LT1028 LINER [Linear Technology], LT1028 Datasheet
LT1028
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LT1028 Summary of contents
Page 1
... Although the LT1028/ LT1128 input stage operates at nearly 1mA of collector current to achieve low voltage noise, input bias current is only 25nA. The LT1028/LT1128’s voltage noise is less than the noise impedance transducer or audio amplifier applications, the LT1028/LT1128’s contribution to total system noise will be negligible ...
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... Input Bias Current B e Input Noise Voltage Operating Temperature Range LT1028/LT1128AM, M ..................... – 125 C LT1028/LT1128AC, C ......................... – Storage Temperature Range All Devices ........................................ – 150 C Lead Temperature (Soldering, 10 sec.)................. 300 ORDER PART NUMBER TRIM – ...
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... LT1028AM LT1128AM CONDITIONS MIN (Note 1) (Note7 10 10.3V 106 4.5V to 16V 110 10V 3 1k 10V 2 10.3 L LT1028/LT1128 LT1028M/C LT1128M/C TYP MAX MIN TYP MAX 1.00 1.7 1.0 1.9 0.85 1.1 0.9 1.2 4.7 10.0 4.7 12.0 1.0 1.6 1.0 1.8 300 300 12.2 11.0 12.2 126 110 126 133 110 132 30.0 5.0 30.0 20 ...
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... Note 9: This parameter guaranteed by design, fully warmed includes chip temperature increase due to supply and load currents. Note 10: The LT1028/LT1128 are not tested and are not quality- assurance-sampled at –40 C and These specifications are guaranteed by design, correlation and/or inference from – and /or 125 C tests ...
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... BANDWIDTH (Hz) Current Noise Spectrum 100 MAXIMUM 10 1/f CORNER = 800Hz TYPICAL 1 1/f CORNER = 250Hz 0.1 10 100 1k 3k 10k FREQUENCY (Hz) Voltage Noise vs Temperature 2 ±15V S 1.6 1.2 AT 10Hz 0.8 AT 1kHz O.4 0 100 –50 – TEMPERATURE (°C) 1M 10M LT1028/1128 • TPC03 10k LT1028/1128 • TPC06 75 100 125 LT1028/1128 • TPC09 5 ...
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... Supply Current vs Temperature ±15V ± –50 – TEMPERATURE (°C) LT1028/1128 • TPC17 Long-Term Stability of Five Representative Units ±15V 25° AFTER 1 DAY PRE-WARM –2 –4 –6 –8 –10 100 125 0 1 ...
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... CAPACITIVE LOAD (pF) Maximum Undistorted Output vs Frequency LT1128 LT1028 10k 100k 1M FREQUENCY (Hz ±15V 25°C A 10000 LT1028/1128 • TPC21 = ±15V S = 25° 10mV O P-P 10000 LT1028/1128 • TPC ±15V 25° 10M LT1028/1128 • TPC27 7 ...
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... Slew Rate, Gain-Bandwidth Product Over Temperature ±15V S 17 GBW 16 FALL RISE 100 –50 – TEMPERATURE (˚C) LT1028/1128 • TPC30 LT1128 Slew Rate, Gain-Bandwidth Product Over Temperature 9 FALL 8 7 RISE 6 GBW –50 75 100 – TEMPERATURE (° ...
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... V = ±5V S –2 – ±15V S – ±5V TO ±15V – V – 100 125 –25 TEMPERATURE (°C) LT1028/1128 • TPC37 LT1028 Total Harmonic Distortion vs Frequency and Load Resistance 0 +1000 +1000 600 L 0. –1000 +1000 V R ...
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... largest term the example above, and the LT1028/ LT1128’s voltage noise becomes negligible further increased, current noise becomes important. At 1kHz, when R component is larger than the resistor noise. The total noise versus matched source resistance plot illustrates the above calculations ...
