- 您现在的位置：买卖IC网 > PDF目录18827 > TRF1121IRGZT (Texas Instruments)IC PLL/VCO DUAL W/UP CONV 48VQFN PDF资料下载
参数资料
| 型号： | TRF1121IRGZT |
| 厂商： | Texas Instruments |
| 文件页数： | 12/31页 |
| 文件大小： | 0K |
| 描述： | IC PLL/VCO DUAL W/UP CONV 48VQFN |
| 产品培训模块： | RFID Technology and Applications |
| 标准包装： | 1 |
| 系列： | TRF1121 |
| 功能： | 升频器 |
| 频率： | 1.5GHz ~ 2.5GHz |
| RF 型： | UHF |
| 封装/外壳： | 48-VFQFN 裸露焊盘 |
| 包装： | 标准包装 |
| 产品目录页面： | 1035 (CN2011-ZH PDF) |
| 其它名称： | 296-19897-6 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页当前第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页
TRF1121
TRF1221
SLWS170B – APRIL 2005 – REVISED JANUARY 2008
www.ti.com
INTEGRATED SYNTHESIZERS
PLL Programming
Synthesizer #1 (UHF) and synthesizer #2 (S-band) are both integrated in the TRF1121/TRF1221. These two
PLLs can be programmed via a 3-wire serial bus (CLK, DATA, and EN) from the baseband processor. The timing
specifications are given in the ac timing table .
Synthesizer #2 has a step size of 1 MHz, while Synthesizer #1 offers a step size of 50 kHz, both assuming an
18-MHz reference frequency. Different reference frequencies yield different step sizes, many of which may be
non-integer.
NOTE:
If left unconnected, the DATA, CLK and EN pins rest on logic-high. EN is
level-sensitive.
Data is written to the PLLs according to the format in Figure 8 .
MSB
Byte 1
LSB
MSB
Byte 2
LSB
MSB
Byte 3
LSB
Address
Data
A[7]
A[6]
A[5]
A[4]
A[3]
A[2]
A[1]
A[0]
D[15]
D[14]
D[13]
D[12]
D[11]
D[10]
D[9]
D[8]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
Synth #1 N divider
Synth #2 N divider
Synth #1 S counter
Synth #2 S counter
Synth #1 F counter
Synth #2 F counter
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
PS
0
0
0
0
0
0
0
0
all other addresses reserved for future expansion
Figure 8. Serial Interface Data Format
The first eight bits are the appropriate address for the instruction set and the remaining 16 bits are the
instructions. The data is 24 bits long (3 bytes). Byte 1 is the address with A[7] being the MSB and A[0] being the
LSB. Byte 2 and 3 program the IC with synthesizer information and PS (Polarity Select Bit) information. D[15] is
the MSB and D[8] the LSB. The PS bit selects which edge of the reference is used for frequency comparison.
Improved spurious and phase noise is achieved by selecting the edge with the fastest rise or fall time. If PS = 1
the rising edge is used as the reference. If PS = 0, the falling edge is used.
The data of Figure 8 must be sent to the TRF1121 / TRF1221 to fully program synthesizers #1 and #2 and the
PS bit. Once the synthesizers and the PS bit are fully programmed, the clock signal should be turned off to
eliminate any clock-related spurious signals.
The LO1 (UHF oscillator) frequency of oscillation is set by Equation 1 :
f out = REFIN ′ ê 8 ′ (N + 3) - S -
é
?
F ù
18 ú ?
? é ? 2 ′ M ù ?
(1)
where:
F = synthesizer F counter
M = 10 for TRF1121 and 8 for 1221
N = synthesizer N divider
S = synthesizer S counter (see Figure 8 )
12
Submit Documentation Feedback
Copyright ? 2005–2008, Texas Instruments Incorporated
Product Folder Link(s): TRF1121 TRF1221
相关PDF资料 |
PDF描述 |
|---|---|
| V-15-3B6-K | SWTCH MINI SPST-NO 15A PIN PLNGR |
| MCC72-14IO8B | MOD THYRISTOR DUAL 1400V TO240AA |
| MCC95-08IO1B | MOD THYRISTOR DUAL 800V TO-240AA |
| D2FD-01L0-1T | SWITCH PIN PLUNG SPDT 0.1A 125V |
| D2FD-01L0-1H | SWITCH PIN PLUNG SPDT 0.1A 125V |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TRF1121IRGZTG3 | 功能描述:上下转换器 Dual PLL/VCO with IF Up-Converter RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128 |
| TRF1122 | 制造商:TI 制造商全称:Texas Instruments 功能描述:2.5-GHz Integrated Up-Converter |
| TRF1122_07 | 制造商:TI 制造商全称:Texas Instruments 功能描述:2.5-GHz Integrated Up-Converter |
| TRF1122EVM | 功能描述:射频开发工具 CHIPSET SOLUTION 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 |
| TRF1122IRTMR | 功能描述:上下转换器 RF Up-Converter RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128 |
发布紧急采购，3分钟左右您将得到回复。