10-Bit, Low-Power, Quad, Voltage-Output DAC With Serial .

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19-2123; Rev 4; 5/0810-Bit, Low-Power, Quad, Voltage-OutputDAC with Serial InterfaceThe MAX5741 quad, 10-bit, low-power, buffered voltage-output, digital-to-analog converter (DAC) is packaged in a space-saving 10-pin µMAX package (5mm 3mm). The wide supply voltage range of 2.7V to 5.5V and 229µA supply current accommodates lowpower and low-voltage applications. DAC outputsemploy on-chip precision output amplifiers that swingrail-to-rail. The MAX5741’s reference input accepts avoltage range from 0 to VDD. In power-down the reference input is high impedance, further reducing the system’s total power consumption.The 20MHz, 3-wire SPI , QSPI , MICROWIRE andDSP-compatible serial interface saves board space andreduces the complexity of opto- and transformer-isolatedapplications. The MAX5741 on-chip power-on reset(POR) circuit resets the DAC outputs to zero and loadsthe output with a 100kΩ resistor to ground. This providesadditional safety for applications that drive valves or othertransducers that need to be off on power-up. TheMAX5741’s software controlled power-down reducessupply current to less than 1µA and provides softwareselectable output loads (1kΩ, 100kΩ, or high impedance)while in power-down. The MAX5741 is specified over the-40 C to 125 C extended temperature range and available in a 10-pin µMAX packageFeatures Ultra-Low Power Consumption229µA at VDD 3.6V271µA at VDD 5.5V Wide 2.7V to 5.5V Single-Supply Range 10-Pin µMAX Package 0.3µA Power-Down Current Guaranteed 10-Bit Monotonicity ( 1LSB DNL) Safe Power-Up Reset to Zero Volts at DAC Output Three Software-Selectable Power-DownImpedances (100kΩ, 1kΩ, Hi-Z) Fast 20MHz, 3-Wire SPI, QSPI, and MICROWIRECompatible Serial Interface Rail-to-Rail Output Buffer Amplifiers Schmitt-Triggered Logic Inputs for DirectInterfacing to Optocouplers Wide -40 C to 125 C Operating TemperatureRangeOrdering InformationApplicationsAutomatic TuningPARTTEMP RANGEPIN-PACKAGEGain and Offset AdjustmentMAX5741EUB-40 C to 85 C10 µMAXPower Amplifier ControlMAX5741AUB-40 C to 125 C10 µMAXProcess Control I/O BoardsBattery-Powered InstrumentsVCO ControlPin ConfigurationTOP VIEWCS 1Functional Diagram appears at end of data sheet.µMAX is a registered trademark of Maxim Integrated Products,Inc.SPI and QSPI are trademarks of Motorola, Inc.MICROWIRE is a trademark of National Semiconductor, Corp.SCLK2VDD3GNDDIN10 OUTD9OUTC8OUTB47OUTA56REFMAX5741µMAXMaxim Integrated ProductsFor pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at www.maxim-ic.com.1MAX5741General Description

MAX574110-Bit, Low-Power, Quad, Voltage-OutputDAC with Serial InterfaceABSOLUTE MAXIMUM RATINGSVDD to GND .-0.3V to 6VOUT , SCLK, DIN, CS, REF to GND.-0.3 to (VDD 0.3V)Maximum Continuous Current Into Any Pin. 50mAContinuous Power Dissipation (TA 70 C)10-Pin µMAX (derate 6.9 mW/ C above 70 C) .555mWOperating Temperature Range .-40 C to 125 CJunction Temperature.-65 C to 150 CStorage Temperature Range .-65 C to 150 CLead Temperature (soldering, 10s) . 300 CStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.ELECTRICAL CHARACTERISTICS(VDD 2.7V to 5.5V, GND 0, VREF VDD, RL 5kΩ, CL 200pF, TA TMIN to TMAX, unless otherwise noted. Typical values areVDD 5V, TA 25 C.)PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSSTATIC ACCURACY (Note 1)ResolutionN10Integral Nonlinearity ErrorINL(Note 2)Differential Nonlinearity ErrorDNLGuaranteed monotonic (Note 2)Zero-Code ErrorOECode 000GECode 3FF hex 0.50.4Zero-Code Error TempcoGain Error 4LSB 1LSB1.5% of FS2.3PSRRppm/ C 3Gain-Error TempcoPower-Supply Rejection RatioBitsCode 3FF hex, VDD 10%% of FS0.26ppm/ C58.8dBREFERENCE INPUTReference Input Voltage RangeVREFReference Input ImpedanceRREFPower-Down Reference Current0In operation32VDD45In power-down mode2In power-down mode (Note 3)163VkΩMΩ10µADAC OUTPUTOutput Voltage RangeNo load (Note 4)DC Output ImpedanceCode 200 hex0.8Short-Circuit CurrentWake-Up TimeOutput Leakage Current20VDDVDD 3V15VDD 5V48VDD 3V8VDD 5V8Power-down mode output high impedance 18VΩmAµsnA

