MAX6225/MAX6241/MAX6250 19-1139 Rev 4 1/01 Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage References General Description Features The MAX6225/MAX6241/MAX6250 are low-noise, preci- Low 1.0ppm/C Temperature Coefficient sion voltage references with extremely low 1ppm/C Very Low 1.5Vp-p Noise (0.1Hz to 10Hz) temperature coefficients and excellent 0.02% initial accuracy. These devices feature buried-zener technolo- 0.02% Initial Accuracy gy for lowest noise performance. Load-regulation speci- 15mA Output Source and Sink Current fications are guaranteed for source and sink currents up to 15mA. Excellent line and load regulation and low Low, 18mW Power Consumption (MAX6225) output impedance at high frequency make them ideal Industry-Standard Pinout for high-resolution data-conversion systems up to 16 bits. Optional Noise Reduction and Voltage Trim The MAX6225 is set for 2.500V output, the MAX6241 is Excellent Transient Response set for 4.096V output, and the MAX6250 is set for 8-Pin SO Package Available 5.000V output. All three provide for the option of exter- nal trimming and noise reduction. Low 20ppm/1000hr Long-Term Stability Stable for All Capacitive Loads Applications Ordering Information High-Resolution Analog-to-Digital MAX PIN- and Digital-to-Analog Converters PART TEMP. RANGE TEMPCO PACKAGE (ppm/C) High-Accuracy Reference Standard MAX6225ACPA 0C to +70C 8 Plastic DIP 2.0 High-Accuracy Industrial and Process Control MAX6225BCPA 0C to +70C 8 Plastic DIP 5.0 MAX6225ACSA 0C to +70C 8 SO 2.0 Digital Voltmeters MAX6225BCSA 0C to +70C 8 SO 5.0 ATE Equipment MAX6225AEPA -40C to +85C 8 Plastic DIP 3.0 MAX6225BEPA -40C to +85C 8 Plastic DIP 7.0 Precision Current Sources MAX6225AESA -40C to +85C 8 SO 3.0 MAX6225BESA -40C to +85C 8 SO 7.0 MAX6225AMJA -55C to +125C 8 CERDIP 5.0 MAX6225BMJA -55C to +125C 8 CERDIP 8.0 Ordering Information continued at end of data sheet. Typical Operating Circuit Pin Configuration TOP VIEW 8V TO 36V INPUT 1 8 I.C. IN I.C. REFERENCE OUT OUT 2 7 I.C. IN MAX6225 MAX6225 MAX6241 OUT * MAX6241 NR 3 6 2.2 F MAX6250 NR MAX6250 TRIM 4 GND 5 TRIM * 2.2 F GND DIP/SO I.C. = INTERNALLY CONNECTED DO NOT USE *OPTIONAL 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.Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage References ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) IN..............................................................................-0.3V to +40V Operating Temperature Ranges OUT, TRIM ...............................................................-0.3V to +12V MAX62 C A.....................................................0C to +70C NR ..............................................................................-0.3V to +6V MAX62 E A ..................................................-40C to +85C OUT Short-Circuit to GND Duration (V 12V)..........Continuous IN MAX62 MJA ................................................-55C to +125C OUT Short-Circuit to GND Duration (V 40V) ........................5s IN Storage Temperature Range ..............................-65C to +150C OUT Short-Circuit to IN Duration (V 12V) ..............Continuous IN Lead Temperature (soldering, 10s)...................................+300C Continuous Power Dissipation (T = +70C) A 8-Pin Plastic DIP (derate 9.09mW/C above +70C) ......727mW 8-Pin SO (derate 5.88mW/C above +70C)...................471mW 8-Pin CERDIP (derate 8.00mW/C above +70C)...........640mW 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 CHARACTERISTICSMAX6225 (V = +10V, I = 0mA, T = T to T , unless otherwise noted. Typical values are at T = +25C.) IN OUT A MIN MAX A PARAMETER SYMBOL CONDITIONS T MIN TYP MAX UNITS A Input Voltage Range V C, E, M836 V IN MAX6225A +25C 2.499 2.500 2.501 Output Voltage V V OUT MAX6225B +25C 2.497 2.500 2.503 MAX6225AC A C 1.0 2.0 MAX6225AE A E 1.5 3.0 MAX6225AMJA M 2.0 5.0 Output Voltage Temperature TCV ppm/C OUT Coefficient (Note 1) MAX6225BC A C 2.5 5.0 MAX6225BE A E 2.5 7.0 MAX6225BMJA M 2.5 8.0 +25C 10 18 C 30 8V V 10V IN E 35 M 45 V / OUT Line Regulation (Note 2) ppm/V V IN +25C 25 C 7 10V V 36V IN E 8 M 10 2 MAX6225/MAX6241/MAX6250