- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382702 > U2733B-C Fractional-N Frequency Synthesizer for DAB Tuner PDF資料下載
參數(shù)資料
| 型號(hào)： | U2733B-C |
| 英文描述： | Fractional-N Frequency Synthesizer for DAB Tuner |
| 中文描述： | 分?jǐn)?shù)N頻率合成器的DAB調(diào)諧器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 157K |
| 代理商： | U2733B-C |
U2733B-C
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A1, 21-Aug-96
1 (14)
Fractional-N Frequency Synthesizer for DAB Tuner
Description
The
U2733B-C
fractional-N frequency synthesizer circuit fabricated in
TEMIC’s advanced UHF5S technology. Designed for
applications in DAB receivers, it controls a VCO to
synthesize frequencies in the range of 70 to 500 MHz in
a 16 kHz raster; four different reference divide factors can
is
a
monolithically
integrated
be selected. The lock status of the phase detector is
indicated at a special output pin, six switching outputs can
be addressed. An internal frequency doubler provides an
output signal having twice the frequency of the reference
oscillator. All functions of this IC are controlled by
I
2
C bus.
Features
Microprocessor controlled via I
2
C bus
4 addresses selectable
Four reference divide factors selectable:
1024, 1120, 1152, 1536
Effectively
Programmable 15-bit counter 1:2048 to 1:32767
effectively
Three state phase detector with programmable charge
pump
Superior phase noise performance
Deactivation of tuning output programmable
6 switching outputs (open collector)
Reference frequency doubler (open collector output)
Lock status indication (open collector)
Fully compatible to U2753B-C
SSO20 package
Block Diagram
Reference counter
19
20
11
12
13
14
15
6
7
8
4
NREF
5
18
17
RF
NRF
PLCK
PD
VD
3
1
2
I2C Bus –Interface / Control
REF
9
16
Frequency doubler
x 2
FDO
10
NFDO
N/N=1
Fractional N
control
Prog.
13 Bit counter
2 Bit
latch
5 Bit latch
Three State
Phase
Detector
Lock detector
Prog.
charge pump
4 Bit latch
7 Bit latch
MUX
MUX
Switches
SWC SWD SWE SWF SWG SWH
GND
VS
ADR
SCL
SDA
12476
Figure 1. Block diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| U2739M | DAB One-Chip Channel- and Source / Data Decoder |
| U2740B | UHF AM/FM Transmitter |
| U2740B-BFP | UHF AM/FM Transmitter |
| U2760B | CT2-RX/TX IC |
| U2760B-AFS | CT2-RX/TX IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| U2739M | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:DAB One-Chip Channel- and Source / Data Decoder |
| U2739M-B | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:DAB One-Chip Channel- and Source Decoder |
| U2739M-BFC | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:DAB One-Chip Channel- and Source Decoder |
| U2739M-BFT | 功能描述:IC DECODER 1CHAN/SOURCE 100-PQFP RoHS:否 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
| U274 | 功能描述:開關(guān)配件 Switch Hardware RoHS:否 制造商:C&K Components 類型:Cap 用于:Pushbutton Switches 設(shè)計(jì)目的: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。