10-Bit, Low-Power, Quad, Voltage-OutputDAC with Serial Interface(VDD 2.7V to 5.5V, GND 0, VREF VDD, RL 5kΩ, CL 200pF, TA TMIN to TMAX, unless otherwise noted. Typical values areVDD 5V, TA 25 C.)PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSDIGITAL INPUTS (SCLK, DIN, CS)Input High VoltageVIHVDD 3V, 5VInput Low VoltageVILVDD 3V, 5VInput Leakage CurrentIINDigital inputs 0 or VDDInput CapacitanceCIN0.7 VDDV 0.10.3 VDDV 1µA5pFDYNAMIC PERFORMANCEVoltage Output Slew RateSR0.5Voltage Output Settling Time100 hex to 300 hex (Note 3)Digital FeedthroughAny digital inputs from 0 to VDDDigital-Analog Glitch ImpulseMajor carry transition (Code 1FF hex toCode 200 hex)4DAC-to-DAC CrosstalkV/µs10µs0.15nV-s12nV-s2.4nV-sPOWER REQUIREMENTSSupply Voltage RangeVDDSupply Current with No LoadIDDPower-Down Supply CurrentIDDPD2.75.5VAll digital inputs at 0 or VDD 3.6V230395All digital inputs at 0 or VDD 5.5V270420All digital inputs at 0 or VDD 5.5V0.291µATYPMAXUNITS20MHzµATIMING CHARACTERISTICS(VDD 2.7V to 5.5V, GND 0, TA TMIN to TMAX, unless otherwise noted.)PARAMETERSYMBOLCONDITIONSMINSCLK Clock Frequencyf SCLK0SCLK Pulse Width HightCH25nsSCLK Pulse Width LowtCL25nsCS Fall to SCLK Rise Setup TimetCSS10nsSCLK Fall to CS Rise Setup TimetCSH10nstDS15nstDH0nstCSW80nsDIN to SCLK Fall Setup TimeDIN to SCLK Fall Hold TimeCS Pulse Width HighNote 1:Note 2:Note 3:Note 4:Note 5:DC specifications are tested without output loads.Linearity guaranteed from code 29 to code 995.Limited with test conditions.Offset and gain error limit the FSR.Guaranteed by design.3MAX5741ELECTRICAL CHARACTERISTICS (continued)

Typical Operating Characteristics(VREF VDD, TA 25 C, unless otherwise noted.)INTEGRAL NONLINEARITYvs. CODE, TA 25 C0.1520.10VDD 3VDNL (LSB)0-1VDD 5V-0.05-0.15-3-4-9-14VDD 3V AND 6512768CODECODECODEINTEGRAL NONLINEARITYvs. CODE, TA 40 CDIFFERENTIAL NONLINEARITYvs. CODE, TA -40 CTOTAL UNADJUSTED ERRORvs. CODE, TA -40 C0.1520.10VDD 5VDNL (LSB)10-1VDD 3V0.050-0.05-0.10-2-0.15-311024MAX5741 toc0630.20TOTAL UNADJUSTED ERROR (%)0.25MAX5741 toc044MAX5741 toc050-4VDD 3V AND 024256512768CODECODECODEINTEGRAL NONLINEARITYvs. CODE, TA 125 CDIFFERENTIAL NONLINEARITYvs. CODE, TA 125 CTOTAL UNADJUSTED ERRORvs. CODE, TA 125 C0.25MAX5741 toc07430.200.1520.10VDD 3VDNL (LSB)10-1VDD 5V0.050-0.05-0.10-2-0.15-311024MAX5741 toc090TOTAL UNADJUSTED ERROR (%)INL (LSB)0-0.10-2-4VDD 3V AND 5V-9-14-19-0.20-4-0.250256512CODE40.05MAX5741 toc08INL (LSB)11MAX5741 toc030.20TOTAL UNADJUSTED ERROR (%)0.25MAX5741 toc023TOTAL UNADJUSTED ERRORvs. CODE, TA 25 CDIFFERENTIAL NONLINEARITYvs. CODE, TA 25 CMAX5741 toc014INL (LSB)MAX574110-Bit, Low-Power, Quad, Voltage-OutputDAC with Serial 81024

