MAX5122AEEE

The MAX5122AEEE belongs to MAX5122 family which operates on a single +5V supply with an internal +2.5V reference, and offers a configurable output amplifier. The DAC register may be updated independently or simultaneously with the input register. Both devices are available in a 16-pin QSOP package and are specified for the extended-industrial (-40°C to +85°C)operating temperature range. For pin-compatible 14-bit upgrades, see the MAX5171/MAX5173 data sheet; for the pin-compatible 13-bit version, see the MAX5132/ MAX5133 data sheet. If necessary, the user can override the on-chip, <10ppm/°C voltage reference with an external reference. The MAX5123 has the same features as the MAX5122 but operates from a single +3V supply and has an internal +1.25V precision reference. The user-accessible inverting input and output of the amplifier allows specific gain configurations, remote sensing, and high output drive capability for a wide range of force/sense applications. Both devices draw only 500A of supply current, which reduces to 3A in power-down mode. In addition, their power-up reset feature allows for a user-selectable initial output state of either 0V or midscale and reduces output glitches during power-up. The serial interface is compatible with SPI, QSPI, and MICROWIRE, which makes the MAX5122/MAX5123 suitable for cascading multiple devices. Each DAC has a double-buffered input organized as an input register followed by a DAC register. A 16-bit shift register loads data into the input register. The MAX5122/MAX5123 low-power, 12-bit, voltage-output, digital-to-analog converters (DACs)feature an internal precision bandgap reference and output amplifier.

The features of MAX5122AEEE can be summarized as (1)single-supply operation +5V (MAX5122)/ +3V (MAX5123); (2)built-in 10ppm/°C max precision bandgap reference +2.5V (MAX5122)/ +1.25V (MAX5123); (3)SPI/QSPI/MICROWIRE-compatible, 3-wire serial interface; (4)pin-programmable shutdown mode and powerup reset (0 or midscale output voltage); (5)buffered output capable of driving 5k 100pF or 420mA loads; (6)space-saving 16-Pin QSOP package; (7)pin-compatible 13-bit upgrades available (MAX5132/MAX5133); (8)pin-compatible 14-bit upgrades available (MAX5171/MAX5173).

The absolute maximum ratings of MAX5122AEEE are (1)VDD to AGND, DGND: -0.3V to +6V; (2)AGND to DGND: -0.3V to +0.3V; (3)digital inputs to DGND: -0.3V to +6V; (4)digital outputs (DOUT, UPO)to DGND: -0.3V to (VDD + 0.3V); (5)FB, OUT to AGND: -0.3V to (VDD + 0.3V); (6)REF, REFADJ to AGND: -0.3V to (VDD + 0.3V); (7)maximum current into any pin: 50mA; (8)continuous power dissipation (TA = +70°C)QSOP (derate 8.00mW/°C above +70°C): 667mW; (9)operating temperature range: -40°C to +85°C; (10)storage temperature range: -65°C to +150°C; (11)lead temperature (soldering, 10s): +300°C.