Datasheet LTC2420 (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | 20-Bit µPower No Latency ∆Σ™ ADC in SO-8 |
| Seiten / Seite | 36 / 6 — TYPICAL PERFOR A CE CHARACTERISTICS. RMS Noise vs Reference Voltage. … |
| Dateiformat / Größe | PDF / 405 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFOR A CE CHARACTERISTICS. RMS Noise vs Reference Voltage. Offset Error vs VCC. RMS Noise vs VCC. Noise Histogram
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LTC2420
W U TYPICAL PERFOR A CE CHARACTERISTICS RMS Noise vs Reference Voltage Offset Error vs VCC RMS Noise vs VCC
60 10 10.0 VCC = 5V VREF = 2.5V VREF = 2.5V TA = 25°C TA = 25°C TA = 25°C 50 ) 5 7.5 REF 40 30 0 5.0 20 RMS NOISE (ppm) OFFSET ERROR (ppm) –5 2.5 RMS NOISE (ppm OF V 10 0 –10 0 0 1 2 3 4 5 2.7 3.2 3.7 4.2 4.7 5.2 5.5 2.7 3.2 3.7 4.2 4.7 5.2 5.5 REFERENCE VOLTAGE (V) VCC (V) VCC (V) 2420 G10 2420 G11 2420 G12
Noise Histogram RMS Noise vs Code Out Offset Error vs Temperature
350 5.00 10 V V CC = 5 CC = 5V VCC = 5V V V REF = 5 REF = 5V VREF = 5V 300 V V IN = 0 IN = 0.3V TO 5.3V VIN = 0V 3.75 TA = 25°C 5 250 200 2.50 0 150 RMS NOISE (ppm) 100 OFFSET ERROR (ppm) NUMBER OF READINGS 1.25 –5 50 0 0 –10 –2 0 2 4 6 0 7FFFFF FFFFFF –55 –30 –5 20 45 70 95 120 OUTPUT CODE (ppm) CODE OUT (HEX) TEMPERATURE (°C) 2420G13 2420 G14 2420 G15
Full-Scale Error Full-Scale Error vs Temperature vs Reference Voltage Full-Scale Error vs VCC
10 0 10 VCC = 5V VREF = 2.5V VREF = 5V VIN = 2.5V VIN = 5V –25 TA = 25°C 5 5 –50 0 –75 0 –100 –5 –5 FULL-SCALE ERROR (ppm) FULL-SCALE ERROR (ppm) FULL-SCALE ERROR (ppm) –125 VCC = 5V VIN = VREF –10 –150 –10 –55 –30 –5 20 45 70 95 120 0 1 2 3 4 5 2.7 3.2 3.7 4.2 4.7 5.2 5.5 TEMPERATURE (°C) REFERENCE VOLTAGE (V) VCC (V) 2420 G16 2420 G17 2420 G18 6
W U TYPICAL PERFOR A CE CHARACTERISTICS RMS Noise vs Reference Voltage Offset Error vs VCC RMS Noise vs VCC
60 10 10.0 VCC = 5V VREF = 2.5V VREF = 2.5V TA = 25°C TA = 25°C TA = 25°C 50 ) 5 7.5 REF 40 30 0 5.0 20 RMS NOISE (ppm) OFFSET ERROR (ppm) –5 2.5 RMS NOISE (ppm OF V 10 0 –10 0 0 1 2 3 4 5 2.7 3.2 3.7 4.2 4.7 5.2 5.5 2.7 3.2 3.7 4.2 4.7 5.2 5.5 REFERENCE VOLTAGE (V) VCC (V) VCC (V) 2420 G10 2420 G11 2420 G12
Noise Histogram RMS Noise vs Code Out Offset Error vs Temperature
350 5.00 10 V V CC = 5 CC = 5V VCC = 5V V V REF = 5 REF = 5V VREF = 5V 300 V V IN = 0 IN = 0.3V TO 5.3V VIN = 0V 3.75 TA = 25°C 5 250 200 2.50 0 150 RMS NOISE (ppm) 100 OFFSET ERROR (ppm) NUMBER OF READINGS 1.25 –5 50 0 0 –10 –2 0 2 4 6 0 7FFFFF FFFFFF –55 –30 –5 20 45 70 95 120 OUTPUT CODE (ppm) CODE OUT (HEX) TEMPERATURE (°C) 2420G13 2420 G14 2420 G15
Full-Scale Error Full-Scale Error vs Temperature vs Reference Voltage Full-Scale Error vs VCC
10 0 10 VCC = 5V VREF = 2.5V VREF = 5V VIN = 2.5V VIN = 5V –25 TA = 25°C 5 5 –50 0 –75 0 –100 –5 –5 FULL-SCALE ERROR (ppm) FULL-SCALE ERROR (ppm) FULL-SCALE ERROR (ppm) –125 VCC = 5V VIN = VREF –10 –150 –10 –55 –30 –5 20 45 70 95 120 0 1 2 3 4 5 2.7 3.2 3.7 4.2 4.7 5.2 5.5 TEMPERATURE (°C) REFERENCE VOLTAGE (V) VCC (V) 2420 G16 2420 G17 2420 G18 6