ATA5761 ATMEL Corporation, ATA5761 Datasheet - Page 2

• Manufacturer Part Number: ATA5761
• Description: UHF Ask/fsk Receiver
• Manufacturer: ATMEL Corporation

Figure 1-2.
2
ATA5760/ATA5761
Block Diagram
LNAGND
LNAREF
LNA_IN
CDEM
DGND
AGND
DVCC
AVCC
SENS
LNA
Rssi
fg = 2.2 MHz
f0 = 950 kHz/
and data filter
Poly-LPF
demodulator
fg = 7 MHz
FSK/ASK-
4. Order
1 MHz
LPF
RSSI IF
Amp.
IF
Amp.
Limiter out
f
:2
Sensitivity-
reduction
Dem_out
LC-VCO
f
Standby logic
Loop-
filter
:256
Polling circuit
control logic
FE
and
interface
Data -
XTO
CLK
IC_ACTIVE
DATA
POLLING/_ON
DATA_CLK
XTAL
4896D–RKE–08/08