Datasheet LTC2430, LTC2431 (Analog Devices) - 6
| Fabricante | Analog Devices |
| Descripción | 20-Bit No Latency ∆Σ™ ADCs with Differential Input and Differential Reference |
| Páginas / Página | 40 / 6 — TYPICAL PERFOR A CE CHARACTERISTICS. Total Unadjusted Error. (VCC = 5V, … |
| Formato / tamaño de archivo | PDF / 466 Kb |
| Idioma del documento | Inglés |
TYPICAL PERFOR A CE CHARACTERISTICS. Total Unadjusted Error. (VCC = 5V, VREF = 5V). (VCC = 5V, VREF = 2.5V)
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LTC2430/LTC2431
W U TYPICAL PERFOR A CE CHARACTERISTICS Total Unadjusted Error Total Unadjusted Error Total Unadjusted Error (VCC = 5V, VREF = 5V) (VCC = 5V, VREF = 2.5V) (VCC = 2.7V, VREF = 2.5V)
5 5 20 VCC = 5V VCC = 5V VCC = 2.7V 4 VREF = 5V 4 VREF = 2.5V 15 VREF = 2.5V V VINCM = VINCM = 1.25V V –45°C 3 INCM = VINCM = 2.5V 3 INCM = VINCM = 1.25V FO = GND FO = GND –45°C 10 FO = GND ) 2 ) 2 ) 25°C REF 25°C 85°C REF REF 5 1 1 0 0 0 25°C 85°C –1 –1 –45°C 85°C –5 TUE (ppm OF V –2 TUE (ppm OF V –2 TUE (ppm OF V –10 –3 –3 –15 –4 –4 –5 –5 –20 –2.5 –2 –1.5 –1 – 0.5 0 0.5 1 1.5 2 2.5 –1.25 –1 –0.75–0.5–0.25 0 0.25 0.5 0.75 1 1.25 –1.25 –1 –0.75–0.5–0.25 0 0.25 0.5 0.75 1 1.25 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 24301 G01 24301 G02 24301 G03
Integral Nonlinearity Integral Nonlinearity Integral Nonlinearity (VCC = 5V, VREF = 5V) (VCC = 5V, VREF = 2.5V) (VCC = 2.7V, VREF = 2.5V)
5 5 20 VCC = 5V VCC = 2.7V 4 4 VREF = 2.5V 15 VREF = 2.5V V V 3 3 INCM = VINCM = 1.25V INCM = VINCM = 1.25V 25°C FO = GND 10 FO = GND ) 2 ) 2 ) –45°C REF –45°C REF 85°C REF 5 1 1 25°C 0 0 0 85°C –1 –1 –45°C –5 85°C INL (ppm OF V 25°C –2 INL (ppm OF V –2 INL (ppm OF V V –10 CC = 5V –3 V –3 REF = 5V –15 –4 VINCM = VINCM = 2.5V –4 FO = GND –5 –5 –20 –2.5 –2 –1.5 –1 – 0.5 0 0.5 1 1.5 2 2.5 –1.25 –1 –0.75–0.5–0.25 0 0.25 0.5 0.75 1 1.25 –1.25 –1 –0.75–0.5–0.25 0 0.25 0.5 0.75 1 1.25 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 24301 G04 24301 G05 24301 G06
Noise Histogram (Output Rate = Noise Histogram (Output Rate = RMS Noise 7.5Hz, VCC = 5V, VREF = 5V) 7.5Hz, VCC = 2.7V, VREF = 2.5V) vs Input Differential Voltage
40 20 1.0 10,000 CONSECUTIVE GAUSSIAN 10,000 CONSECUTIVE GAUSSIAN VCC = 5V 35 READINGS DISTRIBUTION 18 READINGS DISTRIBUTION 0.9 VREF = 5V VCC = 5V m = – 0.25ppm V m = –1.07ppm V 16 CC = 2.7V INCM = 2.5V ) 0.8 30 VREF = 5V σ = 0.550ppm VREF = 2.5V σ = 1.06ppm FO = GND VIN = 0V 14 VIN = 0V REF 0.7 TA = 25°C 25 VINCM = 2.5V VINCM = 2.5V F 12 O = GND FO = GND 0.6 20 TA = 25°C T 10 A = 25°C 0.5 15 8 0.4 6 0.3 10 NUMBER OF READINGS (%) NUMBER OF READINGS (%) RMS NOISE (ppm OF V 4 0.2 5 2 0.1 0 0 0 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 –4 –3 –2 –1 0 1 2 3 4 5 6 –2.5 –2 –1.5 –1 – 0.5 0 0.5 1 1.5 2 2.5 OUTPUT CODE (ppm OF VREF) OUTPUT CODE (ppm OF VREF) INPUT DIFFERENTIAL VOLTAGE (V) 24301 G07 24301 G08 24301 G10 24301f 6
