LTC2497 Linear Technology, LTC2497 Datasheet - Page 3

• Manufacturer Part Number: LTC2497
• Description: 16-Bit 8-/16-Channel ADC
• Manufacturer: Linear Technology

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ELECTRICAL CHARACTERISTICS
CONVERTER CHARACTERISTICS
ANALOG INPUT AND REFERENCE
temperature range, otherwise specifi cations are at T
temperature range, otherwise specifi cations are at T
temperature range, otherwise specifi cations are at T
PARAMETER
Resolution (No Missing Codes)
Integral Nonlinearity
Offset Error
Offset Error Drift
Positive Full-Scale Error
Positive Full-Scale Error Drift
Negative Full-Scale Error
Negative Full-Scale Error Drift
Total Unadjusted Error
Output Noise
PARAMETER
Input Common Mode Rejection DC
Input Normal Mode Rejection 50Hz/60Hz ±2%
Reference Common Mode Rejection DC
Power Supply Rejection DC
Power Supply Rejection, 50Hz ±2%
Power Supply Rejection, 60Hz ±2%
SYMBOL
IN
IN
V
FS
LSB
REF
REF
V
CS(IN
CS(IN
CS(V
I
DC_LEAK(IN
IN
REF
+
–
+
–
REF
+
–
)
)
)
+
)
PARAMETER
Absolute/Common Mode IN
(IN
Absolute/Common Mode IN
(IN
Input Differential Voltage Range (IN
Full Scale of the Differential Input (IN
Least Signifi cant Bit of the Output Code
Absolute/Common Mode REF
Absolute/Common Mode REF
Reference Voltage Range (REF
IN
IN
V
IN
REF
+
–
+
+
–
Sampling Capacitance
Sampling Capacitance
DC Leakage Current
Corresponds to the Selected Positive Input Channel)
Corresponds to the Selected Negative Input Channel)
Sampling Capacitance
CONDITIONS
0.1V ≤ V
5V ≤ V
2.7V ≤ V
2.5V ≤ V
2.5V ≤ V
2.5V ≤ V
2.5V ≤ V
2.5V ≤ V
2.5V ≤ V
5V ≤ V
5V ≤ V
2.7V ≤ V
2.7V < V
GND ≤ IN
+
–
Voltage
Voltage
+
–
+
CC
CC
CC
Voltage
Voltage
– REF
REF
CC
REF
REF
REF
REF
REF
REF
CC
CC
+
≤ 5.5V, V
≤ 5.5V, V
≤ 5.5V, V
CONDITIONS
2.5V ≤ V
2.5V ≤ V
2.5V ≤ V
V
V
V
= IN
≤ 5.5V, V
≤ 5.5V, V
< 5.5V, 2.5V ≤ V
+
REF
REF
REF
≤ V
≤ V
≤ V
≤ V
≤ V
≤ V
≤ V
+
– IN
–
– IN
)
–
CC
CC
CC
CC
CC
CC
CC
= 2.5V, IN
= 2.5V, IN
= 2.5V, IN
≤ V
–
, –FS ≤ V
, GND ≤ IN
, GND ≤ IN
, IN
, IN
, IN
, IN
)
REF
REF
REF
–
REF
REF
REF
A
A
A
)
CC
REF
REF
= 25°C. (Notes 3, 4)
+
+
+
+
= 25°C. (Note 3)
= 25°C. (Note 3)
= 5V, V
= 2.5V, V
= 5V, V
≤ V
≤ V
≤ V
= 0.75V
= 0.75V
= 0.25V
= 0.25V
(Note 12)
= 2.5V, V
= 2.5V, V
+
+
+
CC
CC
CC
IN
= IN
= IN
= IN
The
REF
The
+
+
, GND ≤ IN
, GND ≤ IN
, GND ≤ IN
≤ +FS (Note 5)
IN(CM)
IN(CM)
= IN
= IN
REF
REF
REF
REF
IN(CM)
≤ V
–
–
–
●
●
The
IN(CM)
IN(CM)
= GND
= GND (Notes 7, 9)
= GND (Notes 8, 9)
CONDITIONS
Sleep Mode, IN
, IN
, IN
, IN
, IN
–
–
CC
denotes the specifi cations which apply over the full operating
denotes the specifi cations which apply over the full operating
= 2.5V (Note 6)
= 2.5V
≤ V
≤ V
,
–
–
–
–
= 1.25V
●
= 0.25V
= 0.25V
= 0.75V
= 0.75V
CC
CC
+
+
+
= 1.25V (Note 6)
= 1.25V
denotes the specifi cations which apply over the full operating
= IN
= IN
= IN
(Note 13)
–
–
–
≤ V
≤ V
≤ V
REF
REF
REF
REF
+
CC
CC
CC
= GND
(Note 5)
(Notes 5, 9)
(Note 5)
●
●
●
●
●
●
●
●
●
●
●
MIN
GND – 0.3V
GND – 0.3V
●
●
●
16
0.5V
FS/2
GND
MIN
–FS
–10
0.1
0.1
REF
MIN
140
120
16
87
TYP
0.5
0.1
0.1
0.6
10
15
15
15
2
1
TYP
11
11
11
TYP
140
120
120
120
1
MAX
2.5
20
32
32
LTC2497
REF
V
V
CC
CC
MAX
+
MAX
+FS
V
V
10
+ 0.3V
+ 0.3V
CC
– 0.1V
CC
ppm of V
ppm of V
ppm of V
ppm of V
ppm of V
ppm of V
ppm of V
ppm of V
ppm of V
µV
UNITS
UNITS
UNITS
REF
REF
nV/°C
3
2497f
RMS
Bits
REF
REF
REF
/°C
REF
/°C
REF
REF
REF
µV
dB
dB
dB
dB
dB
dB
nA
pF
pF
pF
V
V
V
V
V
V
V