DR3300 Datasheet, PDF (4/5 Pages) RF Monolithics, Inc – 916.50 MHz Transceiver Module

Pin
Name
Description
9
VCC
This is the positive supply voltage pin for the module. The operating voltage range is 2.7 to 3.5 Vdc. It is also possible to use
Pin 1 as the Vcc input. Please refer to the Pin 1 description above.
This is a ground pin.
10
GND
CTR1 is connected to the CNTRL1 control pin on the transceiver. CTR1 and CTR0 select the transceiver operating modes.
CTR1 and CTR0 both high place the unit in the receive mode. CTR1 and CTR0 both low place the unit in the power-down
11
CTR1
(sleep) mode. CTR1 high and CTR0 low place the unit in the ASK transmit mode. CTR1 low and CTR0 high place the unit in
the OOK transmit mode (not used at 115.2 kbps). CTR1 is a high-impedance input (CMOS compatible). This pin must be held
at a logic level; it cannot be left unconnected. At turn on, the voltage on this pin and CTR0 should rise with VCC until VCC
reaches 2.7 Vdc (receive mode). Thereafter, any mode can be selected.
CTR0 is connected to the CNTRL0 control pin on the transceiver CTR0 is used with CTR1 to control the operating modes of
12
CTR0
the transceiver. CTR0 is a high-impedance input (CMOS compatible). This pin must be held at a logic level; it cannot be left
unconnected. At turn on, the voltage on this pin and CTR1 should rise with VCC until VCC reaches 2.7 Vdc (receive mode).
Thereafter, any mode can be selected.
13
RFIO
RFIO is the RF input/output pin. A matching circuit for a 50 ohm load (antenna) is implemented on the circuit board between
this pin and the transceiver SAW filter transducer.
This pin is the RF ground (return) to be used in conjunction with the RFIO pin. For example, when connecting the transceiver
14
RF GND module to an external antenna, the coaxial cable ground is connected this pin and the coaxial cable center conductor is con-
nected to RFIO.
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©2008 by RF Monolithics, Inc.
1 Mbps Application Circuit
R/T
3 Vdc
12 11 10 9 8
13
7
DR3300
14
6
12345
100 pF
3.3 K
100 pF
Data In
Data Out
Page 4 of 5
DR3300 - 4/8/08