MAX6161MAX6168 Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References General Description Benefits and Features The MAX6161MAX6168 are precision, low-dropout, 2mV (max) Initial Accuracy micropower voltage references. These three-terminal 5ppm/C (max) Temperature Coefficient devices operate with an input voltage range from (V OUT 5mA Source Current at 0.9mV/mA + 200mV) to 12.6V and are available with output voltage options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, 2mA Sink Current at 2.5mV/mA and 5V. They feature a proprietary curvature-correction Stable with 1F Capacitive Loads circuit and laser-trimmed thin-film resistors that result in a No External Capacitor Required very low temperature coefficient of 5ppm/C (max) and an 100A (typ) Quiescent Supply Current initial accuracy of 2mV (max). Specifications apply to the extended temperature range (-40C to +85C). 200mV (max) Dropout at 1mA Load Current The MAX6161MAX6168 typically draw only 100A of Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V, supply current and can source 5mA (4mA for MAX6161) 3V, 4.096V, 4.5V, 5V or sink 2mA of load current. Unlike conventional shunt- mode (two-terminal) references that waste supply Applications current and require an external resistor, these devices Analog-to-Digital Converters (ADCs) offer a supply current that is virtually independent Portable Battery-Powered Systems of the supply voltage (8A/V variation) and do not Notebook Computers require an external resistor. Additionally, the internally PDAs, GPS, DMMs compensated devices do not require an external compensation Cellular Phones capacitor. Eliminating the external compensation capacitor Precision +3V/+5V Systems saves valuable board area in space-critical applications. A low-dropout voltage and a supply-independent, ultra-low Ordering Information, Typical Operating Circuit, and supply current make these devices ideal for battery- Selector Guide appear at end of data sheet. operated, high-performance, low-voltage systems. The MAX6161MAX6168 are available in 8-pin SO packages. Pin Configuration TOP VIEW + N.C. 1 8 N.C. IN 2 7 N.C. MAX6161 MAX6168 N.C. 3 6 OUT GND 4 5 N.C. SO 19-1650 Rev 4 12/08MAX6161MAX6168 Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References Absolute Maximum Ratings Voltages Referenced to GND Continuous Power Dissipation (T = +70C) A IN .......................................................................... -0.3 to +13.5V 8-Pin SO (derate 5.88mW/C above +70C)...............471mW OUT ............................................................-0.3V to (V + 0.3V) Operating Temperature Range ...........................-40C to +85C IN Output Short-Circuit Duration to GND or IN (V 6V) ....Continuous Storage Temperature Range.-65C to +150C IN Output Short-Circuit Duration to GND or IN (V > 6V) ........ 60s Lead Temperature (soldering, 10s) .................................+300C IN 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 CharacteristicsMAX6161 (V = 1.25V) OUT (V = +5V, I = 0, T = T to T , unless otherwise specified. Typical values are at T = +25C.) (Note 1) IN OUT A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX6161A 1.248 1.250 1.252 Output Voltage V T = +25C V OUT A MAX6161B 1.246 1.250 1.254 MAX6161A 4 10 Output Voltage Temperature TCV ppm/C OUT Coefficient (Note 2) MAX6161B 6 15 V / OUT Line Regulation 2.5V V 12.6V 12 150 V/V IN V IN Sourcing: 0 I 4mA 0.5 0.9 V / OUT OUT Load Regulation mV/mA I OUT Sinking: -2mA I 0 1.3 2.5 OUT Short to GND 110 OUT Short-Circuit Current I mA SC Short to IN 25 V / ppm/ OUT Long-Term Stability 1000hr at +25C 115 time 1000hr Output Voltage Hysteresis V / OUT 125 ppm (Note 3) cycle DYNAMIC CHARACTERISTICS f = 0.1Hz to 10Hz 20 Vp-p Noise Voltage e OUT f = 10Hz to 10kHz 15 V RMS Ripple Rejection V /V V = +5V 100mV, f = 120Hz 80 dB OUT IN IN Turn-On Settling Time t V to 0.1% of final value, C = 50pF 50 s R OUT OUT INPUT CHARACTERISTICS Supply Voltage Range V Guaranteed by line-regulation test 2.5 12.6 V IN Quiescent Supply Current I 125 150 A IN Change in Supply Current I /V 2.5V V 12.6V 3.2 8.0 A/V IN IN IN Maxim Integrated 2 www.maximintegrated.com