AD5379 - 40-Channel, 14-Bit, Parallel and Serial Input, Bipolar Voltage-Output DAC

AD5379是AD公司的一款数模转换器 (DAC)产品，AD5379是40-Channel, 14-Bit, Parallel and Serial Input, Bipolar Voltage-Output DAC，本站介绍了AD5379的封装应用图解、特点和优点、功能等，并给出了与AD5379相关的AD元器件型号供参考。

AD5379 - 40-Channel, 14-Bit, Parallel and Serial Input, Bipolar Voltage-Output DAC - 数模转换器 (DAC) - 数模转换器 (DAC) - Analog Devices

产品描述

The AD5379 contains 40 14-bit DACs in one CSPBGA package. The AD5379 provides a bipolar output range determined by the voltages applied to the VREF(+) and VREF(?) inputs. The maximum output voltage span is 17.5 V, corresponding to a bipolar output range of ?8.75 V to +8.75 V, and is achieved with reference voltages of VREF(?) = ?3.5 V and VREF(+) = +5 V.

The AD5379 offers guaranteed operation over a wide VSS/VDD supply range from ±11.4 V to ±16.5 V. The output amplifier headroom requirement is 2.5 V operating with a load current of 1.5 mA, and 2 V operating with a load current of 0.5 mA.

The AD5379 contains a double-buffered parallel interface in which 14 data bits are loaded into one of the input registers under the control of the WR, CS, and DAC Channel Address Pins A0 to A7. It also has a 3-wire serial interface that is com-patible with SPI, QSPI?, MICROWIRE?, and DSP interface standards and can handle clock speeds of up to 50 MHz.

The DAC outputs are updated upon reception of new data into the DAC registers. All the outputs can be simultaneously updated by taking the LDAC input low. Each channel has a programmable gain and an offset adjust register.

Each DAC output is gained and buffered on-chip with respect to an external REFGND input. The DAC outputs can also be switched to REFGND via the CLR pin.

Applications

Level setting in automatic test equipment (ATE)

Variable optical attenuators (VOA)

Optical switches

Industrial control systems

优势和特点

40-channel DAC in 13 mm × 13 mm 108-lead CSPBGA

Guaranteed monotonic to 14 bits

Buffered voltage outputsOutput voltage span of 3.5 V × VREF(+)Maximum output voltage span of 17.5 V

System calibration function allowing user-programmable offset and gain

Pseudo differential outputs relative to REFGND

Clear function to user-defined REFGND (CLR pin)

Simultaneous update of DAC outputs ((LDAC pin)

DAC increment/decrement mode

Please see data sheet for additional features