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TRF1015

更新时间： 2024-11-17 22:19:11
品牌 Logo 应用领域
德州仪器 - TI 射频下变频器
页数 文件大小 规格书
21页 294K
描述
RF DOWNCONVERTER

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TRF1015 数据手册

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TRF1015  
RF DOWNCONVERTER  
SLWS021D– JUNE 1996 – REVISED JULY 1998  
DB PACKAGE  
(TOP VIEW)  
Low-Noise Amplifier (LNA), Radio  
Frequency (RF) Mixer, and  
Voltage-Controlled Oscillator (VCO)  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
PD1  
PD2  
AUX_LO–  
AUX_LO+  
OSC2  
MIX_OUT–  
MIX_OUT+  
MIX_IN  
MIX_GND  
LNA_GND  
LNA_IN  
Improved Compression Mode  
Conversion From RF to Intermediate  
Frequency (IF) on a Single Chip  
Suitable for Portable 900-MHz Cellular and  
Cordless Telephones  
VCO_GND  
OSC1  
LNA_V  
CC  
Low-Current Consumption Mode  
VCO_V  
LNA_OUT  
LNA_GND  
LNA_GND  
CC  
VCO_BYP  
LNA_GND  
20-Pin Plastic Shrink Small Outline (SSOP)  
Package  
Application-Selectable Internal or External  
Oscillator  
description  
The Texas Instruments (TI ) TRF1015 is a single-chip RF downconverter suitable for 900-MHz receiver  
applications. It combines a low-noise amplifier (LNA), a buffered voltage-controlled oscillator (VCO), and an RF  
mixer into a 20-pin SSOP package requiring very few external components.  
Minimal power consumption can be further reduced by placing the required modules into operate mode and the  
remaining modules into standby mode.  
Three modes of operation are provided for both the LNA and the mixer: standby, low current, and improved  
compression. The improved compression mode is suitable for applications that require full duplex capability.  
The improved compression mode is suitable for maintaining receiver sensitivity in the presence of large  
interfering signals and provides a low bit-error rate (BER) in digital modulation systems. The three modes of  
operation are selectable in accordance with the presence of a high or low signal on PD1 and PD2, as shown  
in Table 1.  
Table 1. Mode Control  
MODE  
PD1  
L
PD2  
L
Standby  
Low current  
H
H
Improved compression  
L
H
The LNA has a gain of 13 dB and a noise figure of 2.2 dB. LNA input and output characteristic impedances are  
50 Ω. The single balanced RF mixer has a gain of 9 dB with a single-sideband (SSB) noise figure of 10 dB. The  
VCO has a typical tuning range of 25 MHz using an external varactor and resonator. The VCO gain and tuning  
range can be adjusted to meet the phase-locked loop (PLL) design requirement, with an external shunt and  
feedback capacitors in series with the resonator. A buffered output of the VCO provides phase locking capability  
and can be configured for single-ended or differential operation.  
The TRF1015 is offered in the 20-pin SSOP (DB) package and is characterized for operation from –40°C  
to 85°C free-air temperature.  
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam  
during storage or handling to prevent electrostatic damage to the MOS gates.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
TI is a trademark of Texas Instruments Incorporated.  
Copyright 1998, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...21

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