Datasheet LTC1594, LTC1598 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 8-Channel, Micropower Sampling 12-Bit Serial I/O A/D Converter |
| 页数 / 页 | 24 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Attenuation vs Input Frequency. 4096 … |
| 文件格式/大小 | PDF / 246 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Attenuation vs Input Frequency. 4096 Point FFT Plot. Intermodulation Distortion
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LTC1594/LTC1598
W U TYPICAL PERFORMANCE CHARACTERISTICS Attenuation vs Input Frequency 4096 Point FFT Plot Intermodulation Distortion
0 0 0 T T A = 25°C A = 25°C 10 V V –20 CC = VREF = 5V –20 CC = VREF = 5V f f IN = 5kHz 1 = 5kHz 20 f f CLK = 320kHz 2 = 6kHz 30 –40 f – 40 f SMPL = 12.5kHz SMPL = 12.5kHz 40 –60 – 60 50 –80 –80 60 MAGNITUDE (dB) MAGNITUDE (dB) ATTENUATION (%) 70 –100 –100 80 TA = 25°C –120 –120 90 VCC = VREF = 5V fSMPL = 16.8kHz 100 –140 –140 1 10 100 1000 10000 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 INPUT FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) 1594/98 G13 1594/98 G14 1594/98 G15
Power Supply Feedthrough Maximum Clock Frequency Sample-and-Hold Acquisition Time vs Ripple Frequency vs Source Resistance vs Source Resistance
0 360 10000 TA = 25°C TA = 25°C VCC = 5V (VRIPPLE = 20mV) VCC = VREF = 5V V 300 REF = 5V fCLK = 320kHz 240 V + INPUT IN – 50 180 1000 COM 120 – + FEEDTHROUGH (dB) RSOURCE RSOURCE CLOCK FREQUENCY (kHz) V + INPUT IN S & H ACQUISITION TIME (ns) 60 T COM A = 25°C VCC = VREF = 5V –100 0 100 1 10 100 1000 10000 0.1 1 10 0.1 1 10 100 1000 10000 RIPPLE FREQUENCY (kHz) SOURCE RESISTANCE (kΩ) SOURCE RESISTANCE (Ω) 1594/98 G16 1594/98 G17 1594/98 G18
Minimum Clock Frequency for Input Channel Leakage Current 0.1LSB Error vs Temperature vs Temperature
320 1000 VCC = VREF = 5V VCC = 5V VREF = 5V 100 240 10 160 ON CHANNEL 1 80 LEAKAGE CURRENT (nA) OFF CHANNEL CLOCK FREQUENCY (kHz) 0.1 0 0.01 – 55 – 35 –15 5 25 45 65 85 – 60 – 40 –20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) TEMPERATURE (°C) 1594/98 G19 1594/98 G20 15948fb 6
W U TYPICAL PERFORMANCE CHARACTERISTICS Attenuation vs Input Frequency 4096 Point FFT Plot Intermodulation Distortion
0 0 0 T T A = 25°C A = 25°C 10 V V –20 CC = VREF = 5V –20 CC = VREF = 5V f f IN = 5kHz 1 = 5kHz 20 f f CLK = 320kHz 2 = 6kHz 30 –40 f – 40 f SMPL = 12.5kHz SMPL = 12.5kHz 40 –60 – 60 50 –80 –80 60 MAGNITUDE (dB) MAGNITUDE (dB) ATTENUATION (%) 70 –100 –100 80 TA = 25°C –120 –120 90 VCC = VREF = 5V fSMPL = 16.8kHz 100 –140 –140 1 10 100 1000 10000 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 INPUT FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) 1594/98 G13 1594/98 G14 1594/98 G15
Power Supply Feedthrough Maximum Clock Frequency Sample-and-Hold Acquisition Time vs Ripple Frequency vs Source Resistance vs Source Resistance
0 360 10000 TA = 25°C TA = 25°C VCC = 5V (VRIPPLE = 20mV) VCC = VREF = 5V V 300 REF = 5V fCLK = 320kHz 240 V + INPUT IN – 50 180 1000 COM 120 – + FEEDTHROUGH (dB) RSOURCE RSOURCE CLOCK FREQUENCY (kHz) V + INPUT IN S & H ACQUISITION TIME (ns) 60 T COM A = 25°C VCC = VREF = 5V –100 0 100 1 10 100 1000 10000 0.1 1 10 0.1 1 10 100 1000 10000 RIPPLE FREQUENCY (kHz) SOURCE RESISTANCE (kΩ) SOURCE RESISTANCE (Ω) 1594/98 G16 1594/98 G17 1594/98 G18
Minimum Clock Frequency for Input Channel Leakage Current 0.1LSB Error vs Temperature vs Temperature
320 1000 VCC = VREF = 5V VCC = 5V VREF = 5V 100 240 10 160 ON CHANNEL 1 80 LEAKAGE CURRENT (nA) OFF CHANNEL CLOCK FREQUENCY (kHz) 0.1 0 0.01 – 55 – 35 –15 5 25 45 65 85 – 60 – 40 –20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) TEMPERATURE (°C) 1594/98 G19 1594/98 G20 15948fb 6