AD7466/AD7467/AD7468
Rev. C | Page 13 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
DYNAMIC PERFORMANCE CURVES
Figure 6, Figure 7, and Figure 8 show typical FFT plots for the
AD7466, AD7467, and AD7468, respectively, at a 100 kSPS
sample rate and a 30 kHz input tone.
Figure 9 shows the signal-to-noise and distortion ratio
performance vs. input frequency for various supply voltages
while sampling at 100 kSPS with an SCLK frequency of 3.4 MHz
for the AD7466.
Figure 10 shows the signal-to-noise ratio (SNR) performance
vs. input frequency for various supply voltages while sampling
at 100 kSPS with an SCLK frequency of 3.4 MHz for the
AD7466.
Figure 11 shows the total harmonic distortion (THD) vs. analog
input signal frequency for various supply voltages while sam-
pling at 100 kSPS with an SCLK frequency of 3.4 MHz for
the AD7466.
Figure 12 shows the THD vs. analog input frequency for
different source impedances with a supply voltage of 2.7 V, an
SCLK frequency of 3.4 MHz, and sampling at a rate of 100 kSPS
for the AD7466 (see the
Analog Input section).
DC ACCURACY CURVES
Figure 13 and Figure 14 show typical INL and DNL perform-
ance for the AD7466.
POWER REQUIREMENT CURVES
Figure 15 shows the supply current vs. supply voltage for the
AD7466 at −40°C, +25°C, and +85°C, with SCLK frequency of
3.4 MHz and a sampling rate of 100 kSPS.
Figure 16 shows the maximum current vs. supply voltage for the
AD7466 with different SCLK frequencies.
Figure 17 shows the shutdown current vs. supply voltage.
Figure 18 shows the power consumption vs. throughput rate for
the AD7466 with an SCLK of 3.4 MHz and different supply
voltages. See the
Power Consumption section for more details.
02643-007
25
5
SNR (dB)
–15
–35
–55
–75
–95
–115
0 5 10 15 20 25 30 35 40 45 50
FREQUENCY (kHz)
8192 POINT FFT
V
DD
= 1.8V
f
SAMPLE
= 100kSPS
f
IN
= 30kHz
SINAD = 70.82dB
THD = –84.18dB
SFDR = –85.48dB
Figure 6. AD7466 Dynamic Performance at 100 kSPS
15
–5
SNR (dB)
–25
–45
–65
–85
–105
0 5 10 15 20 25 30 35 40 45 50
FREQUENCY (kHz)
8192 POINT FFT
V
DD
= 1.8V
f
SAMPLE
= 100kSPS
f
IN
= 30kHz
SINAD = 61.51dB
THD = –80.61dB
SFDR = –82.10dB
02643-008
Figure 7. AD7467 Dynamic Performance at 100 kSPS
