MAX5842 19-2317 Rev 0 1/02 Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC General Description Features The MAX5842 is a quad, 12-bit voltage-output, digital- Ultra-Low Supply Current 2 to-analog converter (DAC) with an I C -compatible, 230A at V = 3.6V DD 2-wire interface that operates at clock rates up to 280A at V = 5.5V DD 400kHz. The device operates from a single 2.7V to 5.5V 300nA Low-Power Power-Down Mode supply and draws only 230A at V = 3.6V. A power- DD down mode decreases current consumption to less Single 2.7V to 5.5V Supply Voltage than 1A. The MAX5842 features three software-selec- 2 table power-down output impedances: 100k , 1k , Fast 400kHz I C-Compatible 2-Wire Serial and high impedance. Other features include internal Interface precision Rail-to-Rail output buffers and a power-on Schmitt-Trigger Inputs for Direct Interfacing to reset (POR) circuit that powers up the DAC in the Optocouplers 100k power-down mode. 2 Rail-to-Rail Output Buffer Amplifiers The MAX5842 features a double-buffered I C-compati- ble serial interface that allows multiple devices to share Three Software-Selectable Power-Down Output a single bus. All logic inputs are CMOS-logic compati- Impedances ble and buffered with Schmitt triggers, allowing direct 100k , 1k , and High Impedance interfacing to optocoupled and transformer-isolated interfaces. The MAX5842 minimizes digital noise Read-Back Mode for Bus and Data Checking feedthrough by disconnecting the clock (SCL) signal Power-On Reset to Zero from the rest of the device when an address mismatch is detected. 10-Pin MAX Package The MAX5842 is specified over the extended tempera- Ordering Information ture range of -40C to +85C and is available in a miniature 10-pin MAX package. Refer to the MAX5841 TEMP PIN- data sheet for the 10-bit version. PART ADDRESS RANGE PACKAGE Applications o o MAX5842LEUB -40 C to +85 C 10 MAX 0111 10X o o Digital Gain and Offset Adjustments MAX5842MEUB -40 C to +85 C 10 MAX 1011 10X Programmable Voltage and Current Sources Typical Operating Circuit Programmable Attenuation VCO/Varactor Diode Control V DD Low-Cost Instrumentation V DD C Battery-Powered Equipment SCL SDA R P R ATE P Pin Configuration V DD R S OUTA SCL R S OUTB TOP VIEW MAX5842 SDA OUTC REF ADD 1 10 OUTD OUTD SCL 2 9 OUTC MAX5842 R S V 3 8 OUTB DD V SCL DD R S GND 4 7 OUTA MAX5842 OUTA SDA SDA 5 6 REF OUTB REF OUTC MAX OUTD REF Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. 2 I C is a trademark of Philips 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.Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC ABSOLUTE MAXIMUM RATINGS V , SCL, SDA to GND............................................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C DD OUT , REF, ADD to GND..............................-0.3V to V + 0.3V Storage Temperature Range .............................-65C to +150C DD Maximum Current into Any Pin............................................50mA Maximum Junction Temperature .....................................+150C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) .................................+300C A 10-Pin MAX (derate 5.6mW above +70C) .................444mW 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 CHARACTERISTICS (V = +2.7V to +5.5V, GND = 0, V = V , R = 5k , C = 200pF, T = T to T , unless otherwise noted. Typical values are DD REF DD L L A MIN MAX at V = +5V, T = +25C.) (Note 1) DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC ACCURACY (NOTE 2) Resolution N 12 Bits Integral Nonlinearity INL (Note 3) 2 16 LSB Differential Nonlinearity DNL Guaranteed monotonic (Note 3) 1 LSB Zero-Code Error ZCE Code = 000 hex, V = 2.7V 6 40 mV DD o Zero-Code Error Tempco 2.3 ppm/ C Gain Error GE Code = FFF hex -0.8 -3 %FSR o Gain-Error Tempco 0.26 ppm/ C Power-Supply Rejection Ratio PSRR Code = FFF hex, V = 4.5V to 5.5V 58.8 dB DD DC Crosstalk 30 V REFERENCE INPUT Reference Input Voltage Range V 0V V REF DD Reference Input Impedance 32 45 k Reference Current Power-down mode 0.3 1 A DAC OUTPUT Output Voltage Range No load (Note 4) 0 V V DD DC Output Impedance Code = 800 hex 1.2 V = 5V, V = full scale (short to GND) 42.2 DD OUT Short-Circuit Current mA V = 3V, V = full scale (short to GND) 15.1 DD OUT V = 5V 8 DD Wake-Up Time s V = 3V 8 DD Power-down mode = high impedance, DAC Output Leakage Current 0.1 1 A V = 5.5V, V = V or GND DD OUT DD DIGITAL INPUTS (SCL, SDA) 0.7 Input High Voltage V V IH V DD 0.3 Input Low Voltage V V IL V DD 2 MAX5842