參數(shù)資料
型號(hào)： LTC2480
廠商： Linear Technology Corporation
英文描述： 16-Bit ADC with Easy Drive
中文描述： 16位ADC的易道
文件頁數(shù)： 36/40頁
文件大小： 535K
代理商： LTC2480
36
LTC2480
2480f
APPLICATIU
W
U
U
Figure 37. Measured Input Normal Mode Rejection vs
Input Frequency with Input Perturbation of 150% Full
Scale (60Hz Notch)
INPUT FREQUENCY (Hz)
0
15
30
45
60
75
90
105 120 135 150 165 180 195 210 225 240
N
2480 F37
0
–20
–40
–60
–80
–100
–120
V
CC
= 5V
V
REF
= 5V
V
INCM
= 2.5V
T
A
°
C
V
IN(P-P)
= 5V
V
= 7.5V
(150% OF FULL SCALE)
Figure 38. Measured Input Normal Mode Rejection vs
Input Frequency with Input Perturbation of 150% Full
Scale (50Hz Notch)
INPUT FREQUENCY (Hz)
0
N
2480 F38
0
–20
–40
–60
–80
–100
–120
V
CC
= 5V
V
REF
= 5V
V
IN(CM)
= 2.5V
T
A
°
C
V
IN(P-P)
= 5V
V
IN(P-P)
= 7.5V
(150% OF FULL SCALE)
12.5
25
37.5
50
62.5
75
87.5 100 112.5 125 137.5 150 162.5 175 187.5 200
Figure 39. Input Normal Mode Rejection 2x Speed Mode
Figure 40. Input Normal Mode Rejection 2x Speed Mode
Figure 41. Input Normal Mode Rejection vs Input Frequency,
2x Speed Mode and 50Hz/60Hz Mode
Figure 42. Input Normal Mode Rejection 2x Speed Mode
INPUT SIGNAL FREQUENCY (f
N
)
I
2480 F39
0
–20
–40
–60
–80
–100
–1200
f
N
2f
3f
4f
5f
6f
N
7f
N
8f
N
INPUT SIGNAL FREQUENCY (f
N
)
I
2480 F48
0
–20
–40
–60
–80
–100
–120
250
248
252 254 256 258
260 262
264
INPUT FREQUENCY (Hz)
0
N
50
100 125
225
2480 F41
25
75
150 175 200
0
–20
–40
–60
–80
–100
–120
V
CC
= 5V
V
REF
= 5V
V
INCM
= 2.5V
V
IN(P-P)
= 5V
F
O
= GND
T
A
= 25
°
C
MEASURED DATA
CALCULATED DATA
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
48
–70
–80
–90
–100
–110
–120
–130
–140
54
58
2480 F42
50
52
56
60
62
N
NO AVERAGE
WITH
RUNNING
AVERAGE
mode. Typical measured values of the normal mode
rejection of the LTC2480 operating with the internal oscil-
lator and 2x speed mode is shown in Figure 41.
When the LTC2480 is configured in 2x speed mode, by
performing a running average, a SINC
1
notch is combined
with the SINC
4
digital filter, yielding the normal mode
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LTC2480IDD 16-Bit ADC with Easy Drive
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