Bottom hold (short)
Charging current 1µA
Peak hold (long)
Peak hold (short)
Discharging current 0.1µA Discharging current 1µA
1.2V
17.8p
30p
19
3300p
20
3300p
Fig.7 DET block
15
14
PL-VSC
BL + (PL - BL) ⋅ 37k ⋅ (37k + 88k)
Peak hold (long) (PL)
Bottom hold (long) (BL)
Peak hold (short) (PS)
Bottom hold (short) (BS)
Mirror
Defect
Fig.8 Defect and mirror generation
When defect is high, the bottom hold (long) charging
current is 50µA. The scratch depth (VSC) can be adjusted
by changing the resistance at pin 9.
VSC =
12
R9 + 200
× 4k
The peak hold voltage will not go below (GND + 0.9V)
and the bottom hold voltage will not go below (VCC –
0.9V).
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet BA6387K.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BA6387K | Preservo amplifier for CD players | ROHM Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |