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ADT7483A Datasheet(PDF) 3 Page - Analog Devices

Part No. ADT7483A
Description  Dual Channel Temperature Sensor and Over Temperature Alarm
Download  24 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADT7483A Datasheet(HTML) 3 Page - Analog Devices

 
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ADT7483A
Rev. 0 | Page 3 of 24
SPECIFICATIONS
TA = −40°C to +125°C, VDD = 3 V to 3.6 V, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions
POWER SUPPLY
Supply Voltage, VDD
3.0
3.30
3.6
V
Average Operating Supply Current, IDD
240
350
μA
0.0625 conversions/sec rate1
5
30
μA
Standby mode
Undervoltage Lockout Threshold
2.55
V
VDD input, disables ADC, rising edge
Power-On-Reset Threshold
1
2.5
V
TEMPERATURE-TO-DIGITAL CONVERTER2
Local Sensor Accuracy
±1
°C
0°C ≤ TA ≤ 70°C
±1.5
°C
0°C ≤ TA ≤ 85°C
±2.5
°C
−40 ≤ TA ≤ 100°C
Resolution
1
°C
Remote Diode Sensor Accuracy
±1
°C
0°C ≤ TA ≤ 70°C, −55°C ≤ TD3 ≤ 150°C
±1.5
°C
0°C ≤ TA ≤ 85°C, −55°C ≤ TD3 ≤ 150°C
±2.5
°C
−40 ≤ TA ≤ 100°C, −55°C ≤ TD3 ≤ +150°C
Resolution
0.25
°C
Remote Sensor Source Current3
233
μA
High level
14
μA
Low level
Conversion Time
73
94
ms
From stop bit to conversion complete (all channels),
one-shot mode with averaging switched on
11
14
ms
One-shot mode with averaging off,
(conversion rate = 16, 32, or 64 conversions/sec)
OPEN-DRAIN DIGITAL OUTPUTS (THERM, ALERT/THERM2)
Output Low Voltage, VOL
0.4
V
IOUT = −6.0 mA
High Level Output Leakage Current, IOH
0.1
1
μA
VOUT = VDD
SMBus INTERFACE3, 4
Logic Input High Voltage, VIH, SCLK, SDATA
2.1
V
Logic Input Low Voltage, VIL, SCLK, SDATA
0.8
V
Hysteresis
500
mV
SDA Output Low Voltage, VOL
0.4
V
IOUT = −6.0 mA
Logic Input Current, IIH, IIL
−1
+1
μA
SMBus Input Capacitance, SCLK, SDATA
5
pF
SMBus Clock Frequency
400
kHz
SMBus Timeout5
25
32
ms
User programmable
SCLK Falling Edge to SDATA Valid Time
1
μs
Master clocking in data
1 See Table 11 for information on other conversion rates.
2 Temperature accuracy guaranteed with averaging enabled.
3 Guaranteed by design, but not production tested.
4 See the SMBus Timing Specifications section for more information.
5 Disabled by default. Instructions to enable it are in the Serial Bus Interface section.


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