TH7111ENG Melexis Inc, TH7111ENG Datasheet

TH7111ENG

Manufacturer Part Number

TH7111ENG

Description

IC RECEIVER FULL SIZE 44-LQFP

Manufacturer

Melexis Inc

Datasheet

1.TH7111ENG.pdf (20 pages)

Specifications of TH7111ENG

Rohs Status

RoHS non-compliant

Frequency

800MHz ~ 930MHz

Sensitivity

-109dBm

Data Rate - Maximum

80 kbps

Modulation Or Protocol

ASK, FM, FSK

Applications

Alarm and Security Systems, RKE, TPMS

Current - Receiving

9.2mA

Data Interface

PCB, Surface Mount

Antenna Connector

PCB, Surface Mount

Voltage - Supply

2.5 V ~ 5.5 V

Operating Temperature

-40°C ~ 85°C

Package / Case

44-LQFP

Features

Memory Size

Other names

TH7111

Current page: 1 of 20
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Features

! Double superhet architecture for high degree of image rejection

! FSK for digital data and FM reception for analog signal transmission

! FM/FSK demodulation either with phase-coincidence or PLL demodulator

! Low current consumption in active mode and very low standby current

! Switchable LNA gain for improved dynamic range

! AFC feature allows wide carrier frequency acceptance range

! RSSI allows signal strength indication and ASK detection

! Surface mount package LQFP44

Ordering Information

Part No.

TH7111

Application Examples

! General digital and analog 868 MHz or 915 MHz ISM band usage

! Low-power telemetry

! Alarm and security systems

! Keyless car and central locking

! Pagers

Technical Data Overview

! Input frequency range: 800 MHz to 930 MHz

! Power supply range: 2.5 V to 5.5 V for double conversion and 3.3 V to 5.5 V for single conversion

! Temperature range: -40 °C to +85 °C

! Operating current: 7.5 mA at low gain and 9.2 mA at high gain mode

! Standby current: < 100 nA

! Sensitivity: -109 dBm

! Sensitivity: -102 dBm

! Range of first IF: 10 MHz to 80 MHz

! Range of second IF: 455 kHz to 21.4 MHz

! Maximum input level: –10 dBm at ASK and 0 dBm at FSK

! Image rejection: > 65 dB (e.g. with SAW front-end filter and at 10.7 MHz 2

! Spurious emission: < -70 dBm

! Input frequency acceptance: 50 kHz (with AFC option)

! RSSI range: 70 dB

! Frequency deviation range: 5 kHz to 120 kHz

! Maximum data rate: 80 kbit/s NRZ

! Maximum analog modulation frequency: 15 kHz

TH7111 Data Sheet

3901007111

50 kHz FSK deviation, BER = 3 10

8 kHz FSK deviation, BER = 3 10

with 150 kHz second IF filter BW (incl. SAW front-end filter loss)

with 40 kHz second IF filter BW (incl. SAW front-end filter loss)

Temperature Range

-40 °C to 85 °C

-3

and phase-coincidence demodulation

Page 1 of 20

FSK/FM/ASK Receiver

IF)

Package

LQFP44

TH7111

868/915MHz

Nov. 2001

Rev. 005

Related parts for TH7111ENG

TH7111ENG Summary of contents

Page 1

Features ! Double superhet architecture for high degree of image rejection ! FSK for digital data and FM reception for analog signal transmission ! FM/FSK demodulation either with phase-coincidence or PLL demodulator ! Low current consumption in active mode and ...

Page 2

General Description The TH7111 receiver IC consists of the following building blocks: " PLL synthesizer (PLL SYNTH) for generation of the first and second local oscillator signals LO1 and LO2 " Parts of the PLL SYNTH are the high-frequency VCO1, ...

Page 3

Block Diagram TH7111 Data Sheet 3901007111 IN_DEM OUT_IFA RSSI FBC1 IN_IFA VEE_IF OUT_MIX2 VCC_MIX2 VCC_MIX1 IF1N IF1P VEE_MIX1 CAP_MIX1 VEE_LNA IN_MIX1 OUT_LNA GAIN_LNA VEE_LNAC Fig. 1: TH7111 block diagram Page TH7111 868/915MHz FSK/FM/ASK Receiver VCC_BIAS VEE_BIAS VREF ...

