ADS-112 データシートの表示（PDF） - Murata Power Solutions
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ADS-112 Datasheet PDF : 6 Pages
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ADS-112
12-Bit, 1MHz, Low-Power Sampling A/D Converters
UNIPOLAR
SCALE
+FS – 1 LSB
+7/8 FS
+3/4 FS
+1/2 FS
+1/4 FS
+1/8 FS
+1 LSB
0
Table 4. Output Coding
INPUT RANGE
0 to +10V
+9.9976
+8.7500
+7.5000
+5.0000
+2.5000
+1.2500
+0.0024
0.0000
STRAIGHT BIN.
COMP. BINARY
OUTPUT CODING
MSB LSB
MSB
LSB
1111 1111 1111 0000 0000 0000
1110 0000 0000 0001 1111 1111
1100 0000 0000 0011 1111 1111
1000 0000 0000 0111 1111 1111
0100 0000 0000 1011 1111 1111
0010 0000 0000 1101 1111 1111
0000 0000 0001 1111 1111 1110
0000 0000 0000 1111 1111 1111
OFF. BINARY
COMP. OFF. BIN.
INPUT RANGE
±5V
+4.9976
+3.7500
+2.5000
0.0000
–2.5000
–3.7500
–4.9976
–5.0000
BIPOLAR
SCALE
+FS –1 LSB
+3/4FS
+1/2FS
0
–1/2FS
–3/4FS
–FS+1LSB
–FS
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
50 100 150 200 250 300 350 400 450 500
Frequency (kHz)
(fs = 1MHz, fin = 485kHz, Vin = –0.5dB, 4,096-point FFT)
Figure 5. FFT Analysis of ADS-112
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MDA_ADS-112.B01 Page 5 of 6
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