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參數資料
| 型號： | U4286BM-BFPG3 |
| 英文描述： | AM / FM-PLL |
| 中文描述： | 調幅/調頻鎖相環 |
| 文件頁數： | 2/9頁 |
| 文件大小： | 113K |
| 代理商： | U4286BM-BFPG3 |
TELEFUNKEN Semiconductors
U4286BM
Preliminary Information
Rev. A1: 19.08.1996
2 (9)
Pin Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
U 4286 BM
SCL
SDA
AS
SWO 1
SWO 2
FMOSC
GND 2
GND
OSCOUT
OSCIN
PDAMO
PDAM
PDFM
PDFMO
AMOSC
V
DD
94 7908 e
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
V
DD
SCL
SDA
AS
SWO 1
SWO 2
FMOSC
GND 2
AMOSC
PDFMO
PDFM
PDAM
PDAMO
OSCIN
OSCOUT Oscillator output
GND 1
Ground 1 (digital)
Function
Supply voltage
I
2
C bus clock
I
2
C bus data
Address selection
Switching output 1
Switching output 2
FM oscillator input
Ground 2 (analog)
AM oscillator input
FM analogue output
FM current output
AM current output
AM analogue output
Oscillator input
Functional Description
The U4286BM is controlled via the 2-wire I
2
C bus. For
programming there are one module address byte, two
subaddress bytes and five data bytes.
The module address contains a programmable address bit
A 1 which with address select input AS (Pin 4) makes it
possible to operate two U4286BM-B in one system. If bit
A 1 is identical with the status of the address select input
AS, the chip is selected .
The subaddress determines which one of the data bytes is
transmitted first. If subaddress of R - divider is
transmitted, the sequence of the next data bytes is DB 0
(Status), DB 1 and DB 2.
If subaddress of N - divider is transmitted, the sequence
of the next data bytes is DB 3 and DB 4. The bit
organisation of the module address, subaddress and 5 data
bytes are shown in figure 2.
Each transmission on the I
2
C bus begins with the
“START”- condition and has to be ended by the “STOP”-
condition (see figure 3).
The integrated circuit U4286BM has two separate inputs
for AM and FM oscillator. Pre-amplified AM signal is
directed to the 16 bit N-divider via AM/ FM switch,
whereas (pre-amplified) FM signal is first divided by a
fixed prescaler (:2). AM/ FM switch is controlled by
software. Tuning steps can be selected by 16 bit
R-divider. Further there is a digital memory phase
detector. There are two separate current sources for AM
and FM amplifier (charge pump) as given in electrical
characteristics. It allows independent adjustment of gain,
whereby providing high current for high speed tuning and
low current for stable tuning.
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相關代理商/技術參數 |
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|---|---|
| U4287BM-BFS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| U4288BM-AFS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Phase-Locked Loop |
| U4289BM | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AM/FM PLL with 1 Switch |
| U4289BM-AFP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AM / FM - PLL |
| U4289BM-AFPG3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AM / FM - PLL |
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