LTC2431CMS#TR Linear Technology, LTC2431CMS#TR Datasheet - Page 5

• Manufacturer Part Number: LTC2431CMS#TR
• Description: IC ADC 20BIT DIFFINPUT/REF10MSOP
• Manufacturer: Linear Technology

Specifications of LTC2431CMS#TR

• Number Of Bits: 20
• Sampling Rate (per Second): 7.5
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 2
• Power Dissipation (max): 1mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LTC2431CMSTR

TI I G CHARACTERISTICS
range, otherwise specifications are at T
SYMBOL
f
t
t
t
f
D
f
t
t
t
t
t
t
t
t
t
t
Note 1: Absolute Maximum Ratings are those values beyond which the
life of the device may be impaired.
Note 2: All voltage values are with respect to GND.
Note 3: V
V
V
Note 4: F
source with f
Note 5: Guaranteed by design, not subject to test.
Note 6: Integral nonlinearity is defined as the deviation of a code from
a straight line passing through the actual endpoints of the transfer
curve. The deviation is calculated as the measured code minus the
expected value.
Note 7: F
(external oscillator).
Note 8: F
(external oscillator).
EOSC
HEO
LEO
CONV
ISCK
ESCK
LESCK
HESCK
DOUT_ISCK
DOUT_ESCK
1
2
3
4
KQMAX
KQMIN
t
t
5
6
REF
IN
ISCK
W
= IN
= REF
+
O
O
O
U
CC
– IN
+
pin tied to GND or to V
= 0V (internal oscillator) or f
= V
= 2.7V to 5.5V unless otherwise specified.
– REF
EOSC
PARAMETER
External Oscillator Frequency Range
External Oscillator High Period
External Oscillator Low Period
Conversion Time
Internal SCK Frequency
Internal SCK Duty Cycle
External SCK Frequency Range
External SCK Low Period
External SCK High Period
Internal SCK 24-Bit Data Output Time
External SCK 24-Bit Data Output Time (Note 9)
CS to SDO Low Z
CS to SDO High Z
CS to SCK
CS to SCK
SCK
SDO Hold After SCK
SCK Set-Up Before CS
SCK Hold After CS
–
CC
, V
(internal oscillator) or f
INCM
= 153600Hz unless otherwise specified.
–
, V
to SDO Valid
REFCM
= (IN
+
= (REF
+ IN
CC
–
)/2.
+
or to external conversion clock
+ REF
EOSC
EOSC
A
–
)/2;
= 153600Hz 2%
= 25 C. (Note 3)
= 128000Hz 2%
CONDITIONS
F
F
External Oscillator (Note 11)
Internal Oscillator (Note 10)
External Oscillator (Notes 10, 11)
(Note 10)
(Note 9)
(Note 9)
(Note 9)
Internal Oscillator (Notes 10, 12)
External Oscillator (Notes 10, 11)
(Note 10)
(Note 9)
(Note 5)
O
O
= 0V
= V
The
CC
denotes specifications which apply over the full operating temperature
Note 9: The converter is in external SCK mode of operation such that
the SCK pin is used as digital input. The frequency of the clock signal
driving SCK during the data output is f
Note 10: The converter is in internal SCK mode of operation such that
the SCK pin is used as digital output. In this mode of operation the
SCK pin has a total equivalent load capacitance C
Note 11: The external oscillator is connected to the F
oscillator frequency, f
Note 12: The converter uses the internal oscillator.
F
Note 13: The output noise includes the contribution of the internal
calibration operations.
Note 14: Guaranteed by design and test correlation.
O
= 0V or F
O
= V
CC
.
EOSC
LTC2430/LTC2431
, is expressed in kHz.
130.86
157.03
0.25
0.25
1.22
MIN
250
250
45
50
15
50
5
0
0
0
20510/f
192/f
24/f
ESCK
ESCK
EOSC
f
133.53
160.23
EOSC
EOSC
19.2
1.25
TYP
and is expressed in kHz.
(in kHz)
(in kHz)
/8
(in kHz)
LOAD
136.20
163.44
O
2000
2000
MAX
1.28
200
200
200
200
200
220
= 20pF.
pin. The external
55
50
UNITS
24301f
5
kHz
kHz
kHz
kHz
ms
ms
ms
ms
ms
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
s
s