LTC1050 Precision Zero-Drift Operational Amplifier with Internal Capacitors FEATURES DESCRIPTIO The LTC 1050 is a high performance, low cost zero-drift No External Components Required operational amplifier. The unique achievement of the Noise Tested and Guaranteed Low Aliasing Errors LTC1050 is that it integrates on-chip the two sample-and- hold capacitors usually required externally by other chop- Maximum Offset Voltage: 5V per amplifiers. Further, the LTC1050 offers better com- Maximum Offset Voltage Drift: 0.05V/C Low Noise: 1.6V (0.1Hz to 10Hz) bined overall DC and AC performance than is available P-P from other chopper stabilized amplifiers with or without Minimum Voltage Gain: 130dB internal sample-and-hold capacitors. Minimum PSRR: 125dB Minimum CMRR: 120dB The LTC1050 has an offset voltage of 0.5V, drift of Low Supply Current: 1mA 0.01V/C, DC to 10Hz, input noise voltage of 1.6V P-P Single Supply Operation: 4.75V to 16V and a typical voltage gain of 160dB. The slew rate of 4V/s Input Common Mode Range Includes Ground and a gain bandwidth product of 2.5MHz are achieved with Output Swings to Ground only 1mA of supply current. Typical Overload Recovery Time: 3ms Overload recovery times from positive and negative satu- U ration conditions are 1.5ms and 3ms respectively, which APPLICATIO S represents an improvement of about 100 times over chop- Thermocouple Amplifiers per amplifiers using external capacitors. Pin 5 is an optional Electronic Scales external clock input, useful for synchronization purposes. Medical Instrumentation The LTC1050 is available in standard 8-pin metal can, Strain Gauge Amplifiers plastic and ceramic dual-in-line packages as well as an High Resolution Data Acquisition DC Accurate RC Active Filters SO-8 package. The LTC1050 can be an improved plug-in , LTC and LT are registered trademarks of Linear Technology Corporation. replacement for most standard op amps. TYPICAL APPLICATIO High Performance, Low Cost Instrumentation Amplifier Noise Spectrum 5V 160 140 4 5V 1/2 LTC1043 120 3 7 7 8 + 100 6 LTC1050 V OUT 2 80 11 4 60 DIFFERENTIAL C C S H 5V INPUT 1F 1F 1F 40 12 20 R1 R2 0 13 14 1050 TA01 10 100 1k 10k 100k FREQUENCY (Hz) CMRR > 120dB AT DC 16 17 1050 TA02 CMRR > 120dB AT 60Hz 0.01F DUAL SUPPLY OR SINGLE 5V GAIN = 1 + R2/R1 V = 5V OS 5V COMMON MODE INPUT VOLTAGE EQUALS THE SUPPLIES 1050fb 1 VOLTAGE NOISE DENSITY (nV/ Hz) U ULTC1050 (Note 1) ABSOLUTEXAI U RATI GS + Total Supply Voltage (V to V ) .............................. 18V Operating Temperature Range + Input Voltage ........................ (V + 0.3V) to (V 0.3V) LTC1050AC/C .................................. 40C to 85C Output Short-Circuit Duration ......................... Indefinite LTC1050H ..................................... 40C to 125C Storage Temperature Range ................ 65C to 150C LTC1050AM/M (OBSOLETE) .......... 55C to 125C Lead Temperature (Soldering, 10 sec)................. 300C PACKAGE/ORDER I FOR ATIO TOP VIEW ORDER PART ORDER PART NC NUMBER NUMBER TOP VIEW 8 + NC 1 7 V (CASE) LTC1050ACH NC 1 8 NC LTC1050CS8 + 2 IN 6 OUT LTC1050CH LTC1050HS8 IN 2 7 V + LTC1050AMH +IN 3 6 OUT 5 EXT CLOCK +IN 3 4 INPUT LTC1050MH V 4 5 EXT CLOCK V INPUT S8 PART MARKING S8 PACKAGE H PACKAGE 8-LEAD PLASTIC SO 8-LEAD TO-5 METAL CAN 1050 T = 150C T = 150C, = 150C/W JMAX JMAX JA 1050H OBSOLETE PACKAGE TOP VIEW ORDER PART ORDER PART TOP VIEW NUMBER NUMBER NC 1 NC 8 1 NC NC 14 + IN 2 7 V LTC1050ACN8 2 NC LTC1050CN NC 13 +IN OUT 3 6 LTC1050CN8 3 NC NC 12 V 4 5 EXT CLOCK + 4 V IN 11 INPUT 5 OUT +IN 10 N8 PACKAGE LTC1050ACJ8 8-LEAD PDIP 6 NC NC 9 LTC1050CJ8 T = 150C, = 100C/W JMAX JA 7 NC V 8 LTC1050AMJ8 J8 PACKAGE 8-LEAD CERDIP T = 150C, = 100C/W N PACKAGE JMAX JA LTC1050MJ8 14-LEAD PDIP OBSOLETE PACKAGE T = 150C, = 70C/W JMAX JA Consider the N8 Package for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. The denotes specifications which apply over the full operating temperature LECTR AL CHARACTERIST E IC ICS range, otherwise specifications are at T = 25C. V = 5V A S LTC1050AM LTC1050AC PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Input Offset Voltage (Note 3) 0.5 5 0.5 5 V Average Input Offset Drift (Note 3) 0.01 0.05 0.01 0.05 V/C Long Term Offset Voltage Drift 50 50 nV/ Mo Input Offset Current (Note 5) 20 60 20 60 pA 300 150 pA Input Bias Current (Note 5) 10 30 10 30 pA 2000 100 pA Input Noise Voltage 0.1Hz to 10Hz (Note 6) 1.6 2.1 1.6 2.1 V P-P DC to 1Hz 0.6 0.6 V P-P 1050fb 2 U WU U W W W