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WM2637

Wolfson Microelectronics plc
Part Number WM2637
Manufacturer Wolfson Microelectronics plc
Description Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference
Published Apr 17, 2005
Detailed Description WM2637 Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference Production Data, Rev 1.0, July 1999 FEATURES...
Datasheet PDF File WM2637 PDF File

WM2637
WM2637


Overview
WM2637 Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference Production Data, Rev 1.
0, July 1999 FEATURES • • • • • Dual 10-bit voltage output DAC Single 2.
7V to 5.
5V supply DNL ± 0.
1 LSBs, INL ± 0.
4 LSBs Internal programmable voltage reference Low power consumption: • 5.
5 mW, slow mode - 5V supply • 3.
3 mW, slow mode - 3V supply TM TM TMS320, (Q) SPI , and Microwire compatible serial interface Programmable settling time of 1µ s or 3.
5µ s typical Power down mode 10nA DESCRIPTION The WM2637 is a dual 10-bit voltage output, resistor string, digitalto-analogue converter.
A software controlled power down mode is provided that reduces current consumption to 10nA.
The WM2637 features an internal programmable voltage reference simplifying overall system design.
A reference voltage may also be supplied externally.
The device has been designed to interface efficiently to industry standard microprocessors and DSPs, including the TMS320 family.
The WM2637 is programmed with a 16-bit serial word comprising of a latch address, mode DAC control bits and DAC or control data.
Excellent performance is delivered with a typical DNL of 0.
1 LSBs.
The programmable settling time allows the designer to optimize 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.
• • • APPLICATIONS • • • • • • • Battery powered test instruments Digital offset and gain adjustment Battery operated/remote industrial controls Machine and motion control devices Wireless telephone and communication systems Speech synthesis Arbitrary waveform generation ORDERING INFORMATION DEVICE WM2637CD WM2637ID TEMP.
RANGE 0° to 70°C -40° to 85°C PACKAGE 8-pin SOIC 8-pin SOIC BLOCK DIAGRAM VDD (8) TYPICAL PERFORMANCE 0.
2 5V = VDD, VREF = External, Speed = Slow mode, Loa...


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