W U TYPICAL PERFOR A CE CHARACTERISTICS Total Unadjusted Error Total Unadjusted Error Total Unadjusted Error (VCC = 5V, VREF = 5V) (VCC = 5V, VREF = 2.5V) (VCC = 2.7V, VREF = 2.5V)
5 5 20 VCC = 5V VCC = 5V VCC = 2.7V 4 VREF = 5V 4 VREF = 2.5V 15 VREF = 2.5V V VINCM = VINCM = 1.25V V –45°C 3 INCM = VINCM = 2.5V 3 INCM = VINCM = 1.25V FO = GND FO = GND –45°C 10 FO = GND ) 2 ) 2 ) 25°C REF 25°C 85°C REF REF 5 1 1 0 0 0 25°C 85°C –1 –1 –45°C 85°C –5 TUE (ppm OF V –2 TUE (ppm OF V –2 TUE (ppm OF V –10 –3 –3 –15 –4 –4 –5 –5 –20 –2.5 –2 –1.5 –1 – 0.5 0 0.5 1 1.5 2 2.5 –1.25 –1 –0.75–0.5–0.25 0 0.25 0.5 0.75 1 1.25 –1.25 –1 –0.75–0.5–0.25 0 0.25 0.5 0.75 1 1.25 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 24301 G01 24301 G02 24301 G03
Integral Nonlinearity Integral Nonlinearity Integral Nonlinearity (VCC = 5V, VREF = 5V) (VCC = 5V, VREF = 2.5V) (VCC = 2.7V, VREF = 2.5V)
5 5 20 VCC = 5V VCC = 2.7V 4 4 VREF = 2.5V 15 VREF = 2.5V V V 3 3 INCM = VINCM = 1.25V INCM = VINCM = 1.25V 25°C FO = GND 10 FO = GND ) 2 ) 2 ) –45°C REF –45°C REF 85°C REF 5 1 1 25°C 0 0 0 85°C –1 –1 –45°C –5 85°C INL (ppm OF V 25°C –2 INL (ppm OF V –2 INL (ppm OF V V –10 CC = 5V –3 V –3 REF = 5V –15 –4 VINCM = VINCM = 2.5V –4 FO = GND –5 –5 –20 –2.5 –2 –1.5 –1 – 0.5 0 0.5 1 1.5 2 2.5 –1.25 –1 –0.75–0.5–0.25 0 0.25 0.5 0.75 1 1.25 –1.25 –1 –0.75–0.5–0.25 0 0.25 0.5 0.75 1 1.25 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 24301 G04 24301 G05 24301 G06
Noise Histogram (Output Rate = Noise Histogram (Output Rate = RMS Noise 7.5Hz, VCC = 5V, VREF = 5V) 7.5Hz, VCC = 2.7V, VREF = 2.5V) vs Input Differential Voltage
40 20 1.0 10,000 CONSECUTIVE GAUSSIAN 10,000 CONSECUTIVE GAUSSIAN VCC = 5V 35 READINGS DISTRIBUTION 18 READINGS DISTRIBUTION 0.9 VREF = 5V VCC = 5V m = – 0.25ppm V m = –1.07ppm V 16 CC = 2.7V INCM = 2.5V ) 0.8 30 VREF = 5V σ = 0.550ppm VREF = 2.5V σ = 1.06ppm FO = GND VIN = 0V 14 VIN = 0V REF 0.7 TA = 25°C 25 VINCM = 2.5V VINCM = 2.5V F 12 O = GND FO = GND 0.6 20 TA = 25°C T 10 A = 25°C 0.5 15 8 0.4 6 0.3 10 NUMBER OF READINGS (%) NUMBER OF READINGS (%) RMS NOISE (ppm OF V 4 0.2 5 2 0.1 0 0 0 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 –4 –3 –2 –1 0 1 2 3 4 5 6 –2.5 –2 –1.5 –1 – 0.5 0 0.5 1 1.5 2 2.5 OUTPUT CODE (ppm OF VREF) OUTPUT CODE (ppm OF VREF) INPUT DIFFERENTIAL VOLTAGE (V) 24301 G07 24301 G08 24301 G10 24301f 6