MAX1464 Datasheet, PDF (33/47 Pages) Maxim Integrated Products – Low-Power, Low-Noise Multichannel Sensor Signal Processor

Low-Power, Low-Noise Multichannel
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, Where n = 1, 2, or T)
COARSE OFFSET ADDED AS % OF ADC REFERENCE*
COn
ADC REFERENCE EQUAL TO V_DD or 2 x V_REF
ADC REFERENCE EQUAL TO 4 x V_BG
[3:0] _{PGAn = 1 TO 59 PGAn = 71 TO 114 PGAn = 137 TO 220 PGAn = 1 TO 59 PGAn = 71 TO 114 PGAn = 137 TO 220}
00000 TO 01000 01010 TO 10000 10100 TO 11110 00000 TO 01000 01010 TO 10000 10100 TO 11110
0111
+147
+291
+578
+137
+270
+539
0110
+124
+245
+487
+116
+229
+456
0101
+104
+206
+409
+97
+192
+383
0100
+82
+162
+322
+76
+151
+300
0011
+64
0010
+41
+126
+81
+251
+160
+59
+116
+38
+75
+231
+148
0001
+21
+41
+83
+19
+38
+76
0000
-1
-2.4
-4
-1.7
-3.3
-7
1000
-10
-19
-38
-4.6
-9
-19
1001
-30
-61
-120
-26
-51
-101
1010
-50
-100
-199
-44
-87
-174
1011
-73
1100
-91
-145
-181
-287
-360
-65
-129
-82
-163
-257
-326
1101
-113
-225
-447
-104
-205
-409
1110
-133
-264
-526
-122
-242
-482
1111
-156
-309
-614
-143
-283
-565
*Measured at the ADC input.
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