LTC2662CUH-16#PBF

LTC2662CUH-16#PBF is a 16bit, current-source digital-to-analogue converter, providing 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. Each can be operated from 2.85V to 33V, and internal switches allow any output to be pulled to the optional negative supply. The SPI/microwave-compatible 3-wire serial interface operates on logic levels as low as 1.71V at clock rates up to 50MHz. Applications include tunable lasers, semiconductor optical amplifiers, resistive heaters, current mode biasing, and proportional solenoid drives.

• 1.8V to 5V SPI serial interface, 1V dropout guaranteed
• Separate voltage supply per output channel, internal switches to optional negative supply
• Analog mux monitors voltages and currents, A/B toggle via SPI or dedicated pin
• Integral non-linearity is ±12LSB typical at (TJ = 25°C, VCC = IOVCC = 5V)
• Current offset error is +0.4%FSR maximum at (TJ = 25°C, VCC = IOVCC = 5V; V- = -5V)
• Total unadjusted error is +1.4%FSR maximum at (TJ = 25°C, VCC = IOVCC = 5V; V- = -5V)
• Output current noise density is 12nA/√Hz typical at (frequency (f) = 1KHz, TJ = 25°C)
• VREF temperature coefficient is ±3ppm/°C typical at (TJ = 25°C, VCC = IOVCC = 5V)
• VREF load regulation is 140mV/mA typ at (reference current (IREF) = 100µA sourcing, TJ= 25°C)
• Operating temperature range from 0°C to 70°C, 32-lead QFN package

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