
LTC2492
2
2492fd
ELECTRICAL CHARACTERISTICS (NORMAL SPEED)
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC) ...................................– 0.3V to 6V
Analog Input Voltage
(CH0 to CH3, COM) ................. – 0.3V to (VCC + 0.3V)
REF+, REF– .................................. – 0.3V to (VCC + 0.3V)
Digital Input Voltage..................... – 0.3V to (VCC + 0.3V)
Digital Output Voltage .................. – 0.3V to (VCC + 0.3V)
Operating Temperature Range
LTC2492C ................................................ 0°C to 70°C
LTC2492I..............................................– 40°C to 85°C
Storage Temperature Range...................– 65°C to 150°C
(Notes 1, 2)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
REF–
REF+
VCC
CH3
CH2
CH1
CH0
fO
SDI
SCK
CS
SDO
GND
COM
DE PACKAGE
14-LEAD (4mm
3mm) PLASTIC DFN
15
TJMAX = 125°C, θJA = 37°C/W
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
The ● denotes the specications which
apply over the full operating temperature range, otherwise specications are at TA = 25°C. (Notes 3, 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution (No Missing Codes)
0.1V ≤ VREF ≤ VCC, –FS ≤ VIN ≤ +FS (Note 5)
24
Bits
Integral Nonlinearity
5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V (Note 6)
2.7V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V (Note 6)
●
2
1
10
ppm of VREF
Offset Error
2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 14)
●
0.5
2.5
μV
Offset Error Drift
2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC
10
nV/°C
Positive Full-Scale Error
2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF
●
25
ppm of VREF
Positive Full-Scale Error Drift
2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF
0.1
ppm of VREF/°C
Negative Full-Scale Error
2.5V ≤ VREF ≤ VCC, IN+ = 0.25VREF, IN– = 0.75VREF
●
25
ppm of VREF
Negative Full-Scale Error Drift
2.5V ≤ VREF ≤ VCC, IN+ = 0.25VREF, IN– = 0.75VREF
0.1
ppm of VREF/°C
Total Unadjusted Error
5V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V
5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V
2.7V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V
15
ppm of VREF
Output Noise
5.5V < VCC < 2.7V, 2.5V ≤ VREF ≤ VCC,
GND ≤ IN+ = IN– ≤ VCC (Note 13)
0.6
μVRMS
Internal PTAT Signal
TA = 27°C (Note 14)
27.8
28.0
28.2
mV
Internal PTAT Temperature Coefcient
93.5
μV/°C
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2492CDE#PBF
LTC2492CDE#TRPBF
2492
14-Lead (4mm
× 3mm) Plastic DFN
0°C to 70°C
LTC2492IDE#PBF
LTC2492IDE#TRPBF
2492
14-Lead (4mm
× 3mm) Plastic DFN
–40°C to 85°C
Consult LTC Marketing for parts specied with wider operating temperature ranges. *The temperature grade is identied by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specications, go to: http://www.linear.com/tapeandreel/
PIN CONFIGURATION
ORDER INFORMATION