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VCA2615PFBR

更新时间： 2024-11-02 12:01:43
品牌 Logo 应用领域
德州仪器 - TI 模拟IC信号电路
页数 文件大小 规格书
33页 1253K
描述
Dual, Low-Noise

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VCA2615PFBR 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：QFP
包装说明：TFQFP, TQFP48,.35SQ针数：48
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.33.00.01Factory Lead Time：1 week
风险等级：1.53模拟集成电路 - 其他类型：ANALOG CIRCUIT
JESD-30 代码：S-PQFP-G48JESD-609代码：e4
长度：7 mm湿度敏感等级：2
信道数量：2功能数量：2
端子数量：48最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：TFQFP封装等效代码：TQFP48,.35SQ
封装形状：SQUARE封装形式：FLATPACK, THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：260电源：5 V
认证状态：Not Qualified座面最大高度：1.2 mm
子类别：Other Analog ICs最大供电电压 (Vsup)：5.25 V
最小供电电压 (Vsup)：4.75 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7 mm
Base Number Matches：1

VCA2615PFBR 数据手册

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VCA2615  
SBOS316D − JULY 2005 − REVISED OCTOBER 2008  
Dual, Low-Noise  
Variable-Gain Amplifier with Preamp  
FD EATURES  
DESCRIPTION  
VERY LOW NOISE: 0.7nV//Hz  
The VCA2615 is a dual-channel, variable gain amplifier  
consisting of a Low-Noise Preamplifier (LNP) and a Variable-  
Gain Amplifier (VGA). This combination along with the device  
features makes it well-suited for a variety of ultrasound  
systems.  
D
LOW-NOISE PREAMP (LNP)  
− Active Termination  
− Programmable Gains: 3, 12, 18, 22dB  
− Programmable Input Impedance (R )  
F
− Buffered, Differential Outputs for CW  
Processing  
− Excellent Input Signal Handling  
Capabilities  
The LNP offers a high level of flexibility to adapt to a wide range  
of systems and probes. The LNP gain can be programmed to  
one of four settings (3dB, 12dB, 18dB, 22dB), while  
maintaining excellent noise and signal handling  
characteristics. The input impedance of the LNP can be  
controlled by selecting one of the built-in feedback resistors.  
This active termination allows the user to closely match the  
LNP to a given source impedance, resulting in optimized  
overall system noise performance. The differential LNP  
outputs are provided either as buffered outputs for further CW  
processing, or fed directly into the variable-gain amplifier  
(VGA). Alternatively, an external signal can be applied to the  
differential VGA inputs through a programmable switch.  
D
LOW-NOISE VARIABLE-GAIN AMPLIFIER  
− High/Low-Mode (0/+6dB)  
− 52dB Gain Control Range  
− Linear Control Response: 22dB/V  
− Switchable Differential Inputs  
− Adjustable Output Clipping-Level  
D
D
D
D
D
BANDWIDTH: 42MHz  
HARMONIC DISTORTION: −55dB  
5V SINGLE SUPPLY  
Following a linear-in-dB response, the gain of the VGA can be  
varied over a 52dB range with a 0.2V to 2.5V control voltage  
common to both channels of the VCA2615. In addition, the  
overall gain can be switched between a 0dB and +6dB  
postgain, allowing the user to optimize the output swing of  
VCA2615 for a variety of high-speed Analog-to-Digital  
Converters (ADCs). As a means to improve system overload  
recovery time, the VCA2615 provides an internal clipping  
function where an externally applied voltage sets the desired  
clipping level.  
LOW-POWER: 154mW/Channel  
POWER-DOWN MODES  
AD PPLICATIONS  
MEDICAL AND INDUSTRIAL ULTRASOUND  
SYSTEMS  
− Suitable for 10-Bit and 12-Bit Systems  
The VCA2615 operates on a single +5V supply and is  
available in a small QFN-48 (7x7mm) or TQFP package.  
D
TEST EQUIPMENT  
−
−
FB1 FB2 FB3 FB4 LNPOUT  
LNPOUT  
+
VCAIN  
+
VCAIN  
H/L  
(0dB or  
+6dB)  
Feedback  
Resistors  
+1  
+1  
LNPIN  
+
VCAOUT  
VCAOUT  
+
LNP  
VGA  
MUX  
−
−
LNPIN  
(3, 12, 18, 22dB)  
1/2 VCA2615  
52dB  
Range  
G1 G1  
VCAINSEL  
VCNTL VCLMP  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆꢇ ꢂꢈ ꢃ ꢉꢆꢉ ꢊꢋ ꢌꢍ ꢎ ꢏꢐ ꢑꢊꢍꢋ ꢊꢒ ꢓꢔ ꢎ ꢎ ꢕꢋꢑ ꢐꢒ ꢍꢌ ꢖꢔꢗ ꢘꢊꢓ ꢐꢑꢊ ꢍꢋ ꢙꢐ ꢑꢕꢚ ꢀꢎ ꢍꢙꢔ ꢓꢑꢒ  
ꢓ ꢍꢋ ꢌꢍꢎ ꢏ ꢑꢍ ꢒ ꢖꢕ ꢓ ꢊ ꢌꢊ ꢓ ꢐ ꢑꢊ ꢍꢋꢒ ꢖ ꢕꢎ ꢑꢛꢕ ꢑꢕ ꢎ ꢏꢒ ꢍꢌ ꢆꢕꢜ ꢐꢒ ꢇꢋꢒ ꢑꢎ ꢔꢏ ꢕꢋꢑ ꢒ ꢒꢑ ꢐꢋꢙ ꢐꢎ ꢙ ꢝ ꢐꢎ ꢎ ꢐ ꢋꢑꢞꢚ  
ꢀꢎ ꢍ ꢙꢔꢓ ꢑ ꢊꢍ ꢋ ꢖꢎ ꢍ ꢓ ꢕ ꢒ ꢒ ꢊꢋ ꢟ ꢙꢍ ꢕ ꢒ ꢋꢍꢑ ꢋꢕ ꢓꢕ ꢒꢒ ꢐꢎ ꢊꢘ ꢞ ꢊꢋꢓ ꢘꢔꢙ ꢕ ꢑꢕ ꢒꢑꢊ ꢋꢟ ꢍꢌ ꢐꢘ ꢘ ꢖꢐ ꢎ ꢐꢏ ꢕꢑꢕ ꢎ ꢒꢚ  
Copyright 2005−2008, Texas Instruments Incorporated  
www.ti.com  
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中文翻译

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VCA2615PFBR 替代型号

型号 品牌 替代类型 描述 数据表
VCA2615PFBT TI

完全替代

 Dual, Low-Noise
VCA2612Y/250 TI

类似代替

 Dual, VARIABLE GAIN AMPLIFIER with Low Noise Preamp

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