收藏本站

TRF3705
www.ti.com
SLWS223A – AUGUST 2011 – REVISED OCTOBER 2011
APPLICATION INFORMATION
Application Schematic
Figure 65 shows a typical TRF3705 application schematic.
BBI
49.9 W
49.9 W
PD
1
18
VCC
LO
Input
GND
LOP
2
3
Thermal Pad
17
16
GND
RF OUT
6.8 pF
RF
Output
LOM
4
15
GND
0.2 pF
49.9 W
GND
GC
5
6
14
13
GND
GND
49.9 W
49.9 W
BBQ
Figure 65. Typical Application Circuit
Power Supply and Grounding
The TRF3705 is powered by supplying a nominal 3.3 V to pins 18 and 24. These supplies can be tied together
and sourced from a single clean supply. Proper RF bypassing should be placed close to each power supply pin.
Ground pin connections should have at least one ground via close to each ground pin to minimize ground
inductance. The PowerPAD ? must be tied to ground, preferably with the recommended ground via pattern to
provide a good thermal conduction path to the alternate side of the board and to provide a good RF ground for
the device. (Refer to PCB Design Guidelines for additional information.)
Baseband Inputs
The baseband inputs consist of the in-phase signal (I) and the Quadrature-phase signal (Q). The I and Q lines
are differential lines that are driven in quadrature. The nominal drive level is 1-V PP differential on each branch.
The baseband lines are nominally biased at 0.25-V common-mode voltage (V CM ); however, the device can
operate with a V CM in the range of 0 V to 0.5 V. The baseband input lines are normally terminated in 50 Ω ,
though it is possible to modify this value if necessary to match to an external filter load impedance requirement.
Copyright ? 2011, Texas Instruments Incorporated
Product Folder Link(s): TRF3705
Submit Documentation Feedback
21
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
TRF7970AEVM EVAL MODULE FOR TRF7970A
TRM-418-LT TRANSCEIVER RF 418MHZ LT SERIES
TRM-900-NT RF TXRX 915MHZ NT SERIES
TRX08GVP2540 TXRX OPT SCFF 8.5GB/S 850NM
TS-320240BRNO TCH PANEL 140X104 RESISTIVE MONO
TS-TFT3.5Z TOUCH PANEL 140X1.4.0 TFT
TS3-75B3 SENSOR THERMAL MOXIE NTC 75C
TSL26711FN IC PROXIMITY DETECTOR 6-DFN
相关代理商/技术参数
TRF3710 制造商:TI 制造商全称:Texas Instruments 功能描述:IQ DEMODULATOR
TRF3710EVM 功能描述:射频开发工具 TRF3710EVM Eval Mod RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
TRF3710IRGZR 功能描述:调节器/解调器 Hi Lin Direct Conv Quad Demodulator RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel
TRF3710IRGZRG4 功能描述:调节器/解调器 Hi Lin Direct Conv Quad Demodulator RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel
TRF3710IRGZT 功能描述:调节器/解调器 Hi Lin Direct Conv Quad Demodulator RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel
TRF3710IRGZTG4 功能描述:调节器/解调器 Hi Lin Direct Conv Quad Demodulator RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel
TRF371109 制造商:TI 制造商全称:Texas Instruments 功能描述:Direct Downconversion Receiver
TRF371109EVM 功能描述:射频开发工具 TRF371109 Eval Mod RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V