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參數(shù)資料
| 型號(hào)： | MC44871DTB |
| 廠商： | MOTOROLA INC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | PLL TUNING CIRCUIT WITH HIGH SPEED I2C BUS AND 30 V TUNING SUPPLY |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | PLASTIC, TSSOP-16 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大?。?/td> | 198K |
| 代理商： | MC44871DTB |
MC44871
5
MOTOROLA ANALOG IC DEVICE DATA
16 Amp In
Negative input of operational
amplifier and phase detector
charge pump output
15 Xtal
Crystal oscillator
(3.2 MHz or 4.0 MHz)
14 SCL
Clock input (I2C bus)
13 SDA
12 ADD
Chip Address
11 VCC
circuit (5.0 V)
10 ADC
Three bit control for AFC
9 B4
NPN Buffer
B0 8
Figure 4. Pin Circuit Schematic
VTUN 1
Operational amplifier
output which provides
the tuning voltage
CP 2
Converter output
(Charge Pump)
HF1 3
HF2 4
Gnd 5
Circuit ground
B2 6
B1 7
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
20 V
20 V
6.0 k
5.0 V
5.0 V
5.0 V
2.0 k
2.0 k
1.2
…
1.8 V
5.0 V
5.0 V
“On”/“Off”
32 V
1
2
6
20 V
“On”/“Off”
“On”/“Off”
20 V
20 V
1.5 k
VCC
ACK
VCC
96 k
96 k
1/2 VCC
VCC
150 k
50 k
10 k
20 V
10 k
20 V
VCC
200
20 V
“On”/“Off”
Inputs to
presealer
PNP Band
Buffers
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