ETRX357 Telegesis Ltd, ETRX357 Datasheet - Page 18

• Manufacturer Part Number: ETRX357
• Description: MODULE ZIGBEE EM357 W/CHIP ANT
• Manufacturer: Telegesis Ltd

Specifications of ETRX357

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: ISM
• Power - Output: 3dBm
• Sensitivity: -100dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 27mA
• Current - Transmitting: 31mA
• Data Interface: PCB, Surface Mount
• Memory Size: 192kB Flash, 12kB RAM
• Antenna Connector: On-Board, Chip
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 920-1006-2

Please Note: For the relationship between EM35x power settings and module output power
please relate to chapter 11.1 of this document. When developing custom firmware the output
power settings described in this document relate directly to the EM35x power settings accessible
via the Ember stack API.
22
23
24
25
26
27
28
29
30
31
32
33
34
©2009 Telegesis (UK) Ltd
No.
No.
No.
Frequency range
Frequency resolution
Lock time from off state, with correct VCO DAC settings
Relock time, channel change or Rx/Tx turnaround
Phase noise at 100kHz offset
Phase noise at 1MHz offset
Phase noise at 4MHz offset
Phase noise at 10MHz offset
V
V
Reset Filter Time constant
Reset Pulse width to guarantee a reset
Reset Pulse width guaranteed not to cause reset
CC
CC
POR release
POR assert
Power On Reset (POR) Specifications
Synthesiser Characteristics
nRESET Specifications
Table 11. Power On Reset Specifications
Table 10. Synthesiser Characteristics
Table 12. nReset Specifications
- 18 -
2400
Min
ETRX35x Preliminary Product Manual
0.62
0.45
Min
Min
2.1
26
0
-103dBc/Hz
-111dBc/Hz
-71dBc/Hz
-91dBc/Hz
Limit
Limit
Limit
Typ
11.7
Typ
0.95
0.65
Typ
12
ETRX351 AND ETRX357
Max
Max
0.85
2500 MHz
1.2
Max
16
100
100
1
Vdc
Vdc
µs
µs
µs
kHz
µs
µs
Unit
Unit
Unit