Click here for production status of specific part numbers. MAX6226 Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference General Description Benefits and Features The MAX6226 is an ultra-low-noise, high-precision, low- 8-pin Hermetically Sealed Ceramic Package dropout voltage reference. This family of voltage references Reduces System Board Space feature curvature-correction circuitry and high-stability, Ultra-Low 1.45V Noise (0.1Hz to 10Hz, 2.5V Output) P-P laser-trimmed, thin-film resistors that result in 3ppm/C Ultra-Low 3ppm/C (Max) Temperature Coefficient (max) temperature coefficients and an excellent 0.02% 0.02% (Max) Initial Accuracy (max) initial accuracy. The proprietary low-noise reference architecture produces a low flicker noise of 1.45V and Wide (V + 200mV) to 12.6V Supply Voltage Range P-P OUT wideband noise as low as 75nV/Hz (2.5V output) without Low 200mV (Max) Dropout Voltage the increased supply current usually found in low-noise 380A Quiescent Supply Current references. Improve wideband noise to 45nV/Hz and AC 10mA Sink/Source-Current Capability power-supply rejection by adding a 0.1F capacitor at the noise reduction pin. The MAX6226 series mode reference Stable with C = 0.1F to 10F LOAD operates from a wide 2.7V to 12.6V supply voltage range Low 11ppm/1000hr Long-Term Drift and load-regulation specifications are guaranteed to be 0.05 (Max) Load Regulation less than 0.25 and 0.05 for sink and source currents up 25V/V (Max) Line Regulation to 10mA, respectively. These devices are available over the automotive temperature range of -40C to +125C. Force and Sense Outputs for Remote Sensing The MAX6226 typically draws 380A of supply current and Applications the output voltages are 2.5V and 5.0V. The MAX6226 also High-Resolution A/D and D/A Converters feature dropout voltages as low as 200mV. Unlike conventional ATE Equipment shunt-mode (two-terminal) references that waste supply High-Accuracy Reference Standard current and require an external resistor, the MAX6226 Precision Current Sources offers supply current that is virtually independent of supply voltage and does not require an external resistor. The Digital Voltmeters MAX6226 is stable with 0.1F to 10F of load capacitance, High-Accuracy Industrial and Process Control and is available in an 8-pin ceramic package. Ordering Information appears at end of data sheet. Typical Operating Circuit (V + 200mV) TO 12.6V INPUT OUT LONG-TERM STABILITY vs. TIME (MAX6226ALA25+) toc16 20 IN REFERENCE OUTF OUTPUT THREE TYPICAL UNITS 15 OUTS MAX6226 10 * NR LOAD 5 * 0 GND -5 0 200 400 600 800 1000 *OPTIONAL. DURATION (HOURS) 19-100454 Rev 6 11/20 OUTPUT VOLTAGE CHANGE (ppm)MAX6226 Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference Absolute Maximum Ratings (All voltages referenced to GND) Operating Temperature Range ......................... -40C to +125C IN ...........................................................................-0.3V to +13V Junction Temperature ......................................................+150C OUTF, OUTS, NR ..... -0.3V to the lesser of (V + 0.3V) or +6V Storage Temperature Range ............................ -65C to +150C IN Output Short Circuit to GND or IN......................................... 60s Lead Temperature (soldering, 10s) .................................+300C Continuous Power Dissipation (T = +70C) Soldering Temperature (reflow) .......................................+260C A 8-Pin LCC (derate 17.79mW/C above +70C) ......1423.5mW 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. Package Information LCC PACKAGE CODE L8+2 Outline Number 21-100289 Land Pattern Number 90-100097 Thermal Resistance, Four-Layer Board: Junction to Ambient ( ) 56.19C/W JA Junction to Case ( ) 8.11C/W JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Maxim Integrated 2 www.maximintegrated.com