Datasheet LT6402-12 (Analog Devices) - 8

LT6402-12
TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Output Common Mode Voltage, LT6402-12 Driving Large-Signal Transient Response Overdrive Recovery Time an LTC2249 14-Bit ADC
3.7 4.0 –70 R FILTERED OUTPUTS LOAD = 100Ω PER OUTPUT NO R 3.5 LOAD –75 VOUT = 20MHz 2VP-P 3.2 +OUT 3.0 –80 2.5 HD3 TAGE (V) 2.7 TAGE (V) R 2.0 LOAD = 100Ω TION (dBc) –85 PER OUTPUT 2.2 1.5 HD2 DISTOR –90 OUTPUT VOL OUTPUT VOL 1.0 1.7 –95 0.5 –OUT 1.2 0 –100 TIME (10ns/DIV) TIME (25ns/DIV) 1 1.2 1.4 1.6 1.8 2.0 2.2 2.4 OUTPUT COMMON MODE VOLTAGE (V) 640212 G22 640212 G23 640212 G24
10MHz 8192 Point FFT, LT6402-12 Turn-Off Time Turn-On Time Driving an LTC2249 14-Bit ADC
4.0 4.0 0 RLOAD = 100Ω RLOAD = 100Ω PER OUTPUT –10 8192 POINT FFT 3.5 PER OUTPUT 3.5 f –20 IN = 10MHz, –1dBFS FILTERED OUTPUTS –30 3.0 3.0 –40 +OUT +OUT –50 2.5 2.5 –60 –70 TAGE (V) 2.0 TAGE (V) 2.0 –OUT –OUT –80 VOL 1.5 VOL 1.5 –90 AMPLITUDE (dBFS) –100 1.0 1.0 ENABLE –110 0.5 0.5 –120 ENABLE –130 0 0 –140 TIME (125ns/DIV) TIME (250ns/DIV) 0 2 4 6 8 10 12 14 16 18 20 FREQUENCY (MHz) 640212 G25 640212 G26 640212 G27
20MHz 2-Tone 32768 Point FFT, 20MHz 8192 Point FFT, LT6402-12 25MHz 8192 Point FFT, LT6402-12 LT6402-12 Driving an LTC2249 Driving an LTC2249 14-Bit ADC Driving an LTC2249 14-Bit ADC 14-Bit ADC
0 0 0 –10 8192 POINT FFT –10 8192 POINT FFT –10 32768 POINT FFT f f TONE 1 AT 19.5MHz, –7dBFS –20 IN = 20MHz, –1dBFS –20 IN = 25MHz, –1dBFS –20 FILTERED OUTPUTS FILTERED OUTPUTS TONE 2 AT 20.5MHz, –7dBFS –30 –30 –30 FILTERED OUTPUTS –40 –40 –40 –50 –50 –50 –60 –60 –60 –70 –70 –70 –80 –80 –80 –90 –90 –90 AMPLITUDE (dBFS) AMPLITUDE (dBFS) –100 AMPLITUDE (dBFS) –100 –100 –110 –110 –110 –120 –120 –120 –130 –130 –130 –140 –140 –140 0 2 4 6 8 10 12 14 16 18 20 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) FREQUENCY (MHz) 640212 G28 640212 G29 640212 G30 640212fa 8