VCA2612 具有低噪声前置放大器的双路可变增益放大器
The VCA2612 is a highly integrated, dual receive channel, signal processing subsystem. Each channel of the product consists of a low noise preamplifier (LNP) and a Variable Gain Amplifier (VGA). The LNP circuit provides the necessary connections to implement Active Termination (AT), a method of cable termination which results in up to 4.6dB noise figure improvement. Different cable termination characteristics can be accommodated by utilizing the VCA2612\x92s switchable LNA feedback pins. The LNP has the ability to accept both differential and single-ended inputs, and generates a differential output signal. The LNP provides strappable gains of 5dB, 17dB, 22dB, and 25dB.
The output of the LNP can be accessed externally for further signal processing, or fed directly into the VGA
|
VCA2612 |
| Slew Rate (Typ) (V/us) |
300 |
| GBW (Typ) (MHz) |
80 |
| Vs (Min) (V) |
4.75 |
| Vs (Max) (V) |
5.25 |
| Number of Channels |
2 |
| Pin/Package |
48TQFP |
| BW @ Acl (MHz) |
40 |
| Available Channels |
D |
| Vn at Flatband (Typ) (nV/rtHz) |
3.5 |
| Gain Range (dB) |
5,17,22,25 |
| Approx. Price (US$) |
12.50 | 1ku |
| Iib (Max) (nA) |
1 |
| Noninverting Input Current Noise (pA/rtHz) |
0.35 |
| 2nd Harmonic (dBc) |
63 |
| 3rd Harmonic (dBc) |
71 |
| @ MHz |
5 |
| Crosstalk (-dB) |
68 |
| Operating Temperature Range (C) |
-40 to 85 |
VCA2612 特性
- LOW NOISE PREAMP:
- Low Input Noise: 1.25nV/Hz
- Active Termination Noise Reduction
- Switchable Termination Value
- 80MHz Bandwidth
- 5dB to 25dB Gain Range
- Differential Input /Output
- LOW NOISE VARIABLE GAIN AMPLIFIER:
- Low Noise VCA: 3.3nV/Hz, Differential Programming Optimizes Noise Figure
- 24dB to 45dB Gain
- 40MHz Bandwidth
- Differential Input /Output
- LOW CROSSTALK: 52dB at Max Gain, 5MHz
- HIGH-SPEED VARIABLE GAIN ADJUST
- SWITCHABLE EXTERNAL PROCESSING
VCA2612 芯片订购指南
| 器件 |
状态 |
温度 |
价格 |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| VCA2612Y/250 |
ACTIVE |
|
13.75 | 1ku |
TQFP (PFB) | 48 |
250 | SMALL T&R |
|
| VCA2612Y/250G4 |
ACTIVE |
|
13.75 | 1ku |
TQFP (PFB) | 48 |
250 | SMALL T&R |
|
| VCA2612Y/2K |
ACTIVE |
-40 to 85 |
12.50 | 1ku |
TQFP (PFB) | 48 |
2000 | LARGE T&R |
|
| VCA2612Y/2KG4 |
ACTIVE |
-40 to 85 |
12.50 | 1ku |
TQFP (PFB) | 48 |
2000 | LARGE T&R |
|
VCA2612 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| VCA2612Y/250 |
TBD |
Call TI |
Call TI |
VCA2612Y/250 |
VCA2612Y/250 |
| VCA2612Y/250G4 |
TBD |
Call TI |
Call TI |
VCA2612Y/250G4 |
VCA2612Y/250G4 |
| VCA2612Y/2K |
TBD |
Call TI |
Call TI |
VCA2612Y/2K |
VCA2612Y/2K |
| VCA2612Y/2KG4 |
TBD |
Call TI |
Call TI |
VCA2612Y/2KG4 |
VCA2612Y/2KG4 |
VCA2612 应用技术支持与电子电路设计开发资源下载
- VCA2612 数据资料 dataSheet 下载.PDF
- TI 德州仪器PGA/VGA选型与价格 . xls
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- TI 工业自动电机控制/驱动器解决方案 2011 (Rev. B) (PDF 1322 KB)
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- An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
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VCA2612 工具与软件
