ATR4258 Datasheet, PDF (2/38 Pages) ATMEL Corporation – AM/FM RECEIVER IC

Figure 1. Block Diagram
IF1FMI
IF1AMI
V3
MX2OB
MX1OA MX1OB
IF1REF
IF1OUT MX2IN
MX2OA
43
44
38 39 33 30 29 26 23
24
IF2IN V3P
28
27
AM
MX1AMA
MX1AMB
AMAGC
AMVREG
AMPLPF
41
3
7
AGC
6
8
MX1FMA
1
MX1FMB
2
GNDMX
4
OSCOUT
16
FM
Divider
FM
AM
V3
AGC
Divider
2...10
Offset
Noise-
blanker
Adj.
Chan.
Stop
FM
Dem.
GNDOSC
15
OSCE
14
OSCB
13
OSC
V3
Bandgap
Bus
12 25 42 5 17 18
19 9
V57 VS
EN DATA METER
GND FMAGC CLK
22 10
MX2LO ADJAC
INT
21
INT
AM
Dem.
OPLPF
32
AGC
IFAGCL
36
IFAGCH
35
IF2OUT
20
Automatic
Adjustment ₃₇
FILADJ
Soft
Mute
Multi-
path ₄₀
MULTIP
MPX
11
34
SMUTE
Dev.
Ana.
31
DEV
2 ATR4258
4838A–AUDR–10/04