MAX5500

The MAX5500/MAX5501 integrate four low-power, 12-bit digital-to analog converters (DACs)and four precision output amplifiers in a small, 20-pin package. Each DAC provides a double-buffered input organized as an input register followed by a DAC register. A 16-bit serial word loads data into each input register. The serial interface is compatible with SPI/QSPI/ MICROWIRE. Other features include software shutdown, hardware shutdown lockout, an active-low reset which clears all registers and DACs to zero, a user-programmable logic output, and a serial-data output. The serial interface allows the input and DAC registers to be updated independently or simultaneously with a single software command. The 3-wire interface simultaneously updates the DAC registers. All logic inputs are TTL/CMOS-logic compatible. The MAX5500 operates from a single +5V power supply, and the MAX5501 operates from a single +3V power supply. The MAX5500/MAX5501 are specified over the extended -40°C to +105°C temperature range. Each negative input of the four precision amplifiers is externally accessible providing flexibility in gain configurations, remote sensing, and high output drive capacity, making the MAX5500/MAX5501 ideal for industrial-process-control applications.

The features of MAX5500 can be summarized as (1)four 12-Bit DACs with configurable output amplifiers; (2)+5V or +3V single-supply operation; (3)low supply current: 0.85mA normal operation 10A Shutdown Mode (MAX5500); (4)force-sense outputs; (5)power-on reset clears all registers and DACs to Zero; (6)capable of recalling last state prior to shutdown; (7)SPI/QSPI/MICROWIRE compatible; (8)simultaneous or independent control of DACs through 3-wire serial interface; (9)user-programmable digital output; (10)guaranteed over extended temperature range (-40°C to +105°C).

The absolute maximum ratings of MAX5500 are (1)VDD to AGND:-0.3V to +6V; (2)VDD to DGND: -0.3V to +6V; (3)AGND to DGND: -0.3V to +0.3V; (4)REFAB, REFCD to AGND: -0.3V to (VDD + 0.3V); (5)OUT_, FB_ to AGND: -0.3V to (VDD + 0.3V); (6)digital inputs to DGND: -0.3V to +6V; (7)DOUT, UPO to DGND: -0.3V to (VDD + 0.3V); (8)continuous current into any pin: ±20mA; (9)continuous power dissipation (TA = +70°C)20-Pin SSOP (derate 8.00mW/°C above +70°C): 640mW; (10)operating temperature range: -40°C to +105°C; (11)storage temperature range: -65°C to +150°C; (12)lead temperature (soldering, 10s): +300°C.