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可編程與可變增益放大器 (PGA 與 VGA)

VCA8500

現行

具低雜訊前置放大器的 8 通道超低功耗可變增益放大器

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產品規格表

VCA8500

現行
產品規格表 立即訂購

產品詳細資料

PGA/VGA VGA Number of channels 8 Vs (max) (V) 3.47 Vs (min) (V) 3.14 BW at Acl (MHz) 55 Acl, min spec gain (V/V) 10 Gain (max) (dB) 51 Rating Catalog Operating temperature range (°C) -40 to 85
PGA/VGA VGA Number of channels 8 Vs (max) (V) 3.47 Vs (min) (V) 3.14 BW at Acl (MHz) 55 Acl, min spec gain (V/V) 10 Gain (max) (dB) 51 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGC) 64 81 mm² 9 x 9
  • Ultralow Power: 65mW/Channel
  • Low Noise: 0.8nV/Hz
  • Low-Noise Pre-Amp (LNP):
    • 20dB Fixed Gain
    • 250mVPP Linear Input Range
  • Variable Gain Amplifier:
    • Gain Control Range: 46dB
    • Selectable PGA Gain:
      20dB, 25dB, 27dB, 30dB
    • Fast Overload Recovery
    • Output Clamping Control
  • Integrated Low-Pass Filter:
    • Second-Order, Linear Phase
    • Bandwidth: 10MHz, 15MHz
  • High Accuracy:
    • Low Gain Error: ±0.5dB
    • Excellent Channel Matching: ±0.25dB
  • Distortion, HD2: -50dBc at 5MHz
  • Integrated CW Switch Matrix:
    • Easy Current Summing
  • Serial Control Interface
  • Small Package: QFN-64, 9×9mm

PowerPAD Is a trademark of Texas Instruments.

Infineon is a registered trademark of Infineon Technologies.

SPI is a trademark of Motorola.

All other trademarks are the property of their respective owners
  • Ultralow Power: 65mW/Channel
  • Low Noise: 0.8nV/Hz
  • Low-Noise Pre-Amp (LNP):
    • 20dB Fixed Gain
    • 250mVPP Linear Input Range
  • Variable Gain Amplifier:
    • Gain Control Range: 46dB
    • Selectable PGA Gain:
      20dB, 25dB, 27dB, 30dB
    • Fast Overload Recovery
    • Output Clamping Control
  • Integrated Low-Pass Filter:
    • Second-Order, Linear Phase
    • Bandwidth: 10MHz, 15MHz
  • High Accuracy:
    • Low Gain Error: ±0.5dB
    • Excellent Channel Matching: ±0.25dB
  • Distortion, HD2: -50dBc at 5MHz
  • Integrated CW Switch Matrix:
    • Easy Current Summing
  • Serial Control Interface
  • Small Package: QFN-64, 9×9mm

PowerPAD Is a trademark of Texas Instruments.

Infineon is a registered trademark of Infineon Technologies.

SPI is a trademark of Motorola.

All other trademarks are the property of their respective owners

The VCA8500 is an 8-channel variable gain amplifier consisting of a low-noise pre-amplifier (LNP) and a variable-gain amplifier (VGA). This combination, along with the device features, makes it ideal for a variety of ultrasound systems.

The LNP gain is fixed at 20dB, and has excellent noise and signal handling characteristics. The gain of the voltage-controlled attenuator can vary over a 46dB range with a 0V to 1.2V control voltage common to all channels of the VCA8500.

The post-gain amplifier (PGA) can be programmed for four gain settings: 20dB, 25dB, 27dB, or 30dB gain. As a means to improve system overload recovery time, the VCA8500 provides an internal clamping function. The PGA settings as well the clamp levels are controlled through the serial interface.

The VCA8500 is built on TI's BiCOM process and is available in a small QFN-64 PowerPAD package.

The VCA8500 is an 8-channel variable gain amplifier consisting of a low-noise pre-amplifier (LNP) and a variable-gain amplifier (VGA). This combination, along with the device features, makes it ideal for a variety of ultrasound systems.

The LNP gain is fixed at 20dB, and has excellent noise and signal handling characteristics. The gain of the voltage-controlled attenuator can vary over a 46dB range with a 0V to 1.2V control voltage common to all channels of the VCA8500.

The post-gain amplifier (PGA) can be programmed for four gain settings: 20dB, 25dB, 27dB, or 30dB gain. As a means to improve system overload recovery time, the VCA8500 provides an internal clamping function. The PGA settings as well the clamp levels are controlled through the serial interface.

The VCA8500 is built on TI's BiCOM process and is available in a small QFN-64 PowerPAD package.
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類型 標題 日期
* Data sheet 8-Channel, Ultralow-Power, Variable Gain Amplifier with Low-Noise Pre-Amp datasheet (Rev. A) 2008年 3月 19日
User guide VCA8500BOARD (Rev. B) 2013年 1月 25日

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ADS5282EVM — ADS5282 八通道、12 位元、65-MSPS 類比轉數位轉換器評估模組

特別說明：客戶若想評估 ADS528x，應訂購 ADS528xEVM、ADSDeSer-50EVM 及 ADSDESER-50EVM 轉接卡。

ADS5282EVM 提供了一個平台，可評估各種訊號、參考和電源條件下的八通道　ADS5282 類比轉數位轉換器 (ADC)。

EVM 提供了一個外部 SMA 連接器，用於連接八個類比輸入到 ADC 和 ADC 時鐘的輸入。ADC 可以使用單端時鐘或差動時鐘計時、並在 EVM 上佈建，讓使用者能使用單端 PECL 時鐘或差動變壓器耦合時鐘來評估 ADC。

EVM 透過高速、高密度 Samtec 輸出接頭提供數位輸出。數位輸出連接器直接與 TSW1200 (...)

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產品
可編程與可變增益放大器 (PGA 與 VGA)
VCA8500 — 具低雜訊前置放大器的 8 通道超低功耗可變增益放大器
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模擬型號

VCA8500 PSpice Model

SLOM161.ZIP (35 KB) - PSpice Model
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VCA8500 TINA-TI Reference Design

SBOM773.TSC (50 KB) - TINA-TI Reference Design
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VCA8500 TINA-TI Spice Model

SBOM774.ZIP (7 KB) - TINA-TI Spice Model
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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