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參數(shù)資料
| 型號(hào)： | AT78C1505 |
| 廠商： | Atmel Corp. |
| 英文描述： | DVD/CD Read Preamplifier(DVD/CD可讀前置放大器) |
| 中文描述： | DVD / CD光碟讀取放大器（DVD / CD光碟可讀前置放大器） |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 65K |
| 代理商： | AT78C1505 |
AT78C1505
2
Block Diagram
PGC
VREF
A
2
SDEN
SDCLK
SDATA
SERIAL
REGISTER
TransZ Amp
R
TZ
-A
B
TransZ Amp
R
TZ
-A
C
TransZ Amp
R
TZ
-A
D
TransZ Amp
R
TZ
-A
RFP
RFN
Programmable
outputs
2X
A or A + C
B or A + B
C or C + D
D or B + D
2
2
2
E
TransZ Amp
3R
TZ
_
+
VREF
F
TransZ Amp
3R
TZ
_
+
offset DAC
7
VREF
1.2V
LPWR
TransZ Amp
3R
TZ
_
+
VREF
LPWRO
WRITE
-
-
-
-
gain DAC
4
-
offset DAC
7
-
gain DAC
4
-
offset DAC
7
-
gain DAC
4
-
gain
reduction
for all transZ
amps
AP
AN
BP
BN
CP
CN
DP
DN
EOUT
FOUT
offset DAC
TPPP
TPPN
RTZ user selectable: 3.7K, 4.15K or 14.15K
Write mode RTZ = 500
(A + D) - (B + C)
offset DAC
offset DAC
offset DAC
IDSEL
note*
*RFP/N are the total fast diode sum (A + B + C + D) when IDSEL is low. When IDSEL is high
RFP/N output is right channel minus the left channel (A+D) - (B+C).
**
to other circuitry
2X
2X
2X
1X
note**
A + C is referred to as diagonal 1 (DIA1)
B + D is referred to as diagonal 2 (DIA2)
A + B is referred to as the right channel (RCH)
C + D is referred to as the left channel (LCH)
(A + D) - (B + C) is referred to as the Tangential Push Pull (TPP) signal (i.e. this is the front minus
the back of the array).
PGC
PGC
PGC
Configuration
Select output
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