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ADT7519ARQ-REEL7 Datasheet(PDF) 4 Page - Analog Devices

Part # ADT7519ARQ-REEL7
Description  SPI-/I2C-Compatible, Temperature Sensor,4-Channel ADC and Quad Voltage Output
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADT7519ARQ-REEL7 Datasheet(HTML) 4 Page - Analog Devices

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ADT7516/ADT7517/ADT7519
Rev. B | Page 4 of 44
Parameter1
Min
Typ
Max
Unit
Conditions/Comments
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
Thermal Voltage Output
8-Bit DAC Output
Resolution
1
°C
Scale Factor
8.97
mV/°C
0 V to VREF output, TA = −40°C to +120°C
17.58
mV/°C
0 V to 2 VREF output, TA = −40°C to +120°C
10-Bit DAC Output
Resolution
0.25
°C
Scale Factor
2.2
mV/°C
0 V to VREF output, TA = −40°C to +120°C
4.39
mV/°C
0 V to 2 VREF output, TA = −40°C to +120°C
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
ROUND ROBIN UPDATE RATE5
Time to complete one measurement cycle
through all channels
Slow ADC @ 25°C
Averaging On
79.8
ms
AIN1 and AIN2 are selected on Pin 7 and Pin 8
Averaging Off
4.99
ms
AIN1 and AIN2 are selected on Pin 7 and Pin 8
Averaging On
94.76
ms
D+ and D– are selected on Pin 7 and Pin 8
Averaging Off
9.26
ms
D+ and D– are selected on Pin 7 and Pin 8
Fast ADC @ 25°C
Averaging On
6.41
ms
AIN1 and AIN2 are selected on Pin 7 and Pin 8
Averaging Off
400.84
μs
AIN1 and AIN2 are selected on Pin 7 and Pin 8
Averaging On
21.77
ms
D+ and D– are selected on Pin 7 and Pin 8
Averaging Off
3.07
ms
D+ and D– are selected on Pin 7 and Pin 8
DAC EXTERNAL REFERENCE INPUT4
VREF Input Range
1
VDD
V
Buffered reference
VREF Input Impedance
>10
Buffered reference and power-down mode
Reference Feedthrough
–90
dB
Frequency = 10 kHz
Channel-to-Channel Isolation
–75
dB
Frequency = 10 kHz


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