A d v a nce d I n fo rm a t i o n

18

Linear Technology / Dust Networks

Eterna Datasheet

Parameter

Conditions

Min

Typ

Max

Units

at 0 dBm output power

26

mA

Active*

ARM Cortex-M3, RAM, and flash on;

radio and peripherals off

CLK = 7.37 MHz, Vcore = 1.8 V

2.4

mA

Flash write

Single bank write

3

mA

Flash erase

Single bank page or mass erase

2.5

mA

Radio Tx

†

Mesh Network - CLK = 7.3728 MHz,

AES active

0 dBm output power

+8 dBm output power

5.4

9.7

mA

mA

Radio Rx

†

Mesh Network - CLK = 7.3728 MHz,

AES active

4.5

mA

Note:

See section 3.0 for detailed operational definitions of states.

* CLK = Clock frequency of CPU and peripherals.

8.3

Radio Receive Characteristics

The following characteristics are measured with VSUPPLY = 3.6 V at 25 °C, unless otherwise specified.

Table 7

Radio Receive Characteristics

Parameter

Conditions

Min

Typ

Max

Units

Receiver sensitivity

PER = 1%, as specified by [ 1 ]

–93

dBm

Receiver sensitivity

PER = 50%

–95

dBm

Saturation (maximum input level)

0

dBm

Adjacent channel rejection (high

side)

Desired signal at -82 dBm, adjacent

modulated channel at 5 MHz, PER =

1%, as specified by [ 1 ]

22

dBc

Adjacent channel rejection (low

side)

Desired signal at -82 dBm, adjacent

modulated channel at -5 MHz, PER

= 1%, as specified by [ 1 ]

19

dBc

Alternate channel rejection (high

side)

Desired signal at -82 dBm, adjacent

modulated channel at 10 MHz, PER

= 1%, as specified by [ 1 ]

40

dBc

Alternate channel rejection (low

side)

Desired signal at -82 dBm, adjacent

modulated channel at -10 MHz, PER

= 1%, as specified by [ 1 ]

36

dBc

Second alternate channel

rejection

Desired signal at -82 dBm, adjacent

modulated channel at +/-10 MHz,

PER = 1%, as specified by [ 1 ]

42

dBc

Co-channel rejection

Desired signal at -82 dBm.

Undesired signal is 802.15.4

modulated at same frequency. PER

= 1%, as specified by [ 1 ]

–6

dBc

LO feed through

<–55

dBm

Frequency error tolerance

[ 1 ] requires ±40

±50

ppm

Symbol rate error tolerance

±50

ppm

RSSI input range

–10 to –90

dBm

RSSI accuracy

±6

dB

RSSI resolution

1

dB