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Analog Devices MAX22007 Four-Channel Analog Output ICs drive a voltage or current output on each channel. All outputs are protected to ±42VP-P for a high-voltage supply of HVDD = 8V to 20V and HVSS = -2V to 0V. Each output channel of the MAX22007 features a 12-bit DAC with fast settling time using a shared internal voltage reference. The device offers low-offset, high-voltage amplifiers to condition the signal from low-voltage DAC outputs to high-voltage or current outputs. If one output is miswired, all other outputs remain unaffected and function normally. For each channel, an internal comparator can be used to determine the load impedance and allows the microcontroller to intelligently select for voltage or current output mode. All outputs are kept safe by integrated current protection for functional and thermal robustness. The Analog Devices MAX22007 also includes a thermal shutdown circuit that protects the device when the junction temperature exceeds 165°C (typ).
The MAX22007 communicates with a microcontroller using an SPI interface at clock rates up to 30MHz with an optional eight-bit CRC for improved data integrity. Eight GPIOs can be used to interface and control other resources in the application circuit. The MAX22007 operates from a 2.7V to 5.5V VDD low-voltage supply and an 8V to 24V HVDD positive high-voltage supply. The negative voltage supply HVSS can be set between -2V and 0V. The MAX22007 is available in an 8mm x 8mm 56-pin TQFN package and operates over the -40°C to +85°C temperature range with 2.5kV HBM ESD protection on all pins.
