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參數(shù)資料
| 型號： | LTC2489IDETRPBF |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 16-Bit 2-/4-Channel ADC with Easy Drive Input Current Cancellation and I2C Interface |
| 中文描述： | 16位2-/4-Channel ADC，具有易于驅(qū)動的輸入電流取消和I2C接口 |
| 文件頁數(shù)： | 5/24頁 |
| 文件大?。?/td> | 341K |
| 代理商： | LTC2489IDETRPBF |
LTC2489
5
2489f
SYMBOL
f
EOSC
t
HEO
t
LEO
t
CONV
PARAMETER
External Oscillator Frequency Range
External Oscillator High Period
External Oscillator Low Period
Conversion Time
CONDITIONS
(Note 16)
MIN
10
0.125
0.125
144.1
TYP
MAX
4000
50
50
149.9
UNITS
kHz
●
●
μs
μs
ms
ms
●
Internal Oscillator
External Oscillator (Note 10)
●
146.9
41036/f
EOSC
(in kHz)
DIGITAL INPUTS AND DIGITAL OUTPUTS
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
The
●
denotes the specifications which apply over the
SYMBOL
f
SCL
t
HD(STA)
t
LOW
t
HIGH
t
SU(STA)
t
HD(DAT)
t
SU(DAT)
t
r
t
f
t
SU(STO)
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
CC
= 2.7V to 5.5V unless otherwise specified.
V
REFCM
= V
REF
/2, F
S
= 0.5V
REF
V
IN
= IN
+
– IN
–
, V
IN(CM)
= (IN
+
– IN
–
)/2,
where IN
+
and IN
–
are the selected input channels.
Note 4:
Use internal conversion clock or external conversion clock source
with f
EOSC
= 307.2kHz unless otherwise specified.
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 measured from the center of the quantization band.
Note 7:
f
EOSC
= 256kHz ±2% (external oscillator).
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
CONDITIONS
MIN
0
0.6
1.3
0.6
0.6
0
100
TYP
MAX
400
UNITS
kHz
●
●
μs
μs
μs
μs
μs
ns
ns
ns
μs
●
●
●
●
0.9
●
(Note 14)
(Note 14)
●
20 + 0.1C
B
20 + 0.1C
B
0.6
300
300
●
●
I
2
C TIMING CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3, 15)
The
●
denotes the specifications which apply over the full operating
Note 8:
f
EOSC
= 307.2kHz ±2% (external oscillator).
Note 9:
Simultaneous 50Hz/60Hz (internal oscillator) or f
EOSC
= 280kHz
±2% (external oscillator).
Note 10:
The external oscillator is connected to the F
O
pin. The external
oscillator frequency, f
EOSC
, is expressed in kHz.
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
B
= capacitance of one bus line in pF (10pF ≤ C
B
≤ 400pF).
Note 15:
All values refer to V
IH(MIN)
and V
IL(MAX)
levels.
Note 16:
Refer to Applications Information section for performance versus
data rate graphs.
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