The LTC2666CUH-12#PBF is an octal 12bit SoftSpan digital to analogue (DAC) converter with integrated precision references in 32 pin QFN package. This monotonic DAC has built-in rail to rail output buffers. The SoftSpan DAC offers five output ranges up to ±10V. The range of each channel is independently programmable or the device can be hardware configured for operation in a fixed range. The integrated 2.5V reference is buffered separately to each channel and an external reference can be used for additional range options. The SPI/microwire compatible 3-wire serial interface operates on logic levels as low as 1.71V at clock rates up to 50MHz. The LTC2666 operate on positive 5V and bipolar ±15V supplies. The bipolar supplies can operate as low as ±4.5V and need not be symmetrical. In addition, the negative V- supply can be operated at ground making the device compatible with single supply systems. The outputs are driven by the bipolar supply rails.
Maximum precision reference of 10ppm/°C
Independently programmable output ranges from 0V to 5V, 0V to 10V, ±2.5V, ±5V, ±10V
8:1 analogue multiplexer
Internal or external reference
Output drive of ±10mA
A/B toggle via software or dedicated pin
1.8V to 5V SPI serial interface
Analogue supply voltage range from 4.5V to 5.5V (±4.75V to ±15.75V)
(EN)
