U2731B-NFN Atmel, U2731B-NFN Datasheet - Page 2

• Manufacturer Part Number: U2731B-NFN
• Description: IC FRONT-END DAB 8.5V 44-SSOP
• Manufacturer: Atmel

Specifications of U2731B-NFN

• Package / Case: 44-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Frequency: -
• Rf Type: -

Figure 1. Block Diagram
2
C1VCO
B2VCO
B1VCO
C2VCO
OSCO
CPRF
RFA1
RFA2
RFB1
RFB2
FREF
OSCI
U2731B
16
12
13
14
15
32
33
34
35
42
43
5
th2
VCO
9-bit latch
ADR
44
Simple two-wire bus interface/control
th1
V
AGC
Programmable
13-bit counter
Fractional-N
15-bit latch
Reference
counter
control
SCL
N/N+1
1
1/
4-bit latch
2
SDA
SAW1 SAW2
18
2
4-bit latch
4-bit latch
D/A
19
MUX
SWA
IFIN1
24
3
4-bit latch
3-bit latch
Switches
detector
Tristate
phase
SWC
D/A
IFIN2
MUX
23
6
SWB
x1/x2
V
CPIF
4
AGC
28
Programmable
charge pump
4-bit latch
8-bit latch
detector
Lock
CAO
D/A
D/A
7
8-bit latch
th3
D/A
CCO
8
10, 11, 17, 30, 31,36, 37
8-bit latch
CBO
D/A
20, 25, 38
9
26
27
21
22
29
41
39
40
IF
AGCIN2
IF
AGCIN1
SLI
WAGC
IFOUT
VS
GND
PLCK
PD
VD
4671C–DAB–06/04