MLX71120KLQ Melexis Inc, MLX71120KLQ Datasheet - Page 9

• Manufacturer Part Number: MLX71120KLQ
• Description: RCVR FSK/FM/ASK 32-QFN
• Manufacturer: Melexis Inc

Specifications of MLX71120KLQ

• Frequency: 300MHz ~ 930MHz
• Sensitivity: -108dBm
• Data Rate - Maximum: 100 kbps
• Modulation Or Protocol: ASK, FM, FSK
• Applications: General Remote Control, Garage Opener, RKE
• Current - Receiving: 8.1mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Features: RSSI Equipped
• Voltage - Supply: 2.1 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Other names: MLX71120A

1.12 Baseband Data Path
The baseband data path can be divided into a data filter section and a data slicer section.
The data filter input is either connected to the ASK or to the FSK demodulation output. Pin MODSEL can be
used to set the internal switch SW1 accordingly.
For ASK demodulation, the RSSI signal of the IFA is used. During FSK demodulation, SW1 is connected to
the FSK demodulator output.
The SLCSEL pin is used to control the internal switches depending on operating and slicer mode.
Pins DF1, DF2, DFO, SLC and DTAO are left floating during shutdown mode. So they are in a high-Z state.
39010 71120
Rev. 006
MODSEL
ASK
FSK
MODSEL
0
1
SLCSEL
SW1
100k
DF1
100k
PKDET _
OA2
PKDET+
100k
switches
S2
DF2
Control
logic
OA1
data filter
data slicer
S1
S3
VCC
S4
S5
S6
Page 9 of 30
DF0
PDN
CINT
PDP
DTAO
SLC
ASK demodulation
FSK demodulation
Fig. 4:
Description
Block diagram of the data path
FSK/FM/ASK Receiver
MLX71120
300 to 930MHz
Data Sheet
Jun/08