MC33696FCAE Freescale Semiconductor, MC33696FCAE Datasheet - Page 73
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MC33696FCAE
Manufacturer Part Number
MC33696FCAE
Description
IC UHF RECEIVER PLL TUNED 32-QFN
Manufacturer
Freescale Semiconductor
Type
Transceiverr
Datasheet
1.MC33696FCAE.pdf
(80 pages)
Specifications of MC33696FCAE
Frequency
304, 315, 426, 434, 868 & 915MHz
Data Rate - Maximum
20kbps
Modulation Or Protocol
FSK, OOK
Applications
General Data Transfer
Power - Output
7.5dBm
Sensitivity
-106dBm
Voltage - Supply
2.7 V ~ 3.3 V, 4.5 V ~ 5.5 V
Current - Receiving
10.3mA
Current - Transmitting
13mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
32-QFN
Operating Frequency
915 MHz
Operating Supply Voltage
2.5 V or 3.3 V or 5 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 20 C
Mounting Style
SMD/SMT
Operating Temperature (min)
-20C
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Modulation Type
FSK/OOK
Memory Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
23
Pay attention to the following points and recommendations when designing the layout of the PCB.
Freescale Semiconductor
•
•
•
Ground Plane
— If you can afford a multilayer PCB, use an internal layer for the ground plane, route power
— Use at least a double-sided PCB.
— Use a large ground plane on the opposite layer.
— If the ground plane must be cut on the opposite layer for routing some signals, maintain
Power Supply, Ground Connection and Decoupling
— Connect each ground pin to the ground plane using a separate via for each signal; do not use
— Place each decoupling capacitor as close to the corresponding VCC pin as possible (no more
— Locate the VCCDIG2 decoupling capacitor (C10) directly between VCCDIG2 (pin 14) and
— GNDPA1 and GNDPA2 inductance to ground should be minimum. If possible, use two via for
RF Tracks, Matching Network and Other Components
— Minimize any tracks used for routing RF signals.
— Locate crystal X1 and associated capacitors C6 and C7 close to the MC33696. Avoid loops
— Use high frequency coils with high Q values for the frequency of operation (minimum of 15).
— Track between RFOUT and RFIN should be as short as possible to minimize lost in TX mode.
PCB Design Recommendations
supply and digital signals on the last layer, with RF components on the first layer.
continuity with another ground plane on the opposite layer and a lot of via to minimize
parasitic inductance.
common vias.
than 2–3 mm away).
GND (pin 16).
each pin.
occurring due to component size and tracks. Avoid routing digital signals in this area.
Validate any change of coil source.
The values indicated for the matching network have been computed and
tuned for the MC33696 RF Modules available for MC33696 evaluation.
Matching networks should be retuned if any change is made to the PCB
(track width, length or place, or PCB thickness, or component value). Never
use, as is, a matching network designed for another PCB.
MC33696 Data Sheet, Rev. 12
NOTE
PCB Design Recommendations
73