Datasheet LTC1594L, LTC1598L (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 4- and 8-Channel, 3V Micropower Sampling 12-Bit Serial I/O A/D Converters |
| 页数 / 页 | 24 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Power Supply Feedthrough. 4096 Point … |
| 文件格式/大小 | PDF / 370 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Power Supply Feedthrough. 4096 Point FFT Plot. Intermodulation Distortion
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LTC1594L/LTC1598L
W U TYPICAL PERFORMANCE CHARACTERISTICS Power Supply Feedthrough 4096 Point FFT Plot Intermodulation Distortion vs Ripple Frequency
0 0 0 TA = 25°C TA = 25°C TA = 25°C V – 10 CC = 2.7V VCC = 2.7V VCC = 2.7V (VRIPPLE = 1mV) – 20 VREF = 2.5V – 20 VREF = 2.5V – 20 VREF = 2.5V fIN = 3.05kHz f1 = 2.05kHz fCLK = 200kHz f f2 = 3.05kHz – 30 – 40 CLK = 120kHz f – 40 SMPL = 7.5kHz fSMPL = 7.5kHz – 40 – 60 – 60 – 50 – 60 MAGNITUDE (dB) – 80 MAGNITUDE (dB) – 80 FEEDTHROUGH (dB) – 70 – 80 – 100 – 100 – 90 – 120 – 120 –100 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 1k 10k 100k 1M 10M FREQUENCY (kHz) FREQUENCY (kHz) RIPPLE FREQUENCY (Hz) 1594L/98L G13 1594L/98L G15 1594L/98L G14
Maximum Clock Frequency Sample-and-Hold Acquisition Time vs Source Resistance vs Source Resistance
200 10000 T T A = 25°C A = 25°C 190 V V CC = 2.7V CC = 2.7V V V REF = 2.5V REF = 2.5V 180 170 160 1000 150 V +INPUT IN R + SOURCE CLOCK FREQUENCY (kHz) 140 V +INPUT IN –INPUT S & H ACQUISITION TIME (ns) – 130 RSOURCE –INPUT 120 100 10 100 1000 1 10 100 1000 10000 SOURCE RESISTANCE (Ω) SOURCE RESISTANCE (Ω) 1594L/98L G16 1594L/98L G17
Minimum Clock Frequency for Input Channel Leakage Current 0.1LSB Error vs Temperature vs Temperature
120 1000 VCC = 2.7V VCC = 2.7V VREF = 2.5V VREF = 2.5V 100 100 80 10 60 1 40 ON CHANNEL CLOCK FREQUENCY (kHz) LEAKAGE CURRENT (nA) OFF CHANNEL 0.1 20 2 0 0.01 0 10 20 30 40 50 60 70 –55 –35 –15 5 25 45 65 85 105 125 TEMPERATURE (°C) TEMPERATURE (°C) 1594L/98L G18 1594L/98L G19 15948lfb 6
W U TYPICAL PERFORMANCE CHARACTERISTICS Power Supply Feedthrough 4096 Point FFT Plot Intermodulation Distortion vs Ripple Frequency
0 0 0 TA = 25°C TA = 25°C TA = 25°C V – 10 CC = 2.7V VCC = 2.7V VCC = 2.7V (VRIPPLE = 1mV) – 20 VREF = 2.5V – 20 VREF = 2.5V – 20 VREF = 2.5V fIN = 3.05kHz f1 = 2.05kHz fCLK = 200kHz f f2 = 3.05kHz – 30 – 40 CLK = 120kHz f – 40 SMPL = 7.5kHz fSMPL = 7.5kHz – 40 – 60 – 60 – 50 – 60 MAGNITUDE (dB) – 80 MAGNITUDE (dB) – 80 FEEDTHROUGH (dB) – 70 – 80 – 100 – 100 – 90 – 120 – 120 –100 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 1k 10k 100k 1M 10M FREQUENCY (kHz) FREQUENCY (kHz) RIPPLE FREQUENCY (Hz) 1594L/98L G13 1594L/98L G15 1594L/98L G14
Maximum Clock Frequency Sample-and-Hold Acquisition Time vs Source Resistance vs Source Resistance
200 10000 T T A = 25°C A = 25°C 190 V V CC = 2.7V CC = 2.7V V V REF = 2.5V REF = 2.5V 180 170 160 1000 150 V +INPUT IN R + SOURCE CLOCK FREQUENCY (kHz) 140 V +INPUT IN –INPUT S & H ACQUISITION TIME (ns) – 130 RSOURCE –INPUT 120 100 10 100 1000 1 10 100 1000 10000 SOURCE RESISTANCE (Ω) SOURCE RESISTANCE (Ω) 1594L/98L G16 1594L/98L G17
Minimum Clock Frequency for Input Channel Leakage Current 0.1LSB Error vs Temperature vs Temperature
120 1000 VCC = 2.7V VCC = 2.7V VREF = 2.5V VREF = 2.5V 100 100 80 10 60 1 40 ON CHANNEL CLOCK FREQUENCY (kHz) LEAKAGE CURRENT (nA) OFF CHANNEL 0.1 20 2 0 0.01 0 10 20 30 40 50 60 70 –55 –35 –15 5 25 45 65 85 105 125 TEMPERATURE (°C) TEMPERATURE (°C) 1594L/98L G18 1594L/98L G19 15948lfb 6