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参数资料
| 型号： | TRF3702IRHCR |
| 厂商： | Texas Instruments |
| 文件页数： | 25/39页 |
| 文件大小： | 0K |
| 描述： | IC QUADRATURE MODULATOR 16-VQFN |
| 产品培训模块： | RFID Technology and Applications |
| 标准包装： | 3,000 |
| 功能： | 调制器 |
| LO 频率： | 1.5GHz ~ 2.5GHz |
| RF 频率： | 1.5GHz ~ 2.5GHz |
| P1dB： | 7dBm |
| 底噪： | -155dBm/Hz |
| 输出功率： | -2.5dBm |
| 电流 - 电源： | 170mA |
| 电源电压： | 4.5 V ~ 5.5 V |
| 测试频率： | 1.842GHz |
| 封装/外壳： | 16-VQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 配用： | TRF3702EVM-ND - TRF3702EVM |
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TRF3702
www.ti.com
SLWS149A – SEPTEMBER 2004 – REVISED AUGUST 2006
APPLICATION INFORMATION
DRIVING THE I, Q INPUTS
There are several ways to drive the four baseband inputs of the TRF3702 to the required amplitude and dc
offset. The optimal configuration depends on the end application requirements and the signal levels desired by
the designer.
The TRF3702 is by design a differential part, meaning that ideally the user should provide fully complementary
signals. However, similar performance in every respect can be achieved if the user only has single-ended
signals available. In this case, the IREF and QREF pins just need to have the VCM dc offset applied.
Implementing a Single-to-Differential Conversion for the I, Q inputs
In case differential I, Q signals are desired but not available, the THS4503 family of wideband, low-distortion,
fully differential amplifiers can be used to provide a convenient way of performing this conversion. Even if
differential signals are available, the THS4503 can provide gain in case a higher voltage swing is required.
Besides featuring high bandwidth and high linearity, the THS4503 also provides a convenient way of applying
the VCM to all four inputs to the modulator through the VOCM pin (pin 2). The user can further adjust the dc
levels for optimum carrier suppression by injecting extra dc at the inputs to the operational amplifier, or by
individually adding it to the four outputs. Figure 67 shows a typical implementation of the THS4503 as a driver
for the TRF3702. Gain can be easily incorporated in the loop by adjusting the feedback resistors appropriately.
For more details, see the THS4503 data sheet at www.ti.com.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TRF3702IRHCRG4 | 功能描述:调节器/解调器 1.5GHz-2.5GHz Quad Mod RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel |
| TRF3703 | 制造商:TI 制造商全称:Texas Instruments 功能描述:0.4-GHz TO 4-GHz QUADRATURE MODULATOR |
| TRF3703_07 | 制造商:TI 制造商全称:Texas Instruments 功能描述:0.4-GHz TO 4-GHz QUADRATURE MODULATOR |
| TRF3703_08 | 制造商:TI 制造商全称:Texas Instruments 功能描述:0.4-GHz TO 4-GHz QUADRATURE MODULATOR |
| TRF370315 | 制造商:TI 制造商全称:Texas Instruments 功能描述:0.35-GHz TO 4-GHz QUADRATURE MODULATORS |
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