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THMC50 Datasheet(PDF) 6 Page - Texas Instruments

Part No. THMC50
Description  REMOTE/LOCAL TEMPERATURE MONITOR AND FAN CONTROLLER WITH SMBus INTERFACE
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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THMC50 Datasheet(HTML) 6 Page - Texas Instruments

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THMC50
REMOTE/LOCAL TEMPERATURE MONITOR AND
FAN CONTROLLER WITH SMBus INTERFACE
SLIS090 – JULY 1999
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
dc electrical characteristics, VCC3 = V(VCC3AUX) = 3.3 V, TA = 25°C (unless otherwise noted)
(continued)
analog output: FAN_SPD/NTEST_IN
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VOUT
Output voltage range
0
2.5
V
Total unadjusted error (TUE) (see Note 5)
IL = –2 mA
–3%
3%
Full-scale error
–3%
±1%
3%
Zero error, LSB
No load
2
Differential nonlinearity (DNL), LSB (monotonic by design)
DAC setting
0
× 16 to 0 × FF
–1
1
Integral nonlinearity, LSB
±1
C(LOAD)
Maximum external load capacitance allow to insure DAC
stability
Design parameter only –
not tested
50
pF
I(SOURCE) Output source current
DAC setting
0
× 16 to 0 × FF
–2
mA
I(SINK)
Output sink current
DAC setting
0
× 16 to 0 × FF
1
mA
NOTE 5: Total unadjusted error (TUE) includes offset, gain, and linearity errors of the DAC.
remote thermal diode sensing
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
T(RES)
Temperature resolution
1
°C
I(DIODE)
Diode source current
REMOTE_DIODE+ = REMOTE_DIODE– + 0.65 V,
high level
80
130
µA
(DIODE)
Low level
8
13
µ
I(RATIO)
Diode source current ratio
High level/low level
9.8
10
10.2


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