Page 11
... Even a 10 resistor will show an apparent noise which 10% too high. The 0.1Hz to 10Hz peak-to-peak noise of the LT1028/ LT1128 is measured in the test circuit shown. The fre- quency response of this noise tester indicates that the ...
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... Offset Voltage Adjustment The input offset voltage of the LT1028/LT1128 and its drift with temperature, are permanently trimmed at wafer test- ing to a low level. However, if further adjustment of V necessary, the use nulling potentiometer will not degrade drift with temperature ...
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... When R cause R S1 the C short. When 100 < For example noise increase due to R > 2k, a pole will F F LT1028/LT1128 < 68pF), the LT1028 will be stable because of F 33pF 2k – LT1028 LT1028 500 + 50 is large enough to effectively F 500 will prevent the S2 ...
Page 14
... The presence of the 10pF capacitor cancels this pole and reduces overshoot to 5%. Over-Compensation The LT1028/LT1128 are equipped with a frequency over- compensation terminal (pin 5). A capacitor connected between pin 5 and the output will reduce noise bandwidth. Details are shown on the Slew Rate, Gain-Bandwidth Product vs Over-Compensation Capacitor plot ...
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... An LT1028 – 7.5 470 1.ASSUME VOLTAGE NOISE OF LT1028 AND 7.5 SOURCE RESISTOR = 0.9nV/ Hz. 2.GAIN WITH n LT1028s IN PARALLEL = n 200. 3.OUTPUT NOISE = n 200 0.9nV/ Hz. 0.9 OUTPUT NOISE 4.INPUT REFERRED NOISE = = nV/ Hz. n 200 n 5.NOISE CURRENT AT INPUT INCREASES n TIMES. 6. GAIN = 1000, BANDWIDTH = 1MHz, RMS NOISE 1MHz = ...
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... Chopper-Stabilized Amplifier 15V 1N758 LT1052 2 8 – 0.1 0.1 0.01 1N758 15V –15V 130 68 100k INPUT LT1028 2 – 4 –15V 1028/1128 TA11 10k LM301A + 8 3 – LT1012 – 1 –5V 16 30pF 4 –5V 30k ...
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... NON- Q7 INVERTING INPUT 4 4.5 A 4 INTERVING INPUT 0 2 1.8mA Q3 BIAS R7 80 – 50pF for LT1028 C2 = 275pF for LT1128 Q4 C1 257pF R10 Q17 400 Q16 Q18 Q11 Q9 Q8 Q10 1.5 A Q12 Q13 Q14 1.5 A 300 A Q15 R8 480 Q20 LT1028/LT1128 1 ...
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... LT1028/LT1128 PACKAGE DESCRIPTIO 0.290 – 0.320 (7.366 – 8.128) 0.008 – 0.018 0° – 15° (0.203 – 0.460) 0.038 – 0.068 0.385 ± 0.025 (0.965 – 1.727) (9.779 ± 0.635) 0.014 – 0.026 (0.360 – 0.660) 0.300 – 0.320 (7.620 – 8.128) ...
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... MAX 0.200 – 0.230 SEATING (5.080 – 5.842) PLANE BSC 0.010 – 0.045 (0.254 – 1.143) T JMAX JA JC 175 C 140 C/W 40 C/W LT1028/LT1128 0.398 – 0.413 (10.109 – 10.490 0.394 – 0.419 SEE NOTE (10.007 – 10.643)SOL16 ...
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... LT1028/LT1128 NORTHEAST REGION Linear Technology Corporation One Oxford Valley 2300 E. Lincoln Hwy.,Suite 306 Langhorne, PA 19047 Phone: (215) 757-8578 FAX: (215) 757-5631 SOUTHEAST REGION Linear Technology Corporation 17060 Dallas Parkway Suite 208 Dallas, TX 75248 Phone: (214) 733-3071 FAX: (214) 380-5138 FRANCE Linear Technology S.A.R.L. Immeuble " ...