Specifications

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AX-SIGFOX/D

11

4.2.

DC Characteristics

Supplies

SYM

DESCRIPTION

CONDITION

MIN

TYP

MAX

UNIT

Conditions for all current and energy values unless otherwise specified are for the hardware configuration described in the AX-Sigfox Application Note:

Sigfox Compliant Reference Design.

Operational ambient temperature

-40

27

85

°C

I/O and voltage regulator supply

voltage

1.8

3.0

3.6

V

I/O voltage ramp for reset activation;

Note 1

Ramp starts at VDD_IO≤0.1V

0.1

V/ms

I/O voltage ramp for reset activation;

Note 1

Ramp starts at 0.1V<VDD_IO<0.7V

3.3

V/ms

Deep sleep mode current

AT$P=2

100

nA

Sleep mode current

AT$P=1

1.3

μA

Standby mode current

0.5

mA

Current consumption continuous RX

AT$SR=1,1,-1

10

mA

Energy to send a Sigfox out of band

message, 0dBm

AT$S0

0.12

C

Energy to send a bit, 0dBm

AT$SB=0

0.08

C

Energy to send a bit with downlink

receive, 0dBm

AT$SB=0,1

0.14

C

Energy to send the longest possible

Sigfox frame (12 byte) , 0dBm

AT$SF=00112233445566778899aabb

0.27

C

Energy to send the longest possible

Sigfox frame (12 byte) with downlink

receive, 0dBm

AT$SF=00112233445566778899aabb,1

0.27

C

Energy to send a Sigfox out of band

message, 14dBm

AT$S0

0.28

C

Energy to send a bit, 14dBm

AT$SB=0

0.20

C

Energy to send a bit with downlink

receive, 14dBm

AT$SB=0,1

0.35

C

Energy to send the longest possible

Sigfox frame (12 byte) , 14dBm

AT$SF=00112233445566778899aabb

0.39

C

Energy to send the longest possible

Sigfox frame (12 byte) with downlink

receive, 14dBm

AT$SF=00112233445566778899aabb,1

0.46

C

Modulated Transmitter Current,

Notes 3, 4

Pout=0 dBm; average

19.0

mA

Modulated Transmitter Current,

Notes 3, 4

Pout=14 dBm; average

49.0

mA

Notes :

1.

If VDD_IO ramps cannot be guaranteed, an external reset circuit is recommended, see the AX8052 Application Note: Power On Reset

2.

Digital circuitry is functional down to typically 1 V.

3.

The output power of the AX-Sigfox can be programmed in 1 dB steps from 0 dBm – 14 dBm. Current consumption values are given for a

matching network that is optimized for 14 dBm output. 0 dBm transmission with typically 10 mA can be achieved with other networks

that are optimized for 0 dBm operation.

4.

Values in dBm are typical, the matching network is optimized for 14 dBm