ADT7517(RevA) Ver la hoja de datos (PDF) - Analog Devices

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ADT7517
(Rev.:RevA)

SPI/I2C Compatible, Temperature Sensor, 4-Channel ADC and Quad Voltage Output DAC

Analog Devices 

ADT7516/ADT7517/ADT7519

Parameter1

Min Typ Max

THERMAL CHARACTERISTICS

EXTERNAL TEMPERATURE SENSOR

Accuracy @ VDD = 3.3 V ±10%

±1.5

±3

±5

Accuracy @ VDD = 5 V ±5%

±2

±3

±3

±5

Resolution

10

Output Source Current

180

11

Thermal Voltage Output

8-Bit DAC Output

Resolution

1

Scale Factor

8.97

17.58

10-Bit DAC Output

Resolution

0.25

Scale Factor

2.2

4.39

CONVERSION TIMES

Slow ADC

VDD/AIN

11.4

712

Internal Temperature

11.4

712

External Temperature

24.22

1.51

Fast ADC

VDD/AIN

712

44.5

Internal Temperature

2.14

134

External Temperature

14.25

890

ROUND ROBIN UPDATE RATE5

Slow ADC @ 25°C

Averaging On

79.8

Averaging Off

4.99

Averaging On

94.76

Averaging Off

9.26

Fast ADC @ 25°C

Averaging On

6.41

Averaging Off

400.84

Averaging On

21.77

Averaging Off

3.07

DAC EXTERNAL REFERENCE INPUT

4

VREF Input Range

1

VDD

VREF Input Impedance

>10

Reference Feedthrough

–90

Channel-to-Channel Isolation

–75

Unit

°C

°C

°C

°C

°C

Bits

µA

µA

°C

mV/°C

mV/°C

°C

mV/°C

mV/°C

ms

µs

ms

µs

ms

ms

µs

µs

ms

µs

ms

µs

ms

ms

ms

ms

ms

µs

ms

ms

V

MΩ

dB

dB

Conditions/Comments

External transistor = 2N3906.

TA = 85°C.

TA = 0°C +85°C.

TA = –40°C to +120°C.

TA = 0°C +85°C.

TA = –40°C to +120°C.

Equivalent to 0.25°C.

High Level.

Low Level.

0 V to VREF output. TA = –40°C to +120°C.

0 V to 2 VREF output. TA = –40°C to +120°C.

0 V to VREF output. TA = –40°C to +120°C.

0 V to 2 VREF output. TA = –40°C to +120°C.

Single channel mode.

Averaging (16 samples) on.

Averaging off.

Averaging (16 samples) on.

Averaging off.

Averaging (16 samples) on.

Averaging off.

Averaging (16 samples) on.

Averaging off.

Averaging (16 samples) on.

Averaging off.

Averaging (16 samples) on.

Averaging off.

Time to complete one measurement cycle

through all channels.

AIN1 and AIN2 are selected on Pins 7 and 8.

AIN1 and AIN2 are selected on Pins 7 and 8.

D+ and D– are selected on Pins 7 and 8.

D+ and D-– are selected on Pins 7 and 8.

AIN1 and AIN2 are selected on Pins 7 and 8.

AIN1 and AIN2 are selected on Pins 7 and 8.

D+ and D– are selected on Pins 7 and 8.

D+ and D– are selected on Pins 7 and 8.

Buffered reference.

Buffered reference and power-down mode.

Frequency = 10 kHz.

Frequency = 10 kHz.

Rev. A | Page 4 of 44

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