Datasheet

LTC2444/LTC2445/
LTC2448/LTC2449
3
2444589fc
For more information www.linear.com/LTC2444
orDer inForMaTion
elecTrical characTerisTics
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) 0.1V ≤ V
REF
≤ V
CC
, –0.5 • V
REF
≤ V
IN
≤ 0.5 • V
REF
, (Note 5)
l
24 Bits
Integral Nonlinearity V
CC
= 5V, REF
+
= 5V, REF
–
= GND, V
INCM
= 2.5V, (Note 6)
REF
+
= 2.5V, REF
–
= GND, V
INCM
= 1.25V, (Note 6)
l
5
3
15 ppm of V
REF
ppm of V
REF
Offset Error 2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
GND ≤ IN
+
= IN
–
≤ V
CC
(Note 12)
l
2.5 5 µV
Offset Error Drift 2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
GND ≤ IN
+
= IN
–
≤ V
CC
20 nV/°C
Positive Full-Scale Error REF
+
= 5V, REF
–
= GND, IN
+
= 3.75V, IN
–
= 1.25V
REF
+
= 2.5V, REF
–
= GND, IN
+
= 1.875V, IN
–
= 0.625V
l
l
10
10
50
50
ppm of V
REF
ppm of V
REF
Positive Full-Scale Error Drift 2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
IN
+
= 0.75 • REF
+
, IN
–
= 0.25 • REF
+
0.2 ppm of V
REF
/°C
Negative Full-Scale Error REF
+
= 5V, REF
–
= GND, IN
+
= 1.25V, IN
–
= 3.75V
REF
+
= 2.5V, REF
–
= GND, IN
+
= 0.625V, IN
–
= 1.875V
l
l
10
10
50
50
ppm of V
REF
ppm of V
REF
Negative Full-Scale Error Drift 2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
IN
+
= 0.25 • REF
+
, IN
–
= 0.75 • REF
+
0.2 ppm of V
REF
/°C
Total Unadjusted Error 5V ≤ V
CC
≤ 5.5V, REF
+
= 2.5V, REF
–
= GND, V
INCM
= 1.25V
5V ≤ V
CC
≤ 5.5V, REF
+
= 5V, REF
–
= GND, V
INCM
= 2.5V
REF
+
= 2.5V, REF
–
= GND, V
INCM
= 1.25V, (Note 6)
15
15
15
ppm of V
REF
ppm of V
REF
ppm of V
REF
Input Common Mode Rejection DC 2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
GND ≤ IN
–
= IN
+
≤ V
CC
120 dB
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Notes 3, 4)
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2444CUHF#PBF LTC2444CUHF#TRPBF 2444 38-Lead Plastic QFN 0°C to 70°C
LTC2444IUHF#PBF LTC2444IUHF#TRPBF 2444 38-Lead Plastic QFN –40°C to 85°C
LTC2445CUHF#PBF LTC2445CUHF#TRPBF 2445 38-Lead Plastic QFN 0°C to 70°C
LTC2445IUHF#PBF LTC2445IUHF#TRPBF 2445 38-Lead Plastic QFN –40°C to 85°C
LTC2448CUHF#PBF LTC2448CUHF#TRPBF 2448 38-Lead Plastic QFN 0°C to 70°C
LTC2448IUHF#PBF LTC2448IUHF#TRPBF 2448 38-Lead Plastic QFN –40°C to 85°C
LTC2449CUHF#PBF LTC2449CUHF#TRPBF 2449 38-Lead Plastic QFN 0°C to 70°C
LTC2449IUHF#PBF LTC2449IUHF#TRPBF 2449 38-Lead Plastic QFN –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.
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/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
http://www.linear.com/product/LTC2444#orderinfo