Datasheet

LM96000
SNAS234C –APRIL 2004–REVISED MARCH 2013 www.ti.com
DC Electrical Characteristics (continued)
The following specifications apply for V+ = 3.0V to 3.6V, and all analog input source impedance R
S
= 50Ω unless otherwise
specified in conditions. Boldface limits apply for T
A
= T
J
over T
MIN
=0°C to T
MAX
=85°C; all other limits T
A
=T
J
= 25°C. T
A
is
the ambient temperature of the LM96000; T
J
is the junction temperature of the LM96000; T
D
is the thermal diode junction
temperature.
Typical Limits Units
Parameter Test Conditions
(1) (2)
(Limits)
SMBUS OPEN-DRAIN OUTPUT: SMBDAT
V
OL
Logic Low Output Voltage I
OUT
= +4 mA 0.4V V (max)
I
OH
High Level Output Current V
OUT
= V+ 0.1 10 µA (max)
SMBUS INPUTS: SMBCLK. SMBDAT
V
IH
Logic Input High Voltage 2.1 V (min)
V
IL
Logic Input Low Voltage 0.8 V (max)
V
HYST
Logic Input Hysteresis Voltage 300 mV
DIGITAL INPUTS: ALL
V
IH
Logic Input High Voltage 2.1 V (min)
V
IL
Logic Input Low Voltage 0.8 V (max)
V
TH
Logic Input Threshold Voltage 1.5 V
I
IH
Logic High Input Current V
IN
= V+ 0.005 10 µA (max)
I
IL
Logic Low Input Current V
IN
= GND −0.005 −10 µA (max)
C
IN
Digital Input Capacitance 20 pF
AC Electrical Characteristics
The following specifications apply for V+ = 3.0V to 3.6V unless otherwise specified in conditions. Boldface limits apply for
T
A
= T
J
over T
MIN
=0°C to T
MAX
=85°C; all other limits T
A
=T
J
= 25°C.
Typical Limits Units
Parameter Test Conditions
(1) (2)
(Limits)
TACHOMETER ACCURACY
Fan Count Accuracy ±10 % (max)
Fan Full-Scale Count 65536 (max)
Fan Counter Clock Frequency 90 kHz
Fan Count Conversion Time 0.7 1.4 sec (max)
FAN PWM OUTPUT
Frequency Setting Accuracy ±10 % (max)
Frequency Range 10 Hz
30 kHz
Duty-Cycle Range Low frequency range 0 to 100 % (max)
Duty-Cycle Resolution (8-bits) 0.390625 %
Spin-Up Time Interval Range 100 ms
4000 ms
Spin-Up Time Interval Accuracy ±10 % (max)
SPIKE SMOOTHING FILTER
Time Interval Deviation ±10 % (max)
Time Interval Range 35 sec
0.8 sec
(1) Typicals are at T
A
= 25°C and represent most likely parametric norm.
(2) Limits are specified to TI's AOQL (Average Outgoing Quality Level).
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