MAX5122/MAX5123 19-1446 Rev 2 5/06 +5V/+3V, 12-Bit, Serial, Force/Sense DACs with 10ppm/C Internal Reference General Description Features The MAX5122/MAX5123 low-power, 12-bit, voltage-out- Single-Supply Operation put, digital-to-analog converters (DACs) feature an inter- +5V (MAX5122) nal precision bandgap reference and output amplifier. +3V (MAX5123) The MAX5122 operates on a single +5V supply with an Built-In 10ppm/C max Precision Bandgap Reference internal +2.5V reference, and offers a configurable output amplifier. If necessary, the user can override the on-chip, +2.5V (MAX5122) <10ppm/C voltage reference with an external reference. +1.25V (MAX5123) The MAX5123 has the same features as the MAX5122 but SPI/QSPI/MICROWIRE-Compatible, 3-Wire Serial operates from a single +3V supply and has an internal +1.25V precision reference. The user-accessible inverting Interface input and output of the amplifier allows specific gain con- Pin-Programmable Shutdown Mode and Power- figurations, remote sensing, and high output drive capa- Up Reset (0 or Midscale Output Voltage) bility for a wide range of force/sense applications. Both devices draw only 500A of supply current, which Buffered Output Capable of Driving 5k 100pF reduces to 3A in power-down mode. In addition, their or 420mA Loads power-up reset feature allows for a user-selectable initial output state of either 0V or midscale and reduces output Space-Saving 16-Pin QSOP Package glitches during power-up. Pin-Compatible 13-Bit Upgrades Available The serial interface is compatible with SPI, QSPI, and (MAX5132/MAX5133) MICROWIRE, which makes the MAX5122/MAX5123 suitable for cascading multiple devices. Each DAC has Pin-Compatible 14-Bit Upgrades Available a double-buffered input organized as an input register (MAX5171/MAX5173) followed by a DAC register. A 16-bit shift register loads data into the input register. The DAC register may be Ordering Information updated independently or simultaneously with the input register. PIN- INL PKG PART Both devices are available in a 16-pin QSOP package PACKAGE (LSB) CODE and are specified for the extended-industrial (-40C to MAX5122AEEE 16 QSOP 0.5 E16-5 +85C) operating temperature range. For pin-compatible MAX5122BEEE 16 QSOP 1 E16-5 14-bit upgrades, see the MAX5171/MAX5173 data sheet MAX5123AEEE 16 QSOP 1 E16-5 for the pin-compatible 13-bit version, see the MAX5132/ MAX5133 data sheet. MAX5123BEEE 16 QSOP 2 E16-5 Note: All devices are specified over the -40C to +85C oper- ating temperature range. Applications Pin Configuration Industrial Process Control Automatic Test Equipment TOP VIEW FB 1 16 V DD Digital Offset and Gain Adjustment OUT 2 15 REFADJ Motion Control RSTVAL 3 14 REF Microprocessor-Controlled Systems PDL 4 MAX5122 13 AGND MAX5123 CLR 5 12 PD CS 6 11 UPO DIN 7 10 DOUT SCLK 8 9 DGND SPI and QSPI are trademarks of Motorola, Inc. QSOP MICROWIRE is a trademark of National Semiconductor Corp. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.+5V/+3V, 12-Bit, Serial, Force/Sense DACs with 10ppm/C Internal Reference ABSOLUTE MAXIMUM RATINGS V to AGND, DGND...............................................-0.3V to +6V Continuous Power Dissipation (T = +70C) DD A AGND to DGND.....................................................-0.3V to +0.3V QSOP (derate 8.00mW/C above +70C).....................667mW Digital Inputs to DGND.............................................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C Digital Outputs (DOUT, UPO) to DGND.....-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C DD FB, OUT to AGND ......................................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C DD REF, REFADJ to AGND ..............................-0.3V to (V + 0.3V) 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 CHARACTERISTICSMAX5122 (+5V) (V = +5V 10%, AGND = DGND, 33nF capacitor at REFADJ, internal reference, R = 5k , C = 100pF, output amplifier configured DD L L in unity-gain, T = T to T , unless otherwise noted. Typical values are at T = +25C.) A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCE Resolution N 12 Bits MAX5122A -0.5 0.5 Integral Nonlinearity (Note 1) INL LSB MAX5123B -1 1 Differential Nonlinearity DNL -1 1 LSB Offset Error (Note 2) V -10 10 mV OS Gain Error GE -3 -0.2 3 mV MAX5122A 310 Full-Scale Temperature TCV ppm/C FS Coefficient (Note 3) MAX5123B 10 30 Power-Supply Rejection Ratio PSRR 4.5V V 5.5V 20 250 V/V DD REFERENCE Output Voltage V T = +25C 2.475 2.5 2.525 V REF A MAX5122A 3 Output Voltage Temperature TCV ppm/C REF Coefficient MAX5122B 10 Reference External Load Regulation V /I 0 I 100A (sourcing) 0.1 1 V/A OUT OUT OUT Reference Short-Circuit Current 4 mA REFADJ Current REFADJ = V 3.3 7 A DD DIGITAL INPUT 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 -1 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 MAX5122/MAX5123