MAX5171/MAX5173 19-1476 Rev 0 4/99 Low-Power, Serial, 14-Bit DACs with Force/Sense Voltage Output General Description Features The MAX5171/MAX5173 low-power, serial, voltage-output, 1 LSB INL 14-bit digital-to-analog converters (DACs) feature a preci- 1A Shutdown Current sion output amplifier in a space-saving 16-pin QSOP Glitch Free Output Voltage at Power-Up package. The MAX5171 operates from a +5V single sup- ply, and the MAX5173 operates from a +3V single supply. Single-Supply Operation: +5V (MAX5171) The output amplifiers inverting input is available to allow +3V (MAX5173) specific gain configurations, remote sensing, and high Full-Scale Output Range: output current capability. This makes the MAX5171/ +2.048V (MAX5173, V = +1.25V) REF MAX5173 ideal for a wide range of applications, including +4.096V (MAX5171, V = +2.5V ) REF industrial process control. Both devices draw only 260A of supply current, which reduces to 1A in shutdown Rail-to-Rail Output Amplifier mode. In addition, the programmable power-up reset fea- Low THD (-80dB) in Multiplying Operation ture allows for a user-selectable output voltage of either 0 or midscale. SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial Interface The 3-wire serial interface is compatible with SPI, QSPI, and MICROWIRE standards. An input register Programmable Shutdown Mode and Power-Up followed by a DAC register provides a double-buffered Reset input, allowing the input and DAC registers to be updated Buffered Output Capable of Driving 5k 100pF independently or simultaneously with a 16-bit serial word. Loads Additional features include software and hardware shut- User-Programmable Digital Output Pin Allows down, shutdown lockout, a hardware clear pin, and a ref- erence input capable of accepting DC and offset AC Serial Control of External Components signals. These devices provide a programmable digital Pin-Compatible Upgrade to the 12-Bit output pin for added functionality and a serial-data output MAX5175/MAX5177 pin for daisy-chaining. All logic inputs are TTL/CMOS- compatible and are internally buffered with Schmitt trig- gers to allow direct interfacing to optocouplers. Ordering Information The MAX5171/MAX5173 incorporate a proprietary on-chip INL circuit that keeps the output voltage virtually glitch free, PART TEMP. RANGE PIN-PACKAGE (LSB) limiting the glitches to a few millivolts during power-up. MAX5171AEEE -40C to +85C 16 QSOP 1 Both devices are available in 16-pin QSOP packages and MAX5171BEEE -40C to +85C 16 QSOP 2 are specified for the extended (-40C to +85C) tempera- MAX5173AEEE -40C to +85C 16 QSOP 2 ture range. The MAX5171/MAX5173 are pin-compatible MAX5173BEEE -40C to +85C 16 QSOP 4 upgrades to the 12-bit MAX5175/MAX5177. For 100% pin- compatible DACs with an internal reference, see the 13-bit MAX5132/MAX5133 and the 12-bit MAX5122/MAX5123 Pin Configuration data sheets. TOP VIEW Applications FB 1 16 V DD Digitally Programmable 420mA Current Loops OUT 2 15 N.C. Industrial Process Control RS 3 14 REF Digital Offset and Gain Adjustment PDL 4 MAX5171 13 AGND MAX5173 Motion Control CLR 5 12 SHDN Automatic Test Equipment (ATE) CS 6 11 UPO Remote Industrial Controls DIN 7 10 DOUT P-Controlled Systems SCLK 8 9 DGND SPI and QSPI are trademarks of Motorola, Inc. QSOP MICROWIRE is a trademark of National Semiconductor Corp. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Functional Diagram appears at end of data sheet. Maxim Integrated Products 1 For free samples & the latest literature: Low-Power, Serial, 14-Bit DACs with Force/Sense Voltage Output ABSOLUTE MAXIMUM RATINGS V to AGND, DGND............................................-0.3V to +6.0V Continuous Power Dissipation (T = +70C) DD A AGND to DGND.....................................................-0.3V to +0.3V 16-pin QSOP (derate 8mW/C above +70C)..............667mW Digital Inputs to DGND..........................................-0.3V to +6.0V Operating Temperature Range ...........................-40C to +85C DOUT, UPO to DGND ................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C DD FB, OUT, REF to AGND .............................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10sec) .............................+300C DD Maximum Current into Any Pin............................................50mA 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 CHARACTERISTICSMAX5171 (V = +5.0V 10%, V = +2.5V, AGND = DGND, FB = OUT, R = 5k, C = 100pF referenced to ground, T = T to T DD REF L L A MIN MAX, unless otherwise noted. Typical values are at T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCE Resolution 14 Bits MAX5171A 1 Integral Nonlinearity (Note 1) INL LSB MAX5171B 2 Differential Nonlinearity DNL 1 LSB Offset Error (Note 2) V 10 mV OS R = -0.6 4 L Gain Error GE LSB R = 5k -1.6 8 L Power-Supply Rejection Ratio PSRR 10 120 V/V Output Noise Voltage f = 100kHz 1 LSBp-p Output Thermal Noise Density 50 nV/Hz REFERENCE Reference Input Range V 0V - 1.4 V REF DD Reference Input Resistance R 18 k REF MULTIPLYING-MODE PERFORMANCE Reference -3dB Bandwidth V = 0.5Vp-p + 2.5V , slew-rate limited 350 kHz REF DC V = 3.6Vp-p + 1.8V , f = 1kHz, REF DC Reference Feedthrough -84 dB code = all 0s Signal-to-Noise Plus Distortion V = 1.4Vp-p + 2.5V , f = 10kHz, REF DC SINAD 84 dB Ratio code = 3FFF hex DIGITAL INPUTS Input High Voltage V 3 V IH Input Low Voltage V 0.8 V IL Input Hysteresis V 200 mV HYS Input Leakage Current I V = 0 or V 0.001 1 A IN IN DD Input Capacitance C 8 pF IN DIGITAL OUTPUTS Output High Voltage V I = 2mA V - 0.5 V OH SOURCE DD Output Low Voltage V I = 2mA 0.13 0.4 V OL SINK 2 MAX5171/MAX5173