Wolfson Microelectronics plc WM2638
The WM2638 is a dual 12-bit voltage output, resistor string, digitalto-analogue converter. The WM2638 features an internal programmable voltage reference simplifying overall system design. The device has been designed to interface efficiently to industry standard microprocessors and DSPs, including the TMS320 family.| Part No. | WM2638 |
|---|---|
| Datasheet | WM2638 Download |
| Manufacturer |  Wolfson Microelectronics plc |
| Description | Dual 12-Bit Serial Input Voltage Output DAC with Internal reference |
| Buy | Stock & Price |
FEATURES
●●
●
● Two 12-bit voltage output DACs Single 2.7V to 5.5V supply operation DNL ± 0.4 LSBs, INL ± 2 LSBs Low power consumption
● 12mW typical in fast mode
● 6mW typical in slow mode TMS320, (Q)SPI™ , and Microwire™ compatible serial interface Programmable settling time 1µ s or 3.5µ s typical Power down mode 10nA
DESCRIPTION
A software controlled power down mode is provided that reduces current consumption to 10nA. A reference voltage may also be supplied externally. The WM2638 is programmed with a 16-bit serial word comprising of a latch address, mode control bits and DAC or control data. Excellent performance is delivered with a typical DNL of 0.4LSBs. The programmable settling time allows the designer to optimise speed versus power consumption. The output stage is buffered by a x2 gain near rail-to-rail amplifier. The device is available in an 8-pin SOIC package ideal for spacecritical applications. Commercial temperature (0° to 70°C) and Industrial temperature (-40° to 85°C) variants are supported.
