MICRF218AYQS Micrel Inc, MICRF218AYQS Datasheet - Page 2

• Manufacturer Part Number: MICRF218AYQS
• Description: IC RCVR QWIKRADIO 3.3V 16-QSOP
• Manufacturer: Micrel Inc

Specifications of MICRF218AYQS

• Frequency: 300MHz ~ 450MHz
• Sensitivity: -108dBm
• Data Rate - Maximum: 10 kbps
• Modulation Or Protocol: AM
• Applications: ISM, Garage Door Openers, RKE
• Current - Receiving: 5.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-QSOP
• Receiving Current: 5.5mA
• Data Rate: 10Kbps
• Modulation Type: ASK, OOK
• Frequency Range: 300MHz To 450MHz
• Sensitivity Dbm: -108dBm
• Rf Ic Case Style: QSOP
• No. Of Pins: 16
• Supply Voltage Range: 3V To
• Operating Frequency (max): 450000kHz
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 576-2997

September 2007
Micrel
Application Example
Pin Configuration
Pin Description
16-Pin
QSOP
1
2
3
4
5
6
7
8
9
GNDRF
GNDRF
IF_BW
Name
SHDN
SEL0
GND
VDD
RO1
ANT
Pin
ANT
PCB Pattern
L1
39nH
Pin Function
Reference resonator input connection to Colpitts oscillator stage. May also be driven by external
reference signal of 1.5V p-p amplitude maximum.
RF signal input from antenna. Internally AC-Coupled. It is recommended that a matching network
with an inductor to RF ground is used to improve ESD protection.
Positive supply connection for all chip functions.
IF bandwidth control logic input. Use VDD for Wide IF Bandwidth or VSS for Narrow IF Bandwidth.
This pin must not be left floating, must be tied to VDD or VSS.
Logic control input with active internal pull-up. Used in conjunction with SEL1 to control the
demodulator low pass filter bandwidth. (See filter table for SEL0 and SEL1 in application
subsection)
Shutdown logic control input. Active internal pull-up and must be pulled low for Normal Operation.
Negative supply connection for all chip functions except RF input.
Negative supply connection associated with ANT RF input.
Negative supply connection associated with ANT RF input.
1.5pF 50V
C1
6.8pF
C2
IF_BW CONTROL
L2
68nH
315MHz/315.802, 900Hz Baud Rate Example
0.1µF 16V
GNDRF
GNDRF
+3V
IF_BW
SHDN
SEL0
C3
RO1
ANT
Vdd
MICRF218AYQS
1
2
3
4
5
6
7
8
2
1
2
3
4
5
6
7
8
RO1
GNDRF
ANT
GNDRF
VDD
IF_BW
SEL0
SHDN
U1 MICRF218AYQS
16
15
14
13
12
11
10
9
RO2
NC
RSSI
CAGC
CTH
SEL1
DO
GND
9.8131MHz
CAGC
Y1
SEL1
RSSI
GND
RO2
CTH
DO
NC
16
15
14
13
12
11
10
9
DO
RSSI
C4
0.1µF
16V
C5
4.7µF
6.3V
[phone]
M9999-090607
MICRF218