LT1101 Precision, Micropower, Single Supply Instrumentation Amplifier (Fixed Gain = 10 or 100) FEATURES DESCRIPTIO Gain Error: 0.04% Max The LT 1101 establishes the following milestones: (1) It is the first micropower instrumentation amplifier, Gain Nonlinearity: 0.0008% (8ppm) Max (2) It is the first single supply instrumentation amplifier, Gain Drift: 4ppm/C Max (3) It is the first instrumentation amplifier to feature fixed Supply Current: 105A Max gains of 10 and/or 100 in low cost, space-saving 8-lead Offset Voltage: 160V Max packages. Offset Voltage Drift: 0.4V/C Typ Offset Current: 600pA Max The LT1101 is completely self-contained: no external gain CMRR, G = 100: 100dB Min setting resistor is required. The LT1101 combines its 0.1Hz to 10Hz Noise: 0.9Vp-p Typ micropower operation (75A supply current) with a 2.3pAp-p Typ gain error of 0.008%, gain linearity of 3ppm, gain drift of Gain Bandwidth Product: 250kHz Min 1ppm/C. The output is guaranteed to drive a 2k load to 10V with excellent gain accuracy. Single or Dual Supply Operation Surface Mount Package Available Other precision specifications are also outstanding: 50V input offset voltage, 130pA input offset current, and U low drift (0.4V/C and 0.7pA/C). In addition, unlike other APPLICATIO S instrumentation amplifiers, there is no output offset Differential Signal Amplification in Presence of voltage contribution to total error. Common Mode Voltage A full set of specifications are provided with 15V dual Micropower Bridge Transducer Amplifier supplies and for single 5V supply operation. The LT1101 Thermocouples can be operated from a single lithium cell or two Ni-Cad Strain Gauges batteries. Battery voltage can drop as low as 1.8V, yet the Thermistors LT1101 still maintains its gain accuracy. In single supply Differential Voltage-to-Current Converter applications, both input and output voltages swing Transformer Coupled Amplifier to within a few millivolts of ground. The output sinks 4mA to 20mA Bridge Transmitter current while swinging to groundno external, power , LTC and LT are registered trademarks of Linear Technology Corporation. consuming pull down resistors are needed. TYPICAL APPLICATIO Gain Error Distribution 1 8 30 GROUND G = 100 OUTPUT (REF) R = 50k L T = 25C 25 A 90R 90R 930 UNITS 2 7 SHORT TO 1, SHORT TO 8 TESTED G = 10 G = 10 20 IN ALL PACKAGES N.C. G = 100 N.C. G = 100 9R 9R R R 15 10 AB 3 6 5 INVERTING NONINVERTING R 9.2k + INPUT INPUT 4 5 + 0 V V 0.04 0.03 0.02 0.01 0 0.01 0.02 0.03 0.04 GROUND PIN 1, OUTPUT AT PIN 8 GAIN ERROR (%) G = 100: NO ADDITIONAL CONNECTIONS G = 10: SHORT PIN 2 TO PIN 1, SHORT PIN 7 TO PIN 8 LT1101 TA01 LT1101 TA02 1101fa 1 PERCENT OF UNITS + U ULT1101 ABSOLUTE AXI U RATI GS (Note 1) Supply Voltage ...................................................... 22V Operating Temperature Range Differential Input Voltage ....................................... 36V LT1101AM/LT1101M (OBSOLETE) ... 55C to 125C Input Voltage ............... Equal to Positive Supply Voltage LT1101AI/LT1101I .............................. 40C to 85C ..........10V Below Negative Supply Voltage LT1101AC/LT1101C ................................ 0C to 70C Output Short Circuit Duration .......................... Indefinite Storage Temperature Range ................. 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C UUW PACKAGE/ORDER I FOR ATIO TOP VIEW TOP VIEW TOP VIEW OUTPUT GROUND 8 GROUND OUT NC 1 16 NC 1 8 OUTPUT (REF) (REF) G = 10 1 7 GND (REF) 2 15 90R OUTPUT 90R 90R 90R 90R REF OUT NC 3 14 NC 90R 9R 2 7 R R G = 10 G = 10 REF OUT REF 4 9R 9R 13 9R 9R 2 6 +IN G = 10 G = 10 RR G = 10 RR IN 5 12 +IN 9R 6 +IN IN 3 NC 6 + 11 NC + + R 9.2k + 3 5 V IN + R 9.2k 7 10 V V + 4 4 5 V V NC 8 9 NC V (CASE) H PACKAGE N PACKAGE 8-LEAD PDIP SW PACKAGE 8-LEAD TO-5 METAL CAN T = 150C, = 130C/W 16-LEAD PLASTIC SO JMAX JA T = 150C, = 150C/W, = 45C/W J PACKAGE 8-LEAD CERDIP T = 150C, = 100C/W JMAX JA JC JMAX JA T = 150C, = 100C/W JMAX JA ORDER PART ORDER PART ORDER PART NUMBER NUMBER NUMBER LT1101AMH LT1101AMJ8 LT1101AIN8 LT1101SW LT1101MH LT1101MJ8 LT1101IN8 LT1101ISW LT1101ACH LT1101ACJ8 LT1101ACN8 LT1101CH LT1101CJ8 LT1101CN8 OBSOLETE PACKAGES Consider the N8 as an Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS V = 5V, 0V, V = 0.1V, V = 0.1V, G = 10 or 100, T = 25C, unless S CM REF(PIN 1) A otherwise noted. (Note 4) LT11O1AM/AI/AC LT1101M/I/C SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS G Gain Error G = 100, V = 0.1V to 3.5V, R = 50k 0.010 0.050 0.011 0.075 % E 0 L G = 10, V = 0.1V to 3.5V, R = 50k 0009 0.040 0.010 0.060 % 0 L G Gain Nonlinearity G = 100, R = 50k 20 60 20 75 ppm NL L G = 10, R = 50k (Note 2) 3 7 3 8 ppm L V Input Offset Voltage 50 160 60 220 V OS LT1101SW 250 600 V l Input Offset Current 0.13 0.60 0.15 0.90 nA OS I Input Bias Current 6 8 6 10 nA B I Supply Current 75 105 78 120 A S 1101fa 2 + + + U WWW