10-Bit, Low-Power, Quad, Voltage-OutputDAC with Serial InterfaceSOURCE-AND-SINK CURRENT CAPABILITY(VDD 3V)3CODE 3FFHEX, SOURCINGCURRENTFROM OUT2.50-1MINIMUM DNL1.5CODE 100 HEX,SINKING CURRENTINTO OUT1.0MINIMUM INL-2-4020406080100 1201.5CODE 000 HEX,SINKING CURRENT INTO OUTCODE 100 HEX,SINKING CURRENTINTO OUTCODE 000 HEX,SINKING CURRENT INTO OUT0.5002TEMPERATURE ( C)46810121416024ISOURCE/SINK (mA)810121416POWER-DOWN SUPPLY CURRENTvs. SUPPLY VOLTAGE250CODE 3FF HEX210190170150MAX5741 toc14270300POWER-DOWN SUPPLY CURRENT (nA)MAX5741 toc132902306ISOURCE/SINK (mA)SUPPLY CURRENTvs. SUPPLY .24.7SUPPLY VOLTAGE (V)SUPPLY VOLTAGE (V)SUPPLY CURRENT vs. CS INPUT VOLTAGESUPPLY CURRENTvs. TEMPERATURE290MAX5741 toc15900800600VDD 5V500400300VDD 3V200280SUPPLY CURRENT (µA)7005.2MAX5721 toc16SUPPLY CURRENT (µA)CODE 300 HEX,SOURCING CURRENTFROM OUT2.52.00-40 -20VDD 5V3.01.00.5-34.03.5CODE 300HEX, SOURCINGCURRENTFROM OUT2.0MAXIMUM INLCODE 3FF HEX, SOURCINGCURRENT FROM OUT4.5VOUT (V)MAXIMUM DNLVOUT (V)1SUPPLY CURRENT (µA)INL AND DNL (LSB)25.0MAX5741 toc113.0MAX5741 toc104SOURCE-AND-SINK CURRENT CAPABILITY(VDD 5V)MAX5742 toc12WORST-CASE INL AND DNLvs. TEMPERATURE270VDD 5.5V260250240230220VDD 3.6V210100200001234CS INPUT VOLTAGE (V)5-40-20020406080100 120TEMPERATURE ( C)5MAX5741Typical Operating Characteristics (continued)(VREF VDD, TA 25 C, unless otherwise noted.)

MAX574110-Bit, Low-Power, Quad, Voltage-OutputDAC with Serial InterfaceTypical Operating Characteristics (continued)(VREF VDD, TA 25 C, unless otherwise noted.)FULL-SCALE SETTLING TIME (VDD 5V)FULL-SCALE SETTLING TIME (VDD 5V)MAX5741 toc17MAX5741 E 000 TO 3FF HEXRL 5kΩCL 200pFCODE 3FF HEX TO 000RL 5kΩCL 200pF1µs/div1µs/divHALF-SCALE SETTLING TIME (VDD 3V)HALF-SCALE SETTLING TIME (VDD 3V)MAX5741 toc19MAX5721 E 100 HEX TO 300 HEXRL 5kΩCL 200pFCODE 300 HEX TO 100 HEXRL 5kΩCL 200pF1µs/div1µs/divEXITING POWER-DOWN (VDD 5V)DIGITAL-TO-ANALOG GLITCH IMPULSE(VDD 5V)MAX5741 toc22MAX5741 toc21VSCLK5V/divCODE 200 HEX5µs/div6SCLK,fSCLK 500kHz2V/divVOUT1V/divCODE 1FF HEXTO 200 HEXVOUTAC-COUPLED,20mV/div1µs/div

