LT6658 Precision Dual Output, High Current, Low Noise, Voltage Reference FEATURES DESCRIPTION n Dual Output Tracking Reference The LT 6658 is a family of precision dual output references n Each Output Configurable to 6V combining the performance of a precision voltage refer- n Output 1: 150mA Source/20mA Sink ence and a linear regulator that we call the Refulator. n Output 2: 50mA Source/20mA Sink Both outputs are ideal for driving the reference inputs of n Low Drift: high resolution ADCs and DACs, even with heavy load- n A-Grade: 10ppm/C Max ing, while simultaneously powering microcontrollers and n B-Grade: 20ppm/C Max other circuitry. Both outputs have the same precision n High Accuracy: specifications and track each other over temperature and n A-Grade: 0.05% Max load. Each output can be configured with external resis- n B-Grade: 0.1% Max tors to give an output voltage up to 6V. n Low Noise: 1.5ppm (0.1Hz to 10Hz) P-P Using Kelvin connections, the LT6658 typically has n Wide Operating Voltage Range to 36V 0.1ppm/mA load regulation with up to 150mA load cur- n Load Regulation: 0.25V/mA rent. A noise reduction pin is available to band-limit and n AC PSRR: 96dB at 10kHz lower the total integrated noise. n Kelvin Sense Connection on Outputs Separate supply pins are provided for each output, provid- n Thermal Shutdown ing an option to reduce power consumption and isolate n Separate Supply Pins for Each Output the buffer amplifiers. The outputs have excellent supply n Available Output Voltage Options: 1.2V, 1.8V, 2.5V, 3V, rejection and are stable with 1F to 50F capacitors. 3.3V, 5V. All Options are Adjustable n Available in Exposed Pad Package MSE16 and The LT6658 is available in a 16-lead MSOP and DFN with 4mm3mm DFN an exposed pad for thermal management. Short circuit and thermal protection help to prevent thermal overstress. APPLICATIONS All registered trademarks and trademarks are the property of their respective owners. n Microcontroller or FPGA with ADC/DAC Applications n Data Acquisition Systems n Automotive Control and Monitoring n Precision Low Noise Regulators n Instrumentation and Process Control TYPICAL APPLICATION Output Voltage Temperature Drift Both Outputs 2.502 Precision Dual Output 2.5V Reference and Supply V OUT2 2.501 V V 2.5V IN1 OUT2 F 50mA V V IN2 OUT2 S 1F V IN R 2.500 V LOAD2 IN 5V TO 36V LT6658-2.5 OD V OUT1 0.1F 2.499 V 2.5V OUT1 F I = 150mA LOAD1 150mA V BYPASS V OUT1 OUT1 S 1F V OUT2 1F GND R LOAD1 2.498 50 25 0 25 50 75 100 125 150 6658 TA01a TEMPERATURE (C) 6658 TA01b Rev. C 1 Document Feedback For more information www.analog.com OUTPUT VOLTAGE (V)LT6658 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltages Output Short-Circuit Duration .......................... Indefinite V , V , V to GND ............................ 0.3V to 38V Specified Temperature Range IN IN1 IN2 Input Voltages I-Grade.................................................40C to 85C OD to GND ............................................. 0.3V to 38V H-Grade ............................................. 40C to 125C V , V , NR, BYPASS to GND .. 0.3V to 6V Operating Junction Temperature Range . 55C to 150C OUT1 S OUT2 S Output Voltages Storage Temperature Range (Note 2) ..... 65C to 150C V , V to GND ......................... 0.3V to 6V Lead Temperature (Soldering, 10 sec) OUT1 F OUT2 F Input Current (Note 3) ............................................................300C BYPASS ........................................................... 10mA PIN CONFIGURATION TOP VIEW TOP VIEW GND 1 16 DNC GND 2 15 NC GND 1 16 DNC GND 2 15 NC BYPASS 3 14 V IN BYPASS 3 14 V IN DNC 4 13 V 17 DNC 4 17 13 V OUT1 S OUT1 S GND NR 5 GND 12 V OUT1 F NR 5 12 V OUT1 F GND 6 11 V IN1 GND 6 11 V IN1 V 7 10 V OUT2 S IN2 V 8 9 OD V 7 10 V OUT2 F OUT2 S IN2 V 8 9 OD MSE PACKAGE OUT2 F 16-LEAD PLASTIC MSOP DE PACKAGE T = 150C, = 10C/W, = 35C/W JMAX JC JA 16-LEAD (4mm 3mm) PLASTIC DFN DNC: CONNECTED INTERNALLY T = 150C, = 5C/W, = 43C/W DO NOT CONNECT EXTERNAL CIRCUITRY TO THESE PINS JMAX JC JA DNC: CONNECTED INTERNALLY EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB DO NOT CONNECT EXTERNAL CIRCUITRY TO THESE PINS EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB Rev. C 2 For more information www.analog.com