Analog Devices Inc. LTC2672 12- & 16-Bit Digital-to-Analog Converter

Analog Devices Inc. LTC2672 12- & 16-Bit Digital-to-Analog Converter is a five-channel, current-source output DAC, with selectable output ranges, precision reference, and a multiplexer for surveying the channel output voltages and currents. The eight current ranges are programmable per channel with full-scale outputs of up to 300mA. The channels can be paralleled to allow either ultrafine adjustments of large currents or combined outputs of up to 1.5A. A dedicated supply pin is provided for each output channel. Each channel can be operated from 2.1V to V_CC, and internal switches allow any output to be pulled to the optional negative supply.

The LTC2672 includes a precision integrated 1.25V reference (10 ppm/°C maximum), with the option to use an external reference. The Serial Peripheral Interface (SPI) compatible, 3-wire serial interface operates on logic levels as low as 1.71V and at clock rates as high as 50MHz.

The Analog Devices Inc. LTC2672 ADC is offered in a 5mm x 5mm Lead Frame Chip Scale Package (LFCSP) with an exposed pad for enhanced thermal performance.

Features

Per-channel programmable output current ranges: 300mA, 200mA, 100mA, 0mA, 25mA, 12.5mA, 6.25mA, and 3.125mA
Flexible 2.1V to V_CC output supply voltages
Flexible single- or dual-supply operation
0.6V maximum dropout voltage guaranteed
Separate voltage supply per output channel
Internal switches to an optional negative supply
Precision internal reference (10ppm/°C maximum V_REF temperature coefficient) or external reference

Full 12- & 16-bit resolution at all ranges
Analog multiplexer monitors voltages and currents
A/B toggle via SPI or dedicated pin
1.71V to V_CC digital I/O supply
Operating temperature range
- LTC2672CUH: 0°C to +70°C
- LTC2672IUH: -40°C to +85°C
- LTC2672HUH: -40°C to +125°C
5mm x 5mm LFCSP32 package