Datasheet
MC33411A/B
14
MOTOROLA RF/IF DEVICE DATA
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PIN FUNCTION DESCRIPTION (continued)
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Description
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Description
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Symbol/Type
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Pin
37 RSSI In
(Input)
RSSI In
37
V
CC
Audio
Voltage input to RSSI A/D converter. Full scale is 0
to 1.6 V.
38 Rx Audio In
(Input)
Rx Audio
In
38
V
CC
Audio
600 k
V
B
RC
Network
Input to the Rx Audio Path. Input impedance is
600 kΩ. Input signal must be capacitor coupled
39 DS In
(Input)
DS In
39
V
CC
Audio
250 k250 k
Input for the digital data from the RF Receiver
section. Input impedance is 250 kΩ. Hysteresis is
internally provided. Input signal level must be
between 50 and 700 mVpp.
40 Gnd Audio Ground pin for the audio section. A direct
connection to a ground plan is strongly
recommended.
41 LO2 Out
(Output)
LO2 Out
41
LO2
V
CC
LO2
V
CC
LO2
V
CC
50
2.5 mA
Buffered output of the 2nd LO. This high frequency
output is a current, requiring an external pullup
resistor.
42 LO2 V
CC
(Input)
42
LO2
Section
V
CC
100.0110
Supply pin for the LO2 section. Allowable range is
2.7 to 5.5 V and must be within 0.5 V of all other
V
CC
pins. Good bypassing is required and isolation
with a 10 Ω resistor is recommended.
NOTE: 1. All V
CC
pins must be within ±0.5 V of each other.
ARCHIVE INFORMATION
ARCHIVE INFORMATION
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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