MAX500 19-1016 Rev 2 2/96 CMOS, Quad, Serial-Interface 8-Bit DAC General Description Features The MAX500 is a quad, 8-bit, voltage-output digital-to- Buffered Voltage Outputs analog converter (DAC) with a cascadable serial inter- Double-Buffered Digital Inputs face. The IC includes four output buffer amplifiers and input logic for an easy-to-use, two- or three-wire serial Microprocessor and TTL/CMOS Compatible interface. In a system with several MAX500s, only one Requires No External Adjustments serial data line is required to load all the DACs by cas- cading them. The MAX500 contains double-buffered Two- or Three-Wire Cascadable Serial Interface logic and a 10-bit shift register that allows all four DACs 16-Pin DIP/SO Package and 20-Pin LCC to be updated simultaneously using one control signal. There are three reference inputs so the range of two of Operates from Single or Dual Supplies the DACs can be independently set while the other two DACs track each other. The MAX500 achieves 8-bit performance over the full Ordering Information operating temperature range without external trimming. PART TEMP. RANGE PIN-PACKAGE ERROR (LSB) Applications MAX500ACPE 0C to +70C 16 Plastic DIP 1 MAX500BCPE 0C to +70C 16 Plastic DIP 2 Minimum Component Count Analog Systems MAX500ACWE 0C to +70C 16 Wide SO 1 Digital Offset/Gain Adjustment MAX500BCWE 0C to +70C 16 Wide SO 2 Industrial Process Control MAX500BC/D 0C to +70C Dice* 2 Arbitrary Function Generators MAX500AEPE -40C to +85C 16 Plastic DIP 1 Automatic Test Equipment MAX500BEPE -40C to +85C 16 Plastic DIP 2 MAX500AEWE -40C to +85C 16 Wide SO 1 MAX500BEWE -40C to +85C 16 Wide SO 2 MAX500AEJE -40C to +85C 16 CERDIP 1 Functional Diagram MAX500BEJE -40C to +85C 16 CERDIP 2 MAX500AMJE -55C to +125C 16 CERDIP 1 V C REF AGND MAX500BMJE -55C to +125C 16 CERDIP 2 SRO DGND V V LDAC V A/B V D SS DD REF REF MAX500AMLP -55C to +125C 20 LCC 1 MAX500BMLP -55C to +125C 20 LCC 2 V A OUT *Contact factory for dice specifications. INPUT DAC DAC A REG A REG A Pin Configurations V B OUT TOP VIEW 10/11- INPUT DAC DAC B BIT REG B REG B V B V C OUT 1 OUT 16 SHIFT V A REGISTER V D OUT 2 15 OUT V C OUT V V SS 3 14 DD INPUT DAC DAC C REG C REG C MAX500 V A/B REF VREFC 4 13 AGND 5 V D 12 REF V D OUT DGND INPUT DAC 6 11 SRO DAC D REG D REG D LDAC SCL 7 10 CONTROL LOGIC SDA 8 9 LOAD MAX500 DIP/SO LOAD SDA SCL Pin Configurations continued on last page. Maxim Integrated Products 1 For free samples & the latest literature: CMOS, Quad, Serial-Interface 8-Bit DAC ABSOLUTE MAXIMUM RATINGS Power Requirements Wide SO (derate 9.52mW/C above +70C)................762mW V to AGND...........................................................-0.3V, +17V CERDIP (derate 10.00mW/C above +70C)...............800mW DD V to DGND ..........................................................-0.3V, +17V LCC (derate 9.09mW/C above +70C).......................727mW DD V to DGND..................................................-7V, (V + 0.3V) Operating Temperature Ranges SS DD V to V ...............................................................-0.3V, +24V MAX500 C ....................................................0C to + 70C DD SS Digital Input Voltage to DGND ....................-0.3V, (V + 0.3V) MAX500 E ...................................................-40C to +85C DD V to AGND .............................................-0.3V, (V + 0.3V) MAX500 M ................................................-55C to +125C REF DD V to AGND (Note 1)...............................-0.3V, (V + 0.3V) Storage Temperature Range .............................-65C to +150C OUT DD Power Dissipation (T = +70C) Lead Temperature (soldering, 10sec) .............................+300C A Plastic DIP (derate 10.53mW/C above +70C)............842mW Note 1: The outputs may be shorted to AGND, provided that the power dissipation of the package is not exceeded. Typical short-circuit current to AGND is 25mA 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 CHARACTERISTICSDual Supplies (V = +11.4V to +16.5V, V = -5V 10%, AGND = DGND = 0V, V = +2V to (V - 4V), T = T to T , unless otherwise noted.) DD SS REF DD A MIN MAX PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCE Resolution 8 Bits MAX500A 1 V = 15V 5%, DD Total Unadjusted Error LSB V = 10V REF MAX500B 2 MAX500A 1/2 Relative Accuracy LSB MAX500B 1 Differential Nonlinearity Guaranteed monotonic 1 LSB MAX500A 1/2 Full-Scale Error LSB MAX500B 1 Full-Scale Tempco V = 10V 5 ppm/C REF MAX500A 15 T = +25C A MAX500B 20 Zero-Code Error mV MAX500A 20 T = T to T A MIN MAX MAX500B 30 Zero-Code Tempco 30 V/C REFERENCE INPUT Reference Input Range 2V - 4 V DD V C, V D 11 REF REF Reference Input Resistance k V A/B 5.5 REF Reference Input Capacitance T = +25C, code dependent (Note 2) 100 pF A Channel-to-Channel Isolation T = +25C (Notes 2, 3) -60 dB A AC Feedthrough T = +25C (Notes 2, 3) -70 dB A DIGITAL INPUTS Digital Input High Voltage V 2.4 5.5 V IH Digital Input Low Voltage V 0.8 V IL Digital Output High Voltage V I = -1mA, SRO only V - 1 V OH OUT DD Digital Output Low Voltage V I = 1mA, SRO only 0.4 V OL OUT 1 Excluding LOAD Digital Input Leakage Current (Note 4) A 30 LOAD = 0V Digital Input Capacitance T = +25C (Note 2) 8 pF A 2 MAX500