参数资料
型号: ADS-112/883
元件分类: ADC
英文描述: 1-CH 12-BIT FLASH METHOD ADC, PARALLEL ACCESS, CDIP24
封装: METAL SEALED, CERAMIC, DDIP-24
文件页数: 5/6页
文件大小: 73K
代理商: ADS-112/883
ADS-112
5
Table 4. Output Coding
UNIPOLAR
INPUT RANGE
OUTPUT CODING
INPUT RANGE
BIPOLAR
SCALE
0 to +10V
MSB LSB
MSB
LSB
±5V
SCALE
+FS – 1 LSB
+9.9976
1111 1111 1111
0000 0000 0000
+4.9976
+FS –1 LSB
+7/8 FS
+8.7500
1110 0000 0000
0001 1111
1111
+3.7500
+3/4FS
+3/4 FS
+7.5000
1100 0000 0000
0011 1111
1111
+2.5000
+1/2FS
+1/2 FS
+5.0000
1000 0000 0000
0111
1111
0.0000
0
+1/4 FS
+2.5000
0100 0000 0000
1011 1111
1111
–2.5000
–1/2FS
+1/8 FS
+1.2500
0010 0000 0000
1101 1111
1111
–3.7500
–3/4FS
+1 LSB
+0.0024
0000 0000 0001
1111
1110
–4.9976
–FS+1LSB
0
0.0000
0000 0000 0000
1111
–5.0000
–FS
STRAIGHT BIN.
COMP. BINARY
OFF. BINARY
COMP. OFF. BIN.
Figure 5. FFT Analysis of ADS-112
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)
A
m
p
li
tu
d
e
R
e
la
ti
v
e
to
F
u
ll
S
c
a
le
(d
B
)
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