Datasheet

2
LTC2420
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) 0.1V ≤ V
REF
≤ V
CC
, (Note 5) ● 20 Bits
Integral Nonlinearity V
REF
= 2.5V (Note 6) ● 4 10 ppm of V
REF
V
REF
= 5V (Note 6) ● 8 20 ppm of V
REF
Integral Nonlinearity (Fast Mode) V
REF
= 5V, V
REF
= 2.5V, 100 Samples/Second, f
O
= 2.048MHz ● 40 250 ppm of V
REF
Offset Error 2.5V ≤ V
REF
≤ V
CC
● 0.5 10 ppm of V
REF
Offset Error (Fast Mode) 2.5V < V
REF
< 5V, 100 Samples/Second, f
O
= 2.048MHz 3 ppm of V
REF
Offset Error Drift 2.5V ≤ V
REF
≤ V
CC
0.04 ppm of V
REF
/°C
Full-Scale Error 2.5V ≤ V
REF
≤ V
CC
● 4 10 ppm of V
REF
Full-Scale Error (Fast Mode) 2.5V < V
REF
< 5V, 100 Samples/Second, f
O
= 2.048MHz 10 ppm of V
REF
Full-Scale Error Drift 2.5V ≤ V
REF
≤ V
CC
0.04 ppm of V
REF
/°C
Total Unadjusted Error V
REF
= 2.5V 8 ppm of V
REF
V
REF
= 5V 16 ppm of V
REF
Output Noise V
IN
= 0V (Note 13) 6 µV
RMS
Output Noise (Fast Mode) V
REF
= 5V, 100 Samples/Second, f
O
= 2.048MHz 20 µV
RMS
Normal Mode Rejection 60Hz ±2% (Note 7) ● 110 130 dB
Normal Mode Rejection 50Hz ±2% (Note 8) ● 110 130 dB
Power Supply Rejection, DC V
REF
= 2.5V, V
IN
= 0V 100 dB
Power Supply Rejection, 60Hz ±2% V
REF
= 2.5V, V
IN
= 0V, (Notes 7, 15) 110 dB
Power Supply Rejection, 50Hz ±2% V
REF
= 2.5V, V
IN
= 0V, (Notes 8, 15) 110 dB
ORDER PART NUMBER
Consult factory for Military grade parts.
S8 PART MARKING
(Notes 1, 2)
Supply Voltage (V
CC
) to GND.......................–0.3V to 7V
Analog Input Voltage to GND ....... –0.3V to (V
CC
+ 0.3V)
Reference Input Voltage to GND .. –0.3V to (V
CC
+ 0.3V)
Digital Input Voltage to GND........ –0.3V to (V
CC
+ 0.3V)
Digital Output Voltage to GND ..... –0.3V to (V
CC
+ 0.3V)
Operating Temperature Range
LTC2420C ............................................... 0°C to 70°C
LTC2420I............................................ –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
T
JMAX
= 125°C, θ
JA
= 130°C/W
LTC2420CS8
LTC2420IS8
2420
2420I
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Notes 3, 4)
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
UUW
CONVERTER CHARACTERISTICS
U
1
2
3
4
8
7
6
5
TOP VIEW
F
O
SCK
SDO
CS
V
CC
V
REF
V
IN
GND
S8 PACKAGE
8-LEAD PLASTIC SO