ANALOG DEVICES LTC2662IUH-12#PBF Digital to Analogue Converter, 16 bit, 3 Wire, Microwire, Serial, SPI, 5.5 V, 2.85 V, 5 Channels

LTC2662IUH-12#PBF is a five-channel, 300mA current-source-output 12bit SoftSpan DAC. It provides five high-compliance current source outputs with guaranteed 1V dropout at 200mA. The part supports load voltages of up to 32V. There are eight current ranges, programmable per channel, with full-scale outputs of up to 300mA; and the channels can be paralleled to allow for ultrafine adjustments of large currents, or for combined outputs of up to 1.5A. A dedicated supply pin is provided for every output channel. The LTC2662 includes a precision integrated 1.25V reference, with the option to use an external reference. The SPI/Microwire-compatible 3-wire serial interface operates on logic levels as low as 1.71V at clock rates up to 50MHz. Typical applications include tunable lasers, semiconductor optical amplifiers, resistive heaters, current mode biasing and proportional solenoid drive.

• Per-channel programmable output ranges: 300mA, 200mA, 100mA, 50mA, 25mA, 12.5mA, 6.25mA and 3.125mA
• Flexible 2.85V to 33V supply voltage
• 1V dropout guaranteed
• Separate voltage supply per output channel
• Internal switches to optional negative supply
• Precision (10ppm/°C max) internal reference or external reference input
• Analog mux monitors voltages and currents
• A/B toggle via SPI or dedicated pin
• 1.8V to 5V SPI serial interface
• 32-lead (5mm × 5mm) QFN package, temperature range from –40°C to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party