ADF7021-VBCPZ-RL Analog Devices Inc, ADF7021-VBCPZ-RL Datasheet - Page 20

• Manufacturer Part Number: ADF7021-VBCPZ-RL
• Description: Narrow Band Transceiver 433/868/900 MHz
• Manufacturer: Analog Devices Inc

Specifications of ADF7021-VBCPZ-RL

• Frequency: 80MHz ~ 960MHz
• Data Rate - Maximum: 24 kbps
• Modulation Or Protocol: FSK
• Applications: ISM
• Power - Output: 13dBm
• Sensitivity: -125dBm
• Voltage - Supply: 2.3 V ~ 3.6 V
• Current - Receiving: 21.7mA
• Current - Transmitting: 27.1mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-VFQFN, CSP Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADF7021-V
Figure 29. 2FSK Sensitivity vs. Modulation Index and Correlator
Figure 30. 3FSK Receiver Sensitivity Using Viterbi Detection and
–100
–102
–104
–106
–108
–110
–112
–114
–116
–118
–1
–2
–3
–4
–5
–6
–7
0
–120 –118 –116 –114 –112 –110 –108 –106 –104 –102 –100
0
3FSK MODULATION
V
DATA RATE = 9.6kbps
f
RF FREQ = 868MHz
IFBW = 18.75kHz
DEV
DD
DISCRIMINATOR BANDWIDTH =
1× FSK FREQUENCY DEVIATION
VITERBI DETECTION
= 3.0V, TEMP = 25°C
= 2.4kHz
0.2
Discriminator Bandwidth
Threshold Detection
0.4
INPUT POWER (dBm)
MODULATION INDEX
DISCRIMINATOR BANDWIDTH =
2× FSK FREQUENCY DEVIATION
THRESHOLD DETECTION
0.6
RF FREQ = 860MHz
2FSK MODULATION
DATA RATE = 9.6kbps
IFBW = 25kHz
V
TEMPERATURE = 25°C
DD
0.8
= 3.0V
1.0
1.2
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Figure 31. 2FSK Receiver Sensitivity vs. LNA Gain/IF Filter Gain and Mixer
–100
–110
–120
–130
–70
–80
–90
Linearity Settings (Input IP3 at Each Setting Also Shown)
(LOW GAIN MODE)
IP3 = –3dBm
IP3 = –5dBm
LINEARITY
DEFAULT
3, 72
MIXER
HIGH MIXER
LINEARITY
LNA GAIN, FILTER GAIN
(MEDIUM GAIN MODE)
IP3 = –13.5dBm
IP3 = –9dBm
10, 72
2FSK MODULATION
DATA RATE = 9.6kbps
f
IFBW = 12.5kHz
DEMOD = CORRELATOR
SENSITIVITY @ BER = 10
DEV
= 4kHz
(HIGH GAIN MODE)
IP3 = –20dBm
IP3 = –24dBm
30, 72
–3