ULTRA-SMALL 14-BIT DACs IN µMAX PACKAGES OFFER LOW-POWER SOLUTION
SUNNYVALE, CA-September 4, 2001-Maxim Integrated Products introduces the MAX5141–MAX5144 ultra-small unbuffered 14-bit serial DACs in 8-pin and 10-pin µMAX packages (3mm x 5mm) that are 50% smaller than comparable devices in SOIC. The MAX5141/MAX5143 incorporate unipolar outputs while the MAX5142/MAX5144 incorporate matched scaling resistors for use with an external op amp to provide bipolar operation. These products operate from single +3V or +5V supplies, requiring 230µA of supply current. This power savings significantly reduces power consumption over other 14-bit DACs. These small DACs have applications in battery-powered devices as well as in industrial process control and test and measurement equipment.
MAX5141–MAX5144 support SPI™, QSPI™, and MICROWIRE™ compatible 3-wire serial protocols on a fast 25MHz interface. The DAC output swing is capable of rail-to-rail operation. Its reference input accepts ranges of +2V to VDD allowing a wide selection of voltage references. The DAC output swings from 0 to VREF without any degradation in performance. DNL is guaranteed monotonic and INL is ±1LSB, making them ideal for applications requiring precision. The MAX5141–MAX5144 respond to a full-scale output change in 1µs. On power-up, the DAC output is reset to ground for unipolar and midscale for bipolar operation. Schmitt trigger inputs allow for direct optocoupler interface, making these DACs useful in industrial process control applications that require hysteresis on the digital inputs.
For applications requiring higher resolution, try the 16-bit MAX5441–MAX5444. Pricing for the 14-bit MAX5141–MAX5144 starts at $4.50 (1000-up, FOB USA).
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