ATR2732-40-EK2 Atmel, ATR2732-40-EK2 Datasheet - Page 5

• Manufacturer Part Number: ATR2732-40-EK2
• Description: KIT MEDIA/EVAL ATR2732+ATR2740
• Manufacturer: Atmel
• Type: DAB Digital Processingr

Specifications of ATR2732-40-EK2

• For Use With/related Products: ATR2740, ATR2732
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4918AS–DAB–03/06
This filter has an automatic tuner adjustment; that is, the tuning-voltage-generation block adjusts
the pass band of this filter to the desired frequency. After passing this filter, the RF signal is
down-mixed to a fixed IF frequency of 38.912 MHz. The IF signal is amplified and passed to a
SAW filter (5). The first IF variable-gain amplifier is followed by an IF filter at position (6). This fil-
ter is used as an anti-alias-filter. Finally, the DAB signal is amplified using the 2nd IF amplifier.
The signal leaves the front-end IC at (7), giving the signal to the DAB baseband IC.
Figure 3-1.
3)
1)
2)
Functional Block Diagram with Labelled Inputs and Outputs
VCO
VCO
frac. PLL
L-band
PLL
VHF
4)
Vtune
Gain
gen.
cntl
ATR2732 [Preliminary]
5)
A
D
SPI interface
Control unit
RSSI
6)
PWR
cntl
7)
5