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

• AD8044 - 四核150 MHz轨到轨放大器
• AD5328 - 2.5 V至5.5 V、八通道、电压输出12位DAC，采用16引脚TSSOP封装
• ADAV4622 - 高级电视音频处理器，内置声音IF解调器和立体声解码器
• AD8207 - 零漂移、高压、双向差动放大器
• AD596 - 配合J型热电偶使用的热电偶调节器和设定点控制器
• AD8023 - 高电流输出、三路视频放大器
• ADCLK944 - 2.5 V/3.3 V、4路LVPECL输出、SiGe时钟扇出缓冲器
• HMC443 - x4有源倍频器，采用SMT封装，9.8 - 11.2 GHz Fout
• ADM4168E - 带±15 KV ESD保护功能的双通道RS-422收发器
• HMC618A - GaAs SMT pHEMT低噪声放大器SMT，1.2 - 2.2 GHz