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ADT7488A Datasheet(Arkusz danych) 3 Page - Analog Devices

Numer części ADT7488A
Szczegółowy opis  SST Digital Temperature Sensor and Voltage Monitor
Pobierz  16 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
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ADT7488A
Rev. 0 | Page 3 of 16
SPECIFICATIONS
TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
POWER SUPPLY
Supply Voltage, VCC
3.0
3.3
3.6
V
Undervoltage Lockout Threshold
2.8
V
Average Operating Supply Current, IDD
3.8
5
mA
Continuous conversions
TEMPERATURE-TO-DIGITAL CONVERTER
Local Sensor Accuracy
+1
±1.75
°C
40°C
≤ T
A
≤ 70°C; V
CC
= 3.3 V ±5%
±4
°C
−40°C
≤ T
A
≤ +100°C
Remote Sensor Accuracy
±1
°C
−40°C
≤T
D
≤ +125°C; T
A
= 25°C; VCC = 3.3 V
+1
±1.75
°C
−40°C
≤ T
D
≤ +125°C; −40 ≤T
A
≤ 70°C;
VCC = 3.3 V ±5%
±4
°C
−40°C
≤T
D
≤ +125°C; −40 ≤T
A
≤ +100°C
Remote Sensor Source Current
12
μA
Low level
80
μA
Mid level
204
μA
High level
Resolution
0.016
°C
Series Resistance Cancellation
1.5
The ADT7488A cancels 1.5 kΩ in series
with the remote thermal diode
DIGITAL INPUT (ADD)
Input High Voltage, VIH
2.3
V
Input Low Voltage, VIL
0.8
V
Input High Current, IIH
−1
μA
VIN = VCC
Input Low Current, IIL
1
μA
VIN = 0
Pin Capacitance
5
pF
ANALOG-TO-DIGITAL CONVERTER
(Including Multiplexer and Attenuators)
Total Unadjusted Error (TUE)
±1.5
%
Differential Nonlinearity (DNL)
±1
LSB
10 bits
Power Supply Sensitivity
±0.1
%/V
Conversion Time (Voltage Input)1
11
ms
Averaging enabled
Conversion Time (Local Temperature)1
12
ms
Averaging enabled
Conversion Time (Remote Temperature)1
38
ms
Averaging enabled
Total Monitoring Cycle Time1
121
ms
Averaging enabled
Input Resistances
VCCP and 2.5V Channels
80
110
140
DIGITAL I/O (SST Pin)
Input High Voltage , VIH
1.1
V
Input Low Voltage, VIL
0.4
V
Hysteresis1
150
mV
Between input switching levels
Output High Voltage, VOH
1.1
1.9
V
ISOURCE = 6 mA (maximum)
High Impedance State Leakage, ILEAK
±1
μA
Device powered on SST bus;
VSST = 1.1 V, VCC = 3.3 V
High Impedance State Leakage, ILEAK
±10
μA
Device unpowered on SST bus;
VSST = 1.1 V, VCC = 0 V
Signal Noise Immunity, VNOISE
300
mV p-p
Noise glitches from 10 MHz to 100 MHz;
width up to 50 ns




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