The ADT7516/ADT7517/ADT75191 combine a 10-bit temperature-to-digital converter， a 10-bit 4-channel ADC， and a quad 12-/10-/8-bit DAC， respectively， in a 16-lead QSOP package. The parts also include a band gap temperature sensor and a 10-bit ADC to monitor and digitize the temperature reading to a resolution of 0.25°C. The ADT7516/ADT7517/ADT7519 operate from a single 2.7 V to 5.5 V supply. The input voltage range on the ADC channels is 0 V to 2.28 V， and the input bandwidth is dc. The reference for the ADC channels is derived internally. The output voltage of the DAC ranges from 0 V to VDD， with an output voltage settling time of 7 μs typical. The ADT7516/ADT7517/ADT7519 provide two serial interface options： a 4-wire serial interface that is compatible with SPI， QSPI， MICROWIRE， and DSP interface standards， and a 2-wire SMBus/I2 C interface. They feature a standby mode that is controlled through the serial interface. The reference for the four DACs is derived either internally or from a reference pin. The outputs of all DACs can be updated simultaneously using the software LDAC function or the external LDAC pin. The ADT7516/ADT7517/ADT7519 incorporate a power-on reset circuit， ensuring that the DAC output powers up to 0 V and remains there until a valid write takes place. The wide supply voltage range， low supply current， and SPI-/ I 2 C-compatible interface of the ADT7516/ADT7517/ADT7519 make them ideal for a variety of applications， including personal computers， office equipment， and domestic appliances.