Datasheet
MC33411A/B
13
MOTOROLA RF/IF DEVICE DATA
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
PIN FUNCTION DESCRIPTION (continued)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Description
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
Description
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
Symbol/Type
ÁÁÁÁ
ÁÁÁÁ
Pin
29 PAO+
(Output)
PAO+
29
Audio
V
CC
Output of the second power amplifier. This amplifier
is set for unity inverting gain and is driven by PAO–.
Maximum swing is 2.9 V
pp
and maximum output
current is >5.0 mA peak. DC level is ≈1.5 V.
30 PAO–
(Output)
Same as Pin 29. Output of the first power amplifier. Its gain is set
with external resistors and capacitors from this pin
to PAI. Output capability is the same as Pin 28.
31 Gnd PA Ground pin for the power amplifier outputs. A direct
connection to a ground plane is strongly
recommended.
32 PAI
(Input)
PAI
32
V
CC
Audio
2.5 µA
V
B
Inverting input of the power amplifier. Gain and
frequency response are set with external resistors
and capacitors from this pin to the audio source and
to PAO–.
33 E Out
(Output)
Rx Audio
Output
33
Audio
V
CC
V
B
Expander output. This output is sensitive to load
capacitance. Maximum output signal level is
≈2.5 V
pp
. Maximum output current is >1.0 mA.
34 E
cap
E
cap
34
V
CC
Audio
V
CC
Audio
40 k
E
cap
is the expander rectifier filter capacitor pin.
Connect an external filter capacitor between V
CC
audio and E
cap
. The recommended capacitance
range is 0.1 to 1.0 µF. The suggested value is
0.47 µF.
35 E In
(Input)
E In
35
V
CC
Audio
V
B
30 k
The expander input pin is internally biased and has
input impedance of 30 kΩ.
36 Rx Out
(Output)
Rx Out
36
V
CC
Audio
V
B
Rx Out is the Rx audio output. An internal low–pass
filter has a –3.0 dB bandwidth of 4.0 kHz.
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
nc...