Datasheet

LTC2482
3
2482fc
CONVERTER CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. (Notes 3, 4)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Common Mode Rejection DC 2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
–
= IN
+
≤ V
CC
(Note 5)
l
140 dB
Input Common Mode Rejection, 50Hz ±2% 2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
–
= IN
+
≤ V
CC
(Note 5)
l
140 dB
Input Common Mode Rejection, 60Hz ±2% 2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
–
= IN
+
≤ V
CC
(Note 5)
l
140 dB
Input Normal Mode Rejection, 50Hz ±2% 2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
–
= IN
+
≤ V
CC
(Notes 5, 7)
l
110 120 dB
Input Normal Mode Rejection, 60Hz ±2% 2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
–
= IN
+
≤ V
CC
(Notes 5, 8)
l
110 120 dB
Input Normal Mode Rejection, 50Hz/60Hz ±2% 2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
–
= IN
+
≤ V
CC
(Notes 5, 9)
l
87 dB
Reference Common Mode Rejection DC 2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
–
= IN
+
≤ V
CC
(Note 5)
l
120 140 dB
Power Supply Rejection DC V
REF
= 2.5V, IN
–
= IN
+
= GND 120 dB
Power Supply Rejection, 50Hz ±2% V
REF
= 2.5V, IN
–
= IN
+
= GND (Note 7) 120 dB
Power Supply Rejection, 60Hz ±2% V
REF
= 2.5V, IN
–
= IN
+
= GND (Note 8) 120 dB
ANALOG INPUT AND REFERENCE
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IN
+
Absolute/Common Mode IN
+
Voltage GND – 0.3V V
CC
+ 0.3V V
IN
–
Absolute/Common Mode IN
–
Voltage GND – 0.3V V
CC
+ 0.3V V
FS Full Scale of the Differential Input (IN
+
– IN
–
)
l
0.5V
REF
V
LSB Least Signifi cant Bit of the Output Code
l
FS/2
16
V
IN
Input Differential Voltage Range (IN
+
– IN
–
)
l
–FS +FS V
V
REF
Reference Voltage Range
l
0.1 V
CC
V
C
S
(IN
+
)IN
+
Sampling Capacitance 11 pF
C
S
(IN
–
)IN
–
Sampling Capacitance 11 pF
C
S
(V
REF
)V
REF
Sampling Capacitance 11 pF
I
DC_LEAK
(IN
+
)IN
+
DC Leakage Current Sleep Mode, IN
+
= GND
l
–10 1 10 nA
I
DC_LEAK
(IN
–
)IN
–
DC Leakage Current Sleep Mode, IN
–
= GND
l
–10 1 10 nA
I
DC_LEAK
(V
REF
)V
REF
Leakage Current Sleep Mode, V
REF
= V
CC
l
–100 1 100 nA