ETRX357 Telegesis Ltd, ETRX357 Datasheet - Page 17

• 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

10 A/D Converter Characteristics
The ADC is a first-order sigma-delta converter. For additional information on the ADC please refer
to section 10 of the EM35x datasheet.
1
2
3
4
11 AC Electrical Characteristics
V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
©2009 Telegesis (UK) Ltd
No.
No.
CC
= 3.0V, T
Frequency range
Sensitivity for 1% Packet Error Rate (PER)
Sensitivity for 1% Packet Error Rate (PER) BOOST MODE
Saturation (maximum input level for correct operation)
High-Side Adjacent Channel Rejection
(1% PER and desired signal –82dBm acc. to [1])
Low-Side Adjacent Channel Rejection
(1% PER and desired signal –82dBm acc. to [1])
2
(1% PER and desired signal –82dBm acc. to [1])
2
(1% PER and desired signal –82dBm acc. to [1])
Channel Rejection for all other channels
(1% PER and desired signal –82dBm acc. to [1])
802.11g rejection centred at +12MHz or –13MHz
(1% PER and desired signal –82dBm acc. to [1])
Co-channel rejection
(1% PER and desired signal –82dBm acc. to [1])
Relative frequency error
(2x40ppm required by [1])
Relative timing error
(2x40ppm required by [1])
Linear RSSI range
Output power at highest power setting
NORMAL MODE
BOOST MODE
Output power at lowest power setting
Error vector magnitude as per IEEE802.15.4
Carrier frequency error
PSD mask relative
3.5MHz distance from carrier
PSD mask absolute
3.5MHz distance from carrier
nd
nd
A/D resolution
A/D sample time for 5-bit conversion
A/D sample time for 12-bit conversion
Reference Voltage
High-Side Adjacent Channel Rejection
Low-Side Adjacent Channel Rejection
AMB
= 25°C, NORMAL MODE measured at 50Ω terminal load connected to the U.FL socket
Item
Receiver
Table 8. A/D Converter Characteristics
Table 9. AC Electrical Characteristics
Up to 12 bits
5.33µs
682µs
1.25V or Vcc
- 17 -
ETRX35x Preliminary Product Manual
2400
-120
-120
Min
-40
-20
-30
40
0
0
Value
Typ
-100
-101
-32
ETRX351 AND ETRX357
35
35
43
43
40
35
-6
3
8
5
Max
2500
120
120
-94
-95
14
40
MHz
dBm
dBm
dBm
dB
dB
dB
dB
dBc
ppm
ppm
dB
dBm
dBm
%
ppm
dB
dBm
Unit