micrf102 Micrel Semiconductor, micrf102 Datasheet - Page 2

• Manufacturer Part Number: micrf102
• Description: Qwikradio? Uhf Ask Transmitter
• Manufacturer: Micrel Semiconductor

Pin Confi guration
Pin Description
MICRF102
Pin Number
1
2
3
4
5
6
7
8
Pin Name
REFOSC
ANTN
STBY
ANTP
VDD
VSS
ASK
PC
REFOSC
VDD
VSS
PC
Pin Function
Power Control Input. The voltage at this pin should be set between 0.15V to
0.35V for normal operation.
Positive power supply input for the IC. This pin requires a large capacitor for
ripple decoupling. A 4.7µF is recommended.
This pin is the ground return for the IC. A power supply bypass capacitor
connected from V
This is the timing reference frequency which is the transmit frequency di-
vided by 32. Connect a crystal (mode dependent) between this pin and V
or drive the input with an AC-coupled 0.5V
Oscillator” section in this data sheet. The crystal needs to have a 10pF load
capacitance.
Input for transmitter stand by control pin is pulled to V
tion and V
in stand by.
Negative RF power output to drive the low side of the transmit loop antenna.
The RF output stage is tuned in the data transitions in the ASK pin.
Positive RF power output to drive the high side of the transmit loop antenna.
The RF output stage is tuned in the data transitions in the ASK pin.
Amplitude Shift Key modulation data input pin. For CW operation, connect
this pin to V
output RF stages.
1
2
3
4
8-Pin SOIC (M)
SS
2
DD
for stand-by mode. The device requires 0.0 volts to be placed
. Several transitions of highs and lows are required to tune the
DD
to V
8 ASK
7
6
5
SS
ANTP
ANTN
STBY
should have the shortest possible path.
PP
input clock. See “Reference
DD
for transmit opera-
December 2006
SS
,