ADF7024 datasheet(9/24 Pages) AD

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Data Sheet

ADF7024

AUXILARY BLOCK SPECIFICATIONS

Table 6.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

32 kHz RC OSCILLATOR

Frequency

32.768

kHz

After calibration

Frequency Accuracy

1.5

After calibration at 25°C

Frequency Drift

Temperature Coefficient

0.14

%/°C

Voltage Coefficient

%/V

Calibration Time

1.25

WAKE-UP CONTROLLER (WUC)

Hardware Timer

Wake-Up Period

61 × 10−6

1.31 × 105

sec

Firmware Timer

Wake-Up Period

216

Hardware

periods

Firmware counter counts of the number of

hardware wake-up cycles, resolution of 16 bits

ADC

Resolution

Bits

DNL

±1

LSB

VDD from 2.2 V to 3.6 V, TA = 25°C

INL

±1

LSB

VDD from 2.2 V to 3.6 V, TA = 25°C

Conversion Time

µs

Input Capacitance

12.4

BATTERY MONITOR

Absolute Accuracy

±45

Alarm Voltage Set Point

1.7

2.7

Alarm Voltage Step Size

5-bit resolution

Start-Up Time

100

µs

Current Consumption

µA

When enabled

TEMPERATURE SENSOR

Range

−40

+85

°C

Resolution

0.3

°C

With averaging

Accuracy of Temperature Readback

−4 to +7

°C

Temperature range = −40°C to +85°C

(calibrated at 25°C)

±4

°C

Temperature range = −36°C to +84°C

(calibrated at 25°C)

±3

°C

Temperature range = −12°C to +79°C

(calibrated at 25°C)

Rev. B | Page 9 of 24

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