HI5810 查看數據表（PDF） - Intersil
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HI5810 Datasheet PDF : 12 Pages
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HI5810
Total Harmonic Distortion
The total harmonic distortion (THD) is the ratio of the RMS
sum of the second through sixth harmonic components to
the fundamental RMS signal for a specified input and
sampling frequency.
Spurious-Free Dynamic Range
The spurious-free dynamic range (SFDR) is the ratio of the
fundamental RMS amplitude to the RMS amplitude of the
next largest spur or spectral component. If the harmonics
are buried in the noise floor it is the largest peak.
Total Harmonic Power (2nd - 6th Harmonic)
THD = 10Log
Sinewave Signal Power
Sinewave Signal Power
SFDR = 10Log
Highest Spurious Signal Power
TABLE 2. CODE TABLE
CODE
DESCRIPTION
INPUT
VOLTAGE†
VREF+ = 4.608V
VREF- = 0V
(V)
BINARY OUTPUT CODE
MSB
LSB
DECIMAL
COUNT D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Full Scale (FS)
4.6069
4095
1
1 1 1 11 1 1 11 1
1
FS - 1 LSB
3/4 FS
1/2 FS
1/4 FS
1 LSB
4.6058
3.4560
2.3040
1.1520
0.001125
4094
3072
2048
1024
1
1
1 1 1 11 1 1 11 1
0
1
1 0 0 00 0 0 00 0
0
1
0 0 0 00 0 0 00 0
0
0
1 0 0 00 0 0 00 0
0
0
0 0 0 00 0 0 00 0
1
Zero
0
0
0
0 0 0 00 0 0 00 0
0
†The voltages listed above represent the ideal lower transition of each output code shown as a function of the reference voltage.
+5V
VREF
10µF
4.7µF
0.1µF
0.01µF
0.1µF
0.001µF
ANALOG
INPUT
VAA+
VDD
VREF+
D1... 1
D0
DRDY
OEM
VIN
OEL
STRT
CLK
VREF- VAA-
VSS
0.1µF
4.7µF
OUTPUT
DATA
1.5MHz CLOCK
FIGURE 17. GROUND AND SUPPLY DECOUPLING
6-1787
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