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Plasma TV Service Manual 05/01/2006
12.24. TSOP1836
12.24.1. Description
The TSOP18.. – series are miniaturized receivers for infrared remote control systems. PIN diode and
preamplifier are assembled on lead frame, the epoxy package is designed as IR filter. Carrier frequency
for TSOP1836 is 36kHz.
The demodulated output signal can directly be decoded by a microprocessor. The main benefit is the
reliable function even in disturbed ambient and the protection against uncontrolled output pulses.
12.24.2. Features
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• TTL and CMOS compatibility
• Output active low
• Improved shielding against electrical field disturbance
• Suitable burst length .6 cycles/burst
Special Features
• Small size package
• Enhanced immunity against all kinds of disturbance light
• No occurrence of disturbance pulses at the output
• Short settling time after power on (<200_s)
12.25. PCF8591
12.25.1. General Description
The PCF8591 is a single-chip, single-supply low power 8-bit CMOS data acquisition device with four
analog inputs, one analog output and a serial I
2
C-bus interface.
Three address pins A0, A1 and A2 are used for programming the hardware address, allowing the use of
up to eight devices connected to the I
2
C-bus without additional hardware. Address, control and data to
and from the device are transferred serially via the two-line bidirectional I
2
C-bus.
The functions of the device include analog input multiplexing, on-chip track and hold function, 8-bit
analog-to-digital conversion and an 8-bit digital-to-analog conversion. The maximum conversion rate is
given by the maximum speed of the I
2
C-bus.
12.25.2. Features
• Single power supply
• Operating supply voltage 2.5 V to 6 V
• Low standby current
• Serial input/output via I 2 C-bus
• Address by 3 hardware address pins
• Sampling rate given by I 2 C-bus speed
• 4 analog inputs programmable as single-ended or differential inputs
• Auto-incremented channel selection