UAA4009 ,Remote Control Receiver£77
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UAA4009
REMOTE CONTROL RECEIVER
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UAA4009 ,Remote Control ReceiverGENERAL DESCRIPTION
PPM DEMODULATION
The receiver operates on a timescale fixed by an in-
te ..
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UAA4009
Remote Control Receiver
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UAA4009
REMOTE CONTROL RECEIVER
ON-CHIP OSCILLATOR
USED WITH IR OR ULTRASONIC TRANSMlS-
SION SYSTEM
5 BITS PPM MODULATION, FIRSTTRANSMIT-
TED MUST BE ZERO
2 SUCCESSIVE CODEWORDS COMPARISON
12 CHANNELS SET EITHER BY REMOTE
CONTROL OR OUTPUT PIN GROUNDING
MUTING DURING CHANNEL CHANGE
PRIORITY CHANNEL SET BY EXTERNAL CA-
PACITOR
Vcc=12V ____ 12Vtyp.
loo: 15 mA J I
PPM PULSES: ; - - 0V
CHANNEL OUTPUT : OPEN NPN COLLECTOR
WITH FEED-BACK INFORMATION
STAND-BY OUTPUT : OPEN NPN COLLEC-
Vmax, OUTPUT I 35 V
DESCRIPTION
UAA4009 is an l2L/BIPOLAR circuit for use as a re-
ceiver of remote control signals for television control
applications.
BLOCK DIAGRAM
a This device :
n receives 15 of the 32 codes transmitted by the
UAA4000 (PPM)
u commutes tuning voltage for 12 TV channels
a provides 0 to 6 V voltage (16 steps) for one elec-
Ironic potentiometer
I: gives "stand-by" information
UAA4009
DIP1 8
(Plastic Package)
CHANNEL1 CHANNEL 12 STANDBY
r-a, _r-'; n
T15 T10 tare
_________ J
Flierlop Prog. Standby
GND Power V
. 1 uluun:
V Supp y counter
a Decoder czzi) Demux.
cjjceli..,.i'ici",'
Osc PPM
VOLUME
CONTROL
OUTPUT
E88UAA4009-01
November 1988
UAA4009
PIN CONNECTIONS
cm 1 V "Cl cna
Ch5 C 2 'Cl are
one C a 16 3 cm
cm C 4 15 Cl v+
GND E 5 14 j Osc
Ch8 C 6 13 Cl PPM input
cm; C 7 12%| VOL
cum C 8 11 S-B
cm cy 10 Cht2
E88UAA4009-02
GENERAL DESCRIPTION
PPM DEMODULATION
The receiver operates on a timescale fixed by an in-
ternal oscillator and its external timing components.
Frequency is linked with transmission rate.
Following numerical values are given at f = 5.1 KHz.
For example, 5.1 KHz ensures potentiometer up or
down travelling to be completed in about 5.5 s and
channel 1 is set in 120 ms.
Each pulse that is received starts a counter. Input is
masked for first 3.5 ms. Windows from 3.5 to 7 ms
and from 7 to 13 ms determine whether a 1 or a 0
is present. Periods between pulses of 13 to 25.5 ms
are recognized as word intervals.
Checks are made to ensure 5 bits are received for
a word to be valid ; two consecutive and identical
words allow corresponding function activation, 13
ms after receiving last pulse of the 2nd word (max
109 ms after first pulse of the first word).
NOTES 2 . 00001
1st last to be transmitted.
. Other codes are ignored
PPM INPUT PULSES
PPM INPUT PULSES
P H-------
- - - -
E88UAA4009-03
CHANNELS
088 gpanne: ; Channel activation is achieved either by remote
0 O C anne| control, or directly by momentary grounding corre-
OO“ Cpannel , sponding pin of the circuit. This allows local push-
8818 01132221 5 button control without external components.
00110 Channel 6 OUTPUTS : an open collector transistor grounds
00111 Channel 7 desired pin while others are high impedance (Vmax
01000 Channel 8 = 35 V). The typical current grounded is 10 mA.
01001 Channel 9
01010 Channel 10 STAND-BY
0101 1 Channel 11 S - B is activated (S - B ON) only by remote control ;
01100 Channel 12 it is disabled by activation of any channel either by
01101 Stand-by ON remote control or front-panel switches.
01110 Volume UP s - B ON activates muting.
011 11 Volume DOWN
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