PCA9691T/1,512

PCA9691T/1,512 2. Features

(cid:132) 8-bit successive approximation A/D conversion(cid:132) Four analog inputs programmable as single-ended or differential inputs(cid:132) 64 different addresses by three hardware address pins(cid:132) 1 MHz Fast-mode Plus (Fm+) I2C-bus via serial input/output(cid:132) Sampling rate given by I2C-bus frequency(cid:132) Single supply voltage; operating from 2.5 V to 5.5 V(cid:132) Low standby current(cid:132) Analog voltage from VSS to VDD(cid:132) Multiplying Digital-to-Analog Converter (DAC) with one analog output(cid:132) On-chip sample and hold circuit(cid:132) Auto-incremented channel selection

PCA9691T/1,512 1. General description

The PCA9691 is a single chip, single supply, low power, 8-bit CMOS1 data acquisitiondevice with four analog inputs, one analog output and a serial I2C-bus interface. Threeaddress pins (A0, A1, and A2) are used for programming the hardware address, allowingthe use of up to 64 PCA9691 devices connected to the I2C-bus without additionalhardware. Address, control and data to and from the PCA9691 are transferred via theserial two-line bidirectional I2C-bus.The functions of the PCA9691 include: • Analog input multiplexing • On-chip sample and hold • 8-bit Analog-to-Digital (A/D) conversion • 8-bit Digital-to-Analog (D/A) conversionThe maximum conversion rate is given by the maximum frequency of the I2C-bus.