THMC50_08 Datasheet, PDF (6/34 Pages) Texas Instruments – REMOTE/LOCAL TEMPERATURE MONITOR AND FAN CONTROLLER WITH SMBus INTERFACE

THMC50
REMOTE/LOCAL TEMPERATURE MONITOR AND
FAN CONTROLLER WITH SMBus INTERFACE
SLIS090 – JULY 1999
dc electrical characteristics, V_CC3 = V_(VCC3AUX) = 3.3 V, T_A = 25°C (unless otherwise noted)
(continued)
analog output: FAN_SPD/NTEST_IN
PARAMETER
TEST CONDITIONS
VOUT
Output voltage range
Total unadjusted error (TUE) (see Note 5)
Full-scale error
IL = –2 mA
Zero error, LSB
No load
Differential nonlinearity (DNL), LSB (monotonic by design)
DAC setting
0 × 16 to 0 × FF
Integral nonlinearity, LSB
C(LOAD)
Maximum external load capacitance allow to insure DAC
stability
Design parameter only –
not tested
I(SOURCE) Output source current
DAC setting
0 × 16 to 0 × FF
I(SINK)
Output sink current
DAC setting
0 × 16 to 0 × FF
NOTE 5: Total unadjusted error (TUE) includes offset, gain, and linearity errors of the DAC.
remote thermal diode sensing
T(RES)
PARAMETER
Temperature resolution
I(DIODE) Diode source current
I(RATIO) Diode source current ratio
TEST CONDITIONS
REMOTE_DIODE+ = REMOTE_DIODE– + 0.65 V,
high level
Low level
High level/low level
MIN
0
–3%
–3%
TYP
±1%
2
MAX
2.5
3%
3%
UNITS
V
–1
1
±1
50 pF
–2
mA
1
mA
MIN TYP MAX UNITS
1
°C
80
130
µA
8
13
9.8
10 10.2
6
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