Datasheet

ADS7852
SBAS111C
5
TYPICAL CHARACTERISTICS
At T
A
= +25°C, V
SS
= +5V, f
SAMPLE
= 500kHz, f
CLK
= 16 • f
SAMPLE
, and internal reference, unless otherwise specified.
SPECTRAL PERFORMANCE
(4096 Point FFT, f
IN
= 49.561kHz, –0.5dB)
Frequency (kHz)
0 50 100 150 200 250
Amplitude (dB)
0
–20
–40
–60
–80
–100
–120
SPECTRAL PERFORMANCE
(4096 Point FFT, f
IN
= 100.7081kHz, –0.5dB)
Frequency (kHz)
0 50 100 150 200 250
Amplitude (dB)
0
–20
–40
–60
–80
–100
–120
SPECTRAL PERFORMANCE
(4096 Point FFT, f
IN
= 199.5851kHz, –0.5dB)
Frequency (kHz)
0 50 100 150 200 250
Amplitude (dB)
0
–20
–40
–60
–80
–100
–120
SPECTRAL PERFORMANCE
(4096 Point FFT, f
IN
= 247.1921kHz, –0.5dB)
Frequency (kHz)
0 50 100 150 200 250
Amplitude (dB)
0
–20
–40
–60
–80
–100
–120
CHANGE IN SPURIOUS FREE DYNAMIC RANGE AND
TOTAL HARMONIC DISTORTION vs TEMPERATURE
Temperature (°C)
–50 –25 0 25 50 75 100
SFDR Delta from +25°C (dB)
THD Delta from +25°C (dB)
1.0
0.5
0.0
–0.5
–1.0
–1.0
–0.5
0.0
0.5
1.0
SFDR
THD
(1)
NOTE: (1) First nine harmonics
of the input frequency
f
IN
= 49.6kHz,–0.5dB
CHANGE IN SIGNAL-TO-NOISE RATIO AND
SIGNAL-TO-(NOISE+DISTORTION) vs TEMPERATURE
Temperature (°C)
–50 –25 0 25 50 75 100
SNR and SINAD Delta from +25°C (dB)
0.4
0.3
0.2
0.1
0.0
–0.1
–0.2
–0.3
–0.4
–0.5
SINAD
SNR
f
IN
= 49.6kHz,–0.5dB