參數(shù)資料
型號(hào)： LTC2493CDEPBF
廠商： Linear Technology Corporation
英文描述： 24-Bit 2-/4-Channel ADC with Easy Drive Input Current Cancellation and I2C Interface
中文描述： 24位2-/4-Channel ADC，具有易于驅(qū)動(dòng)的輸入電流取消和I2C接口
文件頁(yè)數(shù)： 3/32頁(yè)
文件大小： 588K
代理商： LTC2493CDEPBF
LTC2493
2493fa
elecTrical characTerisTics (norMal speeD)
apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. (Notes 3, 4)
PARAMETER
CONDITIONS
Resolution (No Missing Codes)
0.1V ≤ V
REF
≤ V
CC
, –FS ≤ V
IN
≤ +FS (Note 5)
Integral Nonlinearity
5V ≤ V
CC
≤ 5.5V, V
REF
= 5V, V
IN(CM)
= 2.5V (Note 6)
2.7V ≤ V
CC
≤ 5.5V, V
REF
= 2.5V, V
IN(CM)
= 1.25V (Note 6)
Offset Error
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Note 13)
Offset Error Drift
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
Positive Full-Scale Error
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.75V
REF
, IN
–
= 0.25V
REF
Positive Full-Scale Error Drift
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.75V
REF
, IN
–
= 0.25V
REF
Negative Full-Scale Error
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.25V
REF
, IN
–
= 0.75V
REF
Negative Full-Scale Error Drift
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.25V
REF
, IN
–
= 0.75V
REF
Total Unadjusted Error
5V ≤ V
CC
≤ 5.5V, V
REF
= 2.5V, V
IN(CM)
= 1.25V
5V ≤ V
CC
≤ 5.5V, V
REF
= 5V, V
IN(CM)
= 2.5V
2.7V ≤ V
CC
≤ 5.5V, V
REF
= 2.5V, V
IN(CM)
= 1.25V
Output Noise
2.7V < V
CC
< 5.5V, 2.5V ≤ V
REF
≤ V
CC
,
GND ≤ IN
+
= IN
–
≤ V
CC
(Note 12)
Internal PTAT Signal
T
A
= 27°C (Note 13)
Internal PTAT Temperature Coefficient
The
●
denotes the specifications which
MIN
24
TYP
MAX
UNITS
Bits
●
●
2
1
10
ppm of V
REF
ppm of V
REF
●
0.5
10
2.5
μV
nV/°C
●
25
ppm of V
REF
ppm of V
REF
/°C
ppm of V
REF
ppm of V
REF
/°C
ppm of V
REF
ppm of V
REF
ppm of V
REF
0.1
●
25
0.1
15
15
15
0.6
μV
RMS
27.8
28.0
93.5
28.2
mV
μV/°C
elecTrical characTerisTics (2x speeD)
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Notes 3, 4)
PARAMETER
CONDITIONS
Resolution (No Missing Codes)
0.1V ≤ V
REF
≤ V
CC
, –FS ≤ V
IN
≤ +FS (Note 5)
Integral Nonlinearity
5V ≤ V
CC
≤ 5.5V, V
REF
= 5V, V
IN(CM)
= 2.5V (Note 6)
2.7V ≤ V
CC
≤ 5.5V, V
REF
= 2.5V, V
IN(CM)
= 1.25V (Note 6)
Offset Error
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Note 13)
Offset Error Drift
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
Positive Full-Scale Error
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.75V
REF
, IN
–
= 0.25V
REF
Positive Full-Scale Error Drift
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.75V
REF
, IN
–
= 0.25V
REF
Negative Full-Scale Error
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.25V
REF
, IN
–
= 0.75V
REF
Negative Full-Scale Error Drift
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.25V
REF
, IN
–
= 0.75V
REF
Output Noise
5V ≤ V
CC
≤ 5.5V, V
REF
= 5V, GND ≤ IN
+
= IN
–
≤ V
CC
The
●
denotes the specifications which apply over the
MIN
24
TYP
MAX
UNITS
Bits
●
2
1
10
ppm of V
REF
ppm of V
REF
●
0.2
100
2
mV
nV/°C
●
25
ppm of V
REF
ppm of V
REF
/°C
ppm of V
REF
ppm of V
REF
/°C
0.1
●
25
0.1
0.85
μV
RMS
converTer characTerisTics
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
PARAMETER
Input Common Mode Rejection DC
Input Common Mode Rejection 50Hz ±2%
Input Common Mode Rejection 60Hz ±2%
Input Normal Mode Rejection 50Hz ±2%
Input Normal Mode Rejection 60Hz ±2%
Input Normal Mode Rejection 50Hz/60Hz ±2%
Reference Common Mode Rejection DC
Power Supply Rejection DC
Power Supply Rejection, 50Hz ±2%, 60Hz ±2%
The
●
denotes the specifications which apply over the full operating
CONDITIONS
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Note 5)
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Notes 5, 7)
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Notes 5, 8)
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Notes 5, 7)
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Notes 5, 8)
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Notes 5, 9)
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Note 5)
V
REF
= 2.5V, IN
+
= IN
–
= GND
V
REF
= 2.5V, IN
+
= IN
–
= GND (Notes 7, 8, 9)
MIN
140
140
140
110
110
87
120
TYP
MAX
UNITS
●
dB
dB
dB
dB
dB
dB
dB
dB
dB
●
●
●
120
120
●
●
●
140
120
120
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