Page 4

Frequency Planning Frequency planning is straightforward for single-conversion applications because there is only one IF that might be chosen, and then the only possible choice is low-side or high-side injection of the LO1 signal (which is now the one and ...

Page 5

Pin Definition and Description Pin No. Name I/O Type 1 VREF analog output 4 OUT_LNA analog output 42 IN_LNA analog input 2 VEE_LNAC ground 3 GAIN_LNA analog input 5 VEE_LNA ground 6 IN_MIX1 analog input 7 CAP_MIX1 analog I/O 8 ...

Page 6

Pin No. Name I/O Type 11 VCC_MIX1 supply 12 VCC_MIX2 supply 13 OUT_MIX2 analog output 14 VEE_IF ground 15 IN_IFA analog input 16 FBC1 analog I/O 17 FBC2 analog I/O 18 VCC_IF supply 19 OUT_IFA analog I/O 20 IN_DEM analog ...

Page 7

Pin No. Name I/O Type 22 IN_MIX2 analog input 24 VCO2_B analog input 23 VCO2_E analog output 25 VCC_BIAS supply 26 OUT_OA analog output 27 OAN analog input 28 OAP analog input 29 RSSI analog output 30 VEE_BIAS ground TH7111 ...

Page 8

Pin No. Name I/O Type 31 OUTP analog output 32 OUTN analog output 33 VEE_PLL ground 34 VEE_RO ground 35 RO analog input 36 VCC_PLL supply 37 ENRX digital input 44 ENRO digital input 38 LF1 analog output 39 LF2 ...

Page 9

Technical Data Mode Configurations ENRX ENRO Note: ENRX and ENRO are pulled down internally Second Mixer Input IN_MIX2V External LO2 Ext. pull-down res. ( N/C LNA Gain Control V GAIN_LNA ...

Page 10

DC Characteristics all parameters under normal operating conditions, unless otherwise stated; typical values °C and V a Parameter Standby current Total supply current at low gain Total supply current at high gain Opamp input offset voltage ...

Page 11

Test Circuits FSK Reception VEE XTAL C1 RO VCC VCC ENRX LF1 R1 C3 LF2 VEE VEE IN_LNA C5 VCC VCC L2 ENRO L1 C4 TH7111 Data Sheet 3901007111 C15 C16 C17 VCC LQFP44 ...

Page 12

FSK test circuit component list to Fig. 2 Part Size Value / Type C1 0805 0805 0603 4 0603 2 0603 NIP C7 0603 1 0603 330 pF ...

Page 13

FSK Circuit with AFC and Ceramic Resonator Tolerance Compensation VEE XTAL C1 RO VCC VCC ENRX LF1 R1 C3 LF2 VEE VEE IN_LNA C5 VCC VCC L2 ENRO L1 C4 Fig. 3: Test circuit for FSK with AFC and resonator ...

Page 14

FSK test circuit with AFC component list to Fig. 3 Part Size Value / Type C1 0805 0805 0603 4 0603 2 0603 NIP C7 0603 1 0603 ...

Page 15

FM Reception VEE XTAL C1 RO VCC VCC ENRX LF1 R1 C3 LF2 VEE VEE IN_LNA C5 VCC VCC L2 ENRO L1 C4 TH7111 Data Sheet 3901007111 C15 C17 VCC C16 R3 LQFP44 ...

Page 16

FM test circuit component list to Fig. 4 Part Size Value / Type C1 0805 0805 0603 4 0603 2 0603 NIP C7 0603 1 0603 330 pF ...

Page 17

ASK Reception VEE XTAL C1 RO VCC VCC ENRX LF1 R1 C3 LF2 VEE VEE IN_LNA C5 VCC VCC L2 ENRO TH7111 Data Sheet 3901007111 R3 C14 VCC C13 LQFP44 Fig. ...

Page 18

ASK test circuit component list to Fig. 5 Part Size Value / Type C1 0805 0805 0603 4 0603 2 0603 NIP C7 0603 1 0603 330 pF ...

Page 19

Package Dimensions E A All Dimension in mm, coplanaríty < 0.1mm E1, D1 min 10.00 max All Dimension in inch, coplanaríty < 0.004” min 0.394 max TH7111 Data Sheet 3901007111 ...

Page 20

Your Notes Important Notice Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, ex- press, statutory, implied description regarding the information set forth herein ...

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