LT1124 Linear Technology, LT1124 Datasheet
LT1124
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LT1124 Summary of contents
Page 1
... Power consumption of the LT1124 is one half of two OP-27s. Low power and high performance in an 8-pin SO package make the LT1124 a first choice for surface mounted systems and where board space is restricted. For a decompensated version of these devices, with three times higher slew rate and bandwidth, please see the LT1126/LT1127 data sheet ...
Page 2
... Time Voltage Stability I Input Offset Current (Note 1) Operating Temperature Range LT1124AC/LT1124C LT1125AC/LT1125C (Note 10) .......... – LT1124AI/LT1124I ............................ – LT1124AM/LT1124M LT1125AM/LT1125M ...................... – 125 ORDER PART NUMBER LT1124CS8 OUT A 1 LT1124AIS8 – LT1124IS8 + – ...
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... S LT1124AM LT1124M LT1125AM LT1125M TYP MAX MIN TYP MAX 50 170 60 250 55 190 70 290 0.3 1.0 0.4 1 11.3 12 122 100 120 122 104 ...
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... Note 10: The LT1124C/LT1125C and LT1124AC/LT1125AC are guaranteed to meet specified performance from and are designed, characterized and expected to meet these extended temperature limits, but are not tested at –40 C and 85 C. The LT1124AI and LT1124I are guaranteed to meet the extended temperature limits. A ...
Page 5
... Power Supply Rejection Ratio vs Frequency 160 140 120 100 80 – PSRR 60 +PSRR 10M FREQUENCY (Hz 15V 1000 1124/25 G03 25 C – 125 C 125 – LT1124 G06 1124/25 G09 5 ...
Page 6
... C Voltage Gain vs Temperature 20 18 LT1124AM/LT1125AM 10k L 14 LT1124M/LT1125M 15V 10V OUT LT1124AM/LT1125AM LT1124M/LT1125M 0 –75 –50 – 100 TEMPERATURE ( C) 1124/25 G11 Offset Voltage Drift with Temperature of Representative Units 15V –10 – ...
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... V = 20Vp –10 V MEASUREMENT BANDWIDTH = 10Hz TO 80kHz 0.010 OP270 0.001 0.0001 20 100 1k 10k 20k FREQUENCY (Hz) 1124/25 G23 Intermodulation Distortion (CCIF Method)* vs Frequency LT1124 and OP270 0.010 Z = 2k/15pF L f (IM) = 1kHz f = 13.5kHz 20Vp –10 V MEASUREMENT BANDWIDTH = 10Hz TO 80kHz 0.001 0.0001 30 3k ...
Page 8
... V/V). However, Table 1 can be used to estimate the expected matching performance between the two sides of the LT1124, and between amplifiers A and D, and between amplifiers B and C of the LT1125. Offset Voltage and Drift Thermocouple effects, caused by temperature gradients across dissimilar metals at the contacts to the input terminals, can exceed the inherent drift of the amplifier unless proper care is exercised ...
Page 9
... C , the effect of the F F Each individual amplifier is tested to 4.2nV/ Hz voltage noise; i.e., for the LT1124 two tests, for the LT1125 four tests are performed. Noise testing for competing multiple op amps, if done at all, may be sample tested or tested using the circuit shown in Figure ...
Page 10
... RN60C FILM RESISTORS –15V INPUT THE HIGH GAIN AND WIDE BANDWIDTH OF THE LT1124/LT1125, IS USEFUL IN LOW FREQUENCY HIGH CLOSED-LOOP GAIN AMPLIFIER APPLICATIONS. A TYPICAL PRECISION OP AMP MAY HAVE AN OPEN-LOOP GAIN OF ONE MILLION WITH 500kHz BANDWIDTH. AS THE GAIN ERROR PLOT SHOWS, THIS DEVICE IS CAPABLE OF 0.1% AMPLIFYING ACCURACY UP TO 0.3Hz ONLY. EVEN INSTRUMENTATION RANGE SIGNALS CAN VARY AT A FASTER RATE. THE LT1124/LT1125 “ ...
Page 11
... AGRA I S CHE TI Q7 21k Q9 Q13 Q8 Q10 – V NONINVERTING INPUT (+) Q1A Q1B Q3 INVERTING INPUT (–) (1/2 LT1124, 1/4 LT1125) 360 A 200pF 21k 3.6k Q17 Q19 Q20 Q2A Q2B + V Q22 Q11 Q12 Q15 Q16 200 A 100 A 200 6k LT1124/LT1125 570 A 100 A 3.6k 35pF Q27 Q18 ...
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... LT1124/LT1125 PACKAGE DESCRIPTIO 0.045 – 0.068 (1.143 – 1.727) FULL LEAD OPTION 0.300 BSC (0.762 BSC) 0.008 – 0.018 (0.203 – 0.457) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0 ...
Page 13
... TYP 0.014 – 0.019 (0.355 – 0.483) LT1124/LT1125 0.150 – 0.157** (3.810 – 3.988 0.004 – 0.010 (0.101 – 0.254) 0.050 (1 ...
Page 14
... LT1124/LT1125 PACKAGE DESCRIPTIO 0.300 BSC (0.762 BSC) 0.008 – 0.018 (0.203 – 0.457) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.035 0.325 –0.015 +0.889 8.255 –0.381 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS ...
Page 15
... NOTE 0.093 – 0.104 45 (2.362 – 2.642) 0 – 8 TYP 0.050 (1.270) TYP 0.014 – 0.019 (0.356 – 0.482) TYP LT1124/LT1125 0.398 – 0.413 0.394 – 0.419 (10.007 – 10.643 0.037 – 0.045 (0.940 – 1.143) 0.004 – ...
Page 16
... THE LT1124/LT1125 IS CAPABLE OF PROVIDING EXCITATION CURRENT DIRECTLY TO BIAS THE 350 BRIDGE AT 5V WITH ONLY 5V ACROSS THE BRIDGE (AS OPPOSED 1 TO THE USUAL 10V) TOTAL POWER DISSIPATION AND BRIDGE WARM-UP DRIFT IS REDUCED. THE BRIDGE OUTPUT SIGNAL IS HALVED, BUT THE LT1124/LT1125 CAN AMPLIFY THE REDUCED SIGNAL ACCURATELY. REFERENCE OUTPUT ...