AT86RF231-ZU Atmel, AT86RF231-ZU Datasheet - Page 89

• Manufacturer Part Number: AT86RF231-ZU
• Description: IC TXRX ZIGBE/802.15.4/ISM 32QFN
• Manufacturer: Atmel

Specifications of AT86RF231-ZU

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee, 6LoWPAN, RF4CE, SP100, WirelessHART™, ISM
• Applications: Industrial Monitoring and Control, Wireless Alarm and Security Systems
• Power - Output: -17dBm ~ 3dBm
• Sensitivity: -101dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 12.3mA
• Current - Transmitting: 14mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 2405 MHz to 2480 MHz
• Interface Type: SPI
• Noise Figure: 6 dB
• Output Power: 20 dB
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 12.3 mA
• Minimum Operating Temperature: - 40 C
• Modulation: OQPSK
• Protocol Supported: 802.15.4
• Transmitting Current: 11.6mA
• Data Rate: 2Mbps
• Frequency Range: 2.405GHz To 2.48GHz
• Modulation Type: O-QPSK
• Sensitivity Dbm: -101dBm
• Rf Ic Case Style: QFN
• No. Of Pins: 32
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

8.3
8.3.1
8.3.2
8.3.3
8111C–MCU Wireless–09/09
Received Signal Strength Indicator (RSSI)
Overview
Reading RSSI
Data Interpretation
The Received Signal Strength Indicator is characterized by:
The RSSI is a 5-bit value indicating the receive power in the selected channel, in steps of 3 dB.
No attempt is made to distinguish IEEE 802.15.4 signals from others, only the received signal
strength is evaluated. The RSSI provides the basis for an ED measurement, see
“Energy Detection (ED)” on page
In Basic Operating Mode the RSSI value is valid in any receive state, and is updated every
t
It is not recommended to read the RSSI value when using the Extended Operating Mode. The
automatically generated ED value should be used alternatively, see
tion (ED)” on page
The RSSI value is a 5-bit value indicating the receive power, in steps of 3 dB and with a range of
0 - 28.
An RSSI value of 0 indicates a receiver RF input power of P
the range of 1 to 28, the RF input power can be calculated as follows:
P
TR25
RF
• Minimum RSSI level is -91 dBm (RSSI_BASE_VAL)
• Dynamic range is 81 dB
• Minimum RSSI value is 0
• Maximum RSSI value is 28
= RSSI_BASE_VAL + 3
= 2 µs to register 0x06 (PHY_RSSI).
91.
*
(RSSI -1) [dBm]
91.
RF
< -91 dBm. For an RSSI value in
Section 8.4 “Energy Detec-
AT86RF231
Section 8.4
89