LTC2453
4
2453fc
TYPICAL PERFORMANCE CHARACTERISTICS
Integral Nonlinearity, V
CC
= 5V
Integral Nonlinearity, V
CC
= 3V Maximum INL vs Temperature
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Notes 2, 7)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
CONV
Conversion Time
l
13 16.6 23 ms
f
SCL
SCL Clock Frequency
l
0 400 kHz
t
HD(SDA)
Hold Time (Repeated) START Condition
l
0.6 µs
t
LOW
LOW Period of the SCL Pin
l
1.3 µs
t
HIGH
HIGH Period of the SCL Pin
l
0.6 µs
t
SU(STA)
Set-Up Time for a Repeated START Condition
l
0.6 µs
t
HD(DAT)
Data Hold Time
l
0 0.9 µs
t
SU(DAT)
Data Set-Up Time
l
100 ns
t
r
Rise Time for SDA, SCL Signals (Note 6)
l
20 + 0.1C
B
300 ns
t
f
Fall Time for SDA, SCL Signals (Note 6)
l
20 + 0.1C
B
300 ns
t
SU(STO)
Set-Up Time for STOP Condition
l
0.6 µs
t
BUF
Bus Free Time Between a Stop and Start Condition
l
1.3 µs
t
OF
Output Fall Time V
IHMIN
to V
ILMAX
Bus Load C
B
10pF to
400pF (Note 6)
l
20 + 0.1C
B
250 ns
t
SP
Input Spike Suppression
l
50 ns
I
2
C TIMING 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
REF
= V
REF
+
– V
REF
–
, V
REFCM
= (V
REF
+
+ V
REF
–
)/2, FS = V
REF
+
– 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. Input sampling current is the average input current drawn from
the input sampling network while the LTC2453 is converting.
Note 6. C
B
= capacitance of one bus line in pF.
Note 7. All values refer to V
IH(MIN
) and V
IL(MAX)
levels.
Note 8. A positive current is flowing into the DUT pin.
DIFFERENTIAL INPUT VOLTAGE (V)
–5
INL (LSB)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
3
2453 G01
–3 –1 1 52–4 –2 0 4
V
CC
= 5V
V
REF
+
= 5V
V
REF
–
= 0V
T
A
= –45°C, 25°C, 90°C
DIFFERENTIAL INPUT VOLTAGE (V)
–3
INL (LSB)
–0.5
0
0.5
0
2
2453 G02
–1.0
–1.5
–2.0
–2 –1 1
1.0
1.5
2.0
3
V
CC
= 3V
V
REF
+
= 3V
V
REF
–
= 0V
T
A
= –45°C, 25°C, 90°C
TEMPERATURE (°C)
–50
0
INL (LSB)
0.5
1.0
1.5
–25 0 25 50
2453 G03
75 100
V
CC
= V
REF
+
= 5V, 4.1V, 3V
(T
A
= 25°C, unless otherwise noted)
