Features: 10 MHz multiplying bandwidth50 MHz serial interface2.5 V to 5.5 V supply operation±10 V reference inputPin compatible 8-, 10-,and 12-bit DACsExtended temperature range: −40°C to +125°C16-lead TSSOP packageGuaranteed monotonicPower-on resetDaisy-chain modeReadback function0.5 A typical current consumption ApplicationPortable battery-powered applicationsWaveform generatorsAnalog processingInstrumentation applicationsProgrammable amplifiers and attenuatorsDigitally controlled calibrationProgrammable filters and oscillatorsComposite videoUltrasoundGain, offset, and voltage trimmingPinout
Specifications
| Resolution (Bits) |
12bit |
| DAC Update Rate |
2.47MSPS |
| DAC Settling Time |
80ns |
| # DAC Outputs |
2 |
| DAC Type |
Current Out |
| DAC Input Format |
Ser,SPI |
| Output FSR |
(-Vref),(Bip Vref),(Uni Vref),User Def. Range/Offset |
| Ref Int/Ext |
Ext |
| Supply Vnom |
Single(+2.7),Single(+3),Single(+3.3),Single(+5) |
| Pwr Diss |
3.5W |
| Package |
SOP |
| Parameter |
Rating |
VDD to GND
VREF, RFB to GND
IOUT1, IOUT2 to GND
Input Current to Any Pin except Supplies
Logic Inputs and Output1
Operating Temperature Range
Extended (Y Version)
Storage Temperature Range
Junction Temperature
16-Lead TSSOP JA Thermal Impedance
Lead Temperature, Soldering (10 s)
IR Reflow, Peak Temperature (< 20 s) |
−0.3 V to +7 V
−12 V to +12 V
−0.3 V to +7 V
±10 mA
−0.3 V to VDD + 0.3 V
−40°C to +125°C
−65°C to +150°C
150°C
150°C/W
300°C
235°C |
DescriptionThe AD5429/AD5439/AD54491 are CMOS 8-, 10-, and 12-bit dual-channel current output digital-to-analog converters, respectively.These devices operate from a 2.5 V to 5.5 V power supply, making them suited to battery-powered and otherapplications.The applied external reference input voltage (VREF) determines the full-scale output current. An integratedfeedback resistor (RFB) provides temperature tracking and full-scale voltage output when combined with an externalcurrent-to-voltage precision amplifier.
These DACs AD5429/AD5439/AD54491 utilize a double-buffered, 3-wire serial interface that is compatible with SPI®, QSPI™, MICROWIRE™, and most DSPinterface standards. In addition, a serial data out pin (SDO) allows daisy-chaining when multiple packages are used. Datareadback allows the user to read the contents of the DAC register via the SDO pin. On power-up, the internal shift registerand latches are filled with zeros and the DAC outputs are at zero scale.
As a result of manufacture on a CMOS submicron process, these parts offer excellent 4-quadrant multiplication character-istics,with large signal multiplying bandwidths of 10 MHz.The AD5429/AD5439/AD5449 DAC are available in 16-lead TSSOP packages.
AD5449 Data Sheet
