Datasheet
LTC2460/LTC2462
3
24602fa
elecTrical characTerisTics
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) (Note 3)
l
16 Bits
Integral Nonlinearity (Note 4)
l
1 10 LSB
Offset Error
l
2 15 LSB
Offset Error Drift 0.02 LSB/°C
Gain Error Includes Contributions of ADC and Internal Reference
l
±0.01 ±0.25 % of FS
Gain Error Drift Includes Contributions of ADC and Internal Reference
C-Grade
I-Grade
l
l
±2
±5
±10
ppm/°C
ppm/°C
Transition Noise 2.2 µV
RMS
Power Supply Rejection DC 80 dB
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
analog inpuTs
The l denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage
l
2.7 5.5 V
I
CC
Supply Current
Conversion
Nap
Sleep
l
l
l
1.5
800
0.2
2.5
1500
2
mA
µA
µA
The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
+
Positive Input Voltage Range LTC2462
l
0 V
REF
V
V
IN
–
Negative Input Voltage Range LTC2462
l
0 V
REF
V
V
IN
Input Voltage Range LTC2460
l
0 V
REF
V
V
OR
+
, V
UR
+
Overrange/Underrange Voltage, IN
+
V
IN
–
= 0.625V (See Figure 3) 8 LSB
V
OR
–
, V
UR
–
Overrange/Underrange Voltage, IN– V
IN
+
= 0.625V (See Figure 3) 8 LSB
C
IN
IN
+
, IN
–
, IN Sampling Capacitance 0.35 pF
I
DC_LEAK(IN
+
, IN
–
, IN)
IN
+
, IN
–
DC Leakage Current (LTC2462)
IN DC Leakage Current (LTC2460)
V
IN
= GND (Note 8)
V
IN
= V
CC
(Note 8)
l
l
–10
–10
1
1
10
10
nA
nA
I
DC_LEAK(IN
–
)
IN
–
DC Leakage Current V
IN
= GND (Note 8)
V
IN
= V
CC
(Note 8)
l
l
–10
–10
1
1
10
10
nA
nA
I
CONV
Input Sampling Current (Note 5) 50 nA
V
REF
Reference Output Voltage
l
1.247 1.25 1.253 V
Reference Voltage Coefficient (Note 11)
C-Grade
I-Grade
l
±2
±5
±10
ppm/°C
ppm/°C
Reference Line Regulation 2.7V ≤ V
CC
≤ 5.5V –90 dB
Reference Short Circuit Current V
CC
= 5.5, Forcing Output to GND
l
35 mA
COMP Pin Short Circuit Current V
CC
= 5.5, Forcing Output to GND
l
200 µA
Reference Load Regulation 2.7V ≤ V
CC
≤ 5.5V, I
OUT
= 100μA Sourcing 3.5 mV/mA
Reference Output Noise Density C
COMP
= 0.1μF, C
REFOUT
= 0.1μF, At f = 1kHz 30 nV/√Hz
power requireMenTs