Datasheet LTC2508-32 (Analog Devices) - 7

LTC2508-32
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VDD = 2.5V, OVDD = 2.5V, VCM = 2.5V, REF = 5V, fSMPL = 1Msps, DF = 256, Filtered Output, unless otherwise noted. Integral Nonlinearity Integral Nonlinearity vs Input Voltage vs Input Voltage DC Histogram, DF = 256
2.0 3.5 1000 ARBITRARY DRIVE σ = 0.095ppm 1.5 IN+/IN– SWEPT 0 TO 5V 800 1.0 1.8 0.5 600 0 0 COUNTS –0.5 400 INL ERROR (ppm) INL ERROR (ppm) –1.0 –1.8 200 –1.5 –2.0 –3.5 0 –5 –2.5 0 2.5 5 –5 –2.5 0 2.5 5 –0.4 –0.2 0 0.2 0.4 INPUT VOLTAGE (V) INPUT VOLTAGE (V) OUTPUT CODE (ppm) 250832 G01 250832 G03 250832 G04
DC Histogram, DF = 1024 DC Histogram, DF = 4096 DC Histogram, DF = 16384
1000 1000 1000 σ = 0.055ppm σ = 0.03ppm σ = 0.02ppm 800 800 800 600 600 600 COUNTS 400 COUNTS 400 COUNTS 400 200 200 200 0 0 0 –0.4 –0.2 0 0.2 0.4 –0.4 –0.2 0 0.2 0.4 –0.4 –0.2 0 0.2 0.4 OUTPUT CODE (ppm) OUTPUT CODE (ppm) OUTPUT CODE (ppm) 250832 G05 250832 G06 250832 G07
128k Point FFT fSMPL = 1Msps, 128k Point FFT fSMPL = 1Msps, 32k Point FFT fSMPL = 1Msps, fIN = 200Hz, DF = 256 fIN = 50Hz, DF = 1024 fIN = 10Hz, DF = 4096
0 0 0 DR = 131dB DR = 136dB DR = 141dB –20 –20 –20 –40 –40 –40 –60 –60 –60 –80 –80 –80 –100 –100 –100 –120 –120 –120 AMPLITUDE (dBFS) –140 AMPLITUDE (dBFS) –140 AMPLITUDE (dBFS) –140 –160 –160 –160 –180 –180 –180 –200 –200 –200 0 0.5 1 1.5 2 0 122 244 366 488 0 30 61 91 122 FREQUENCY (kHz) FREQUENCY (Hz) FREQUENCY (Hz) 250832 G08 250832 G09 250832 G09 250832fc For more information www.linear.com/LTC2508-32 7