MAX547 19-0257 Rev 3 12/95 Octal, 13-Bit Voltage-Output DAC with Parallel Interface General Description Features The MAX547 contains eight 13-bit, voltage-output digital-to- Full 13-Bit Performance without Adjustments analog converters (DACs). On-chip precision output ampli- 8 DACs in One Package fiers provide the voltage outputs. The MAX547 operates Buffered Voltage Outputs from a 5V supply. Bipolar output voltages with up to 4.5V Calibrated Linearity voltage swing can be achieved with no external compo- nents. The MAX547 has four separate reference inputs Guaranteed Monotonic to 13 Bits each is connected to two DACs, providing different full- 5V Supply Operation scale output voltages for every DAC pair. Unipolar or Bipolar Outputs Swing to 4.5V The MAX547 features double-buffered interface logic with a 1 Fast Output Settling (5s to LSB) 2 13-bit parallel data bus. Each DAC has an input latch and a DAC latch. Data in the DAC latch sets the output voltage. The Double-Buffered Digital Inputs eight input latches are addressed with three address lines. Asynchronous Load Inputs Load Pairs of DAC Latches Data is loaded to the input latch with a single write instruction. Asynchronous CLR Input Resets DACs to Analog An asynchronous load (LD ) input transfers data from the Ground input latch to the DAC latch. The four LD inputs each control Power-On Reset Circuit Resets DACs to Analog Ground two DACs, and all DAC latches can be updated simultane- ously by asserting all LD pins. An asynchronous clear (CLR) Microprocessor and TTL/CMOS Compatible input resets the output of all eight DACs to AGND . Asserting Ordering Information CLR resets both the DAC and the input latch to bipolar zero (1000hex). On power-up, reset circuitry performs the same INL function as CLR. All logic inputs are TTL/CMOS compatible. PART TEMP. RANGE PIN-PACKAGE (LSBs) The MAX547 is available in 44-pin plastic quad flat pack MAX547ACQH 0C to +70C 44 PLCC 2 and 44-pin PLCC packages. MAX547BCQH 0C to +70C 44 PLCC 4 Applications MAX547ACMH 0C to +70C 44 Plastic FP 2 Automatic Test Equipment MAX547BCMH 0C to +70C 44 Plastic FP 4 Minimum Component-Count Analog Systems Digital Offset/Gain Adjustment MAX547BC/D 0C to +70C Dice* 4 Arbitrary Function Generators Ordering Information continued at end of data sheet. Industrial Process Controls *Contact factory for dice specifications. Avionics Equipment Pin Configurations TOP VIEW 6 5443 2 1 44 43 42 410 VOUTB 1 33 VOUTG VOUTB 7 39 VOUTG 2 VOUTA 32 VOUTH VOUTA 8 38 VOUTH V 3 31 DD V DD V 9 37 V REFAB 4 30 REFGH DD DD AGNDAB 5 29 AGNDGH 10 36 REFGH REFAB 28 6 GND LDAB AGNDAB 11 35 AGNDGH 7 MAX547 27 MAX547 LDCD LDGH LDAB 12 34 GND 26 8 LDEF CS LDCD 13 33 LDGH 9 25 D0 WR CS 14 32 LDEF 10 24 A2 D1 WR 15 31 D0 11 A1 23 D2 A2 16 30 D1 A1 17 29 D2 18 19 20 21 22 23 24 25 26 27 28 PLASTIC FP PLCC Maxim Integrated Products 1 For free samples & the latest literature: Octal, 13-Bit Voltage-Output DAC with Parallel Interface ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) DD A V to GND...............................................................-6V to +0.3V PLCC (derate 13.33mW/C above +70C)...................1067mW SS Digital Input Voltage to GND ......................-0.3V to (V + 0.3V) Plastic FP (derate 11.11mW/C above +70C )..............889mW DD REF ..........................................(AGND - 0.3V) to (V + 0.3V) Operating Temperature Ranges DD MAX547 C H.........................................................0C to +70C AGND .............................................(V - 0.3V) to (V + 0.3V) SS DD VOUT ........................................................................V to V MAX547 E H......................................................-40C to +85C DD SS Storage Temperature Range .............................-65C to +150C Maximum Current into REF Pin.......................................10mA Maximum Current into Any Other Signal Pin ....................50mA Lead Temperature (soldering, 10sec) .............................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress rat- ings 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, V = -5V, REF = 4.096V, AGND = GND = 0V, R = 10k, C = 50pF, T = T to T , unless otherwise noted. DD SS L L A MIN MAX Typical values are at T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCEANALOG SECTION Resolution N 13 Bits MAX547A 0.5 2 Relative Accuracy INL LSB MAX547B 0.5 4 Differential Nonlinearity DNL Guaranteed monotonic 1 LSB Bipolar Zero-Code Error 5 20 LSB Gain Error 1 8 LSB Gain/V (Note 1) 0.0025 DD Power-Supply Rejection Ratio PSRR %/% Gain/V (Note 1) 0.0025 SS Load Regulation R = to 10k 0.3 LSB L REFERENCE INPUT (Note 2) Reference Input Range REF (Notes 2, 3) AGND V V DD Reference Input Resistance RREF Each REF pin (Note 3) 5 k ANALOG OUTPUT Maximum Output Voltage V V - 0.5 DD Minimum Output Voltage V V + 0.5 SS DYNAMIC PERFORMANCEANALOG SECTION Voltage-Output Slew Rate 3 V/s 1 Output Settling Time To LSB of full scale (Note 4) 5 s 2 Digital Feedthrough 5 nV-s Digital Crosstalk 5 nV-s DIGITAL INPUTS (V = 5V 5%) DD Input Voltage High V 2.4 V IH Input Voltage Low V 0.8 V IL Input Current I V = 0V or V 1.0 A IN IN DD Input Capacitance C (Note 5) 10 pF IN 2 MAX547