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U4256BM-R 数据表(PDF) 2 Page - ATMEL Corporation

部件名 U4256BM-R
功能描述  Frequency Synthesizer for Radio Tuning
PDF  19 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

U4256BM-R 数据表(HTML) 2 Page - ATMEL Corporation

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2
U4256BM-R
4562C–AUDR–08/04
Figure 2. Block Diagram
Pin Description
Pin
Symbol
Function
1
PDO
Phase detector output
2
PD
Pulsed current output
3
DAC1
Digital-to-analog converter 1
4
DAC2
Digital-to-analog converter 2
5
DAC3
Digital-to-analog converter 3
6
VS
Supply voltage analog part
7
SWO1
Switching output 1
8
SWO2
Switching output 2
9
SWO3
Switching output 3
10
SWO4
Switching output 4
11
GND
Ground, digital part
12
OSCOUT
Reference oscillator output
13
OSCIN
Reference oscillator input
14
V5
Capacitor band gap
15
MX2LO
Oscillator buffer output
16
DATA
Data input
17
CLK
Clock
18
EN
Enable
19
FMOSCIN
FM-oscillator input
20
GNDan
Ground, analog part
FM-
preamp
N-
divider
Phase
detector
Current
sources
DAC1
AM/FM
DAC2
DAC3
3-bit
V
Ref
SWO1 SWO2 SWO3
SWO4
Switching outputs
R-
divider
Oscillator
OSC
buffer
3W-
bus
interface
16
17
18
13
12
15
19
7
8
9
10
OSCIN
OSCOUT
MX2LO
CLK
DATA
EN
FMOSCIN
6
1
2
5
4
3
V
Ref
14
11
20
GNDan
V5
GND
DAC3
DAC2
DAC1
VS
PDO
PD
Tuning
DAC
Bandgap



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