PDF LMX3161 Data sheet ( Hoja de datos )

Número de pieza	LMX3161
Descripción	Single Chip Radio Transceiver
Fabricantes	National Semiconductor
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No Preview Available ! PRELIMINARY November 1999 LMX3161 Single Chip Radio Transceiver General Description The LMX3161 Single Chip Radio Transceiver is a monolithic, integrated radio transceiver optimized for use in a Digital En- hanced Cordless Telecommunications (DECT) system. It is fabricated using National’s ABiC V BiCMOS process (fT = 18 GHz). The LMX3161 contains phase locked loop (PLL), transmit and receive functions. The 1.1 GHz PLL block is shared be- tween transmit and receive section. The transmitter includes a frequency doubler, and a high frequency buffer. The re- ceiver consists of a 2.0 GHz low noise mixer, an intermediate frequency (IF) amplifier, a high gain limiting amplifier, a fre- quency discriminator, a received signal strength indicator (RSSI), and an analog DC compensation loop. The PLL, doubler, and buffers can be used to implement open loop modulation along with an external VCO and loop filter. The circuit features on-chip voltage regulation to allow supply voltages ranging from 3.0V to 5.5V. Two additional voltage regulators provide a stable supply source to external dis- crete stages in the Tx and Rx chains. The IF amplifier, high gain limiting amplifier, and discrimina- tor are optimized for 110 MHz operation, with a total IF gain of 85 dB. The single conversion receiver architecture pro- vides a low cost, high performance solution for communica- tions systems. The RSSI output may be used for channel quality monitoring. The Single Chip Radio Transceiver is available in a 48-pin 7mm X 7mm X 1.4mm PQFP surface mount plastic pack- age. Features n Single chip solution for DECT RF transceiver n RF sensitivity to −93 dBm; RSSI sensitivity to −100 dBm n Two regulated voltage outputs for discrete amplifiers n High gain (85 dB) intermediate frequency strip n Allows unregulated 3.0V–5.5V supply voltage n Power down mode for increased current savings n System noise figure 6.5 dB (typ) Applications n Digital Enhanced Cordless Telecommunications (DECT) n Personal wireless communications (PCS/PCN) n Wireless local area networks (WLANs) n Other wireless communications systems Block Diagram MICROWIRE™ is a trademark of National Semiconductor Corporation. TRI-STATE® is a registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS012815 DS012815-1 www.national.com 1 page Absolute Maximum Ratings (Notes 1, 2) Power Supply Voltage (VCC) VP Voltage on Any Pin with GND = 0V (VI) Storage Temperature Range (TS) Lead Temp. (solder, 4 sec)(TL) −0.3V to +6.5V −0.3V to +6.5V −0.3V to VCC +0.3V −65˚C to +150˚C +260˚C Recommended Operating Conditions Supply Voltage (VCC) 3.0V to 5.5V (VP) VCC to 5.5V Operating Temperature (TA) −10˚C to +70˚C Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Recommended Operating Conditions indicate condi- tions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test condi- tions, see the Electrical Characteristics section. The guaranteed specifica- tions apply only for the test conditions listed. Note 2: This device is a high performance RF integrated circuit with an ESD rating < KeV and is ESD sensitive. Handling and assembly of this device should only be done at ESD work stations. Electrical Characteristics The following specifications are guaranteed for VCC = 3.6V and TA = 25˚C, unless otherwise specified. Symbol Parameter Conditions Min Typ Max Unit Current Consumption IDD, RX IDD, TX IDD, PLL IPD MIXER fRF fIF ZIN ZOUT NF -Open-Loop Receive Mode -Open-Loop Transmit Mode -Closed-Loop PLL Mode -Power Down Mode RF Frequency Range IF Frequency Input Impedance, RFIN Output Impedance, Mixer Out Noise Figure (Single Side Band) PLL & TX chain powered down — 50 60 PLL & RX chain powered down — 27 37 RX & TX chain powered down —6 8 — — 70 fRF = 1.89 GHz, fIF = 110 MHz, f LO = 1780 MHz (fIN = 890 MHz) (Note 3) 1.7 — 2.0 (Note 4) — 110 — — 15-j5 — — 160-j70 — (Notes 5, 6) — 10 14 mA mA mA µA GHz MHz Ω Ω dB GC P1dB OIP3 Conversion Gain Input 1dB Compression Point Output 3rd Order Intercept Point (Note 5) (Note 5) (Note 5) 14 17 −24 −20 — 7.5 — dB — dBm — dBm FIN-RF Fin to RF Isolation FIN-IF Fin to IF Isolation RF–IF RF to IF Isolation IF AMPLIFIER NF Noise Figure FIN=890 MHz fIN=1780 MHz fIN=2670 MHz fIN=890 MHz fIN=1780 MHz fIN=2670 MHz PIN=0 to −85 dB fIN = 110 MHz (Note 7) — −30 — — −10.6 — — −30 — — −30 — — −30 — — −30 — — −30 — — 8 11 dB dB dB dB dB dB dB dB AV Gain ZIN Input Impedance ZOUT Output Impedance IF LIMITER Sens Limiter/Discriminator Sensitivity (Note 7) fIN = 110 MHz BER=10−3 15 24 — — 150–j120 — — 190–j20 — — −65 — dB Ω Ω dBm IFIN IF Limiter Input Impedance DISCRIMINATOR Disc Gain fIN = 110 MHz 1X Mode — 100–j300 — — 10 — Ω mV/˚ (mV/˚ of Phase Shift from Tank Circuit) 3X Mode — 33 — mV/˚ VOUT Discriminator Output Peak to Peak Voltage 1X Mode (Note 8) 3X Mode (Note 8) 80 160 — mV 400 580 — mV VOS Disc. Output DC Voltage DISCOUT Disc. Output Impedance Nominal (Note 10) 1.2 1.82 V — 300 — Ω 5 www.national.com 5 Page Function Register Programming Description (F-Latch) (Continued) Mode Control Bit F15 Model Control Description Demodulator DC level shift of 1.000V F16 Demodulator DC level shift of 0.500V F17 Demodulator DC level shift of 0.250V F18 Demodulator DC level shift of 0.125V Setting to “0” to Select No Shift No Shift No Shift No Shift Setting to “1” to Select Shift the DC Level by 1.000V Shift the DC Level by 0.500V Shift the DC Level by 0.250V Shift the DC Level by 0.125V Power Down Mode/Control Table Software Power Down Mode (F11=F12=0) Pin/Bit Setting to “0” means Setting to “1” means F6 Receiver ON Receiver OFF F7 Transmitter ON Transmitter OFF PLL PD PLL ON PLL OFF CE LMX3161 OFF LMX3161 ON Hardwire Power Down Mode (F11=F12=1) Pin/Bit Setting to “0” means Setting to “1” means Rx PD Receiver OFF Receiver ON Tx PD Transmitter OFF Transmitter ON PLL PD PLL ON PLL OFF CE LMX3161 OFF LMX3161 ON 11 www.national.com 11 Page

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