M3004LD Datasheet, PDF (1/14 Pages) STMicroelectronics – REMOTE CONTROL TRANSMITTER

M3004LD
REMOTE CONTROL TRANSMITTER
FEATURES SUMMARY
■ FLASHED OR MODULATED TRANSMISSION
■ 7 SUB-SYSTEM ADDRESSES
■ UP TO 64 COMMANDS PER SUB-SYSTEM
ADDRESS
■ HIGH-CURRENT REMOTE OUTPUT AT
V_DD = 6V (–I_OH = 80mA)
■ LOW NUMBER OF ADDITIONAL
COMPONENTS
■ KEY RELEASE DETECTION BY TOGGLE
BITS
■ VERY LOW STAND-BY CURRENT (< 2µA)
■ OPERATIONAL CURRENT < 1mA AT 6V
SUPPLY
■ SUPPLY VOLTAGE RANGE 2 TO 6.5V
■ CERAMIC RESONATOR CONTROLLED
FREQUENCY (typ. 450kHz)
Figure 1. Package
SO20
(Plastic Package)
Figure 2. Pin Connection
DESCRIPTION
The M3004LD transmitter IC is designed for infra-
red remote control systems. It has a total of 448
commands which are divided into 7 sub-system
groups with 64 commands each. The sub-system
code may be selected by a press button, a slider
switch or hard wired.
The M3004LD generates the pattern for driving the
output stage. These patterns are pulse distance
coded. The pulses are infrared flashes or modulat-
ed. The transmission mode is defined in conjunc-
tion with the sub-system address. Modulated
pulses allow receivers with narrow-band preampli-
fiers for improved noise rejection to be used.
Flashed pulses require a wide-band preamplifier
within the receiver.
REMO
1
SEN 6N
2
SEN 5N
3
SEN 4N
4
SEN 3N
5
SEN 2N
6
SEN 1N
7
SEN 0N
8
ADRM
9
V_SS
10
20
V_DD
19
DRV 6N
18
DRV 6N
17
DRV 6N
16
DRV 6N
15
DRV 6N
14
DRV 6N
13
DRV 6N
12
OSC OUT
11
OSC IN
June 2004
REV. 2
1/14