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參數資料
| 型號： | MC44355DW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 消費家電 |
| 英文描述： | MULTI.STANDARD AND PAL/NTSC MODULATOR ICs |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 封裝： | PLASTIC, SO-20 |
| 文件頁數： | 13/20頁 |
| 文件大小： | 438K |
| 代理商： | MC44355DW |
MC44353 MC44354 MC44355
13
MOTOROLA ANALOG IC DEVICE DATA
16 Amp In
Negative input of operation
amplifier and phase detector
charge pump output
20 Xtal
Crystal oscillator
(4.0 MHz)
18 SCL
Clock input (I2C bus)
19 SDA
14 Mod Gnd
13 Video In
Input for baseband video. Signal
modulates the RF carrier.
11 Audio In
Input for sound. Signal
modulates the sound carrier.
Snd Fil 8
Phase/Freq. detector
charge pump output
Figure 17. Pin Circuit Schematic
Op Out 1
Operational amplifier
output which provides
the tuning voltage
VCCD 3
Digital circuit supply
Osc Gnd 7
Oscillator Ground
500
132 k
20 V
VCC
96 k
96 k
1/2 VCC
500
132 k
20 V
5.0 V
100
2.0 k
10 k
20 V
20 V
20 V
50
1.5 k
ACK
VCC
96 k
96 k
1/2 VCC
Osc Gnd 4
Oscillator Ground
Pre–Em 10
Frequency selective filter to
shape sound modulation depth.
Snd Tun 9
Sound carrier oscillator
L/C tuned circuit
5
6
Bal Osc
Balanced cross coupled oscillator
terminals. L/C resonance circuit
12 VCCA
Audio supply voltage
15 RF Out
RF output
16 VCC Mod
17 Mod Gnd
VCCA
72
490
VCCA
VCCA
24.5 k
24.5 k
50 k
1.0 p
5.0 V
5.0 V
5.0 V
5.0 V
5.0 V
5.0 V
Audio
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