MAX5154/MAX5155 19-1316 Rev 1 12/97 Low-Power, Dual, 12-Bit Voltage-Output DACs with Serial Interface General Description Features 12-Bit Dual DAC with Internal Gain of +2V/V The MAX5154/MAX5155 low-power, serial, voltage-out- put, dual 12-bit digital-to-analog converters (DACs) Rail-to-Rail Output Swing consume only 500A from a single +5V (MAX5154) or 12s Settling Time +3V (MAX5155) supply. These devices feature Rail-to- Single-Supply Operation: +5V (MAX5154) Rail output swing and are available in a space-saving +3V (MAX5155) 16-pin QSOP package. To maximize the dynamic range, the DAC output amplifiers are configured with an Low Quiescent Current: 500A (normal operation) internal gain of +2V/V. 2A (shutdown mode) SPI/QSPI and Microwire Compatible The 3-wire serial interface is SPI/QSPI and Microwire compatible. Each DAC has a double- Available in Space-Saving 16-Pin QSOP Package buffered input organized as an input register followed Power-On Reset Clears Registers and DACs by a DAC register, which allows the input and DAC reg- to Zero isters to be updated independently or simultaneously Adjustable Output Offset with a 16-bit serial word. Additional features include programmable shutdown (2A), hardware-shutdown lockout (PDL), a separate reference voltage input for Ordering Information each DAC that accepts AC and DC signals, and an active-low clear input (CL) that resets all registers and INL PART TEMP. RANGE PIN-PACKAGE (LSB) DACs to zero. These devices provide a programmable logic pin for added functionality, and a serial-data out- MAX5154ACPE 0C to +70C 16 Plastic DIP 1/2 put pin for daisy chaining. MAX5154BCPE 0C to +70C 16 Plastic DIP 1 MAX5154ACEE 0C to +70C 16 QSOP 1/2 Applications MAX5154BCEE 0C to +70C 16 QSOP 1 Industrial Process Control Remote Industrial Controls Ordering Information continued at end of data sheet. Digital Offset and Gain Microprocessor- Pin Configuration appears at end of data sheet. Adjustment Controlled Systems Motion Control Automatic Test Equipment (ATE) Functional Diagram V DOUT CL PDL DGND DD AGND REFA OSA DECODE R CONTROL R OUTA INPUT DAC DAC A OSB REG A REG A 16-BIT R SHIFT REGISTER MAX5154 R MAX5155 SR OUTB CONTROL DAC INPUT DAC B LOGIC REG B REG B OUTPUT CS DIN SCLK UPO REFB Rail-to-Rail is a registered trademark of Nippon Motorola Ltd. 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: Low-Power, Dual, 12-Bit Voltage-Output DACs with Serial Interface ABSOLUTE MAXIMUM RATINGS V to AGND............................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) DD A V to DGND ...........................................................-0.3V to +6V Plastic DIP (derate 10.5mW/C above +70C) ...........842mW DD AGND to DGND..................................................................0.3V QSOP (derate 8.30mW/C above +70C)...................667mW OSA, OSB to AGND........................(AGND - 4V) to (V + 0.3V) CERDIP (derate 10.00mW/C above +70C)..............800mW DD REF , OUT to AGND.................................-0.3V to (V + 0.3V) Operating Temperature Ranges DD Digital Inputs (SCLK, DIN, CS, CL, PDL) MAX515 C E .................................................0C to +70C to DGND............................................................(-0.3V to +6V) MAX515 E E ..............................................-40C to +85C Digital Outputs (DOUT, UPO) MAX515 MJE.............................................-55C to +125C to DGND................................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C DD Maximum Current into Any Pin .........................................20mA Lead Temperature (soldering, 10sec) .............................+300C 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 CHARACTERISTICSMAX5154 (V = +5V 10%, V = V = 2.048V, R = 10k, C = 100pF, T = T to T , unless otherwise noted. Typical values are DD REFA REFB L L A MIN MAX at T = +25C (OS tied to AGND for a gain of +2V/V).) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCE Resolution 12 Bits MAX5154A 1/2 Integral Nonlinearity INL (Note 1) LSB MAX5154B 1 Differential Nonlinearity DNL Guaranteed monotonic 1 LSB Offset Error V Code = 6 6 mV os Offset Tempco TCV Normalized to 2.048V 4 ppm/C os Gain Error -0.2 3 LSB Gain-Error Tempco Normalized to 2.048V 4 ppm/C V Power-Supply DD PSRR 4.5V V 5.5V 20 260 V/V DD Rejection Ratio REFERENCE INPUT Reference Input Range REF 0 V - 1.4 V DD Reference Input Resistance R Minimum with code 1554 hex 14 20 k REF MULTIPLYING-MODE PERFORMANCE Input code = 1FFE hex, Reference 3dB Bandwidth 300 kHz V = 0.67Vp-p at 2.5V REF DC Input code = 0000 hex, Reference Feedthrough -82 dB V = (V - 1.4Vp-p) at 1kHz REF DD Signal-to-Noise plus Input code = 1FFE hex, SINAD 75 dB Distortion Ratio V = 1Vp-p at 1.25V , f = 25kHz REF DC DIGITAL INPUTS Input High Voltage V CL, PDL, CS, DIN, SCLK 3 V IH Input Low Voltage V 0.8 V CL, PDL, CS, DIN, SCLK IL Input Hysteresis V 200 mV HYS Input Leakage Current I V = 0V to V 0.001 1 A IN IN DD Input Capacitance C 8 pF IN 2 MAX5154/MAX5155