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參數(shù)資料
| 型號(hào)： | MC44825D |
| 廠商： | MOTOROLA INC |
| 元件分類： | XO, clock |
| 英文描述： | TV AND VCR PLL TUNING CIRCUITS WITH 1.3 GHz PRESCALER AND I2C BUS |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 1300 MHz, PDSO16 |
| 封裝： | PLASTIC, SO-16 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 158K |
| 代理商： | MC44825D |
MC44824/25
4
MOTOROLA ANALOG IC DEVICE DATA
MC44824/25
Figure 1. HF Sensitivity Test Circuit
Device is in test mode. B2 and B7 are “On”.
Sensitivity is level of HF generator on 50
load.
SDA, SCL
Gnd
B7
B2
Bus Controller
HF Generator
HF Out
Gnd
VCC
5.0 V
Frequency
Counter
In
I2C Bus
470
470
50
50
Cable
1.0 nF
HF
VCC
1.0 nF
HF
VCC
2
1.3 GHz
500 MHz
–j +j
0
2
0.5
1
0.5
1
2
0.5
1
Figure 2. Typical HF Input Impedance
ZO = 50
1.0 GHz
50 MHz
Data Format and Bus Receiver
The circuit receives the information for tuning and control
via the I2C bus. The incoming information, consisting of a
chip address byte followed by two or four data bytes, is
treated in the I2C bus receiver. The definition of the
permissible bus protocol is shown below:
1_STA
2_STA
3_STA
CA
CA
CA
CO
FM
CO
BA
FL
BA
STO
STO
FM
FL
STO
4_STA
STA = Start Condition
STO = Stop Condition
CA = Chip Address Byte
CO = Data Byte for Control Information
BA = Band Information
FM = Data Byte for Frequency Information (MSB’s)
FL = Data Byte for Frequency Information (LSB’s)
CA
FM
FL
CO
BA
STO
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| MC44826D | TV AND VCR I2C PLL TUNING CIRCUIT WITH 1.3 GHz PRESCALER AND MIX/OSC DECODER |
| MC44827BDTB | LOW-POWER PLL TUNING CIRCUIT |
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| MC44829D | TV AND VCR I2C PLL TUNING CIRCUIT WITH 1.3 GHz PRESCALER AND MIX/OSC DECODER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC44826D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:TV AND VCR I2C PLL TUNING CIRCUIT WITH 1.3 GHz PRESCALER AND MIX/OSC DECODER |
| MC44827 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW-POWER PLL TUNING CIRCUIT |
| MC44827BDTB | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW-POWER PLL TUNING CIRCUIT |
| MC44827DTB | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Motorola Inc 功能描述: |
| MC44829 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:TV AND VCR I2C PLL TUNING CIRCUIT WITH 1.3 GHz PRESCALER AND MIX/OSC DECODER |
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