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LTC1043CSW датащи(PDF) 4 Page - Linear Technology |
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LTC1043CSW датащи(HTML) 4 Page - Linear Technology |
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4 / 16 page ![]() LTC1043 4 1043fa Oscillator Frequency, fOSC vs Ambient Temperature, TA (Test Circuits 2 through 4) TYPICAL PERFOR A CE CHARACTERISTICS Break-Before-Make Time, tNOV, vs Supply Voltage COSC Pin ISINK, ISOURCE vs Supply Voltage AMBIENT TEMPERATURE (°C) –50 100 125 175 200 225 350 275 0 50 75 LTC1043 • TPC10 150 300 325 250 –25 25 100 125 COSC = 0pF V+ = 10V, V– = 0V V+ = 5V, V– = 0V V+ = 15V, V– = 0V 0 0 25 50 75 100 246 8 LTC1043 • TPC11 10 12 14 16 18 ISINK, TA = 25°C ISOURCE, TA = –55°C ISOURCE, TA = 25°C ISINK, TA = 125°C ISOURCE, TA = 125°C ISINK, TA = –55°C VSUPPLY (V) 0 10 20 40 50 60 80 2 10 14 LTC1043 • TPC12 30 70 8 18 20 4 6 12 16 TA = 25°C BLOCK DIAGRA LTC1043 • BD01 12 11 3 2 CB – CB + SHB V+ THE SWITCHES ARE TIMED AS SHOWN WITH PIN 16 HIGH THE CHARGE BALANCING CIRCUITRY SAMPLES THE VOLTAGE AT S3 WITH RESPECT TO S4 (PIN 16 HIGH) AND INJECTS A SMALL CHARGE AT THE C+ PIN (PIN 16 LOW). THIS BOOSTS THE CMRR WHEN THE LTC1043 IS USED AS AN INSTRUMENTATION AMPLIFIER FRONT END. FOR MINIMUM CHARGE INJECTION IN OTHER TYPES OF APPLICATIONS, S3A AND S3B SHOULD BE GROUNDED V– CHARGE BALANCING CIRCUITRY NON-OVERLAPPING CLOCK OSCILLATOR 10 CHARGE BALANCING CIRCUITRY 1 CA – CA + SHA COSC S1A 7 13 6 18 16 4 17 8 14 15 5 S4A S1B S2B S4B V+ V– S2A S3B S3A |
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