ATR2406-PNSG Atmel, ATR2406-PNSG Datasheet - Page 21

• Manufacturer Part Number: ATR2406-PNSG
• Description: IC IF ISM TXRX 2.4GHZ 32QFN
• Manufacturer: Atmel

Specifications of ATR2406-PNSG

• Frequency: 2.4GHz
• Data Rate - Maximum: 1.152Mbps
• Modulation Or Protocol: DSSS, GFSK
• Applications: Wireless Game Controllers
• Power - Output: 4dBm
• Sensitivity: -93dBm
• Voltage - Supply: 2.9 V ~ 3.6 V
• Current - Receiving: 57mA
• Current - Transmitting: 42mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -10°C ~ 60°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -
• Other names: ATR2406-PNSGCT; ATR2406-PNSGCT

4779N–ISM–12/08
A successful packet exchange needs the following charge
Q = Q1 + Q2 + Q3 + Q4 + Q5 + Q6 + Q7 + Q8 + Q9 + Q10 = 192.47 µAs
As the described system is a FHSS system with 5 different channels, the system has to do this
up to five times before the packet is acknowledged by the base station. The average will be 2.5
times. In the case of an interfered environment, some more retries may be required; therefore, it
is assumed the factor will be 3. The power-up time is included only once, as the cycle will be
completed without powering up and down the handheld in order to be as power efficient as
possible.
Average current needed for a packet exchange:
Average current in active mode:
It is assumed the system uses a small battery with a capacity of 100 mAh. This is 100.000 µAh.
The most important factor is to get the power-down current as low as possible!
Example:
Assume a system where the handheld is used just 10 times per day.
and assuming the power-down current of this device is just 4 µA.
Overall power consumption is 8.1 µA
Battery lifetime will be around: 12345 hours = 514 days = 1.4 years.
I
I = 0.031 µA + 4 µA = 4.03 µA
Battery lifetime will be around 24807 hours = 1033 days = 2.83 years.
Power-down current is the main factor influencing the battery lifetime.
System Power Down current:
active
155 µAs + (37.5 µAs
If the device will be used 1000 times a day
Current ATmega88:
Current ATR2406:
Current VREG (+ ShutDown):
Assumed average power-down current is 5 µA.
= 0.031 µA
3) = 267.5 µAs
1.25 µA
1.0 µA
2.75 µA
3.1 µA
ATR2406
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