- 制造厂商:TI
- 产品类别:放大器
- 技术类目:可编程和可变增益放大器(PGA 和 VGA)
- 功能描述:高速全差分可编程增益放大器
- 点击这里打开及下载PGA870的技术文档资料
- TI代理渠道,提供当日发货、严格的质量标准,满足您的目标价格
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.
- 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.
- PGA/VGA
- VGA
- Number of channels (#)
- 1
- BW @ Acl (MHz)
- 650
- Vs (Max) (V)
- 5.25
- Vs (Min) (V)
- 4.75
- Acl, min spec gain (V/V)
- 0.27
- Gain (Max) (dB)
- 20
- Architecture
- Fully Differential ADC Driver
- Slew rate (Typ) (V/us)
- 2900
- Operating temperature range (C)
- -40 to 85
- Features
- Shutdown, Digital Gain Set, Single-ended to Differential conversion
PGA870的完整型号有:PGA870IRHDR、PGA870IRHDT,以下是这些产品的关键参数及官网采购报价:
PGA870IRHDR,工作温度:-40 to 85,封装:VQFN (RHD)-28,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:NIPDAUAG,TI官网PGA870IRHDR的批量USD价格:4.211(1000+)
PGA870IRHDT,工作温度:-40 to 85,封装:VQFN (RHD)-28,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:NIPDAUAG,TI官网PGA870IRHDT的批量USD价格:5.053(1000+)
PGA870EVM — PGA870 evaluation module
PGA870EVM 是 PGA870 宽带可编程增益放大器 (PGA) 的评估模块 (EVM),适用于高速信号链和数据采集系统。
PGA870EVM 可评估 PGA870 器件的所有方面。用户手册文档中包含了完整的电路描述、原理图和物料清单 (BOM)。
TSW3085EVM — 宽带发送信号链评估板和参考设计
TSW3085 评估模块为电路板,可允许系统设计人员借助 LMK04806B(美国国家半导体的正式产品)低噪声时钟发生器/抖动消除器,评估德州仪器 (TI) 发射信号链的总性能。作为易于使用的完整射频发射解决方案,TSW3085EVM 包含用于为 DAC3482 数模转换器 (DAC) 以及 TRF3705 计时的 LMK04806B,可将来自 DAC 的 I/Q 输出向上变频为射频载体。
DAC3482 是双通道、超低功耗 16 位 1.25 GSPS DAC。
TRF3705 是高性能复数射频调制器,输出范围为 300 MHz 至 4 GHz。
LMK04806B (...)
PGA870 TINA-TI Reference Design
PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。借助?PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。
在?PSpice for TI 设计和仿真工具中,您可以搜索 TI (...)
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TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能,允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。TINA-TI 安装需要大约 500MB。直接安装,如果想卸载也很容易。我们相信您肯定会爱不释手。
TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能,但不支持完整版 TINA 所提供的某些其他功能。
如需获取可用 TINA-TI 模型的完整列表,请参阅:SpiceRack - 完整列表
需要 HSpice (...)