Datasheet LTC2145-14, LTC2144-14, LTC2143-14 (Analog Devices) - 9

LTC2145-14/ LTC2144-14/LTC2143-14
TYPICAL PERFORMANCE CHARACTERISTICS LTC2145-14: Integral LTC2145-14: Differential LTC2145-14: 64k Point FFT, Nonlinearity (INL) Nonlinearity (DNL) fIN = 5MHz, –1dBFS, 125Msps
2.0 1.0 0 0.8 –10 1.5 –20 0.6 1.0 –30 0.4 –40 0.5 0.2 –50 0 0 –60 –0.2 –70 –0.5 INL ERROR (LSB) DNL ERROR (LSB) AMPLITUDE (dBFS) –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 OUTPUT CODE OUTPUT CODE FREQUENCY (MHz) 21454314 G01 21454314 G02 21454314 G03
LTC2145-14: 64k Point FFT, LTC2145-14: 64k Point FFT, LTC2145-14: 64k Point FFT, fIN = 30MHz, –1dBFS, 125Msps fIN = 70MHz, –1dBFS, 125Msps fIN = 140MHz, –1dBFS, 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 (dBFS) –80 AMPLITUDE (dBFS) –80 AMPLITUDE (dBFS) –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) FREQUENCY (MHz) FREQUENCY (MHz) 21454314 G04 21454314 G05 21454314 G06
LTC2145-14: 64k Point 2-Tone LTC2145-14: SNR vs Input FFT, fIN = 69MHz, 70MHz, LTC2145-14: Shorted Input Frequency, –1dBFS, 125Msps, –1dBFS, 125Msps Histogram 2V Range
0 6000 74 –10 –20 5000 –30 73 SINGLE-ENDED –40 4000 ENCODE –50 –60 3000 72 DIFFERENTIAL COUNT ENCODE –70 SNR (dBFS) AMPLITUDE (dBFS) –80 2000 –90 71 –100 1000 –110 –120 0 70 0 10 20 30 40 50 60 8183 8185 8187 8189 8191 0 50 100 150 200 250 300 FREQUENCY (MHz) OUTPUT CODE INPUT FREQUENCY (MHz) 21454314 G07 21454314 G08 21454314 G09 21454314fa 9