Datasheet

6ADS7835
®
TYPICAL PERFORMANCE CURVES (Cont.)
At T
A
= +25°C, +V
CC
= +5V, f
SAMPLE
= 500kHz, f
CLK
= 16 • f
SAMPLE
, and internal +2.5V reference, unless otherwise specified.
Input Frequency (kHz)
75
73
71
69
67
65
63
SNR and SINAD (dB)
1 10 100 1000
SIGNAL-TO-NOISE and
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY
SINAD
SNR
CHANGE IN SIGNAL-TO-NOISE and
SIGNAL-TO-(NOISE+DISTORTION)
vs TEMPERATURE
20–40 80 100–20 0 40
Temperature (°C)
SNR and SINAD Deltas from +25°C (dB)
0.5
0.4
0.3
0.2
0.1
0.0
–0.1
–0.2
–0.3
–0.4
–0.5
60
f
IN
= 10kHz, –0.2dB
SINAD
SNR
2.0
1.5
1.0
0.5
0.0
–0.5
–1.0
–1.5
–2.0
–40 –20
0 20 40 60 80 100
f
IN
= 10kHz, –0.2dB
SFDR
THD∗
∗First nine harmonics
of the input frequency
Temperature (°C)
SFDR and THD Deltas from +25°C (dB)
CHANGE IN SPURIOUS FREE DYNAMIC RANGE
and TOTAL HARMONIC DISTORTION
vs TEMPERATURE
1.0
0.8
0.6
0.4
0.2
0.0
–0.2
0 100 200 300 400 500 600 700
Sample Rate (kHz)
Delta from 500kHz (mA)
CHANGE IN BIPOLAR OFFSET ERROR
vs SAMPLE RATE
Input Frequency (kHz)
90
85
80
75
70
65
SFDR and THD (dB)
1 10 100 1000
THD
✻
SFDR
✻
First nine harmonics
of the input frequency
SPURIOUS FREE DYNAMIC RANGE and
TOTAL HARMONIC DISTORTION
vs INPUT FREQUENCY