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VCA2615 Status: ACTIVE

2-Channel Variable Gain Amplifier


      
         
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 VCA2615
GBW(Typ)(MHz)42  
Vs(Min)(V)4.75  
Vs(Max)(V)5.25  
Number of Channels2  
Pin/Package48QFN, 48TQFP  
Available ChannelsD  
Gain Range(dB)52  
Approx. Price (US$) 8.05 | 1ku  
2nd Harmonic(dBc)-55  
3rd Harmonic(dBc)-55  
Operating Temp Range(Celsius)-40 to 85  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • VCA2611: Dual, Variable Gain Amplifier with Low-Noise Preamp
  • THS7530: Fully Differential, Continuously Variable Gain Amplifier
  • THS7002: 70-MHz High-Speed Programmable-Gain Amplifier, Dual
  • MSP430F1611: 16-bit Ultra-Low-Power MCU, 48kB Flash, 10240B RAM, 12-Bit ADC, Dual DAC, 2 USART, I2C, HW Mult, DMA
  • TMS320F28023: Piccolo Microcontroller
  • TPS74901: Single Output LDO, 3.0A, Adj. (0.8 to 3.6V), Programmable Soft-Start

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Product Information

Features

  • VERY LOW NOISE: 0.7nV/Hz
  • LOW-NOISE PREAMP (LNP)
    • Active Termination
    • Programmable Gains: 3, 12, 18, 22dB
    • Programmable Input Impedance (RF)
    • Buffered, Differential Outputs for CW Processing
    • Excellent Input Signal Handling Capabilities
  • 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
  • BANDWIDTH: 42MHz
  • HARMONIC DISTORTION: –55dB
  • 5V SINGLE SUPPLY
  • LOW-POWER: 154mW/Channel
  • POWER-DOWN MODES
  • APPLICATIONS
    • MEDICAL AND INDUSTRIAL ULTRASOUND SYSTEMS
      • Suitable for 10-Bit and 12-Bit Systems
    • TEST EQUIPMENT

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Description

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.

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.

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.

The VCA2615 operates on a single +5V supply and is available in a small QFN-48 (7×7mm) or TQFP package.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
VCA2615PFBRACTIVE-40 to 858.05 | 1kuTQFP (PFB) | 48 View 1000 | LARGE T&R 
VCA2615PFBTACTIVE-40 to 858.90 | 1kuTQFP (PFB) | 48 View 250 | SMALL T&R Purchase Samples
VCA2615RGZRACTIVE-40 to 858.05 | 1kuQFN (RGZ) | 48 View 2500 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
VCA2615RGZRG4ACTIVE-40 to 858.05 | 1kuQFN (RGZ) | 48 View 2500 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
VCA2615RGZTACTIVE-40 to 858.90 | 1kuQFN (RGZ) | 48 View 250 | SMALL T&R Download CAD Format for this Symbol
VCA2615RGZTG4ACTIVE-40 to 858.90 | 1kuQFN (RGZ) | 48 View 250 | SMALL T&R Download CAD Format for this Symbol

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 9:39 AM GMT, 06 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksVCA2615PFBR
WorldwideDigiKey >1k
TI Lead Time*: 20 WeeksVCA2615PFBT
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksVCA2615RGZR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksVCA2615RGZRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksVCA2615RGZT
EuropeAvnet-SILICA 167
WorldwideDigiKey >1k
Mouser Electronics 250
TI Lead Time*: 20 WeeksVCA2615RGZTG4
WorldwideDigiKey  Available
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
VCA2615PFBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
VCA2615PFBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
VCA2615RGZR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
VCA2615RGZRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
VCA2615RGZT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
VCA2615RGZTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for VCA2615 Help

Datasheet

Application Notes

User Guides

Tools & Software

NamePart # Company Tool / Software Type
Ultrasound Receive Chain Evaluation ModuleTI-TUS5000EVMTexas InstrumentsDevelopment Boards/EVMs
VCA2615EVM Evaluation ModuleVCA2615EVMTexas InstrumentsDevelopment Boards/EVMs

Part # Name Product Family Comments
VCA2617   2-Channel Variable Gain Amplifier   AMPLIFIERS AND LINEAR - VARIABLE GAIN AMPLIFIER   The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   
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