U2730B-N Datasheet, PDF (2/17 Pages) ATMEL Corporation – L-band Down-converter for DAB Receivers

Figure 1. Block Diagram
TH
17
18
AGC
U
RF ²⁶
25
NRF
TANK ⁵
VREF ⁴
VCO
Power save
(analog part)
Power
down
1
PSM
15
OSCB
IF
VCC1 VCC3 VCC4 VCC2 GND
19
Analog
part
3
20 28
9
Internal 5 V supply voltage
for frequency synthesizer _Voltage
stabilizer
Band-
gap
6, 7, 8, 21,
22, 23, 24
14
PLCK
RF counter
: 2464
Reference
counter
: Nref
Lock
detector
Tristate
phase
detector
Charge
pump
200 m/300 m
16
OSCE
Test
interface
11
TI
Control
interface
10 27 2
CI SI1 SI2
20k
12 _CD
13 _PD
2 U2730B-N
4719A–DAB–05/03