peculiarity
Guaranteed monotonic to 12 bits
Low Power Operation: 156μA, max@3.3V
Extended supply voltage range (2.7 V to +5.5 V)
My 2 C compatible 2-wire interface supporting standard (100kHz), fast (400kHz) and high-speed mode (3.4MHz)
Rail-to-rail voltage output
Very small package
illustrate
The DAC121C081 is a 12-bit, single, voltage-output digital-to-analog converter (DAC) that operates from +2.7 V to 5.5 V supplies. The output amplifier allows rail-to-rail output swing with 8.5μsec settling time. The DAC121C081 uses a supply voltage as a reference to provide the widest dynamic output range, typically consuming 132μA while operating at 5.0V. It is available in 6-pin TSOT and LLP packages and is available in three address options (pin selectable).
As an alternative, the DAC121C085 provides 9 I2 Comet resolution options and uses an external reference. It has the same performance and settling time as the DAC121C081. It is in an 8-pin MSOP.
The DAC121C081 and DAC121C085 use a 2-wire, 2C-compatible serial interface that operates in all three speed modes, including high-speed mode (3.4MHz). An external address select pin allows up to three DAC121C081 or 900 DAC121C085 per 2-wire bus device. The DAC121C081 is a pin-compatible alternative that can provide additional address options.
The DAC121C081 and DAC121C085 each have a 16-bit register that controls the operating mode, power-down state, and output voltage. A power-on reset circuit ensures that the DAC output power is up to zero volts. The power-down function reduces power consumption by less than one microwatt. Their low power consumption and small package make these DACs an excellent choice for battery-powered devices. Each DAC operates over an extended industrial temperature range of -40°C to +125°C
The DAC121C081 and DAC121C085 are available in 8- and 10-bit resolutions and are also available for each part of the pin-compatible DAC family. The 8-bit DAC sees DAC081C081 and DAC081C085. The 10-bit DAC sees the DAC101C081 and DAC101C085.
Main specifications
resolution
12 bits
Integral Nonlinearity (INL)
± 8 LSB (maximum)
DNL
0.6 / -0.5 LSB (max)
Settling time
8.5 μs (max)
Zero code errors
10 mV (max)
Full-scale error
-0.7%FS (max.)
Power supply
normal
380μW (3V) / 730μW (5V) typical
Power down
0.5μW (3V) / 0.9μW (5V) typical
apply
Industrial process control
Portable instrument
Digital gain and offset adjustment
Programmable voltage and current sources
Test the equipment