EM2420-STR Ember, EM2420-STR Datasheet - Page 49

• Manufacturer Part Number: EM2420-STR
• Description: IC RF TXRX ZIGBEE 2.4GHZ 48-QLP
• Manufacturer: Ember

Specifications of EM2420-STR

• Mfg Application Notes: EM2420
• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: ZigBee™
• Power - Output: -3dBm
• Sensitivity: -94dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 19.7mA
• Current - Transmitting: 17.4mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-QLP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -

be lost as leakage current reduces the
output voltage on the VREG_OUT pin below
1.6 V. The
before the voltage regulator is disabled.
Battery Monitor
The on-chip battery monitor enables
monitoring the unregulated voltage on the
VREG_IN pin. It gives status information
on the voltage being above or below a
Ember Part Number: 120-0049-000D
EM2420
should then be reset
Figure 26. Voltage regulator, simplified schematic
reference
bandgap
Internal
voltage
Enable / disable
1.25 V
Regulator
VREG_EN
EM2420 Datasheet
In applications where the internal voltage
regulator is not used, connect VREG_EN
and VREG_IN to ground. VREG_OUT shall
be left open. Note that the battery monitor
will not work when the voltage regulator is
not used.
programmable
schematic of the battery monitor is shown
in Figure 27.
VREG_IN
VREG_OUT
threshold.
EM2420
A
Page 49 of 84
simplified