LTC1100 Precision, Zero-Drift Instrumentation Amplifier FEATURES DESCRIPTIO Offset Voltage: 10V Max The LTC 1100 is a high precision instrumentation amplifier Offset Voltage Drift: 100nV/C Max using zero-drift techniques to achieve outstanding DC Bias Current: 65pA Max performance. The input DC offset is typically 1V while Offset Current: 65pA Max the DC offset drift is typically 5nV/C a very low bias Gain Nonlinearity: 20ppm Max current of 65pA is also achieved. Gain Error: 0.075% Max The LTC1100 is self-contained that is, it achieves a differ- CMRR: 90dB ential gain of 100 without any external gain setting resistor 0.1Hz to 10Hz Noise: 1.9V P-P or trim pot. The gain linearity is 20ppm and the gain drift is Single 5V Supply Operation 4ppm/C. The LTC1100 operates from a single 5V supply 8-Pin MiniDIP up to 8V. The output typically swings 300mV from its power supply rails with a 10k load. U APPLICATIO S An optional external capacitor can be added from Pin 7 to Pin 8 to tailor the devices 18kHz bandwidth and to Thermocouple Amplifiers eliminate any unwanted noise pickup. Strain Gauge Amplifiers Differential to Single-Ended Converters The LTC1100 is also offered in a 16-pin surface mount package with selectable gains of 10 or 100. The LTC1100 is manufactured using Linear Technologys TM enhanced LTCMOS silicon gate process. , LTC and LT are registered trademarks of Linear Technology Corporation. LTCMOS is a trademark of Linear Technology Corporation TYPICAL APPLICATIO Single 5V Supply, DC Instrumentation Amplifier 1 8 V OUT 0.01F 2 7 LTC1100 3 6 V V IN IN 4 5 + V = 5V 0.1F V = 100 V (V ) OUT IN IN LTC1100 TA01 1100fc 1 U ULTC1100 ABSOLUTE AXI U RATI GS (Note 1) Operating Temperature Range Storage Temperature Range ................ 65C to 150C + LTC1100M/AM (OBSOLETE) ........... 55C to 125C Total Supply Voltage (V to V ) ............................. 18V + LTC1100C ......................................... 40C to 85C Input Voltage .......................(V + 0.3V) to (V 0.3V) Output Short Circuit Duration ......................... Indefinite Lead Temperature (Soldering, 10 sec)................. 300C UUW PACKAGE/ORDER I FOR ATIO TOP VIEW ORDER PART ORDER PART TOP VIEW GND REF 1 8 V NUMBER NUMBER OUT NC 1 16 NC CMRR 2 COMP 7 GND REF 2 15 V OUT LTC1100CN8 LTC1100CSW V 3 6 V IN IN G = 10 3 14 G = 10 + V 4 5 V 4 CMRR 13 COMP 5 NC 12 NC N8 PACKAGE 8-LEAD PDIP 6 V 11 V IN IN T = 110C, = 130C/W JMAX JA + 7 V 10 V J PACKAGE LTC1100CJ8 8 9 NC NC 8-LEAD CERDIP T = 150C, = 100C/W LTC1100AMJ8 JMAX JA SW PACKAGE LTC1100MJ8 16-LEAD PLASTIC SO WIDE T = 110C, = 100C/W JMAX JA OBSOLETE PACKAGE Consider the N Package for an Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25C. V = 5V, R = 10k, C = 1000pF, unless otherwise noted. A S L C LTC1100ACN LTC1100CN/CJ PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Gain Error 0.01 0.05 0.01 0.075 % 0.10 0.150 % Gain Nonlinearity 3 8 3 20 ppm 12 30 12 60 ppm Input Offset Voltage (Note 2) 1 10 1 10 V Input Offset Voltage Drift (Note 2) 5 100 5 100 nV/C Input Noise Voltage DC to 10Hz, T =25C 1.9 1.9 V A P-P Input Bias Current 2.5 50 2.5 65 pA 120 135 pA Input Offset Current 10 50 10 65 pA Common Mode Rejection Ratio V = 2.3V to 4.7V (Note 3) 104 115 90 110 dB CM Power Supply Rejection Ratio V = 2.375V to 8V 120 105 dB S Output Voltage Swing R = 2k, V = 8V 7.2 6.2 7.2 6.2 V L S R =10k, V = 8V 7.7 7.5 7.7 7.5 V L S Supply Current 2.4 2.8 2.4 3.3 mA 3.4 4.0 3.4 4.5 mA Internal Sampling Frequency 2.8 2.8 kHz Bandwidth 18 18 kHz 1100fc 2 U WWW