Datasheet LTC1286, LTC1298 (Analog Devices) - 6

LTC1286/LTC1298
W U TYPICAL PERFORMANCE CHARACTERISTICS Spurious Free Dynamic Range Attenuation vs vs Frequency S/(N+D) vs Input Level Input Frequency
100 0 80 T 90 A = 25°C 10 70 VCC = VREF = 5V 80 fIN = 1kHz 20 60 fSMPL = 12.5kHz 70 30 60 50 40 50 50 40 40 60 30 30 ATTENUATION (%) 70 20 20 TA = 25°C 80 TA = 25°C VCC = VREF = 5V V SPURIOUS FREE DYNAMIC RANGE (dB) 10 10 f 90 CC = VREF = 5V SMPL = 12.5kHz fSMPL = 12.5kHz SIGNAL-TO-NOISE PLUS DISTORTION (dB) 0 100 1k 10k 100k 1M 0 1 10k 100k 1M 10M –40 –30 –20 –10 0 INPUT FREQUENCY (Hz) INPUT FREQUENCY (Hz) INPUT LEVEL (dB) LTC 1286/98 G27 LTC 1286/98 G26 LT1286/98 G25
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 V –20 CC = VREF = 5V V –20 CC = VREF = 5V CC = 5V (VRIPPLE = 20mV) fIN = 5kHz f1 = 5kHz VREF = 5V fCLK = 200kHz f2 = 6kHz fCLK = 200kHz –40 fSMPL = 12.5kHz –40 fSMPL = 12.5kHz –60 –60 –50 –80 –80 MAGNITUDE (dB) MAGNITUDE (dB) –100 –100 FEEDTHROUGH (dB) –120 –120 –140 –140 –100 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 1 10 100 1000 10000 FREQUENCY (kHz) FREQUENCY (kHz) RIPPLE FREQUENCY (kHz) LTC 1286/98 G21 LTC 1286/98 G22 LTC 1286/98 G24
Maximum Clock Frequency vs Sample and Hold Aquisition Maximum Clock Frequency vs Source Resistance Time vs Source Resistance Supply Voltage
300 10000 300 TA = 25°C TA = 25°C VCC = VREF = 5V VCC = VREF = 5V 250 290 200 280 150 V +INPUT IN 1000 –INPUT 270 100 + R – R SOURCE SOURCE V +INPUT IN CLOCK FREQUENCY (kHz) S&H ACQUISITION TIME (ns) CLOCK FREQUENCY (kHz) 260 50 –INPUT TA = 25°C VCC = VREF = 5V 100 0 250 0.1 1 10 0.1 1 10 100 1000 10000 5 6 7 8 9 SOURCE RESISTANCE (kΩ) SOURCE RESISTANCE (Ω) SUPPLY VOLTAGE (V) LT1286/98 G16 LT1286/98 G12 LT1286/98 G13 6