ATR2731 Datasheet, PDF (3/26 Pages) ATMEL Corporation – DAB One-chip Front End

ATR2731
Figure 1-1. Block Diagram
SAW1 SAW2
18
19
IFIN1 IFIN2 CPIF
24
23
28
16
CPRF
th2
12
RFA1
13
RFA2
14
RFB1
15
RFB2
32
C1VCO
33
B2VCO
34
B1VCO
33
C2VCO
VCO
th1
V_AGC
V_AGC
÷1/÷2
x1/x2
D/A
D/A
D/A
4-bit latch
4-bit latch
4-bit latch
4-bit latch
26 ^IF
AGCIN2
27
IF
th3
AGCIN1
21
SLI
22
WAGC
29
IFOUT
20, 25, 38
VS
10, 11, 17, 30, 31, 36, 37
GND
42
OSCI
43
OSCO
5
FREF
Reference
counter
Fractional-N
control
Programmable
13-bit counter
÷ N/N+1
Lock
detector
Tristate phase Programmable
detector
charge pump
41
PLCK
39
PD
40
VD
4-bit latch
3-bit latch
8-bit latch
8-bit latch
8-bit latch
9-bit latch
15-bit latch
Simple two-wire interface/control
44
ADR
1
SCL
2
SDA
MUX MUX
Switches
3 64
SWA SWC SWB
D/A
7
CAO
D/A
8
CCO
D/A
9
CBO
3
4904A–DAB–03/06