DAC7311 Datasheet | Texas Instruments

Features - Relative accuracy: - 0.25 LSB INL (DAC5311: 8-bit) - 0.5 LSB INL (DAC6311: 10-bit) - 1 LSB INL (DAC7311: 12-bit) - micro Power operation: 80 μA at 2.0 V - Power-down: 0.5 μA at 5 V, 0.1 μA at 2.0 V - Wide power supply: 2.0 V to 5.5 V - Power-on reset to zero scale - Straight binary data format - Low power serial interface with Schmitt-triggered inputs: up to 50 MHz - On-chip output buffer amplifier, rail-to-rail operation - SYNC interrupt facility - Extended temperature range - 40°C to +125°C - Pin-patible family in a tiny, 6-pin SC70 package 2 Applications - Portable, battery-powered instruments - 4-m A to 20-m A loop-powered applications - Process control and industrial automation - Programmable voltage and current sources AVDD GND Power-On Reset DAC Register REF(+) 8-/10-/12-Bit DAC Output Buffer VOUT Input Control Logic Power-Down Control Logic Resistor Network SYNC SCLK DIN Simplified Schematic 3 Description The 8-bit DAC5311, 10-bit DAC6311, and 12-bit DAC7311 (DACx311) are low-power, single-channel, voltage output digital-to-analog converters (DACs). The low power consumption in normal operation (0.55 m W at 5 V, reducing to 2.5 μW in power-down mode) makes the DACx311 an excellent choice for portable, battery-operated applications. These devices are monotonic by design, provide excellent linearity, and minimize undesired codeto-code transient voltages while offering an easy upgrade path within a pin-patible family. All devices use a versatile, three-wire serial interface that operates at clock rates of up to 50 MHz, and is patible with standard SPI, QSPI, Microwire, and digital signal processor (DSP) interfaces. All devices use an external power supply as a reference voltage to set the output range. The devices incorporate a power-on reset (POR) circuit that powers up the DAC output at 0 V and remains at 0 V until a valid write to the device occurs. The DACx311 contain a power-down feature , accessed over the serial interface, that reduces...