LMT2 Datasheet | Radiometrix

Features - - - - - - - - - - Conforms to EN 300 220-3 and EN 301 489-3 High performance double superhet. PLL synthesizer with TCXO quasi-dc (peak sampling) data recovery circuit (for enhanced performance on unbalanced datastreams) SAW front-end filter Data rates up to 5 kbps for standard module Usable range over 1km Fully screened. Low profile Feature -rich interface (RSSI, analogue and digital baseband) Re-programmable via RS232 interface Low power requirements Applications - - - - - - - - - Handheld terminals EPOS equipment, barcode scanners Data loggers Industrial telemetry and telemand In-building environmental monitoring and control High-end security and fire alarms DGPS systems Vehicle data up/download Heavy vehicle/machinery controls Technical Summary - - - - - - - - - Operating frequency: 433.875-434.650MHz (EU band) 458.525 - 459.1MHz (UK band) Other custom UHF bands 32 channels Transmit power: +10d Bm (10m W) / +20d Bm (100m W) Supply range: 3.1 - 15V (TX @ 10m W and RX), 4.1 - 15V (TX @ 100m W) Current consumption: 34m A @ 10m W, 90m A @ 100m W (transmit) and 20m A (receive) Data bit rate: 5kbps max. (standard module) Receiver sensitivity: -118d Bm (for 12 d B SINAD) Serial configuration by inverted RS232 at 3V CMOS level LMT2/LMR2 Data Sheet page 1 Radiometrix Ltd .. Radiometrix Ltd LMT2/LMR2 Data Sheet Figure 2: LMT2 block diagram page 2 Figure 3: LMT2 footpint (top view) .. Pin 1a 2a 3a 4a 5a 1b 2b 3b 4b 5b Pin description - LMT2 Name Vcc 0V TXE TXD No pin P0/PGM P1 P2 P3 No pin Function 3.1 - 15V power supply (@ 10m W) 4.1 - 15V power supply (@ 100m W) Ground Transmit Enable (active low) DC coupled input for 3V CMOS logic. Rin=47kΩ Not present in LMT2 Parallel Channel select LSB Serial frequency programming / configuration1 Parallel Channel select Parallel Channel select Parallel Channel select MSB Not present in LMT2 Notes: 1. Serial programming is by an inverted, CMOS logic level, 2400 baud RS232 datastream applied to the P0 pin. 2. Channel select...