LTC2487
power requireMenTs
The
●
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T = 25°C. (Note 3)
A
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
●
V
Supply Voltage
Supply Current
2.7
5.5
V
CC
●
●
●
I
Conversion Current (Note 11)
Temperature Measurement (Note 11)
Sleep Mode (Note 11)
160
200
1
275
300
2
µA
µA
µA
CC
DigiTal inpuTs anD DigiTal ouTpuTs
The
●
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T = 25°C. (Note 3)
A
SYMBOL
PARAMETER
CONDITIONS
MIN
10
TYP
MAX
4000
50
UNITS
kHz
µs
●
●
●
f
t
t
t
External Oscillator Frequency Range
External Oscillator High Period
External Oscillator Low Period
Conversion Time for 1x Speed Mode
(Note 16)
EOSC
HEO
0.125
0.125
50
µs
LEO
●
●
●
50Hz Mode
60Hz Mode
Simultaneous 50Hz/60Hz Mode
External Oscillator (Note 10)
157.2
131
144.1
160.3
133.6
146.9
163.5
136.3
149.9
ms
ms
ms
ms
CONV_1
41036/f
(in kHz)
EOSC
●
●
●
t
Conversion Time for 2x Speed Mode
50Hz Mode
78.7
65.6
72.2
80.3
66.9
73.6
81.9
68.2
75.1
ms
ms
ms
ms
CONV_2
60Hz Mode
Simultaneous 50Hz/60Hz Mode
External Oscillator (Note 10)
20556/f
(in kHz)
EOSC
i2c TiMing characTerisTics
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T = 25°C. (Note 3, 15)
A
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
kHz
µs
●
●
●
●
●
●
●
●
●
●
f
t
t
t
t
t
t
t
t
t
SCL Clock Frequency
0
0.6
400
SCL
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
HD(STA)
LOW
1.3
µs
0.6
µs
HIGH
0.6
µs
SU(STA)
HD(DAT)
SU(DAT)
r
0
0.9
µs
Data Set-Up Time
100
ns
Rise Time for SDA Signals
Fall Time for SDA Signals
Set-Up Time for Stop Condition
(Note 14)
(Note 14)
20 + 0.1C
20 + 0.1C
0.6
300
300
ns
B
ns
f
B
µs
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 7: 50Hz mode (internal oscillator) or f
= 256kHz 2ꢀ (external oscillator).
=307.2kHz 2ꢀ(external oscillator).
EOSC
Note8:60Hzmode (internal oscillator)orf
EOSC
Note 9: Simultaneous 50Hz/60Hz mode (internal oscillator) or f
280kHz 2ꢀ (external oscillator).
=
EOSC
Note 2: All voltage values are with respect to GND.
Note 10: The external oscillator is connected to the F pin. The external
O
Note 3: Unless otherwise specified: V = 2.7V to 5.5V
CC
oscillator frequency, f , is expressed in kHz.
EOSC
V
V
= V /2, F = 0.5V /Gain
REFCM
REF
S
REF
+
Note 11: The converter uses its internal oscillator.
Note 12: The output noise includes the contribution of the internal
calibration operations.
+
–
–
= IN – IN , V
= (IN – IN )/2,
IN
IN(CM)
+
–
where IN and IN are the selected input channels.
Note 4: Use internal conversion clock or external conversion clock source
Note 13: Guaranteed by design and test correlation.
with f
= 307.2kHz unless otherwise specified.
EOSC
Note 14: C = capacitance of one bus line in pF (10pF ≤ C ≤ 400pF).
B
B
Note 5: Guaranteed by design, not subject to test.
Note 15: All values refer to V
and V
levels.
IH(MIN)
IL(MAX)
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 16: Refer to Applications Information section for Performance vs
Data Rate graphs.
2487fa
ꢄ
Linear [ Linear ]
