AD5361:  16-Channel, 14-Bit, Serial Input, Voltage-Output DAC

The AD5360/AD5361 contain 16, 16-/14-bit DACs in a single 52-lead LQFP package. It provides buffered voltage outputs with a span four times the reference voltage. The gain and offset of each DAC can be independently trimmed to remove errors. For even greater flexibility, the device is divided into two groups of eight DACs, and the output range of each group can be independently adjusted by an offset DAC.

The AD5360/AD5361 offer guaranteed operation over a wide supply range with V_SS from −4.5 V to −16.5 V and V_DD from +8 V to +16.5 V. The output amplifier headroom requirement is 1.4 V operating with a load current of 1 mA.

The AD5360/AD5361 have a high speed 4-wire serial interface, which is compatible with SPI, QSPI™, MICROWIRE™, and DSP interface standards and can handle clock speeds of up to 50 MHz. 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 amplified and buffered on-chip with respect to an external SIGGND input. The DAC outputs can also be switched to SIGGND via the CLR pin.

Applications

• Instrumentation
• Industrial control systems
• Level setting in automatic test equipment (ATE)
• Variable optical attenuators (VOA)
• Optical line cards