I²C-bus ADC/DAC meets Fast-mode Plus performance

NXP Semiconductors has introduced the PCA9691, a combined ADC and DAC with I2C interface capable of operation at 1MHz for Fast-mode Plus (FM+) solutions.

By operating from a single power supply of 2.5V to 5.5V, the PCA9691 also eases system design.

The PCA9691 has four analogue inputs. These can be configured as single-ended or differential inputs to perform simple monitoring of measuring bridges as well as grounded or floating signals. An on-chip track-and-hold function also allows use as an 8-bit ADC with four multiplexed inputs. In addition, the peak sampling capability above 100ksample/s allows the device to be used for distribution of audio signals.

A single analogue output is also provided, allowing operation as a one-channel 8-bit DAC to convert digital values transmitted by a host microcontroller. Address, control and data are transferred serially via the two-line bi-directional I²C-interface. Three address pins are provided, allowing eight devices to be connected to the I²C-bus without additional hardware.

 

FEATURES Low stand-by current Auto-incremented channel selection SO-16, HVQFN-20 and TSSOP-16 packages Meets JESD78 latch-up testing >100mA

APPLICATIONS Audio distribution Highway equipment Industrial control Video surveillance Temperature control Power-management units

 

 

 

• Fairchild Semiconductor’s FAN4174/FAN4274, page 070927

 

www.standardics.nxp.com/search/?search=PCA9691&links=999,013,102,189,001