Datasheet

LTC2470/LTC2472
3
24702fb
For more information www.linear.com/LTC2470
elecTrical characTerisTics
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution 16 Bits
Integral Nonlinearity Output Rate 208sps (Note 4)
Output Rate 833sps (Note 4)
l
l
2
8
8.5
16
LSB
LSB
Offset Error
l
±1 ±2.5 mV
Offset Error Drift 0.05 LSB/°C
Gain Error
l
±0.01 ±0.25 % of FS
Gain Error Drift
l
0.15 LSB/°C
Transition Noise 3 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
IN
+
Positive Input Voltage Range LTC2472
l
0 V
REF
V
V
IN
–
Negative Input Voltage Range LTC2472
l
0 V
REF
V
V
IN
Input Voltage Range LTC2470
l
0 V
REF
V
V
OR
+
, V
UR
+
Overrange/Underrange Voltage, IN
+
V
IN
–
= 0.625V 8 LSB
V
OR
–
, V
UR
–
Overrange/Underrange Voltage, IN– V
IN
+
= 0.625V 8 LSB
C
IN
IN
+
, IN
–
, IN Sampling Capacitance 0.35 pF
I
DC_LEAK(IN
+
, IN
–
, IN)
IN
+
, IN
–
DC Leakage Current (LTC2472)
IN DC Leakage Current (LTC2470)
V
IN
= GND (Note 5)
V
IN
= V
CC
(Note 5)
l
l
–10
–10
±1
±1
10
10
nA
nA
I
CONV
Input Sampling Current (Note 8) 50 nA
V
REF
Reference Output Voltage
l
1.247 1.25 1.253 V
Reference Voltage Coefficient (Note 9)
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 =
1ksps
30 nV/√Hz
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2472CMS#PBF LTC2472CMS#TRPBF 2472 12-Lead Plastic MSOP 0°C to 70°C
LTC2472IMS#PBF LTC2472IMS#TRPBF 2472 12-Lead Plastic MSOP –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear
.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/