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
· TMS320, (Q) SPITM, and MicrowireTM compatible serial interface
· Programmable settling time of 1ms or 3.5ms typical
· Power down mode 10nA
Application· 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 generationPinout
Specifications
| CONDITION |
MIN |
MAX |
| Supply voltage, VDD to AGND |
|
7V |
| Digital input voltage |
-0.3V |
VDD + 0.3V |
| Reference input voltage |
-0.3V |
VDD + 0.3V |
| Operating temperature range, TA |
WM2637CD
WM2637ID |
0°C
-40°C |
70°C
85°C |
| Storage temperature |
-65°C |
150°C |
| Lead temperature 1.6mm (1/16 inch) soldering for 10 seconds |
|
260°C |
DescriptionThe WM2637 is a dual 10-bit voltage output, resistor string, digitalto-analogue converter. A software controlled power down mode isprovided that reduces current consumption to 10nA.
The WM2637 features an internal programmable voltage referencesimplifying overall system design. A reference voltage may also besupplied externally.
The WM2637 has been designed to interface efficiently to industrystandard microprocessors and DSPs, including the TMS320family. The WM2637 is programmed with a 16-bit serial wordcomprising of a latch address, mode DAC control bits and DAC orcontrol data.
Excellent performance is delivered with a typical DNL of 0.1 LSBs.The programmable settling time allows the designer to optimizespeed versus power consumption. The output stage is buffered bya x2 gain near rail-to-rail amplifier.
The WM2637 is available in an 8-pin SOIC package ideal for spacecriticalapplications. Commercial temperature (0° to 70°C) andindustrial temperature (-40° to 85 °C) variants are supported.
WM2637 Data Sheet
