
LTC2446/LTC2447
13
24467fa
APPLICATIO S I FOR ATIO
WU
UU
Table 4. LTC2446/LTC2447 Speed/Resolution Selection
CONVERSION RATE
INTERNAL EXTERNAL
RMS
9MHz
10.24MHz
NOISE
ENOB
OSR3
OSR2
OSR1
OSR0
TWOX
CLOCK
LTC2446 LTC2447
LTC2446
LTC2447
OSR
LATENCY
00000
Keep Previous Speed/Resolution
00010
3.52kHz
4kHz
23
V23V
17
64
None
00100
1.76kHz
2kHz
4.4
V
3.5
V
20.1
128
None
00110
880Hz
1kHz
2.8
V2V
20.8
21.3
256
None
01000
440Hz
500Hz
2
V
1.4
V
21.3
21.8
512
None
01010
220Hz
250Hz
1.4
V1V
21.8
22.4
1024
None
01100
110Hz
125Hz
1.1
V
750nV
22.1
22.9
2048
None
01110
55Hz
62.5Hz
720nV
510nV
22.7
23.4
4096
None
10000
27.5Hz
31.25Hz
530nV
375nV
23.2
24
8192
None
10010
13.75Hz
15.625Hz
350nV
250nV
23.8
24.4
16384
None
11110
6.875Hz
7.8125Hz
280nV
200nV
24.1
24.6
32768
none
00001
Keep Previous Speed/Resolution
00011
7.04kHz
8kHz
23
V23V
17
64
1 Cycle
00101
3.52kHz
4kHz
4.4
V
3.5
V
20.1
128
1 Cycle
00111
1.76kHz
2kHz
2.8
V2V
20.8
21.3
256
1 Cycle
01001
880Hz
1kHz
2
V
1.4
V
21.3
21.8
512
1 Cycle
01011
440Hz
500Hz
1.4
V1V
21.8
22.4
1024
1 Cycle
01101
220Hz
250Hz
1.1
V
750nV
22.1
22.9
2048
1 Cycle
01111
110Hz
125Hz
720nV
510nV
22.7
23.4
4096
1 Cycle
10001
55Hz
62.5Hz
530nV
375nV
23.2
24
8192
1 Cycle
10011
27.5Hz
31.25Hz
350nV
250nV
23.8
24.4
16384
1 Cycle
11111
13.75Hz
15.625Hz
280nV
200nV
24.1
24.6
32768
1 Cycle