LT1635 Micropower Rail-to-Rail Op Amp and Reference FEATURES DESCRIPTIO n Guaranteed Operation at 1.2V The LT 1635 is a new analog building block that includes a n Op Amp and Reference on Single Chip rail-to-rail output op amp, a precision reference and reference n Micropower: 130m A Supply Current buffer. The device operates from supplies as low as a single n Industrial Temperature Range SO-8 Packages 1.2V or up to 5V, yet it consumes only 130m A of supply n Rail-to-Rail Output current. n High Output Current: 20mA Min The input common mode range of the op amp includes n Output Drives 1000pF ground and incorporates phase reversal protection to pre- n Capable of Floating Mode Operation vent false outputs from occurring when the input is below n Specified for 5V and 5V Supplies the negative supply. The rail-to-rail output stage can swing to n Low Reference Drift: 30ppm/ C within 15mV of each rail with no load and can swing to within n Industry Standard LM10 Pinout 250mV of each rail while delivering 10mA of output current. The gain bandwidth of the op amp is 175kHz and it is unity- U gain stable with up to 1000pF load capacitance. APPLICATIO S The 0.2V reference is referred to V and includes a buffer n Battery- or Solar-Powered Systems amplifier to enhance flexibility. The reference and buffer Portable Instrumentation combine to achieve a drift of 30ppm/ C, a line regulation of Sensor Conditioning 20ppm/V and a load regulation of 150ppm/mA. n Precision Current Regulators n Precision Voltage Regulators The LT1635 is available in 8-pin PDIP and SO packages, and n Battery Level Indicator has the industry standard LM10 pinout. n Thermocouple Transmitter , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO 0V to 5V Regulator Typical Distribution of Input Offset Voltage C1 25 0.01F V = 5V, 0V S T = 25C A 20 V > 5.2V IN R1 100k 15 7 2 10 6 V OUT LT1635 0V TO 5V 4 3 + 5 8 R2 1 3.9k 0 R3 V OUT 1.0 0.6 0.2 0.2 0.6 1.0 5k ADJ INPUT OFFSET VOLTAGE (mV) 1635 TA01 1635 TA02 1 PERCENT OF UNITS U ULT1635 UUW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) + Total Supply Voltage (V to V ) .............................. 14V ORDER PART TOP VIEW NUMBER Input Differential Voltage ......................................... 14V REFOUT 1 8 REF FB Input Current ...................................................... 25mA LT1635CN8 + + OP AMP IN () 2 7 V Output Short-Circuit Duration .......................Continuous LT1635CS8 OP AMP IN (+) 3 6 OP AMP OUT Operating Temperature Range + LT1635IN8 V 4 5 BALANCE (Note 2) .............................................. 40 C to 85 C LT1635IS8 Junction Temperature........................................... 150 C N8 PACKAGE S8 PACKAGE S8 PART Storage Temperature Range ................. 65 C to 150 C 8-LEAD PDIP 8-LEAD PLASTIC SO MARKING T = 150 C, q = 130 C/ W (N8) Lead Temperature (Soldering, 10 sec).................. 300 C JMAX JA T = 150 C, q = 190 C/ W (S8) JMAX JA 1635 1635I Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS 5V OP AMP: The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25 C. V = 5V, 0V V = V = 2.5V, unless otherwise noted. (Note 2) A S CM OUT SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Input Offset Voltage 0.3 1.3 mV OS 0 C T 70 C l 0.5 1.6 mV A 40 C T 85 C l 1.8 mV A Input Offset Voltage Drift 40 C T 85 C (Note 4) l 3.0 7.0 m V/ C A V ADJ Offset Voltage Adjust Range Positive Adjust l 6 8 mV OS Negative Adjust l 1.4 2 mV I Input Offset Current l 0.2 0.6 nA OS I Input Bias Current 2.0 4.5 nA B l 2.5 5.5 nA Input Noise Voltage 0.1Hz to 10Hz 1 m V P-P e Input Noise Voltage Density f = 1kHz 50 nV/ Hz n i Input Noise Current Density f = 1kHz 0.05 pA/ Hz n R Input Resistance Differential l 725 MW IN Common Mode, V = 0V to 4V 6 GW CM Input Voltage Range l04 V CMRR Common Mode Rejection Ratio V = 0V to 4V 92 110 dB CM l 85 97 dB A Large-Signal Voltage Gain V = 200mV to 4.5V, No Load l 100 450 V/mV VOL O V = 200mV to 4.5V, R = 1.1k l 45 200 V/mV O L V = 200mV to 4.5V, R = 500W l 35 150 V/mV O L Shunt Gain I = 0.1mA to 5mA V/mV OUT V = 1.5V to 6.45V 15 25 V/mV O (Note 5) l 820 V/mV V Output Voltage Swing Low V = 5V, No Load l 210 mV OL S V = 5V, I = 5mA l 125 250 mV S SINK V = 5V, I = 10mA l 200 500 mV S SINK V Output Voltage Swing High V = 5V, No Load l 4.975 4.985 V OH S V = 5V, I = 5mA l 4.65 4.8 V S SOURCE V = 5V, I = 10mA l 4.55 4.75 V S SOURCE 2 + U WWW