- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382704 > U4280 2-WIRE FACTORY PROGRAMMED W/TIN PLATING PDF資料下載
參數(shù)資料
| 型號： | U4280 |
| 英文描述： | 2-WIRE FACTORY PROGRAMMED W/TIN PLATING |
| 中文描述： | 調(diào)幅/調(diào)頻-鎖相環(huán) |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 172K |
| 代理商： | U4280 |
U4280BM
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A1, 10-Apr-97
1 (9)
AM / FM - PLL
Description
The U4280BM is an integrated circuit in BICMOS
technology for frequency synthesizer. It performs all the
functions of a PLL radio tuning system and is controlled
by I
2
C bus. The device is designed for all frequency
synthesizer applications of radio receivers, as well as
RDS (
R
adio
D
ata
S
ystem) applications.
Features
Frequency range up to 150 MHz
Pre-amplifier for AM and FM
Fine tuning steps:
AM
FM
1kHz
2 kHz
Two programmable 16-bit divider,
adjustable from 2 to 65535
Reference oscillator up to 15 MHz
5 programmable switching outputs,
4 are open drain outputs up to 15 V
Phase detector with separate outputs for AM and FM
Controlled via I
2
C bus
Ordering Information
Extended Type Number
U4280BM-B
U4280BM-BFL
Package
DIP20
SO20
Remarks
Block Diagram
Shift register
Latch
Latch
I
2
C – BUS
interface
AM / FM–
switch
Preamplifier
N – Divider
Analog
outputs
Preamplifier
: 2
Lock
detector
Current
sources
Phase
detector
Latch
Status
R – Divider
Switching outputs
5
6
7
8
9
PRT
SWO1 SWO2 SWO3 AM/FM
14
13
16
17
15
PDFM
PDAM
PDFMO
PDAMO
LD
Oscillator
18
19
OSCOUT
2
3
4
SCL
SDA
AS
12
AMOSC
10
FMOSC
11
GND2
20
GND1
1
V
DD
13346
OSCIN
Figure 1. Block diagram
相關PDF資料 |
PDF描述 |
|---|---|
| U4280BM | AM / FM - PLL |
| U4283BM-BFP | Consumer IC |
| U4283BM | AM / FM - PLL |
| U4283BM-BFL | AM / FM - PLL |
| U4283BM-BFLG3 | AM / FM - PLL |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| U4280BM | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:AM / FM - PLL |
| U4280BM-B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:AM / FM - PLL |
| U4280BM-BFL | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:AM / FM - PLL |
| U4283BM | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:AM / FM - PLL |
| U4283BM-BFL | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:AM / FM - PLL |
發(fā)布緊急采購，3分鐘左右您將得到回復。