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The LTC2672HUH-12 is a five-channel SPI interface digital-to-analog converter (DAC) that supports 12-bit resolution and is suitable for a variety of application scenarios.

Performance parameters

Product: LTC2672HUH-12

Resolution: 12 bits

Number of channels: 5 channels

Stabilization time: 200 μ s

Output type: Current

Interface type: SPI

Analog power supply voltage: 2.85V to 5.5V

Digital power supply voltage: 1.71 V to 5.5 V

Minimum operating temperature: -40 °C

Maximum operating temperature: + 125°C

Installation style: SMD/SMT

Package/Box: QFN-32

Development kit: DC2903A

DNL - Differential nonlinearity: 0.03 LSB

Gain error: 0.7% FSR

Inl-integral nonlinearity: 0.8 LSB

Number of converters: 5 Converters

Working power supply current: 4 mA

Product type: DACs - Digital to Analog Converters

Reference type: Internal

Reference voltage: 1.25V

Description

The LTC2672HUH-12 is a five-channel, 12-bit current source, digital-to-analog converter (DAC), providing five highly compatible current source outputs and guaranteeing a 600mV voltage drop at 200mA. Each channel has eight programmable current ranges, with a full-scale output up to 300 mA. These channels can be connected in parallel, enabling ultra-fine regulation of large currents or achieving combined outputs up to 1.5A. Each output channel has a dedicated power pin. Each channel can operate within the range of 2.1V to VCC, and the internal switch can connect any output to an optional negative power supply.

The LTC2672HUH-12 includes a precisely integrated 1.25V reference voltage source (with a maximum value of 10ppm/°C), and an external reference voltage source can be optionally used. The three-wire serial interface is compatible with the Serial peripheral interface (SPI) and can operate at a logic level as low as 1.71V and a clock frequency up to 50 MHz.

Main characteristics

The programmable output current range for each channel is: 300 mA, 200 mA, 100 mA, 0 mA, 25 mA, 12.5 mA, 6.25 mA and 3.125 mA

Flexible output power supply voltage from 2.1V to VCC

Flexible single or dual power supply operation

Ensure a maximum voltage difference of 0.6V

Each output channel is independently powered

The internal switch can be switched to an optional negative power supply

Full 16-bit resolution for all ranges

The guaranteed operating temperature range is -40°C to 125°C (Class H)

Precision internal reference voltage source (with a maximum VREF temperature coefficient of 10 ppm/°C) or external reference voltage source

Analog multiplexers monitor voltage and current

Switch A/B via SPI or a dedicated pin

1.71V to VCC digital I/O power supply

The LTC2672HUH-12 device adopts a 32-pin QFN package

Application scenarios

The LTC2672HUH-12 is suitable for a variety of applications that require high-precision current source output, including:

Tunable laser

Bias of semiconductor optical amplifiers

Resistance heater

Current mode bias

These applications require high-precision current output and stable performance, and the LTC2672HUH-12 can meet these demands.

If you need to obtain [LTC2672HUH-12] product quotation information, please visit the official website www.hkmjd.com to contact Mingjiada Electronics online.