Datasheet LT6402-6 (Analog Devices) - 8

LT6402-6
TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Output Common Mode Voltage, LT6402-6 Driving Overdrive Recovery Time an LTC2249 14-Bit ADC Turn-On Time
4.0 –60 4.0 +OUT FILTERED OUTPUTS RLOAD = 100Ω 3.5 –65 NO RLOAD 3.5 PER OUTPUT VOUT = 20MHz 2VP-P 3.0 –70 3.0 +OUT 2.5 –75 2.5 R 2.0 LOAD = 100Ω –80 2.0 PER OUTPUT HD2 –OUT 1.5 –85 VOLTAGE (V) 1.5 DISTORTION (dBc) OUTPUT VOLTAGE (V) 1.0 –90 HD3 1.0 0.5 –OUT –95 0.5 ENABLE 0 –100 0 TIME (25ns/DIV) 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 TIME (125ns/DIV) OUTPUT COMMON MODE VOLTAGE (V) 64026 G22 64026 G23 64026 G24
10MHz 8192 Point FFT, LT6402-6 20MHz 8192 Point FFT, LT6402-6 Turn-Off Time Driving an LTC2249 14-Bit ADC Driving an LTC2249 14-Bit ADC
4.0 0 0 RLOAD = 100Ω PER OUTPUT –10 8192 POINT FFT –10 8192 POINT FFT 3.5 f f –20 IN = 10MHz, –1dBFS –20 IN = 20MHz, –1dBFS FILTERED OUTPUTS FILTERED OUTPUTS –30 –30 3.0 –40 –40 +OUT 2.5 –50 –50 –60 –60 2.0 –70 –70 –OUT –80 –80 VOLTAGE (V) 1.5 –90 –90 AMPLITUDE (dBFS) AMPLITUDE (dBFS) –100 –100 1.0 ENABLE –110 –110 0.5 –120 –120 –130 –130 0 –140 –140 TIME (250ns/DIV) 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 FREQUENCY (MHz) FREQUENCY (MHz) 64026 G25 64026 G26 64026 G27
20MHz 2-Tone 32768 Point FFT, 25MHz 8192 Point FFT, LT6402-6 LT6402-6 Driving an LTC2249 Driving an LTC2249 14-Bit ADC 14-Bit ADC
0 0 –10 8192 POINT FFT –10 32768 POINT FFT f TONE 1 AT 19.5MHz, –7dBFS –20 IN = 25MHz, –1dBFS –20 FILTERED OUTPUTS TONE 2 AT 20.5MHz, –7dBFS –30 –30 FILTERED OUTPUTS –40 –40 –50 –50 –60 –60 –70 –70 –80 –80 –90 –90 AMPLITUDE (dBFS) –100 AMPLITUDE (dBFS) –100 –110 –110 –120 –120 –130 –130 –140 –140 0 2 4 6 8 10 12 14 16 18 20 0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 FREQUENCY (MHz) FREQUENCY (MHz) 64026 G28 64026 G29 64026fa 8