- 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:宽带、大于 40dB 调节范围、dB 线性可变增益放大器
- 点击这里打开及下载VCA821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 VCA821 device is a DC-coupled, wideband, linear in dB, continuously variable, voltage-controlled gain amplifier. It provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40 dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).
The VCA821 device internal architecture consists of two input buffers and an output current feedback amplifier stage integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between 6 dB and 32 dB. Operating from ±5-V supplies, the gain control voltage for the VCA821 device adjusts the gain linearly in dB as the control voltage varies from 0V to +2 V. For example, set at a maximum gain of 20 dB, the VCA821 device provides 20 dB, at VG = +2 V, to less than –20 dB at VG = 0 V. The VCA821 device offers excellent gain linearity. For a 20-dB maximum gain, and a gain-control input voltage varying between +1 V and +2 V, the gain does not deviate by more than ±0.3 dB (maximum at +25°C).
- 710-MHz Small-Signal Bandwidth (G = +2 V/V)
- 320 MHz, 4 VPP Bandwidth (G = +10 V/V)
- 0.1-dB Gain Flatness to 135 MHz
- 2500 V/μs Slew Rate
- > 40-dB Gain Adjust Range
- High Gain Accuracy: 20 dB ±0.3 dB
- High Output Current: ±90 mA
- PGA/VGA
- VGA
- Number of channels (#)
- 1
- BW @ Acl (MHz)
- 710
- Vs (Max) (V)
- 12
- Vs (Min) (V)
- 7
- Acl, min spec gain (V/V)
- 2
- Gain (Max) (dB)
- 40
- Slew rate (Typ) (V/us)
- 2500
- Operating temperature range (C)
- -40 to 85
- Features
- Analog Gain Set, Differential to Single-ended conversion
VCA821的完整型号有:VCA821ID、VCA821IDGST、VCA821IDR,以下是这些产品的关键参数及官网采购报价:
VCA821ID,工作温度:-40 to 85,封装:SOIC (D)-14,包装数量MPQ:50个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:NIPDAU,TI官网VCA821ID的批量USD价格:4.066(1000+)
VCA821IDGST,工作温度:-40 to 85,封装:VSSOP (DGS)-10,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VCA821IDGST的批量USD价格:3.896(1000+)
VCA821IDR,工作温度:-40 to 85,封装:SOIC (D)-14,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:NIPDAU,TI官网VCA821IDR的批量USD价格:3.388(1000+)
DEM-VCA-MSOP-1A — DEM-VCA-MSOP-1A
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