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

• ADUM2250 - 热插拔双通道I2C? 隔离器，5kV
• AD8375 - 超低失真IF VGA
• HMC728 - 13 Gbps、2:1选择器
• AD9125 - 双通道、16位、1000 MSPS、TxDAC+?数模转换器
• AD5724 - 完整的四通道、12位、串行输入、单极性/双极性、电压输出DAC
• HMC588 - 采用SMT封装的宽带VCO，带有缓冲放大器，8 - 12.5 GHz
• AD8307 - 直流至500 MHz、92 dB对数放大器
• AD539 - Wideband Dual-Channel Linear Multiplier/Divider
• AD9114 - 双路、低功耗、8位TxDAC数模转换器
• AD9518-3 - 6路输出时钟发生器，集成2.0 GHz VCO