EM260-RTR datasheet(14/50 Pages) SILICONIMAGE

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EM260

120-0260-000M Rev 1.1

Page 14

3.6.2

Transmit

Table 8 lists the key parameters of the integrated IEEE 802.15.4 transmitter on the EM260.

Note: Transmit Measurements were collected with the Silicon Labs EM260 Ceramic Balun Reference Design at

2440MHz and using the EmberZNet software stack Version 3.0.1. The Typical number indicates one standard

deviation below the mean, measured at room temperature (25C). The Min and Max numbers are measured

over process corners at room temperature (25C).

Table 8. Transmit Characteristics

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Maximum output power (boost

mode)

At highest power setting

4.5

dBm

Maximum output power

At highest power setting

0.5

2.5

dBm

Minimum output power

At lowest power setting

- 32

dBm

Error vector magnitude

As defined by IEEE 802.15.4,

which sets a 35% maximum

Carrier frequency error

- 40

+ 40

ppm

Load impedance

200

Ω

PSD mask relative

3.5MHz away

- 20

PSD mask absolute

3.5MHz away

- 30

dBm

3.6.3

Synthesizer

Table 9 lists the key parameters of the integrated synthesizer on the EM260.

Table 9. Synthesizer Characteristics

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Frequency range

2400

2500

MHz

Frequency resolution

11.7

kHz

Lock time

From off, with correct VCO DAC setting

100

μs

Relock time

Channel change or RX/TX turnaround

(IEEE 802.15.4 defines 192μs

turnaround time)

100

μs

Phase noise at 100kHz

- 71

dBc/Hz

Phase noise at 1MHz

- 91

dBc/Hz

Phase noise at 4MHz

103

dBc/Hz

Phase noise at 10MHz

111

dBc/Hz

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