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ATR4255P 数据表(PDF) 4 Page - ATMEL Corporation

部件名 ATR4255P
功能描述  FM Double-conversion System
PDF  34 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

ATR4255P 数据表(HTML) 4 Page - ATMEL Corporation

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4
4883B–AUDR–01/06
ATR4255P
Table 2-1.
Pin Description
Pin
Symbol
Function
1MX1FMA
1st mixer FM input A
2MX1FMB
1st mixer FM input B
3
MX1AMB
1st mixer AM input B
4
GNDMX
Ground 1st mixer, preamplifier AGC
5
FMAGC
FM preamplifier AGC
6
AMVREG
AM control voltage
7
AMAGC
AM preamplifier AGC
8
AMPLPF
AM AGC LP filter
9
METER
Field strength output
10
ADJAC
Adjacent channel detection output
11
MPX
Multiplex signal
12
V57
5.7V reference voltage
13
OSCB
Oscillator basis
14
OSCE
Oscillator emitter
15
GNDOSC
Oscillator ground
16
OSCOUT
Oscillator output
17
EN
3-wire bus enable
18
CLK
3-wire bus clock
19
DATA
3-wire bus data
20
IF2OUT
2nd IF amplifier output
21
INT
Interrupt, stop signal
22
MX2LO
10.25 MHz input for 2nd mixer
23
MX2OB
2nd mixer output B
24
MX2OA
2nd mixer output A
25
GND
Ground
26
MX2IN
2nd mixer input
27
V3P
3V reference for AMPIN, AMIFAGC, Control, IF2IN
28
IF2IN
2nd IF amplifier input
29
V3
3V reference for IF1OUT, MX2IN
30
IF1OUT
1st IF amplifier output
31
DEV
Deviation detect output, test output
32
OPLPF
Operating point LPF
33
IF1AMI
1st IF AM amplifier input
34
SMUTE
Soft mute control input
35
IFAGCH
IF AGC LP filter high time
36
IFAGCL
IF AGC LP filter low time constant
37
FILADJ
Filter adjust
38
IF1FMI
1st IF FM amplifier input
39
IF1REF
1st IF and MX1OUT reference, MX1AMA, MX1AMB
40
MULTIP
Multipath detection output
41
MX1AMA
1st mixer AM input A
42
VS
Supply voltage
43
MX1OA
1st mixer output A
44
MX1OB
1st mixer output B



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