MAX5173

VDD to AGND, DGND..............................................-0.3V to +6.0V
AGND to DGND.......................................................-0.3V to +0.3V
Digital Inputs to DGND..........................................-0.3V to +6.0V
DOUT, UPO to DGND ..................................-0.3V to (VDD + 0.3V)
FB, OUT, REF to AGND ................................-0.3V to (VDD + 0.3V)
Maximum Current into Any Pin.............................................50mA
Continuous Power Dissipation (TA = +70°C)
16-pin QSOP (derate 8mW/°C above +70°C).................667mW
Operating Temperature Range ..........................-40°C to +85°C
Storage Temperature Range ...........................-65°C to +150°C
Lead Temperature (soldering, 10sec) ..............................+300°C

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The MAX5171/MAX5173 low-power, serial, voltage-output, 14-bit digital-to-analog converters (DACs) feature a precision output amplifier in a space-saving 16-pin QSOP package. The MAX5171 operates from a +5V single supply, and the MAX5173 operates from a +3V single supply. The output amplifier's inverting input is available to allow specific gain configurations, remote sensing, and highoutput current capability. This makes the MAX5171/MAX5173 ideal for a wide range of applications, including industrial process control. Both devices draw only 260µ of supply current, which reduces to 1µA in shutdown mode. In addition, the programmable power-up reset feature allows for a user-selectable output voltage of either or midscale.

The 3-wire serial interface of MAX5173 is compatible with SPI™ QSPI™, and MICROWIRE™ standards. An input register followed by a DAC register provides a double-buffered input, allowing the input and DAC registers to be updated independently or simultaneously with a 16-bit serial word. Additional features include software and hardware shutdown, shutdown lockout, a hardware clear pin, and a reference input capable of accepting DC and offset AC signals. The MAX5173 provides a programmable digital output pin for added functionality and a serial-data output  pin for daisy-chaining. All logic inputs are TTL/CMOScompatible and are internally buffered with Schmitt triggers to allow direct interfacing to optocouplers.

The MAX5171/MAX5173 incorporate a proprietary on-chip circuit that keeps the output voltage virtually "glitch free," limiting the glitches to a few millivolts during power-up.

Both devices are available in 16-pin QSOP packages and are specified for the extended (-40°C to +85°C) temperature range. The MAX5171/MAX5173 are pin-compatible upgrades to the 12-bit MAX5175/MAX5177. For 100% pincompatible DACs with an internal reference, see the 13-bit MAX5132/MAX5133 and the 12-bit MAX5122/MAX5123 data sheets.