MAX532 19-0046 Rev. 1 3/94 Dual, Serial-Input, Voltage-Output, 12-Bit MDAC General Description Features The MAX532 is a complete, dual, serial-input, 12-bit Two 12-Bit MDACs with Output Amplifiers multiplying digital-to-analog converter (MDAC) with out- Fast, 6MHz 3-Wire Interface put amplifiers. No external user trims are required to achieve full specified performance. The MAX532s 3- SPI, QSPI, and Microwire Compatible wire serial interface minimizes the number of package 12V Output Swing pins, so it uses less board space than parallel-interface parts. The interface is SPI, QSPI and Microwire 10mA Output Current compatible. A serial output, DOUT, allows cascading 2.5s Settling Time to 1/2LSB of two or more MAX532s and read-back of the data written to the device. Guaranteed Monotonic Over Temperature The devices serial interface minimizes digital-noise Low Integral Nonlinearity: 1/2LSB Max feedthrough from its logic pins to its analog outputs. Serial interfacing also simplifies opto-coupler-isolated Low Gain Tempco: 2ppm/C or transformer-isolated applications. Operates from 12V to 15V Supplies The MAX532 is specified with 12V to 15V power sup- Power-On Reset plies. All logic inputs are TTL and CMOS compatible. It comes in space-saving 16-pin DIP and wide SO packages. Available in 16-Pin DIP and Wide SO Packages Applications Ordering Information Automatic Test Equipment Arbitrary Waveform Generators ERROR PART TEMP. RANGE PIN-PACKAGE (LSBs) Programmable-Gain Amplifiers MAX532ACPE 0C to +70C 16 Plastic DIP 1/2 Motion Control Systems MAX532BCPE 0C to +70C 16 Plastic DIP 1 Servo Controls MAX532ACWE 0C to +70C 16 Wide SO 1/2 MAX532BCWE 0C to +70C 16 Wide SO 1 MAX532BC/D 0C to +70C Dice* 1 Functional Diagram Ordering Information continued on last page. * Contact factory for dice specifications. V DD Pin Configuration MAX532 DACA LATCH RFBA TOP VIEW VREFA DACA VOUTA RFBA V 1 16 DD DIN AGNDA VREFA LDAC 2 15 24-BIT SHIFT DOUT VOUTA SCLK CS REGISTER 3 14 AGNDA MAX532 4 13 DIN RFBB CS AGNDB 5 12 DOUT DACB VOUTB VOUTB 6 11 SCLK LDAC AGNDB DACB VREFB LATCH DGND 7 10 VREFB RFBB V 8 9 SS V DGND DIP/Wide SO SS Microwire is a trademark of National Semiconductor Corp. SPI and QSPI are trademarks of Motorola, Inc. Maxim Integrated Products 1 Call toll free 1-800-998-8800 for free samples or literature.Dual, Serial-Input, Voltage-Output, 12-Bit MDAC ABSOLUTE MAXIMUM RATINGS Pin Voltages Operating Temperature Ranges: V to DGND, AGNDA, AGNDB........................-0.3V to +17V MAX532 C ......................................................0C to +70C DD V to DGND, AGNDA, AGNDB (Note 1) ..........+0.3V to -17V MAX532 E ....................................................-40C to +85C SS VREFA, VREFB.............................(V - 0.3V) to (V + 0.3V) MAX532 MJE ................................................-55C to +125C SS DD AGNDA, AGNDB.....................(DGND - 0.3V) to (V + 0.3V) Junction Temperatures: DD VOUTA, VOUTB ...........................(V - 0.3V) to (V + 0.3V) MAX532 C , E ........................................................+150C SS DD RFBA, RFBB.................................(V - 0.3V) to (V + 0.3V) MAX532 MJE...............................................................+175C SS DD SCLK, DIN, DOUT, LDAC, CS ..(DGND - 0.3V) to (V + 0.3V) Storage Temperature Range ........................... -65C to +160C DD DOUT Sink Current .............................................................20mA Lead Temperature (soldering, 10sec) ........................... +300C Continuous Power Dissipation (T = +70C) A Plastic DIP (derate 10.53mW/C above +70C) ..........842mW Wide SO (derate 9.52mW/C above +70C)................762mW CERDIP (derate 10.00mW/C above +70C)...............800mW Note 1: If V is open-circuited with V and either AGND applied, the V pin will float positive, exceeding the Absolute Maximum Ratings. SS DD SS A Schottky diode connected between V and GND ensures the maximum ratings will not be exceeded. SS 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 = 11.4V to 16.5V, V = -11.4V to -16.5V, AGNDA = AGNDB = DGND = 0V, VREFA and VREFB = +10V, R = 2k, DD SS L C = 100pF, VOUT connected to RFB , T = T to T , unless otherwise noted.) L A MIN MAX PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCE (Note 1) Resolution 12 Bits MAX532A 1/2 Relative Accuracy INL LSB MAX532B 1 Differential Nonlinearity Guaranteed monotonic 1 LSB T = +25C, MAX532 2 A DAC latch loaded T = T to T , MAX532A Zero-Code Offset Error 3 mV A MIN MAX with all 0s T = T to T , MAX532B 4 A MIN MAX Zero-Code Offset DAC latch loaded with all 0s 5 V/C Temperature Coefficient MAX532A 2 T = +25C, DAC latch A loaded with all 1s MAX532B 5 Gain Error LSB MAX532A 4 T = T to T , DAC A MIN MAX latch loaded with all 1s MAX532B 7 Gain-Error Temperature ppm/C 2 Coefficient of FSR REFERENCE INPUTS (VREFA, VREFB) VREFA, VREFB Input 810 13 k Resistance VREFA, VREFB Input 0.5 3.0 % Resistance Matching 2 MAX532