VCA821 宽带、大于 40dB 调节范围、dB 线性可变增益放大器
The VCA821 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 40dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).
The VCA821 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 6dB and 32dB
|
VCA820 |
VCA821 |
VCA822 |
VCA824 |
| Iq per channel (Max) (mA) |
34 |
34 |
38 |
35 |
| Slew Rate (Typ) (V/us) |
1700 |
2500 |
1700 |
2500 |
| Io (Typ) (mA) |
160 |
60 |
160 |
60 |
| Vs (Min) (V) |
7 |
7 |
7 |
8 |
| Vs (Max) (V) |
12 |
12 |
12 |
12 |
| Number of Channels |
1 |
1 |
1 |
1 |
| Pin/Package |
10MSOP, 14SOIC |
10MSOP, 14SOIC |
10MSOP, 14SOIC |
10MSOP, 14SOIC |
| Diff Gain (%) |
0.05 |
0.05 |
0.05 |
|
| Diff Phase (deg) |
0.05 |
0.05 |
0.05 |
|
| Vio (Max) (mV) |
17 |
17 |
17 |
17 |
| Offset Voltage Drift (+/-) (Max) (uV/Degrees Celsius) |
30 |
30 |
30 |
30 |
| Available Channels |
S |
S |
S |
S |
| Vn at Flatband (Typ) (nV/rtHz) |
8.2 |
6 |
8.2 |
6 |
| Gain Range (dB) |
40 |
40 |
40 |
40 |
| Approx. Price (US$) |
2.80 | 1ku |
3.50 | 1ku |
2.80 | 1ku |
3.50 | 1ku |
| Iib (Max) (nA) |
25000 |
25000 |
25000 |
25000 |
| Noninverting Input Current Noise (pA/rtHz) |
2.6 |
2.6 |
2.6 |
2.6 |
| 2nd Harmonic (dBc) |
62 |
66 |
62 |
64 |
| 3rd Harmonic (dBc) |
68 |
63 |
68 |
61 |
| @ MHz |
20 |
20 |
20 |
20 |
| BW @ G=+2 (MHz) |
168 |
710 |
168 |
710 |
| 0.1 dB BW Flatness (MHz) |
|
|
28 |
|
| Operating Temperature Range (C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
VCA821 特性
- 710MHz SMALL-SIGNAL BANDWIDTH
(G = +2V/V)
- 320MHz, 4VPP BANDWIDTH (G = +10V/V)
- 0.1dB GAIN FLATNESS to 135MHz
- 2500V/µs SLEW RATE
- > 40dB GAIN ADJUST RANGE
- HIGH GAIN ACCURACY: 20dB ±0.3dB
- HIGH OUTPUT CURRENT: ±90mA
- APPLICATIONS
- AGC RECEIVERS with RSSI
- DIFFERENTIAL LINE RECEIVERS
- PULSE AMPLITUDE COMPENSATION
- VARIABLE ATTENUATORS
- VOLTAGE-TUNABLE ACTIVE FILTERS
VCA821 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 |
| VCA821ID |
ACTIVE |
-40 to 85 |
3.40 | 1ku |
SOIC (D) | 14 |
50 | TUBE |
|
| VCA821IDG4 |
ACTIVE |
-40 to 85 |
3.40 | 1ku |
SOIC (D) | 14 |
50 | TUBE |
|
| VCA821IDGSR |
ACTIVE |
-40 to 85 |
2.80 | 1ku |
MSOP (DGS) | 10 |
2500 | LARGE T&R |
|
| VCA821IDGSRG4 |
ACTIVE |
-40 to 85 |
2.80 | 1ku |
MSOP (DGS) | 10 |
2500 | LARGE T&R |
|
| VCA821IDGST |
ACTIVE |
-40 to 85 |
3.25 | 1ku |
MSOP (DGS) | 10 |
250 | SMALL T&R |
|
| VCA821IDGSTG4 |
ACTIVE |
-40 to 85 |
3.25 | 1ku |
MSOP (DGS) | 10 |
250 | SMALL T&R |
|
| VCA821IDR |
ACTIVE |
-40 to 85 |
2.80 | 1ku |
SOIC (D) | 14 |
2500 | LARGE T&R |
|
| VCA821IDRG4 |
ACTIVE |
-40 to 85 |
2.80 | 1ku |
SOIC (D) | 14 |
2500 | LARGE T&R |
|
VCA821 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 |
| VCA821ID |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
VCA821ID |
VCA821ID |
| VCA821IDG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
VCA821IDG4 |
VCA821IDG4 |
| VCA821IDGSR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
VCA821IDGSR |
VCA821IDGSR |
| VCA821IDGSRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
VCA821IDGSRG4 |
VCA821IDGSRG4 |
| VCA821IDGST |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
VCA821IDGST |
VCA821IDGST |
| VCA821IDGSTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
VCA821IDGSTG4 |
VCA821IDGSTG4 |
| VCA821IDR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
VCA821IDR |
VCA821IDR |
| VCA821IDRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
VCA821IDRG4 |
VCA821IDRG4 |
VCA821 应用技术支持与电子电路设计开发资源下载
- VCA821 数据资料 dataSheet 下载.PDF
- TI 德州仪器PGA/VGA选型与价格 . xls
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- 使您的仪器放大器设计达到最佳效果 (zhct011.PDF, 897 KB)
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- Driving High-Speed ADCs: Circuit Topologies and System-Level Parameter (slaa416a.HTM, 9 KB)
- A Numerical Solution to an Analog Problem (sboa124.HTM, 8 KB)
- TI 工业自动电机控制/驱动器解决方案 2011 (Rev. B) (PDF 1322 KB)
- 在 PSPICE 中使用德州仪器 (TI) SPICE 模型 (zhca088.HTM, 8 KB)
- PowerPAD™ Thermally Enhanced Package (slma002g.HTM, 8 KB)
- 运算放大器的单电源操作 (PDF 2174 KB)
- Tuning in Amplifiers (PDF 44 KB)
- Op Amp Performance Analysis (PDF 76 KB)
- An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
- Level Shifting Signals with Differential Amplifiers (PDF 23 KB)
- Operational Amplifier Macromodels: A Comparison (PDF 59 KB)
VCA821 工具与软件
| 培训内容 |
型号 |
软件/工具类型 |
| VCA821 评估模块 |
VCA821EVM |
开发电路板/EVM |
