LMH6517
- Accurate, 0.5dB Gain Steps
- 200Ω Resistive, Differential Input
- Low Impedance, Differential Output
- Disable Function for Each Channel
- Parallel Gain Control
- SPI Compatible Serial Bus
- Two Wire, Pulse Mode Control
- On Chip Register Stores Gain Setting
- Low Sensitivity of Linearity and Phase to Gain Setting
- Single 5V Supply Voltage
- Small Footprint WQFN Package
Key Specifications
- OIP3: 43dBm @ 200MHz
- Noise figure 5.5dB
- Gain step size of 0.5dB
- Gain step accuracy: 0.05dB
- Frequency Range of 1200 MHz
- Supply current 80mA per channel
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The LMH6517 contains two high performance, digitally controlled variable gain amplifiers (DVGA). It has been designed for use in narrowband and broadband IF sampling applications. Typically the LMH6517 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range.
Each channel of LMH6517 has an independent, digitally controlled attenuator and a high linearity, differential output amplifier. Each block has been optimized for low distortion and maximum system design flexibility. Each channel can be individually disabled for power savings.
The LMH6517 digitally controlled attenuator provides precise 0.5dB gain steps over a 31.5dB range. On chip digital latches are provided for local storage of the gain setting. Both serial and parallel programming options are provided. A Pulse mode is also offered where simple up or down commands can change the gain one step at a time.
The output amplifier has a differential output allowing large signal swings on a single 5V supply. The low impedance output provides maximum flexibility when driving filters or analog to digital converters.
The LMH6517 operates over the industrial temperature range of −40°C to +85°C. The LMH6517 is available in a 32-Pin, thermally enhanced, WQFN package.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | Low Pwr, Low Noise, IF& Basebnd, Dual 16-bit ADC Drvr w/Dig Cntrlld Gain datasheet (Rev. K) | 2013年 3月 13日 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017年 3月 28日 | ||
| Application note | AN-1719 Noise Figure Analysis Fully Differential Amplifier (Rev. A) | 2013年 5月 1日 | ||
| EVM User's guide | AN-2081 LMH6517EVAL-R1 Evaluation Board (Rev. B) | 2013年 5月 1日 | ||
| Application note | AN-2235 Ckt Brd Design for LMH6517/21/22 & Other H-Sp IF/RF F Amp (Rev. A) | 2013年 5月 1日 | ||
| EVM User's guide | AN-1942 LMH6517 Evaluation Board (Rev. B) | 2013年 4月 26日 | ||
| Application note | Using High Speed Diff Amp to Drive ADCs (Rev. A) | 2013年 4月 26日 | ||
| User guide | High-IF Sub-sampling Receiver Subsystem User Guide | 2012年 1月 27日 | ||
| Application note | A Walk Along the Signal Path (High-Speed Signal Path) | 2005年 3月 30日 |
設計與開發
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LMH6517EVAL-R1 — LMH6517 數位控制可變增益放大器評估板
The LMH6517EVAL evaluation board is designed to aid in the characterization of TI`s High Speed LMH6517 Digital Controlled Variable Gain Amplifier. Use the evaluation board as a guide for high frequency layout and as a tool to aid in device testing and characterization.
The LMH6517 DVGA has (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTV) | 32 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。