CMT2210LW データシートの表示（PDF） - Unspecified

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CMT2210LW

Low-Cost 315/433.92 MHz OOK Stand-Alone Receiver

Unspecified 

CMT2210LW

4. Typical Application Schematic

VDD

DOUT

1

C0

2

GND

VDD

3 DOUT

4 XOUT

RFIN 8

VCON 7

L2

VCOP 6

XIN 5

X1

C2

C3

ANT

C1

L1

Figure 9. Typical Application Schematic

Notes:

1. The general layout guidelines are listed below. For more design details, please refer to “AN107 CMT221x Schematic and

PCB Layout Design Guideline”.

 Use as much continuous ground plane metallization as possible.

 Use as many grounding vias (especially near to the GND pins) as possible to minimize series parasitic inductance

between the ground pour and the GND pins.

 Avoid using long and/or thin transmission lines to connect the components.

 Place C0 as close to the CMT2210LW as possible for better filtering.

2. The table below shows the BOM of typical application for 50 Ω antennas and other common used antennas in the market.

Table 7. BOM of 315/433.92 MHz Typical Application

Designator

U1

X1

L1

L2

C1

C0

C2, C3

Descriptions

CMT2210LW, low-cost

315/433.92 MHz OOK

stand-alone receiver

±20 ppm, SMD32*25 mm,

crystal

±5%, 0603 multi-layer chip

inductor

±5%, 0603 multi-layer chip

inductor

±0.25 pF, 0402 NP0, 50 V

±20%, 0402 X7R, 25 V

±5%, 0402 NP0, 50 V

Value (Match to 50Ω ANT) Value (Common Used ANT)

315 MHz 433.92 MHz 315 MHz 433.92 MHz

-

-

18.8744

26

33

27

33

22

5.6

3.3

0.1

27

18.8744

26

68

33

33

22

4.3

2.7

0.1

27

Unit

-

MHz

nH

nH

pF

uF

pF

Manufacturer

CMOSTEK

EPSON

Murata LQG18

Murata LQG18

Murata GRM15

Murata GRM15

Murata GRM15

Rev 0.8 | Page 9/20

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