CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
1.
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
3. For
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
4. Jedec Class II pulse conditions and failure criterion used. Level B exceptions are: using a max positive pulse of 6.5V on the SHDN pin, and using
a max negative pulse of -0.8V for all pins.
Analog Specifications
SYMBOL
R
TOTAL
Over recommended operating conditions, unless otherwise stated.
TEST CONDITIONS
W option
U option
MIN
(Note 21)
TYP
(Note 5)
10
50
-20
±50
±80
0
70
10/10/25
Voltage at pin from GND to V
CC
0.1
1
V
CC
200
+20
MAX
(Note 21)
UNIT
k
k
%
ppm/°C
(Note 18)
ppm/°C
(Note 18)
V
pF
µA
PARAMETER
R
H
to R
L
Resistance
R
H
to R
L
Resistance Tolerance
End-to-End Temperature Coefficient
W and U option
W option
U option
V
RH
, V
RL
R
W
C
H
/C
L
/C
W
(Note 20)
I
LkgDCP
V
RH
and V
RL
Terminal Voltages
Wiper Resistance
Potentiometer Capacitance
Leakage on DCP Pins
V
RH
and V
RL
to GND
V
CC
= 3.3V, wiper current = V
CC
/R
TOTAL
VOLTAGE DIVIDER MODE
(0V @ R
L
i; V
CC
@ R
H
i; measured at R
W
i, unloaded; i = 0, 1, 2, or 3)
INL
(Note 10)
DNL
(Note 9)
ZSerror
(Note 7)
FSerror
(Note 8)
V
MATCH
(Note 11)
Integral Non-linearity
Differential Non-linearity
Zero-scale Error
Monotonic over all tap positions
Monotonic over all tap positions
W option
U option
Full-scale error
W option
U option
DCP to DCP Matching
Any two DCPs at same tap position, same
voltage at all R
H
terminals, and same voltage
at all R
L
terminals
-1
-0.5
0
0
-5
-2
-2
1
0.5
-1
-1
1
0.5
5
2
0
0
2
LSB
(Note 6)
LSB
(Note 6)
LSB
(Note 6)
LSB
(Note 6)
LSB
(Note 6)
FN6177 Rev 2.00
September 3, 2009
Page 4 of 16
ISL22346
Analog Specifications
SYMBOL
TC
V
(Note 12)
Over recommended operating conditions, unless otherwise stated.
(Continued)
TEST CONDITIONS
DCP register set to 40 hex
MIN
(Note 21)
TYP
(Note 5)
±4
MAX
(Note 21)
UNIT
ppm/°C
PARAMETER
Ratiometric Temperature Coefficient
RESISTOR MODE
(Measurements between R
W
i and R
L
i with R
H
i not connected, or between R
W
i and R
H
i with R
L
i not connected. i = 0, 1, 2 or 3)
RINL
(Note 16)
RDNL
(Note 15)
Integral Non-linearity
Differential Non-linearity
DCP register set between 10h and 7Fh;
monotonic over all tap positions
DCP register set between 10h and 7Fh;
monotonic over all tap positions, W option
DCP register set between 10h and 7Fh;
monotonic over all tap positions, U option
Roffset
(Note 14)
Offset
W option
U option
R
MATCH
(Note 17)
DCP to DCP Matching
Any two DCPs at the same tap position with
the same terminal voltages
-1
-1
-0.5
0
0
-2
1
0.5
1
1
0.5
5
2
2
MI
(Note 13)
MI
(Note 13)
MI
(Note 13)
MI
(Note 13)
MI
(Note 13)
MI
(Note 13)
Operating Specifications
Over the recommended operating conditions, unless otherwise specified.
在电能源的使用中，照明用电占据了相当大的比例，我们现在常用的日光灯、节能灯等灯具，较之早先的普通白炽灯，在发光效率上有了很大提高，得到了广泛的应用。随着制造工艺水平的不断提高，LED（发光二极管）也被广泛用于各种照明领域。 LED 具有更高的发光效率，更低的耗电量，使用寿命也更长，在城市亮灯工程和家居照明当中起到了非常好的效果。在当前能源紧缺的环境下，LED 节能技术将成为一项很重要的...[详细]
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