MAX5138

The MAX5138/MAX5139 are low-power, 16bit/12-bit, buffered voltage-output, high-linearity DACs. They use a precision internal reference or a precision external reference for rail-to-rail operation. The MAX5138/MAX5139 accept a wide +2.7V to +5.25V supply-voltage range to accommodate most low-power and low-voltage applications. The MAX5138/MAX5139 are available in an ultra-small (3mm x 3mm), 16-pin TQFN package and are specified over the -40°C to +105°C extended industrial temperature range. The MAX5138/MAX5139 are a family of single-channel pin-compatible and software-compatible 16-bit and 12bit DACs. The digital interface's double-buffered hardware and software LDAC provide simultaneous output update. The serial interface features a READY output for easy daisy-chaining of several MAX5138/MAX5139 devices and/or other compatible devices. The MAX5138/MAX5139 include a hardware input to reset the DAC outputs to zero or midscale upon power-up or reset, providing additional safety for applications that drive valves or other transducers that need to be off during power-up. The high linearity of the DACs makes these devices ideal for precision control and instrumentation applications. These devices accept a 3-wire SPITM-/QSPITM-/MICROWIRETM-/DSP-compatible serial interface to save board space and reduce the complexity of optically isolated and transformer-isolated applications.

The features of MAX5138 can be summarized as (1)-16-/12-bit resolution in a 3mm x 3mm, 16-pin TQFN Package; (2)hardware-selectable on power-up or reset-tozero/midscale DAC output; (3)-double-buffered input registers; (4)-LDAC asynchronously updates DAC output; (5)-READY facilitates daisy chaining; (6)-high-performance 10ppm/°C internal reference; (7)-guaranteed monotonic over all operating conditions; (8)-wide +2.7V to +5.25V supply range; (9)-rail-to-rail buffered output operation; (10)-low gain error (Less Than ±0.5% FS)and offset (less than ±10mV); (11)-30MHz 3-Wire SPI-/QSPI-/MICROWIRE-/ DSP-compatible serial interface; (12)-CMOS-compatible inputs with hysteresis; (13)-Low Power Consumption (ISHDN = 2A max).

The absolute maximum ratings of MAX5138 are (1)AVDD to AGND: -0.3V to +6V; (2)DVDD to AGND: -0.3V to +6V; (3)OUT to AGND: -0.3V to the lower of (AVDD + 0.3V)and +6V; (4)REFI, REFO, M/Z to AGND: -0.3V to the lower of (AVDD + 0.3V)and +6V; (5)SCLK, DIN, Cto AGND: -0.3V to the lower of (DVDD + 0.3V)and +6V; (6)LDAC, READY to AGND: -0.3V to the lower of (DVDD + 0.3V)and +6V; (7)continuous power dissipation (TA = +70°C)16-Pin TQFN (derate at 14.7mW/°C above +70°C): 1176.5mW; (8)maximum current into any input or output with the exception of M/Z Pin: ±50mA; (9)maximum current into M/Z Pin: ±5mA; (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.