Datasheet LTC2255, LTC2254 (Analog Devices) - 6

LTC2255/LTC2254
W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2255: 8192 Point FFT, LTC2255: Typical INL, LTC2255: Typical DNL, fIN = 5MHz, –1dB, 2V Range, 2V Range, 125Msps 2V Range, 125Msps 125Msps
2.0 1.0 0 –10 0.8 1.5 –20 0.6 1.0 –30 0.4 –40 0.5 0.2 –50 0 0 –60 –70 –0.2 –0.5 INL ERROR (LSB) AMPLITUDE (dB) DNL ERROR (LSB) –80 –0.4 –1.0 –90 –0.6 –100 –1.5 –0.8 –110 –2.0 –1.0 –120 0 4096 8192 12288 16384 0 4096 8192 12288 16384 0 10 20 30 40 50 60 CODE 22554 G01 CODE 22554 G02 FREQUENCY (MHz) 22554 G03
LTC2255: 8192 Point FFT, LTC2255: 8192 Point FFT, LTC2255: 8192 Point FFT, fIN = 30MHz, –1dB, 2V Range, fIN = 70MHz, –1dB, 2V Range, fIN = 140MHz, –1dB, 2V Range, 125Msps 125Msps 125Msps
0 0 0 –10 –10 –10 –20 –20 –20 –30 –30 –30 –40 –40 –40 –50 –50 –50 –60 –60 –60 –70 –70 –70 AMPLITUDE (dB) –80 AMPLITUDE (dB) –80 AMPLITUDE (dB) –80 –90 –90 –90 –100 –100 –100 –110 –110 –110 –120 –120 –120 0 10 20 30 40 50 60 0 10 20 30 40 50 60 0 10 20 30 40 50 60 FREQUENCY (MHz) 22554 G04 FREQUENCY (MHz) 22554 G05 FREQUENCY (MHz) 22554 G06
LTC2255: 8192 Point 2-Tone FFT, f LTC2255: Grounded Input LTC2255: SNR vs Input Frequency, IN = 28.2MHz and 26.8MHz, –1dB, 2V Range, 125Msps Histogram, 125Msps –1dB, 2V Range, 125Msps
0 25000 75 –10 74 20331 –20 20000 18639 73 –30 72 –40 –50 15000 71 –60 11975 70 COUNT –70 10000 SNR (dBFS) 69 AMPLITUDE (dB) –80 6939 68 –90 5000 67 –100 3684 2727 66 –110 704 3 79 419 26 1 –120 0 65 0 10 20 30 40 50 60 8181 8183 8185 8187 8189 8191 0 50 100 150 200 250 300 350 FREQUENCY (MHz) 22554 G07 CODE 22554 G08 INPUT FREQUENCY (MHz) 33554 G09 22554fa 6