AMC6821 Datasheet, PDF (3/47 Pages) Burr-Brown (TI) – Analog Monitor and Control Circuit

AMC6821
www.ti.com
SBAS386A – MAY 2006 – REVISED MAY 2006
ELECTRICAL CHARACTERISTICS
At T_A = –40°C to +100°C and V_DD = +3V or +5V, unless otherwise noted.
PARAMETER
TEMPERATURE MEASUREMENT
Local sensor accuracy
Remote sensor accuracy⁽¹⁾
Sensor resolution
Conversion time
PWM CONTROLLER
PWM frequency range (programmable)
PWM frequency accuracy
Duty cycle
Duty cycle resolution
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Full-scale count
Nominal input RPM
Internal clock frequency
DIGITAL INPUT/OUTPUT
V_OH Open-drain output low voltage
I_OH Open-drain high-level output leakage current
V_IH Input high voltage
V_IL Input low voltage
I_IH Input high current
I_IL Input low current
Input capacitance
POWER SUPPLY
V_DD
Current
Power dissipation
Operating temperature
Storage temperature
CONDITIONS
T_A = +50°C to +100°C
T_A = –25°C to +100°C
T_R = +50°C to +100°C
T_A = 0°C to +100°C
T_R = –40°C to +125°C
Both channels
Two channels
0°C to +100°C
Programmable
8-bit
0°C to +100°C
Sink current 6 mA, V_DD = +3V
Sink current 6mA, V_DD = +5V
Normal operation
Standby mode
AMC6821
MIN
TYP
MAX
UNIT
±0.5
±2.0
°C
±1.0
±3.0
°C
±0.5
±1.0
°C
±1.0
±3.0
°C
0.125
°C
62.5
ms
10
40k
Hz
±6
%
0
100
%
0.39
%/bit
±6
%
65535
100
23000 RPM
100
kHz
0
0.4
V
TBD
V
0.1
1
µA
2.1
V_DD + 0.3
V
0
0.8
V
–1
µA
1
µA
5
pF
2.70
5
5.25
V
1.1
TBD
mA
TBD
µA
5
mW
–40
+125
°C
–65
+150
°C
(1) The remote temperature sensor is optimized for thePentium-IV™ thermal diode with diode ideality n_MIN = 1.0012, n_TYP = 1.0021, and
n_MAX = 1.0030.
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