ADS-112 Datel, Inc., ADS-112 Datasheet - Page 5

• Manufacturer Part Number: ADS-112
• Description: 1mhz, Low-power ADC: 12-bit
• Manufacturer: Datel, Inc.

®
UNIPOLAR
+FS – 1 LSB
+7/8 FS
+3/4 FS
+1/2 FS
+1/4 FS
+1/8 FS
+1 LSB
SCALE
0
–100
–110
–120
–130
–10
–20
–30
–40
–50
–60
–70
–80
–90
INPUT RANGE
0
®
0
0 to +10V
+9.9976
+8.7500
+7.5000
+5.0000
+2.5000
+1.2500
+0.0024
0.0000
50
(fs = 1MHz, fin = 485kHz, Vin = –0.5dB, 4,096-point FFT)
MSB LSB
1111 1111 1111
1110 0000 0000
1100 0000 0000
1000 0000 0000
0100 0000 0000
0010 0000 0000
0000 0000 0001
0000 0000 0000
100
STRAIGHT BIN.
OFF. BINARY
Figure 5. FFT Analysis of ADS-112
OUTPUT CODING
150
Table 4. Output Coding
200
Frequency (kHz)
5
MSB
0000 0000 0000
0001 1111 1111
0011 1111 1111
0111 1111 1111
1011 1111 1111
1101 1111 1111
1111 1111 1110
1111 1111 1111
250
COMP. BINARY
COMP. OFF. BIN.
300
LSB
350
INPUT RANGE
400
+4.9976
+3.7500
+2.5000
–2.5000
–3.7500
–4.9976
–5.0000
0.0000
±5V
450
+FS –1 LSB
500
–FS+1LSB
BIPOLAR
+3/4FS
+1/2FS
–1/2FS
–3/4FS
SCALE
–FS
0
ADS-112