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

• ADN2807 - 155/622 Mbps时钟和数据恢复IC，集成限幅放大器
• ADV611-ADV612 - 闭路电视数字视频编解码器
• ADTL082 - 低成本、JFET输入双通道运算放大器
• AD669 - 单芯片16位DACPORT
• ADR360 - 低功耗、低噪声基准电压源，具有吸电流和源电流能力，2.048 VOUT
• AD7888 - 2.7 V至5.25 V、微功耗、8通道、125 kSPS、12位ADC，采用16引脚TSSOP封装
• AD8212 - 高压分流监控器
• AD7305 - +3V/+5V、轨到轨、四通道、并行输入、8位DAC
• AD5311R - 10位 nanoDAC、I2C 接口以及2 ppm/°C 片内基准电压源
• ADR3533 - 微功耗、精密、通过汽车应用认证的3.3 V基准电压源