EM357 datasheet(21/244 Pages) SILABS

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EM351 / EM357

2.6

Non-RF System Electrical Characteristics

Table 2-6 lists the non-RF system level characteristics for the EM35x.

Table 2-7. Non-RF System Specifications

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

System wake time from deep sleep

From wakeup event to first ARM® CortexTM-M3

instruction running from 6 MHz internal RC

clock

Includes supply ramp time and oscillator

startup time

110

µs

Shutdown time going into deep sleep

From last ARM® CortexTM-M3 instruction to

deep sleep mode

µs

2.7

RF Electrical Characteristics

2.7.1

Receive

Table 2-7 lists the key parameters of the integrated IEEE 802.15.4-2003 receiver on the EM35x.

Note:

Receive measurements were collected with the EM35x Ceramic Balun Reference Design (Version A0) at

2440 MHz. The Typical number indicates one standard deviation above the mean, measured at room

temperature (25°C). The Min and Max numbers were measured over process corners at room temperature

Table 2-8. Receive Characteristics

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Frequency range

2400

2500

MHz

Sensitivity (boost mode)

1% PER, 20 byte packet defined by IEEE

802.15.4-2003

-102

-96

dBm

Sensitivity

1% PER, 20 byte packet defined by IEEE

802.15.4-2003

-100

-94

dBm

High-side adjacent channel rejection

IEEE 802.15.4-2003 interferer signal, wanted

IEEE 802.15.4-2003 signal at -82 dBm

Low-side adjacent channel rejection

IEEE 802.15.4-2003 interferer signal, wanted

IEEE 802.15.4-2003 signal at -82 dBm

2nd high-side adjacent channel rejection

IEEE 802.15.4-2003 interferer signal, wanted

IEEE 802.15.4-2003 signal at -82 dBm

2nd low-side adjacent channel rejection

IEEE 802.15.4-2003 interferer signal, wanted

IEEE 802.15.4-2003 signal at -82 dBm

High-side adjacent channel rejection

Filtered IEEE 802.15.4-2003 interferer signal,

wanted IEEE 802.15.4-2003 signal at -82 dBm

Low-side adjacent channel rejection

Filtered IEEE 802.15.4-2003 interferer signal,

wanted IEEE 802.15.4-2003 signal at -82 dBm

2-8

120-035X-000 Rev. 1.2

Final

EM357 Datasheet(PDF) 21 Page - Silicon Laboratories

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