參數(shù)資料
型號: TDA7427
廠商: STMICROELECTRONICS
元件分類: PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 200 MHz, PDIP20
封裝: DIP-20
文件頁數(shù): 15/21頁
文件大?。?/td> 350K
代理商: TDA7427
PIN DESCRIPTION (TDA7427/D)
PIN
SYMBOL
DESCRIPTION
INPUT/OUTPUT
1
LP_FM
Filter OPAMP input, charge pump output (FM mode)
2
LP_HC
Filter OPAMP input, charge pump output (high current
mode)
3
LP_AM
Filter OPAMP input, charge pump output (AM mode)
4
VREF
OPAMP reference voltage
5
OSCIN
Oscillator reference clock input
6
OSCOUT
Oscillator output
7
DOUT3
Open collector output
8
SCL
I
2C bus clock input
Input
9
SDA
I
2C bus data I/O
Input/output
10
IF_AM
IF counter input (AM mode)
Analog input
11
IF_FM
IF counter input (FM mode)
Analog input
12
SSTOP
IF counter result output
Output
13*
DOUT1
Digital output
Push-pull output
13*
INLOCK
Inlock detector output
Output
14
HFREF
HF reference
15
VDD1
Positive power supply 5V
Supply
16
FM_IN
High frequency input FM
Analog input
17
AM_IN
High frequency input AM
Analog input
18
GND
Analog digital ground
Supply
19
VDD2
Positive power supply 10V
Supply
20
LPOUT
Filter input, change pump output
* Pin function is userdefined by software
TDA7427
3/21
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