th71072

Manufacturer Part Numberth71072
Description315/433mhz Ask Transmitter / Lo Source
ManufacturerETC-unknow
th71072 datasheet
 
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Features
! Fully integrated, PLL-stabilized VCO
! Flexible frequency range from 310 MHz to 450 MHz
! ASK achieved by on/off keying of internal
power amplifier
! FM possible with external varactor
! Wide power supply range from 2.2 V to 5.5 V
! High over-all frequency accuracy
! Very low standby current
Ordering Information
Part No.
TH71072
Application Examples
! Keyless car and central locking
! Low-power telemetry
! Alarm and security systems
! General digital data transmission
! General analog audio signal transmission
! Local oscillator signal generation
3901071072
Rev. 004
ASK Transmitter / LO Source
!
Adjustable output power range from
-15 dBm to -1 dBm
! Adjustable current consumption from
4.8 mA to 11.5 mA
! Single-ended RF output
! Clock output for µC drive
! Conforms to EN 300 220 and similar
standard
Temperature Range
-40 C° to 85 °C
Pin Description
LF
RO
ENTX
CKOUT
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TH71072
315/433MHz
Package
SOIC8
VEE
1
8
2
7
OUT
TH71072
VCC
6
3
PS/DATA
4
5
Data Sheet
Dec. 2001

th71072 Summary of contents

  • Page 1

    ... Clock output for µC drive ! Conforms to EN 300 220 and similar standard Temperature Range -40 C° °C Pin Description LF RO ENTX CKOUT Page TH71072 315/433MHz Package SOIC8 VEE OUT TH71072 VCC 6 3 PS/DATA 4 5 Data Sheet Dec. 2001 ...

  • Page 2

    ... PS. This turns the PA on and off and therefore leads to an ASK signal at the output. LO Source Many applications require a stable RF source. For this purpose, the TH71072 can be used without modulation as an easy-to-use, PLL-stabilized, continuous wave (CW) generator varying the ...

  • Page 3

    ... Block Diagram Fig. 1: TH71072 block diagram with external components 3901071072 Rev. 004 ASK Transmitter / LO Source Page TH71072 315/433MHz Data Sheet Dec. 2001 ...

  • Page 4

    ... PS/DATA 200 5 VCC VCC OUT 7 VEE VEE Page TH71072 315/433MHz Description connection to loop filter, charge pump output, VCO tuning input XOSC connection to XTAL, Colpitts type crystal oscillator mode control input, CMOS- compatible with internal pull- down clock output, ...

  • Page 5

    ... V cc Condition ENTX=0 I ENTX=1, V =1. ENTX pin HIGH ENTX pin LOW I ENTX=0 in ENTX=1 pd Page TH71072 315/433MHz ASK Transmitter / LO Source Min Max -0.3 7.0 -0.3 VCC+0.3 -1.0 1.0 -40 150 -1.0 +1.0 Min Max 2.2 5.5 -40 85 9.69 14 310 450 2.42 3.50 Min Typ Max 0.05 0.1 ...

  • Page 6

    ... VCO 5pF load from ”all OFF” to any on other mode = 7.5 11 4.7 4.7 1.1 0.9 8.6 7 -40 - Condition fundamental mode, AT load 0 m spur Page TH71072 315/433MHz ASK Transmitter / LO Source Min Typ Max - -44 -40 -60 -87 200 260 2 0 4.7 4.7 0.7 0.5 6.2 5.3 -7 -10 -45 - ...

  • Page 7

    ... ASK power-select resistor, not requirement at CW mode 10% ASK or CW mode power-select resistor 10% crystal pF, C 30ppm load calibration max 30ppm temp. Page TH71072 315/433MHz XTAL Description = 7 pF, ...

  • Page 8

    ... Spectrum Plots All plots depict TH71072‘s typical performance at V derived with the test circuit shown in Fig. 2. Fig. 3: Output spectrum with unmodulated carrier and harmonics Fig. 4: Output spectrum with unmodulated carrier, clock spurs and PLL reference spurs Fig. 5: Output spectrum with ASK modulation at 20 kbit/s NRZ 3901071072 Rev ...

  • Page 9

    ... Rev. 004 ASK Transmitter / LO Source Fig. 6: SOIC8 (Small Outline Package 3.81 5.80 1.32 0.10 3.99 6.20 1.72 0.25 0.150 0.2284 0.060 0.0040 0.05 0.014 0.157 0.2440 0.068 0.0098 Page TH71072 315/433MHz 1.27 0.36 0.41 0° 0.46 1.27 8° 0.016 0° 0.018 0.050 8° Data Sheet Dec. 2001 ...

  • Page 10

    ... Europe and Japan: Phone: +32 1361 1631 E-mail: sales_europe@melexis.com 3901071072 Rev. 004 ASK Transmitter / LO Source www.melexis.com Or for additional information contact Melexis Direct: All other locations: Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com Page TH71072 315/433MHz QS9000, VDA6.1 and ISO14001 Certified Data Sheet Dec. 2001 ...