u2730b-n ATMEL Corporation, u2730b-n Datasheet - Page 2

• Manufacturer Part Number: u2730b-n
• Description: L-band Down-converter For Dab Receivers
• Manufacturer: ATMEL Corporation

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