EM2420-STR Ember, EM2420-STR Datasheet - Page 65

• 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: -

RXCTRL1 (0x17) - Receive control register 1
15:14
13
12
11
10
9
8
7:6
5:4
3:2
1:0
Ember Part Number: 120-0049-000D
Bit
Field Name
-
RXBPF_LOCUR
RXBPF_MIDCUR
LOW_LOWGAIN
MED_LOWGAIN
HIGH_HGM
MED_HGM
LNA_CAP_ARRAY[1:0]
RXMIX_TAIL[1:0]
RXMIX_VCM[1:0]
RXMIX_CURRENT[1:0]
Reset
0
0
0
1
0
1
0
1
1
1
2
EM2420 Datasheet
R/W
W0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Reserved, write as 0.
Controls reference bias current to RX bandpass filters:
0: 4 uA (Default)
1: 3 uA
Controls reference bias current to RX bandpass filters:
0: 4 uA (Default)
1: 3.5 uA
LNA low gain mode setting in AGC low gain mode.
LNA low gain mode setting in AGC medium gain mode.
RX Mixers high gain mode setting in AGC high gain mode.
RX Mixers high gain mode setting in AGC medium gain mode.
Selects varactor array setting in the LNA
0: OFF
1: 0.1pF (x2) (Nominal)
2: 0.2pF (x2)
3: 0.3pF (x2)
Control of the receiver mixers output current.
0: 12 µA
1: 16 µA (Nominal)
2: 20 µA
3: 24 µA
Controls VCM level in the mixer feedback loop
0: 8 µA mixer current
1: 12 µA mixer current (Nominal)
2: 16 µA mixer current
3: 20 µA mixer current
Controls current in the mixer
0: 360 µA mixer current (x2)
1: 720 µA mixer current (x2)
2: 900 µA mixer current (x2) (Nominal)
3: 1260 µA mixer current (x2)
EM2420
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