LTC8043 - Serial 12-Bit Multiplying DAC in SO-8 - Linear Technology

LTC8043ELECTRICAL CHARACTERISTICSV DD = 5V, V REF = 10V, V IOUT = GND = 0V, T A = T MIN to T MAX , unless otherwise specified.ALL GRADESSYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITSDigital InputsV IH Digital Input High Voltage ● 2.4 VV IL Digital Input Low Voltage ● 0.8 VI IN Digital Input Current V IN = 0V to V DD ● 0.001 ±1 µAC IN Digital Input Capacitance V IN = 0V,(Note 3) ● 8 pFTiming Characteristics (Note 3)t DS Serial Input to Clock Setup Time ● 30 – 5 nst DH Serial Input to Clock Hold Time ● 60 25 nst SRI Serial Input Data Pulse Width ● 80 nst CH Clock Pulse Width High ● 80 nst CL Clock Pulse Width Low ● 80 nst LD Load Pulse Width ● 140 nst ASB LSB Clocked into Input Register ● 0 nsto Load DAC Register TimePower SupplyV DD Supply Voltage ● 4.75 5 5.25 VI DD Supply Current Digital Inputs = 0V or V DD ● 100 µADigital Inputs = V IH or V IN ● 500 µAThe ● denotes specifications which apply over the full operatingtemperature range.Note 1: ±0.5LSB = ±0.012% of full scale.Note 2: Using internal feedback resistor.Note 3: Guaranteed by design, not subject to test.Note 4: I OUT with DAC register loaded with all 0s.Note 5: Typical temperature coefficient is 100ppm/°C.Note 6: I OUT load = 100Ω in parallel with 13pF.Note 7: To 0.01% for a full-scale change, measured fromfalling edge of LD.Note 8: V REF = 0V. DAC register contents changed from all 0s to all 1s orfrom all 1s to all 0s.Note 9: V REF = 6V RMS at 1kHz. DAC register loaded with all 1s.Note 10: 10Hz to 100kHz between R FB and I OUT . Calculation from e n =√4KTRB where: K = Boltzmann constant (J/K°); R = resistance (Ω);T = resistor temperature (°K); B = bandwidth (Hz).BLOCK DIAGRAMWV REF140k40k40k20k40k20k40k20k40k40k10k2R FB3I OUTV DD84GNDDECODERLD5LOADBIT 1(MSB)BIT 2 BIT 3 BIT 4 BIT 12(LSB)DAC REGISTERCLK7CLKINPUT 12-BIT SHIFT REGISTERIN6SRIInformation furnished by Linear Technology Corporation is believed to be accurate and reliable.However, no responsibility is assumed for its use. Linear Technology Corporation makes no representationthat the interconnection of its circuits as described herein will not infringe on existing patent rights.8043 BD3