Datasheet
LTC2452
4
2452fd
For more information www.linear.com/LTC2452
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
t
CONV
Conversion Time
l
13 16.6 23 ms
f
SCK
SCK Frequency Range
l
2 MHz
t
lSCK
SCK Low Period
l
250 ns
t
hSCK
SCK High Period
l
250 ns
t
1
CS Falling Edge to SDO Low-Z (Notes 7, 8)
l
0 100 ns
t
2
CS Rising Edge to SDO Hi-Z (Notes 7, 8)
l
0 100 ns
t
3
CS Falling Edge to SCK Falling Edge
l
100 ns
t
KQ
SCK Falling Edge to SDO Valid (Note 7)
l
0 100 ns
Typical perForMance characTerisTics
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2. All voltage values are with respect to GND. V
CC
= 2.7V to 5.5V
unless otherwise specified.
V
REFCM
= V
REF
/2, FS = V
REF
V
IN
= V
IN
+
– V
IN
–
, –V
REF
≤ V
IN
≤ V
REF
; V
INCM
= (V
IN
+
+ V
IN
–
)/2.
Note 3. Guaranteed by design, not subject to test.
Note 4. Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
Guaranteed by design and test correlation.
Note 5: CS = V
CC
. A positive current is flowing into the DUT pin.
Note 6: SCK = V
CC
or GND. SDO is high impedance.
Note 7: See Figure 4.
Note 8: See Figure 5.
Note 9: Input sampling current is the average input current drawn from the
input sampling network while the LTC2452 is actively sampling the input.
Note 10: A positive current is flowing into the DUT pin.
TiMing characTerisTics
Integral Nonlinearity, V
CC
= 5V Integral Nonlinearity, V
CC
= 3V Maximum INL vs Temperature
(T
A
= 25°C, unless otherwise noted)
DIFFERENTIAL INPUT VOLTAGE (V)
–5
INL (LSB)
1
3
2452 G01
–1
0
2
–2
–3
–1–2–3–4
1 2 3 4
0
5
T
A
= –45°C, 25°C
T
A
= 90°C
DIFFERENTIAL INPUT VOLTAGE (V)
–3
INL (LSB)
1
3
2452 G02
–1
0
2
–2
–3
–1–2
1 2
0
3
T
A
= –45°C, 25°C, 90°C
TEMPERATURE (°C)
–50
INL (LSB)
1
3
2452 G03
–1
0
2
–2
–3
–25
25 50 75
0
100
V
CC
= V
REF
= 5V, 4.1V, 3V