at TA = 25°C,
AVDD1 = 5 V, AVSS = 0 V, AVDD2 = 2.5 V, IOVDD = 1.8 V, fCLK = 8.192 MHz
(4.096 MHz low-power mode), VREFP = 4.096 V, VREFN = 0 V, PGA
gain = 1, VCM = 2.5 V, fDATA = 500 SPS (unless otherwise
noted)
Shorted input, PGA gain = 1 |
Figure 6-9 High-Power Mode FFT Spectrum
Shorted input, PGA gain = 1, VREF = 2.5 V,
AVDD1 = 3.3 V |
Figure 6-11 High-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, PGA gain = 1 |
Figure 6-13 High-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, buffer operation |
|
Figure 6-15 High-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, PGA gain = 8 |
Figure 6-17 High-Power Mode FFT Spectrum
Shorted input, PGA gain = 1 |
Figure 6-19 Mid-Power Mode FFT Spectrum
Shorted input, PGA gain = 1, VREF = 2.5 V,
AVDD1 = 3.3 V |
Figure 6-21 Mid-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –20
dBFS, PGA gain = 1 |
|
Figure 6-23 Mid-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, PGA gain = 8 |
Figure 6-25 Mid-Power Mode FFT Spectrum
Shorted input, PGA gain = 1 |
Figure 6-27 Low-Power Mode FFT Spectrum
Shorted input, PGA gain = 1, VREF = 2.5 V,
AVDD1 = 3.3 V |
Figure 6-29 Low-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –20
dBFS, PGA gain = 1 |
|
Figure 6-31 Low-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, PGA gain = 8 |
Figure 6-33 Low-Power Mode FFT Spectrum
AIN1
= fIN = 31.25 Hz, –0.5-dBFS signal, AIN2 =
shorted |
Figure 6-35 Channel-to-Channel CrosstalkFigure 6-37 Dynamic Range vs PGA Gain Figure 6-39 Offset Error Distribution Figure 6-41 Gain
Error Distribution Figure 6-43 Gain
Drift Distribution Figure 6-45 Gain
Match Distribution
VREF = 2.5 V, AVDD1 = 3.3 V,
fIN = 31.25 Hz, VIN = –0.5
dBFS |
Figure 6-47 Mid-Power Mode THD vs PGA
Gain
VREF = 4.096 V, AVDD1 = 5 V,
fIN = 31.25 Hz, VIN = –0.5
dBFS |
Figure 6-49 High-Power Mode THD vs PGA
Gain
VREF = 4.096 V, AVDD1 = 5 V,
fIN = 31.25 Hz, VIN = –0.5
dBFS |
Figure 6-51 Low-Power Mode THD vs PGA
Gain
VREF = 4.096 V, AVDD1 = 5 V,
fIN = 31.25 Hz, VIN = –0.5
dBFS |
Figure 6-53 Low-Power Mode THD vs
Input FrequencyFigure 6-55 PGA Input Current Noise
Distribution Figure 6-57 Reference Input Current vs
Temperature Figure 6-59 CMRR vs Common-Mode Input
Frequency Figure 6-61 AVDD1 Current
Distribution Figure 6-63 AVDD1 Current vs
Temperature Figure 6-65 AVDD2 Current vs
Temperature Figure 6-67 IOVDD Current vs Data
Rate
Shorted input, PGA gain = 8 |
Figure 6-10 High-Power Mode FFT SpectrumFigure 6-12 High-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –20
dBFS, PGA gain = 1 |
Figure 6-14 High-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, PGA gain = 2, VREF = 2.5 V, AVDD1 = 3.3
V, 2048 data points |
Figure 6-16 High-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –20
dBFS, PGA gain = 8 |
Figure 6-18 High-Power Mode FFT Spectrum
Shorted input, PGA gain = 8 |
Figure 6-20 Mid-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, PGA gain = 1 |
Figure 6-22 Mid-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, PGA gain = 2, VREF = 2.5 V, AVDD1 = 3.3
V, 2048 data points |
Figure 6-24 Mid-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –20
dBFS, PGA gain = 8 |
Figure 6-26 Mid-Power Mode FFT Spectrum
Shorted input, PGA gain = 8 |
Figure 6-28 Low-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, PGA gain = 1 |
Figure 6-30 Low-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –0.5
dBFS, PGA gain = 2, VREF = 2.5 V, AVDD1 = 3.3
V, 2048 data points |
Figure 6-32 Low-Power Mode FFT Spectrum
fIN = 31.25 Hz, VIN = –20
dBFS, PGA gain = 8 |
Figure 6-34 Low-Power Mode FFT SpectrumFigure 6-36 Dynamic Range vs PGA Gain Figure 6-38 Dynamic Range vs PGA Gain Figure 6-40 Offset Drift Distribution Figure 6-42 Gain
Error Distribution Figure 6-44 Gain
Drift Distribution
VREF = 2.5 V, AVDD1 = 3.3 V,
fIN = 31.25 Hz, VIN = –0.5
dBFS |
Figure 6-46 High-Power Mode THD vs PGA Gain
VREF = 2.5 V, AVDD1 = 3.3 V,
fIN = 31.25 Hz, VIN = –0.5
dBFS |
Figure 6-48 Low-Power Mode THD vs PGA
Gain
VREF = 4.096 V, AVDD1 = 5 V,
fIN = 31.25 Hz, VIN = –0.5
dBFS |
Figure 6-50 Mid-Power Mode THD vs PGA
Gain
VREF = 4.096 V, AVDD1 = 5 V,
fIN = 31.25 Hz, VIN = –0.5
dBFS |
Figure 6-52 High- and Mid-Power Mode
THD vs Input FrequencyFigure 6-54 PGA Input Current vs Input
Voltage
High- and mid-power modes |
|
Figure 6-56 Buffer Input Current vs
Input VoltageFigure 6-58 Reference Input Current
Distribution Figure 6-60 AVDD1 Current
Distribution Figure 6-62 AVDD1 Current vs
Temperature Figure 6-64 AVDD2 Current
Distribution Figure 6-66 PSRR vs Power-Supply
Frequency