Datasheet

LTC2480
4
2480fd
conVerTer characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications 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)
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
–
= IN
+
≤ V
CC
(Notes 5, 7) (H-Grade)
l
l
110
104
120 dB
dB
Input Normal Mode Rejection
60Hz ±2%
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, 8) (H-Grade)
l
l
110
104
120 dB
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 (Notes 7, 9) 120 dB
Power Supply Rejection, 60Hz ±2% V
REF
= 2.5V, IN
–
= IN
+
= GND (Notes 8, 9) 120 dB
analog inpuT anD reFerence
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications 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
/GAIN V
LSB Least Significant 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
DC Leakage Current Sleep Mode, V
REF
= V
CC
l
–100 1 100 nA
analog inpuTs anD DigiTal ouTpuTs
The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage CS, f
O
, SDI 2.7V ≤ V
CC
≤ 5.5V (Note 16)
l
V
CC
– 0.5 V
V
IL
Low Level Input Voltage CS, f
O
, SDI 2.7V ≤ V
CC
≤ 5.5V
l
0.5 V
V
IH
High Level Input Voltage SCK 2.7V ≤ V
CC
≤ 5.5V (Note 10)
l
V
CC
– 0.5 V
V
IL
Low Level Input Voltage SCK 2.7V ≤ V
CC
≤ 5.5V (Note 10)
l
0.5 V
I
IN
Digital Input Current CS, f
O
, SDI 0V ≤ V
IN
≤ V
CC
l
–10 10 µA