Datasheet LTC2421, LTC2422 (Analog Devices) - 7

LTC2421/LTC2422
W U TYPICAL PERFOR A CE CHARACTERISTICS Conversion Current vs Temperature Sleep Current vs Temperature Rejection vs Frequency at VCC
230 30 0 VCC = 4.1V 220 VIN = 0V V –20 CC = 5.5V TA = 25°C F 210 O = 0 µA) µA) VCC = 2.7V 20 –40 200 VCC = 4.1V VCC = 5V 190 –60 180 10 REJECTION (dB) –80 V SUPPLY CURRENT ( CC = 2.7V 170 SUPPLY CURRENT ( –100 160 150 0 –120 – 55 –30 –5 20 45 70 95 120 –55 –30 –5 20 45 70 95 120 1 100 10k 1M TEMPERATURE (°C) TEMPERATURE (°C) FREQUENCY AT VCC (Hz) 24212 G19 24212 G20 24212 G23
Rejection vs Frequency at VCC Rejection vs Frequency at VCC Rejection vs Frequency at VIN
–20 0 0 VCC = 4.1V VCC = 4.1V VCC = 5V VIN = 0V VIN = 0V VREF = 5V T –20 T –20 –40 A = 25°C A = 25°C VIN = 2.5V FO = 0 FO = 0 FO = 0 –40 –40 –60 –60 –60 –80 REJECTION (dB) REJECTION (dB) –80 REJECTION (dB) –80 –100 –100 –100 –120 –120 –120 1 50 100 150 200 250 15200 15250 15300 15350 15400 15450 15500 1 50 100 150 200 250 FREQUENCY AT VCC (Hz) FREQUENCY AT VCC (Hz) FREQUENCY AT VIN (Hz) 24212 G21 24212 G22 24212 G24
Rejection vs Frequency at VIN Rejection vs Frequency at VIN Rejection vs Frequency at VIN
–60 0 0 VCC = 5V –70 VREF = 5V –20 V –20 IN = 2.5V F –80 O = 0 –40 –40 –90 –60 –100 –60 –80 –110 REJECTION (dB) REJECTION (dB) –80 REJECTION (dB) –100 –120 –100 –130 –120 SAMPLE RATE = 15.36kHz ± 2% –140 –120 –140 –12 –8 –4 0 4 8 12 15100 15200 15300 15400 15500 0 fS/2 fS INPUT FREQUENCY DEVIATION FROM NOTCH FREQUENCY (%) FREQUENCY AT VIN (Hz) INPUT FREQUENCY 24212 G25 24212 G26 24212 G27 24212f 7