MAX1463 Datasheet, PDF (34/49 Pages) Maxim Integrated Products – Low-Power Two-Channel Sensor Signal Processor

Low-Power Two-Channel Sensor
Signal Processor
Table 16. ADC Resolution (RESn[2:0],
where n = 1, 2, or T)
RESn[2:0]
000
001
010
011
100
101
110
RESOLUTION (BITS)
9
10
12
13
14
15
16
NO. OF F_ADC
CLOCKS PER
CONVERSION
256
320
512
640
800
1280
2048
Table 17. ADC Conversion Time
(RESn[2:0] and CLKn[2:0], where
n = 1, 2, or T)
RESOLUTION
(BITS)
9
10
12
13
14
15
16
CONVERSION TIME (ms)
CLKn[2:0] = CLKn[2:0] = CLKn[2:0] =
000
100
111
0.256
4.096
32.768
0.320
5.120
40.960
0.512
8.192
65.536
0.640
10.240
81.920
0.800
12.800
102.400
1.280
20.480
163.840
2.048
32.768
262.140
Table 18. Coarse-Offset DAC (3 Bits Plus
Sign, n = 1, 2, or T)
COARSE OFFSET ADDED AS % OF ADC
REFERENCE INPUT^*
COn[3:0]
PGAn =
0.94–60
PGAn =
73–105
PGAn =
133–240
00000 TO
01000
01010 TO
10000
10100 TO
11110
0111
+135
0110
+116
0101
+98
0100
+79
0011
+60
0010
+42
0001
+23
0000
+5
1000
+12
1001
-7
1010
-26
1011
-44
1100
-64
1101
-81
1110
-100
1111
-117
*Measured at the ADC input.
+266
+229
+193
+158
+117
+79
+44
+9
+23
-15
-50
-87
-130
-166
-202
-238
+481
+410
+341
+277
+210
+140
+76
+8
+33
-36
-100
-169
-239
-305
-374
-495
Table 19. ADC Bias Current (BIASn[2:0],
where n = 1, 2, or T)
BIASn[2:0]
000
001
010
011
100
101
110
111
FRACTION
OF FULL
BIAS
CURRENT
1/8
2/8
3/8
4/8
5/8
6/8
7/8
8/8
MAXIMUM
ADC CLOCK
FREQUENCY
(kHz)
125
250
250
500
500
500
1 MHz
1 MHz
CLKn[2:0]
011
011
010
010
001
001
000
000
Table 20. ADC Reference Voltage Source
(REFn[1:0], where n = 1 or 2)
REFn[1:0]
00
01
10
ADC REFERENCE
V_DD
V_REF (external)
VBG x 4 (pseudo 5V)
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