300MHz to 450MHz ASK Receiver
with Internal IF Filter
Pin Description (continued)
PIN
13
14
15
16
17
18
19
20
NAME
DCOC
OPP
DFFB
DSP
DSN
PDOUT
V DD
DATAOUT
EP
FUNCTION
DC Offset Capacitor Connection. This is for the RSSI amplifier. Connect a 1μF capacitor from this pin
to ground (see the Typical Application Circuit ).
Noninverting Op-Amp Input. This is for the Sallen-Key data filter. Connect a capacitor from this pin to
GND. The value of the capacitor is determined by the data-filter bandwidth.
Data-Filter Feedback Input. Input for the feedback of the Sallen-Key data filter. Connect a capacitor
from this pin to DSP. The value of the capacitor is determined by the data-filter bandwidth.
Positive Data-Slicer Input. Connect a capacitor from this pin to DFFB. The value of the capacitor is
determined by the data-filter bandwidth.
Negative Data-Slicer Input
Peak-Detector Output
Power-Supply Voltage Input. For 5.0V operation, V DD is the input to an on-chip voltage regulator
whose 3.2V output drives AVDD. Bypass to ground with a 0.1μF capacitor as close as possible to the
device (see the Typical Application Circuit ).
Digital Baseband Data Output
Exposed Pad. Internally connected to ground. Connect to a large ground plane using multiple vias to
maximize thermal and electrical performance.
Functional Diagram
DATAOUT
20
DSN
17
PDOUT
18
DSP
16
OPP
14
DFFB
15
XTAL1 3
PEAK
XTAL2 2
ENABLE 1
V DD 19
AVDD 4
DVDD 12
LNAIN 5
3.2V
REGULATOR
PLL
AGC
DETECTOR
REF
REF
MAX7036
EP*
6 8 7
10
9
11
13
LNAOUT
MIXIN2
IFC1
IFC2
IFC3
DCOC
MIXIN1
*EXPOSED PAD.
CONNECT TO GND.
_______________________________________________________________________________________
7
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