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參數(shù)資料
| 型號： | TRF1121_07 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Dual VCO/PLL Synthesizer With IF Up-Converter |
| 中文描述： | 雙的VCO / PLL頻率合成器與中頻直至轉(zhuǎn)換器 |
| 文件頁數(shù)： | 11/27頁 |
| 文件大?。?/td> | 1356K |
| 代理商： | TRF1121_07 |
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A[7]=MSB
A[6]
A[5]
D[1]
Data
Clock
EN
E
PWH
C
PWL
C
PWH
D[0] LSB
A[4]
CD
I
D
V
C
CE
L
E
L
C
Fout
REFIN
8
(N
3)
S
F
18
[2
M]
(1)
Fout
REFIN
8
(N
3)
S
F
18
(2)
TRF1121
TRF1221
SLWS170A–APRIL 2005–REVISED DECEMBER 2005
Figure 7. Serial Interface Timing Diagram
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
0
0
0
0
0
0
0
0
0
Synth #1 N divider
Synth #1 S counter
Synth #1 F counter
1
0
0
0
0
0
0
1
0
0
Synth #2 N divider
Synth #2 S 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.
Figure 7
needs to be sent to the TRF1121 / TRF1221 to fully program the 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
:
where M = 10 for TRF1121 and 8 for 1221
The TRF1121/TRF1221 contains two independent S-band VCOs and resonator circuits to provide additional
frequency range from one IC, however only one VCO can be enabled at a time. These two VCOs are referred to
as VCO2A and VCO2B (see the block diagram). The S-band PLL (LO2A or LO2B) frequency of oscillation is set
by the following equation:
where F has a range of 0 to 17. Both N and S have ranges that are limited more by the LO range than by their
digital count.
11
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|---|---|
| TRF1121EVM | 功能描述:射頻開發(fā)工具 CHIPSET SOLUTION RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
| TRF1121IRGZR | 功能描述:上下轉(zhuǎn)換器 Dual PLL/VCO with IF Up-Converter RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| TRF1121IRGZRG3 | 功能描述:上下轉(zhuǎn)換器 Dual PLL/VCO with IF Up-Converter RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| TRF1121IRGZT | 功能描述:上下轉(zhuǎn)換器 Dual PLL/VCO with IF Up-Converter RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| TRF1121IRGZTG3 | 功能描述:上下轉(zhuǎn)換器 Dual PLL/VCO with IF Up-Converter RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
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