PCA9691

PCA9691 8-bit A/D and D/A converter Rev. 02 — 27 January 2010 Product data sheet 1. General description The PCA9691 is a single chip, single supply, low power, 8-bit CMOS1 data acquisition device with four analog inputs, one analog output and a serial I2C-bus interface. Three address pins (A0, A1, and A2) are used for programming the hardware address, allowing the use of up to 64 PCA9691 devices connected to the I2C-bus without additional hardware. Address, control and data to and from the PCA9691 are transferred via the serial 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) conversion The maximum conversion rate is given by the maximum frequency of the I2C-bus. 2. Features „ 8-bit successive approximation A/D conversion „ Four analog inputs programmable as single-ended or differential inputs „ 64 different addresses by three hardware address pins „ 1 MHz Fast-mode Plus (Fm+) I2C-bus via serial input/output „ Sampling rate given by I2C-bus frequency „ Single supply voltage; operating from 2.5 V to 5.5 V „ Low standby current „ Analog voltage from VSS to VDD „ Multiplying Digital-to-Analog Converter (DAC) with one analog output „ On-chip sample and hold circuit „ Auto-incremented channel selection 1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 14. NXP Semiconductors PCA96...