12.22. TSOP1136
12.23. PCF8591
12.23.1. General Description
The PCF8591 is a single-chip, single-supply low power 8-bit CMOS data acquisition device with four
2
analog inputs, one analog output and a serial IC-bus interface.
Three address pins A0, A1 and A2 are used for programming the hardware address, allowing the use of
2
up to eight devices connected to the IC-bus without additional hardware. Address, control and data to
2
and from the device are transferred serially via the two-line bidirectional IC-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
2
given by the maximum speed of the IC-bus.
12.23.2. 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
? Analog voltage range from VSS to VDD
32
27? TFT TV Service Manual 05/09/2005 |
ACEC
