參數(shù)資料
型號: LTC2487
廠商: Linear Technology Corporation
英文描述: 16-Bit 2-/4-Channel ADC with PGA, Easy Drive and I2C Interface
中文描述: 16位2-/4-Channel型ADC PGA巡回賽,輕松驅(qū)動和I2C接口
文件頁數(shù): 3/32頁
文件大?。?/td> 612K
代理商: LTC2487
LTC2487
2487fa
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
Programmable Gain
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
Programmable Gain
converTer characTerisTics
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
PARAMETER
CONDITIONS
Input Common Mode Rejection DC
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
≤ V
CC
(Note 5)
Input Common Mode Rejection 50Hz ±2%
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
≤ V
CC
(Notes 5, 7)
Input Common Mode Rejection 60Hz ±2%
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
≤ V
CC
(Notes 5, 8)
Input Normal Mode Rejection 50Hz ±2%
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
≤ V
CC
(Notes 5, 7)
Input Normal Mode Rejection 60Hz ±2%
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
≤ V
CC
(Notes 5, 8)
Input Normal Mode Rejection 50Hz/60Hz ±2%
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
≤ V
CC
(Notes 5, 9)
Reference Common Mode Rejection DC
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
≤ V
CC
(Note 5)
Power Supply Rejection DC
V
REF
= 2.5V, IN
+
= IN
= GND
Power Supply Rejection, 50Hz ±2%, 60Hz ±2%
V
REF
= 2.5V, IN
+
= IN
= GND (Notes 7, 8, 9)
The
denotes the specifications which
MIN
16
TYP
MAX
UNITS
Bits
2
1
20
ppm of V
REF
ppm of V
REF
0.5
10
5
μV
nV/°C
32
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
32
0.1
15
15
15
0.6
μV
RMS
27.8
28.0
93.5
28.2
mV
μV/°C
1
256
The
denotes the specifications which apply over the
MIN
16
TYP
MAX
UNITS
Bits
2
1
20
ppm of V
REF
ppm of V
REF
0.2
100
2
mV
nV/°C
32
ppm of V
REF
ppm of V
REF
/°C
ppm of V
REF
ppm of V
REF
/°C
0.1
32
0.1
0.85
μV
RMS
1
128
The
denotes the specifications which apply over the full operating
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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