PGA870
- Wideband +5-V Operation: 650-MHz Bandwidth
- Low Impedance, Voltage Mode Output
- Wide Gain Range: –11.5 dB to +20 dB
- Precise 0.5-dB Gain Steps
Step-to-Step Gain Error = ±0.03 dB - HD2: –93 dBc at 100 MHz
- HD3: –88 dBc at 100 MHz
- IMD3: –98 dBc at 100 MHz, –95 dBc at 200 MHz
- OIP3: +47 dBm at 100 MHz;
Exceeds +45 dBm for Frequencies to 300 MHz - Flexible Gain Control Interface:
- Supports latched and unlatched options
- Gain may be set in power-down state
- Fast setup and hold times: 2.5 ns
- Low Disable Current: 2 mA
- Pb-Free (RoHS-Compliant) and Green Package
- APPLICATIONS
- Programmable Gain IF Amplifier:
- Differential signal chains
- Single-ended to differential conversion
- Fast Gain Control Loops for:
- Test/measurement
- Digital radio signal chains
- ADC Driver for Wireless Base Station Signal Chains: GSM, WCDMA, MC-GSM
- Radar/Ranging Systems
PowerPAD is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
The PGA870 is a wideband programmable-gain amplifier (PGA) for high-speed signal chain and data acquisition systems. The PGA870 has been optimized to provide high bandwidth, low distortion, and low noise, making it ideally suited as a 14-bit analog-to-digital converter (ADC) driver for wireless base station signal chain applications. The wide gain range of –11.5 dB to +20 dB can be adjusted in 0.5-dB gain steps through a 6-bit control word applied to the parallel interface. The gain control interface may be configured as a level-triggered latch or an edge-triggered latch, or it may be placed in an unlatched (transparent) mode. In addition to the 6-bit gain control, the PGA870 contains a power-down pin (PD) that can be used to put the device into a low-current, power-down mode. In this mode, the quiescent current drops to 2 mA, but the gain control circuitry remains active, allowing the gain of the PGA870 to be set before device power-up. The PGA870 is offered in a QFN-28 PowerPAD™ package.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | High-Speed, Fully Differential, Programmable Gain Amplifier datasheet (Rev. A) | 2011年 2月 15日 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017年 3月 28日 | ||
| User guide | TSW3725 Evaluation Module | 2011年 10月 25日 | ||
| EVM User's guide | PGA870EVM User Guide (Rev. A) | 2010年 2月 3日 |
設計與開發
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PGA870EVM — PGA870 評估模組
The The PGA870EVM is an evaluation module (EVM) for the PGA870 wideband programmable gain amplifier (PGA) for high-speed signal chain and data acquisition systems.
The PGA870EVM allows for evaluation of all aspects of the PGA870 device. Complete circuit descriptions, schematic diagrams, and a bill (...)
TSW3085EVM — 寬頻發射訊號鏈評估板和參考設計
The TSW3085 Evalutaion Module is a circuit board that allows system designers to evaluate the combined performance of Texas Instruments' transmit signal chain with the LMK04806B (formally National Semiconductor) low noise clock generator/jitter cleaner. For ease of use as a complete RF transmit (...)
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RHD) | 28 | 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