U3741BM-M2FLG3 TEMIC [TEMIC Semiconductors], U3741BM-M2FLG3 Datasheet

U3741BM-M2FLG3

Manufacturer Part Number

U3741BM-M2FLG3

Description

UHF ASK/FSK Receiver

Manufacturer

TEMIC [TEMIC Semiconductors]

Datasheet

1.U3741BM-M2FLG3.pdf (25 pages)

Current page: 1 of 25
Download datasheet (422Kb)

Rev. A1, 15-Oct-98

UHF ASK/FSK Receiver

Description

The U3741BM is a multi-chip PLL receiver device

supplied in an SO20 package. It has been specially

developed for the demands of RF low-cost data

transmission systems with low data rates from 1 kBaud to

10 kBaud (1 kBaud to 3.2 kBaud for FSK) in Manchester

or Bi-phase code. The receiver is well suited to operate

with the TEMIC PLL RF transmitter U2741B. Its main

Features

System Block Diagram

Keys

1 Li cell

Minimal external circuitry requirements, no RF

components on the PC board except adaptation to the

receiver antenna

High sensitivity, especially at low data rates

Sensitivity reduction possible even while receiving

Fully integrated VCO

Low power consumption due to configurable self

polling with a programmable timeframe check

Supply voltage 4.5 V to 5.5 V,

operating temperature range –40 C to 105 C

Single-ended RF input for easy adaptation to

l /4 antenna or printed antenna on PCB

Low-cost solution due to high integration level

M44Cx9x

Encoder

Remote control transmitter

U2741B

UHF ASK/FSK

XTO

Preliminary Information

Power

PLL

amp.

VCO

Figure 1. System block diagram

Antenna Antenna

applications are in the areas of telemetering, security

technology and keyless-entry systems. It can be used in

the frequency receiving range of f

450 MHz for ASK or FSK data transmission. All the

statements made below refer to 433.92-MHz and

315-MHz applications.

ESD protection according to MIL-STD. 883

(4KV HBM) except Pin POUT (2KV HBM)

High image frequency suppression due to 1 MHz IF

in conjunction with a SAW front-end filter. Up to

40 dB is thereby achievable with newer SAWs.

Programmable output port for sensitivity selection or

for controlling external periphery

Communication to m C possible via a single,

bi-directional data line

Power management (polling) is also possible by

means of a separate pin via the m C

2 different IF bandwidth versions are available

(300 kHz and 600 kHz)

U3741BM

LNA

Remote control receiver

Demod.

IF Amp

UHF ASK/FSK

VCO

PLL

U3741BM

Control

XTO

= 300 MHz to

1...3

1 (25)

14917

Related parts for U3741BM-M2FLG3

Related keywords

U3741BM-M2FLG3 datasheet
U3741BM-M2FLG3 data sheet
U3741BM-M2FLG3 pdf datasheet
U3741BM-M2FLG3 component
U3741BM-M2FLG3 part
U3741BM-M2FLG3 distributor
U3741BM-M2FLG3 RoHS
U3741BM-M2FLG3 datasheet download