Datasheet LTC2430, LTC2431 (Analog Devices) - 8
| Hersteller | Analog Devices |
| Beschreibung | 20-Bit No Latency ∆Σ™ ADCs with Differential Input and Differential Reference |
| Seiten / Seite | 40 / 8 — TYPICAL PERFOR A CE CHARACTERISTICS. Full-Scale Error vs V. PSRR vs … |
| Dateiformat / Größe | PDF / 466 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFOR A CE CHARACTERISTICS. Full-Scale Error vs V. PSRR vs Frequency at V. REF. PSRR vs Frequency at VCC
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LTC2430/LTC2431
W U TYPICAL PERFOR A CE CHARACTERISTICS Full-Scale Error vs V Full-Scale Error vs V PSRR vs Frequency at V REF CC CC
20 5 0 VCC = 5V VREF = 2.5V VCC = 4.1VDC ±1.4V ) 4 15 REF– = GND ) REF– = GND REF+ = 2.5V –20 REF FO = GND REF F REF– = GND 3 O = GND 10 VINCM = 0.5VREF +FS ERROR VINCM = 0.5VREF IN+ = GND –40 +FS ERROR TA = 25°C 2 TA = 25°C IN– = GND 5 FO = GND 1 –60 TA = 25°C 0 0 –80 –5 –1 –FS ERROR REJECTION (dB) –2 –100 –10 –FS ERROR –3 FULL-SCALE ERROR (ppm OF V –15 FULL-SCALE ERROR (ppm OF V –120 –4 –20 –5 –140 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0 20 40 60 80 100 120 140 160 180 200 220 VREF (V) VCC (V) FREQUENCY AT VCC (Hz) 24301 G20 24301 G21 24301 G22
PSRR vs Frequency at VCC PSRR vs Frequency at VCC Conversion Current vs Temperature
0 0 240 V V CC = 4.1VDC CC = 4.1VDC ±0.7V REF+ = 2.5V REF+ = 2.5V –20 –20 230 VCC = 5.5V REF– = GND REF– = GND IN+ = GND IN+ = GND µA) 220 –40 IN– = GND –40 IN– = GND VCC = 5V F F O = GND O = GND 210 –60 TA = 25°C –60 TA = 25°C FO = GND 200 CS = GND –80 –80 SCK = NC 190 REJECTION (dB) REJECTION (dB) SDO = NC –100 –100 180 CONVERSION CURRENT ( VCC = 3V –120 –120 170 VCC = 2.7V –140 –140 160 1 10 100 1k 10k 100k 1M 15170 15220 15270 15320 15370 –45 –30 –15 0 15 30 45 60 75 90 FREQUENCY AT V FREQUENCY AT V CC (Hz) CC (Hz) TEMPERATURE (°C) 24301 G23 24301 G24 24301 G25
Conversion Current Sleep Mode Current vs Output Data Rate vs Temperature
1000 6 VREF = VCC FO = GND 900 IN+ = GND CS = VCC IN– = GND VCC = 5V 5 SCK = NC 800 SCK = NC µA) SDO = NC µA) SDO = NC VCC = 5.5V 700 SDI = GND 4 CS = GND 600 FO = EXT OSC 3 VCC = 5V 500 TA = 25°C VCC = 3V V 400 2 CC = 3V SUPPLY CURRENT ( 300 SLEEP MODE CURRENT ( 1 200 VCC = 2.7V 100 0 0 10 20 30 40 50 60 70 80 90 100 –45 –30 –15 0 15 30 45 60 75 90 OUTPUT DATA RATE (READINGS/SEC) TEMPERATURE (°C) 24301 G26 24301 G27 24301f 8
W U TYPICAL PERFOR A CE CHARACTERISTICS Full-Scale Error vs V Full-Scale Error vs V PSRR vs Frequency at V REF CC CC
20 5 0 VCC = 5V VREF = 2.5V VCC = 4.1VDC ±1.4V ) 4 15 REF– = GND ) REF– = GND REF+ = 2.5V –20 REF FO = GND REF F REF– = GND 3 O = GND 10 VINCM = 0.5VREF +FS ERROR VINCM = 0.5VREF IN+ = GND –40 +FS ERROR TA = 25°C 2 TA = 25°C IN– = GND 5 FO = GND 1 –60 TA = 25°C 0 0 –80 –5 –1 –FS ERROR REJECTION (dB) –2 –100 –10 –FS ERROR –3 FULL-SCALE ERROR (ppm OF V –15 FULL-SCALE ERROR (ppm OF V –120 –4 –20 –5 –140 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0 20 40 60 80 100 120 140 160 180 200 220 VREF (V) VCC (V) FREQUENCY AT VCC (Hz) 24301 G20 24301 G21 24301 G22
PSRR vs Frequency at VCC PSRR vs Frequency at VCC Conversion Current vs Temperature
0 0 240 V V CC = 4.1VDC CC = 4.1VDC ±0.7V REF+ = 2.5V REF+ = 2.5V –20 –20 230 VCC = 5.5V REF– = GND REF– = GND IN+ = GND IN+ = GND µA) 220 –40 IN– = GND –40 IN– = GND VCC = 5V F F O = GND O = GND 210 –60 TA = 25°C –60 TA = 25°C FO = GND 200 CS = GND –80 –80 SCK = NC 190 REJECTION (dB) REJECTION (dB) SDO = NC –100 –100 180 CONVERSION CURRENT ( VCC = 3V –120 –120 170 VCC = 2.7V –140 –140 160 1 10 100 1k 10k 100k 1M 15170 15220 15270 15320 15370 –45 –30 –15 0 15 30 45 60 75 90 FREQUENCY AT V FREQUENCY AT V CC (Hz) CC (Hz) TEMPERATURE (°C) 24301 G23 24301 G24 24301 G25
Conversion Current Sleep Mode Current vs Output Data Rate vs Temperature
1000 6 VREF = VCC FO = GND 900 IN+ = GND CS = VCC IN– = GND VCC = 5V 5 SCK = NC 800 SCK = NC µA) SDO = NC µA) SDO = NC VCC = 5.5V 700 SDI = GND 4 CS = GND 600 FO = EXT OSC 3 VCC = 5V 500 TA = 25°C VCC = 3V V 400 2 CC = 3V SUPPLY CURRENT ( 300 SLEEP MODE CURRENT ( 1 200 VCC = 2.7V 100 0 0 10 20 30 40 50 60 70 80 90 100 –45 –30 –15 0 15 30 45 60 75 90 OUTPUT DATA RATE (READINGS/SEC) TEMPERATURE (°C) 24301 G26 24301 G27 24301f 8