TH7110

315/433MHz

FSK/FM/ASK Receiver

TH7110 Data Sheet

Page 1 of 20

Nov. 2001

3901007110

Rev. 005

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.

Temperature Range

Package

TH7110

-40 °C to 85 °C

LQFP44

Application Examples

! General digital and analog 315 MHz or 433 MHz ISM band usage

! Low-power telemetry

! Alarm and security systems

! Keyless car and central locking

! Pagers

Technical Data Overview

! Input frequency range: 300 MHz to 450 MHz

! Power supply range: 2.5 V to 5.5 V for double conversion and 2.7 V to 5.5 V for single conversion

! Temperature range: -40 °C to +85 °C

! Operating current: 6.5 mA at low gain and 8.2 mA at high gain mode

! Standby current: < 100 nA

! Sensitivity: -111 dBm

1)

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

! Sensitivity: -104 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