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

• 40-channel DAC in 13 mm × 13 mm 108-lead CSPBGA
• Guaranteed monotonic to 14 bits
• Buffered voltage outputs
  Output 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

AD5379ABCZ，封装：108-Ball CSPBGA (13mm x 13mm x 1.7mm)，包装形式及数量：托盘，160，工作温度：-40 to 85C，AD官网报价：84.25（100-499个）；71.62（1000+个）

EVAL-AD5379：AD5379 评估板

该评估板可轻松评估AD5379的功能和性能。该评估板通过打印机端口连接PC。还提供软件，允许用户编程AD5379的寄存器。

请注意：该评估软件无法在Windows 8或Windows 10上运行（USB驱动程序不兼容Windows 7以上版本的操作系统）。