LTC2497 Linear Technology, LTC2497 Datasheet - Page 5

• Manufacturer Part Number: LTC2497
• Description: 16-Bit 8-/16-Channel ADC
• Manufacturer: Linear Technology

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DIGITAL INPUTS AND DIGITAL OUTPUTS
full operating temperature range, otherwise specifi cations are at T
SYMBOL
f
t
t
t
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.
Note 3: V
where IN
Note 4: Use internal conversion clock or external conversion clock source
with f
Note 5: Guaranteed by design, not subject to test.
Note 6: Integral nonlinearity is defi ned as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
The deviation is measured from the center of the quantization band.
Note 7: f
I
temperature range, otherwise specifi cations are at T
SYMBOL
f
t
t
t
t
t
t
t
t
t
EOSC
HEO
LEO
CONV
SCL
HD(SDA)
LOW
HIGH
SU(STA)
HD(DAT)
SU(DAT)
SU(STO)
r
2
f
V
V
C TIMING CHARACTERISTICS
REFCM
IN
EOSC
= IN
EOSC
+
CC
and IN
= 307.2kHz unless otherwise specifi ed.
= V
+
= 2.7V to 5.5V unless otherwise specifi ed.
– IN
= 256kHz ±2% (external oscillator).
PARAMETER
External Oscillator Frequency Range
External Oscillator High Period
External Oscillator Low Period
Conversion Time
REF
PARAMETER
SCL Clock Frequency
Hold Time (Repeated) Start Condition
Low Period of the SCL Pin
High Period of the SCL Pin
Set-Up Time for a Repeated Start Condition
Data Hold Time
Data Set-Up Time
Rise Time for SDA Signals
Fall Time for SDA Signals
Set-Up Time for Stop Condition
–
–
/2, F
, V
are the selected input channels.
IN(CM)
S
= 0.5V
= (IN
REF
+
– IN
–
)/2,
CONDITIONS
(Note 16)
Internal Oscillator
External Oscillator (Note 10)
A
= 25°C. (Note 3, 15)
CONDITIONS
(Note 14)
(Note 14)
The
●
denotes the specifi cations which apply over the full operating
A
= 25°C. (Note 3)
Note 8: f
Note 9: Simultaneous 50Hz/60Hz (internal oscillator) or f
±2% (external oscillator).
Note 10: The external oscillator is connected to the F
oscillator frequency, f
Note 11: The converter uses its internal oscillator.
Note 12: The output noise includes the contribution of the internal
calibration operations.
Note 13: Guaranteed by design and test correlation.
Note 14: C
Note 15: All values refer to V
Note 16: Refer to Applications Information section for performance versus
data rate graphs.
EOSC
The
B
= capacitance of one bus line in pF (10pF ≤ C
= 307.2kHz ±2% (external oscillator).
●
denotes the specifi cations which apply over the
●
●
●
●
●
●
●
●
●
●
●
●
●
●
EOSC
0.125
0.125
144.1
20 + 0.1C
20 + 0.1C
MIN
, is expressed in kHz.
10
MIN
100
IH(MIN)
0.6
1.3
0.6
0.6
0.6
0
0
41036/f
B
B
and V
146.9
EOSC
IL(MAX)
TYP
TYP
(in kHz)
levels.
LTC2497
O
pin. The external
EOSC
B
149.9
4000
MAX
100
100
MAX
400
300
300
≤ 400pF).
0.9
= 280kHz
UNITS
UNITS
5
2497f
kHz
ms
ms
kHz
µs
µs
µs
µs
µs
µs
µs
ns
ns
ns
µs