AD5647R Datasheet | Analog Devices

FEATURES Low power, smallest pin-patible, dual nano DACs AD5627R/AD5647R/AD5667R 12-/14-/16-bit On-chip 1.25 V/2.5 V, 5 ppm/°C reference AD5627/AD5667 12-/16-bit External reference only 3 mm x 3 mm LFCSP and 10-lead MSOP 2.7 V to 5.5 V power supply Guaranteed monotonic by design Power-on reset to zero scale Per channel power-down Hardware LDAC and CLR functions I2C-patible serial interface supports standard (100 k Hz), fast (400 k Hz), and high speed (3.4 MHz) modes APPLICATIONS Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators GENERAL DESCRIPTION The AD5627R/AD5647R/AD5667R, AD5627/AD5667 members of the nano DAC family are low power, dual, 12-, 14-, 16-bit buffered voltage-out DACs with/without on-chip reference. All devices operate from a single 2.7 V to 5.5 V supply, are guaranteed monotonic by design, and have an I2Cpatible serial interface. The AD5627R/AD5647R/AD5667R have an on-chip reference. The AD56x7RBCPZ have a 1.25 V, 5 ppm/°C reference, giving a full-scale output range of 2.5 V; the AD56x7RBRMZ have a 2.5 V, 5 ppm/°C reference, giving a full-scale output range of 5 V. The on-chip reference is off at power-up, allowing the use of an external reference. The internal reference is enabled via a software write. The AD5667 and AD5627 require an external reference voltage to set the output range of the DAC. The AD56x7R/AD56x7 incorporate a power-on reset circuit that ensures the DAC output powers up to 0 V, and remains there until a valid write takes place. The part contains a perchannel power-down feature that reduces the current consumption of the device to 480 n A at 5 V and provides ADDR SCL SDA FUNCTIONAL BLOCK DIAGRAMS VREFIN/VREFOUT AD5627R/AD5647R/AD5667R INPUT REGISTER DAC REGISTER 1.25V/2.5V REF STRING DAC A BUFFER INTERFACE LOGIC INPUT REGISTER DAC REGISTER STRING DAC B BUFFER VOUTA VOUTB POWER-ON...