10-Bit, Low-Power, Quad, Voltage-OutputDAC with Serial InterfaceDIGITAL-TO-ANALOG GLITCH IMPULSE(VDD 5V)DIGITAL-TO-ANALOG GLITCH IMPULSE(VDD 3V)MAX5741 toc24MAX5741 toc23CODE 1FF HEXTO 200 HEXSCLK,fSCLK 500kHz,2V/divSCLK,fSCLK ,50mV/divCODE 200 HEXTO 1FF HEX1µs/div1µs/divPOWER-ON RESET, FAST RISE TIME(VDD 5V)DIGITAL-TO-ANALOG GLITCH IMPULSE(VDD 3V)MAX5741 toc26MAX5741 toc25SCLK,fSCLK 500kHz,1V/divCODE 200 HEXTO 1FF HEXVDD2V/divVOUTAC-COUPLED,20mV/divVDD RISETIME 20µs20µs/div1µs/divPOWER-ON RESET, FAST RISE TIME(VDD 3V)POWER-ON RESET, SLOW RISE TIME(VDD 5V)MAX5741 toc28MAX5741 toc27VDD RISETIME 76µsVDD2V/divVDD2V/divVDD RISETIME ypical Operating Characteristics (continued)(VREF VDD, TA 25 C, unless otherwise noted.)

MAX574110-Bit, Low-Power, Quad, Voltage-OutputDAC with Serial InterfaceTypical Operating Characteristics (continued)(VDD 3V, VREF VDD, TA 25 C, unless otherwise noted.)POWER-ON RESET, SLOW RISE-TIME(VDD 3V)CLOCK FEEDTHROUGH (VDD 5V)MAX5741 toc29MAX5741 toc30VDD2V/divSCLK,2V/divVDD RISETIME 72µsVOUT E 200 HEX, fSCLK 50kHz40µs/divLINE TRANSIENT RESPONSE(VDD 5V)CLOCK FEEDTHROUGH (VDD 3V)MAX5741 toc31MAX5741 toc32SCLK,2V/divVDD,AC-COUPLED,100mV/divVOUT ODE 200 HEX, fSCLK 50kHz20µs/divLINE TRANSIENT RESPONSE(VDD 3V)CROSSTALK (VDD 5V)MAX5741 toc34MAX5741 toc33VDD,AC-COUPLED,100mV/divVOUTA,2V/divCODE 3FF HEXTO 008 0µs/div82µs/div

10-Bit, Low-Power, Quad, Voltage-OutputDAC with Serial InterfacePINNAMEFUNCTION1CSChip-Select Input2SCLKSerial Clock Input3VDDPower-Supply Input4GNDGround5DINSerial Data Input6REFExternal Reference Voltage Input7, 8, 9, 10OUTA–OUTDDAC Voltage Outputs. Power-on reset sets DAC registers to zero, and internally connectsOUT to GND with 100kΩ resistor.Detailed DescriptionThe MAX5741 contains four 10-bit, voltage-output, lowpower digital-to-analog converters (DACs). Each DACemploys a resistor word string architecture that converts a 10-bit digital input word to an equivalent analogoutput voltage proportional to the applied referencevoltage. The MAX5741 shares one reference input(REF) between all four DACs. The MAX5741 includesrail-to-rail output buffer amplifiers for each DAC, andinput logic for simple microprocessor (µP), and CMOSinterfaces. The power-supply range is from 2.7V to 5.5V (Functional Diagram). The MAX5741’s referenceinput accepts a voltage range from 0 to VDD. In powerdown mode the reference input is high impedance. TheMAX5741 is compatible with the 3-wire SPI, QSPI,MICROWIRE, and DSP serial interface with Schmitt-triggered logic inputs.Reference Input and DAC Output RangeThe reference input accepts positive DC and AC signals. The voltage at REF sets the full-scale output voltage of the four DACs. The reference input voltagerange is 0 to VDD. The impedance at REF is 45kΩ. Thevoltage at REF can vary from GND to VDD. The outputvoltages (VOUT ) are represented by a digitally programmable voltage source as:VOUT (VREF D) / 210where D is the decimal equivalent of binary DAC inputcode ranging from 0 to 1023. VREF is the voltage atREF.Output Buffer AmplifiersAll DACs are internally buffered at the output. Thebuffer amplifiers have both rail-to-rail common modeand (GND to VREF) output voltage range. The buffersare unity-gain stable with CL 200pF and RL 5kΩ.Buffer amplifiers are disabled during power-up andindividual DAC outputs are shorted to GND through a100kΩ resistor. Buffer amplifiers can individually or altogether be powered-down by programming the inputregister control bits. During power down, contents ofthe input and DAC registers remain the same. Onwake-up all DAC outputs are restored to their prepower down voltage values.Power-Down ModeIn power-down mode, the DAC outputs