MAX541/MAX542 19-1082 Rev 2 12/99 +5V, Serial-Input, Voltage-Output, 16-Bit DACs General Description Features The MAX541/MAX542 are serial-input, voltage-output, Full 16-Bit Performance Without Adjustments 16-bit digital-to-analog converters (DACs) that operate +5V Single-Supply Operation from a single +5V supply. They provide 16-bit perfor- Low Power: 1.5mW mance (1LSB INL and DNL) over temperature without any adjustments. The DAC output is unbuffered, result- 1s Settling Time ing in a low supply current of 0.3mA and a low offset Unbuffered Voltage Output Directly Drives 60k error of 1LSB. Loads The DAC output range is 0V to V . For bipolar opera- REF SPI/QSPI/MICROWIRE-Compatible Serial Interface tion, matched scaling resistors are provided in the MAX542 for use with an external precision op amp Power-On Reset Circuit Clears DAC Output to 0V (such as the MAX400), generating a V output REF (unipolar mode) swing. The MAX542 also includes Kelvin-sense con- Schmitt Trigger Inputs for Direct Optocoupler nections for the reference and analog ground pins to Interface reduce layout sensitivity. A 16-bit serial word is used to load data into the DAC latch. The 10MHz, 3-wire serial interface is compatible Ordering Information with SPI/QSPI/MICROWIRE, and it also interfaces directly with optocouplers for applications requiring isola- INL PART TEMP. RANGE PIN-PACKAGE (LSB) tion. A power-on reset circuit clears the DAC output to 0V (unipolar mode) when power is initially applied. MAX541ACPA 0C to +70C 8 Plastic DIP 1 The MAX541 is available in 8-pin plastic DIP and SO MAX541BCPA 0C to +70C 8 Plastic DIP 2 packages. The MAX542 is available in 14-pin plastic MAX541CCPA 0C to +70C 8 Plastic DIP 4 DIP and SO packages. MAX541ACSA 0C to +70C 8 SO 1 Applications MAX541BCSA 0C to +70C 8 SO 2 MAX541CCSA 0C to +70C 8 SO 4 High-Resolution Offset and Gain Adjustment Ordering Information continued at end of data sheet. Industrial Process Control Automated Test Equipment Data-Acquisition Systems Functional Diagrams V DD General Description RFB TOP VIEW MAX542 R FB INV R INV REFF RFB 14 V 1 DD 16-BIT DAC OUT OUT 2 13 INV REFS MAX542 AGNDF AGNDF 3 12 DGND 1 8 V OUT DD AGNDS 16-BIT DATA LATCH CS AGNDS 11 4 LDAC 2 7 DGND AGND LDAC CONTROL MAX541 REFS DIN 5 10 SCLK LOGIC REF 3 6 DIN REFF 6 9 N.C. DIN SERIAL INPUT REGISTER CS 4 5 SCLK CS 7 8 SCLK DGND DIP/SO DIP/SO Functional Diagrams continued at end of data sheet. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Maxim Integrated Products 1 For free samples & the latest literature: +5V, Serial-Input, Voltage-Output, 16-Bit DACs ABSOLUTE MAXIMUM RATINGS V to DGND ...........................................................-0.3V to +6V 14-Pin Plastic DIP (derate 10.00mW/C above +70C)...800mW DD CS, SCLK, DIN, LDAC to DGND ..............................-0.3V to +6V 14-Pin SO (derate 8.33mW/C above +70C) ...............667mW REF, REFF, REFS to AGND ........................-0.3V to (V + 0.3V) 14-Pin Ceramic SB (derate 10.00mW/C above +70C ..800mW DD AGND, AGNDF, AGNDS to DGND........................-0.3V to +0.3V Operating Temperature Ranges OUT, INV to AGND, DGND ......................................-0.3V to V MAX541 C A/MAX542 C D............................0C to +70C DD RFB to AGND, DGND..................................................-6V to +6V MAX541 E A/MAX542 E D............................-40C to +85C Maximum Current into Any Pin............................................50mA MAX542CMJD.................................................-55C to +125C Continuous Power Dissipation (T = +70C) Storage Temperature Range .............................-65C to +150C A 8-Pin Plastic DIP (derate 9.09mW/C above +70C).....727mW Lead Temperature (soldering, 10s) .................................+300C 8-Pin SO (derate 5.88mW/C above +70C) .................471mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +5V 5%, V = +2.5V, AGND = DGND = 0, T = T to T , unless otherwise noted.) DD REF A MIN MAX PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCEANALOG SECTION (R = ) L Resolution N 16 Bits MAX54 A 0.5 1.0 Integral Nonlinearity INL V = 5V MAX54 B 0.5 2.0 LSB DD MAX54 C 0.5 4.0 Differential Nonlinearity DNL Guaranteed monotonic 0.5 1.0 LSB T = +25C 1 A Zero-Code Offset Error ZSE LSB T = T to T 2 A MIN MAX Zero-Code Tempco ZS T = T to T 0.05 ppm/C TC A MIN MAX T = +25C 5 A Gain Error (Note 1) LSB T = T to T 10 A MIN MAX Gain-Error Tempco 0.1 ppm/C DAC Output Resistance R (Note 2) 6.25 k OUT R /R 1.0 FB INV Bipolar Resistor Matching MAX542 Ratio error 0.015 % T = +25C 10 A Bipolar Zero Offset Error MAX542 LSB T = T to T 20 A MIN MAX Bipolar Zero Tempco BZS MAX542 0.5 ppm/C TC Power-Supply Rejection PSR 4.75V V 5.25V 1.0 LSB DD REFERENCE INPUT Reference Input Range V (Note 3) 2.0 3.0 V REF Unipolar mode 11.5 Reference Input Resistance R k REF (Note 4) MAX542, bipolar mode 9.0 DYNAMIC PERFORMANCEANALOG SECTION (R = , unipolar mode) L Voltage-Output Slew Rate SR C = 10pF (Note 5) 25 V/s L 1 Output Settling Time 1 s to / LSB of FS, C = 10pF 2 L 2 MAX541/MAX542