Datasheet

LTC2439-1
3
24391fa
PARAMETER CONDITIONS MIN TYP MAX UNITS
Total Unadjusted Error 5V ≤ V
CC
≤ 5.5V, REF
+
= 2.5V, REF
–
= GND, V
INCM
= 1.25V 0.20 LSB
5V ≤ V
CC
≤ 5.5V, REF
+
= 5V, REF
–
= GND, V
INCM
= 2.5V 0.20 LSB
REF
+
= 2.5V, REF
–
= GND, V
INCM
= 1.25V, (Note 6)
Output Noise 5V ≤ V
CC
≤ 5.5V, REF
+
= 5V, V
REF
– = GND, 1 µV
RMS
GND ≤ IN
–
= IN
+
≤ 5V (Note 12)
Input Common Mode Rejection DC 2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND, ● 130 140 dB
GND ≤ IN
–
= IN
+
≤ V
CC
(Note 5)
Input Common Mode Rejection 2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND, ● 140 dB
49Hz to 61.2Hz GND ≤ IN
–
= IN
+
≤ V
CC
, (Note 5)
Input Normal Mode Rejection (Note 5) ● 87 dB
49Hz to 61.2Hz
Reference Common Mode 2.5V ≤ REF
+
≤ V
CC
, GND ≤ REF
–
≤ 2.5V, ● 130 140 dB
Rejection DC V
REF
= 2.5V, IN
–
= IN
+
= GND (Note 5)
Power Supply Rejection, DC REF
+
= 2.5V, REF
–
= GND, IN
–
= IN
+
= GND 120 dB
Power Supply Rejection, REF
+
= 2.5V, REF
–
= GND, IN
–
= IN
+
= GND 120 dB
Simultaneous 50Hz/60Hz ±2%
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Notes 3, 4)
CO VERTER CHARACTERISTICS
U
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IN
+
Absolute/Common Mode IN
+
Voltage ● GND – 0.3 V
CC
+ 0.3 V
IN
–
Absolute/Common Mode IN
–
Voltage ● GND – 0.3 V
CC
+ 0.3 V
V
IN
Input Differential Voltage Range ● –V
REF
/2 V
REF
/2 V
(IN
+
– IN
–
)
REF
+
Absolute/Common Mode REF
+
Voltage ● 0.1 V
CC
V
REF
–
Absolute/Common Mode REF
–
Voltage ● GND V
CC
– 0.1 V
V
REF
Reference Differential Voltage Range ● 0.1 V
CC
V
(REF
+
– REF
–
)
C
S
(IN
+
)IN
+
Sampling Capacitance 18 pF
C
S
(IN
–
)IN
–
Sampling Capacitance 18 pF
C
S
(REF
+
)REF
+
Sampling Capacitance 18 pF
C
S
(REF
–
)REF
–
Sampling Capacitance 18 pF
I
DC_LEAK
(IN
+
)IN
+
DC Leakage Current CS = V
CC
= 5.5V, IN
+
= GND ● –100 1 100 nA
I
DC_LEAK
(IN
–
)IN
–
DC Leakage Current CS = V
CC
= 5.5V, IN
–
= 5V ● –100 1 100 nA
I
DC_LEAK
(REF
+
)REF
+
DC Leakage Current CS = V
CC
= 5.5V, REF
+
= 5V ● –100 1 100 nA
I
DC_LEAK
(REF
–
)REF
–
DC Leakage Current CS = V
CC
= 5.5V, REF
–
= GND ● –100 1 100 nA
Off Channel to On Channel Isolation DC 140 dB
(R
IN
= 100Ω) 1Hz 140 dB
f
S
= 15,3600Hz 140 dB
t
OPEN
MUX Break-Before-Make Interval 2.7V ≤ V
CC
≤ 5.5V 100 ns
I
S(OFF)
Channel Off Leakage Current Channel at V
CC
and GND ● –100 1 100 nA
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
A ALOG I PUT A D REFERE CE
UU
U
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