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ADT7516 Datasheet(PDF) 4 Page - Analog Devices

Part No. ADT7516
Description  SPI/I2C Compatible, Temperature Sensor, Four Channel ADC and Quad Voltage Output DAC
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADT7516 Datasheet(HTML) 4 Page - Analog Devices

 
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ADT7516/ADT7517/ADT7519
Rev. A | Page 4 of 44
Parameter1
Min
Typ
Max
Unit
Conditions/Comments
THERMAL CHARACTERISTICS
EXTERNAL TEMPERATURE SENSOR
External transistor = 2N3906.
Accuracy @ VDD = 3.3 V ±10%
±1.5
°C
TA = 85°C.
±3
°C
TA = 0°C +85°C.
±5
°C
TA = –40°C to +120°C.
Accuracy @ VDD = 5 V ±5%
±2
±3
°C
TA = 0°C +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
Slow ADC @ 25°C
Time to complete one measurement cycle
through all channels.
Averaging On
79.8
ms
AIN1 and AIN2 are selected on Pins 7 and 8.
Averaging Off
4.99
ms
AIN1 and AIN2 are selected on Pins 7 and 8.
Averaging On
94.76
ms
D+ and D– are selected on Pins 7 and 8.
Averaging Off
9.26
ms
D+ and D-– are selected on Pins 7 and 8.
Fast ADC @ 25°C
Averaging On
6.41
ms
AIN1 and AIN2 are selected on Pins 7 and 8.
Averaging Off
400.84
µs
AIN1 and AIN2 are selected on Pins 7 and 8.
Averaging On
21.77
ms
D+ and D– are selected on Pins 7 and 8.
Averaging Off
3.07
ms
D+ and D– are selected on Pins 7 and 8.
DAC EXTERNAL REFERENCE INPUT
4
VREF Input Range
1
VDD
V
Buffered reference.
VREF Input Impedance
>10
MΩ
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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