The AD5378 contains 32 14-bit DACs in one CSPBGA package.The AD5378 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 AD5378 guarantees 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 AD5378 contains a double-buffered parallel interface inwhich 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, which is compatible with SPI, QSPI?, MICROWIRE?, and DSP interface standards and can handle clock speeds of up to 50 MHz.

The DAC outputs are updated when the DAC registers receive new data. All the outputs can be updated simultaneously 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. Table 1 and Table 2 show the product portfolio for high channel count bipolar andunipolar voltage output DACs.

Applications

• AD5313R - 双通道、10位nanoDAC? ，内置2 ppm/°C基准电压源和SPI接口
• AD7710 - 内置电流源的CMOS、24位信号调理ADC
• ADP8861 - 电荷泵、7通道智能LED驱动器，采用I2C 接口
• AD5667R - 双通道、16位nanoDAC?，内置5 ppm/°C片内基准电压源和I2C?接口
• ADUM4470 - 集成四通道隔离器的隔离式开关稳压器（4/0通道方向性）
• AD704 - 四通道、皮安输入电流、双极性运算放大器
• AD5721R - 集成2 PPM/?C基准电压源的多范围、12位、单极性电压输出型DAC
• HMC1010 - DC - 3.9 GHz RMS功率检波器SMT
• ADM202E - EMI/EMC兼容、±15 kV ESD保护、RS-232线路驱动器/接收器
• ADSP-BF523 - 具有先进外设功能的低功耗Blackfin处理器