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ADT7411 Datasheet(PDF) 3 Page - Analog Devices

Part No. ADT7411
Description  SPI-/IC-Compatible, 10-Bit Digital Temperature Sensor and 8-Channel ADC
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADT7411 Datasheet(HTML) 3 Page - Analog Devices

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ADT7411
Rev. B | Page 3 of 36
SPECIFICATIONS
VDD = 2.7 V to 5.5 V, GND = 0 V, unless otherwise noted. Temperature ranges are −40°C to +120°C.
Table 1.
Parameter1
Min
Typ
Max
Unit
Conditions/Comments
ADC DC ACCURACY
Maximum VDD = 5 V.
Resolution
10
Bits
Total Unadjusted Error (TUE)
2
3
% of FSR
VDD = 2.7 V to 5.5 V.
2
% of FSR
VDD = 3.3 V (±10%).
Offset Error
±0.5
% of FSR
Gain Error
±2
% of FSR
ADC BANDWIDTH
DC
Hz
ANALOG INPUTS
Input Voltage Range
0
2.25
V
AIN1 to AIN8. C4 = 0 in Control Configuration 3.
0
VDD
V
AIN1 to AIN8. C4 = 1 in Control Configuration 3.
DC Leakage Current
±1
μA
Input Capacitance
5
20
pF
Input Resistance
10
THERMAL CHARACTERISTICS
Internal reference used. Averaging on.
Internal Temperature Sensor
Accuracy @ VDD = 3.3 V ± 10%
±1.5
°C
TA = 85°C.
±0.5
±3
°C
TA = 0°C to 85°C.
±2
±5
°C
TA = −40°C to +120°C.
Accuracy @ VDD = 5 V ± 5%
±2
±3
°C
TA = 0°C to 85°C.
±3
±5
°C
TA = −40°C to +120°C.
Resolution
10
Bits
Equivalent to 0.25°C.
Long-Term Drift
0.25
°C
Drift over 10 years if part is operated at 55°C.
External Temperature Sensor
External transistor = 2N3906.
Accuracy @ VDD = 3.3 V ± 10%
±1.5
°C
TA = 85°C.
±3
°C
TA = 0°C to 85°C.
±5
°C
TA = −40°C to +120°C.
Accuracy @ VDD = 5 V ± 5%
±2
±3
°C
TA = 0°C to 85°C.
±3
±5
°C
TA = −40°C to +120°C.
Resolution
10
Bits
Equivalent to 0.25°C.
Output Source Current
180
μA
High level.
11
μA
Low level.
CONVERSION TIMES
Single-channel mode.
Slow ADC
VDD/AIN
11.4
ms
Averaging (16 samples) on.
712
μs
Averaging off.
Internal Temperature
11.4
ms
Averaging (16 samples) on.
712
μs
Averaging off.
External Temperature
24.22
ms
Averaging (16 samples) on.
1.51
ms
Averaging off.
Fast ADC
VDD/AIN
712
μs
Averaging (16 samples) on.
44.5
μs
Averaging off.
Internal Temperature
2.14
ms
Averaging (16 samples) on.
134
μs
Averaging off.
External Temperature
14.25
ms
Averaging (16 samples) on.
890
μs
Averaging off.


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