TRF6900
SINGLE-CHIP RF TRANSCEIVER
SLAS213C – SEPTEMBER 1999 – REVISED MAY 2000
Single-Chip RF Transceiver for 868 MHz
and 915 MHz ISM Bands
Typical Output Power of 4.5 dBm
Typical Output Frequency Resolution of
230 Hz
850 MHz to 950 MHz Operation
FM/FSK Operation for Transmit and
Receive
Ultrafast Lock Times From DDS
Implementation
24-Bit Direct Digital Synthesizer (DDS) With
11-Bit DAC
Two Fully Programmable Operational
Modes
On-Chip VCO and PLL
2.2 V to 3.6 V Operation
On-Chip Reference Oscillator
Minimal External Components Required
Low Power Consumption
Fast Radio Strength Signal Indicator (RSSI)
Flexible Serial Interface to TI MSP430
Microcontroller
48-Pin Low Profile Plastic Quad Flat
Package (PQFP)
PQFP PACKAGE
(TOP VIEW)
48 47 46 45 44 43 42 41 40 39 38 37
LNA_GND
LNA_IN
DEM_VCC
DEM_TANK
DEM_TANK
RSSI_OUT
AMP_IN
36
35
34
33
32
31
30
29
28
27
26
25
1
2
LNA_GND
PA_VCC
PA_OUT
PA_GND
PLL_GND
PD_SET
3
4
5
AMP_CAP
AMP_OUT
S&H_CAP
DATA_OUT
DATA
6
7
8
9
PD_OUT2
PD_OUT1
LOCKDET
PLL_VCC
10
11
12
CLOCK
STROBE
13 14 15 16 17 18 19 20 21 22 23 24
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
