ADT7466 データシートの表示（PDF） - Analog Devices
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ADT7466 Datasheet PDF : 48 Pages
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ADT7466
Parameter
Min Typ Max Unit Test Conditions/Comments
DRIVE OUTPUTS (DRIVE1, DRIVE2)
Output Voltage Range
0–2.2
V Digital input = 0x00 to 0xFF
Output Source Current
2
mA
Output Sink Current
0.5
mA
DAC Resolution
8
Bits
Monotonicity
8
Bits
Differential Nonlinearity
±1
LSB
Integral Nonlinearity
±1
LSB
Total Unadjusted Error
±5
% IL = 2 mA
REFERENCE VOLTAGE OUTPUT
(REFOUT)
Output Voltage
2.226 2.25 2.288 V
Output Source Current
10
mA
Output Sink Current
0.6
mA
OPEN-DRAIN SERIAL DATA BUS
OUTPUT (SDA)
Output Low Voltage (VOL)
High Level Output Current (IOH)
0.4
0.1 1
V
IOUT = −4.0 mA, VCC = 3.3 V
µA VOUT = VCC
DIGITAL INPUTS (SCL, SDA, TACH
INPUTS, PROCHOT)
Input High Voltage (VIH)
Input Low Voltage (VIL)
Hysteresis
2.0
V
0.8
V
0.5
V
DIGITAL INPUT CURRENT (TACH
INPUTS, PROCHOT)
Input High Current (IIH)
Input Low Current (IIL)
Input Capacitance (IN)
−1
1
20
µA VIN = VCC
µA VIN = 0
pF
OPEN-DRAIN DIGITAL OUTPUTS
(ALERT, FANLOCK, FAN1_ON/THERM)
Output Low Voltage (VOL)
High Level Output Current (IOH)
SERIAL BUS TIMING 2
0.4
0.1 1
V
IOUT = −4.0 mA, VCC = 3.3 V
µA VOUT =VCC
Clock Frequency (fSCLK)
Glitch Immunity (tSW)
Bus Free Time (tBUF)
1.3
Start Setup Time (tSU;STA)
0.6
Start Hold Time (tHD;STA)
0.6
SCL Low Time (tLOW)
1.3
SCL High Time (tHIGH)
0.6
SCL, SDA Rise Time (tr)
SCL, SDA Fall Time (tf )
Data Setup Time (tSU;DAT)
100
Detect Clock Low Timeout (tTIMEOUT)
25
400
50
1000
300
64
kHz See Figure 2
ns See Figure 2
µs See Figure 2
µs See Figure 2
µs See Figure 2
µs See Figure 2
µs See Figure 2
ns See Figure 2
ns See Figure 2
ns See Figure 2
Ms Can be optionally disabled
1 All voltages are measured with respect to GND, unless otherwise specified. Typical values are at TA = 25°C and represent the most likely parametric norm. Logic inputs
accept input high voltages up to 5 V even when the device is operating at supply voltages below 5 V. Timing specifications are tested at logic levels of VIL = 0.8 V for a
falling edge and at VIH = 2.0 V for a rising edge.
2 Guaranteed by design, not production tested.
Rev. 0 | Page 4 of 48
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