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VCA821 Status: ACTIVE

Wideband, > 40dB Adjust Range, Linear in dB Variable Gain Amplifier


      
         
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 VCA820 VCA821VCA822 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 Channels1  1  1  1  
Pin/Package10MSOP, 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 ChannelsS  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  
@ Mhz20  20  20  20  
BW @ G=+2(MHz)168  710  168  710  
0.1 dB BW Flatness(MHz)  28   
Operating Temp Range(Celsius)-40 to 85  -40 to 85  -40 to 85  -40 to 85  
 SamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • THS7530: Fully Differential, Continuously Variable Gain Amplifier
  • VCA810: High-Gain Adjustable Range, Wideband, Voltage-Controlled Amplifier
  • VCA820: 150MHz BW with linear in dB gain control variable gain amplifier
  • OPA656: Wideband, Unity Gain Stable FET-Input Operational Amplifier
  • OPA695: Ultra-Wideband, Current-Feedback Operational Amplifier with Disable
  • ADS831: 8-Bit, 80 MSPS ADC SE/Diff Inputs, Int/Ext References and Programmble Input Range

More Related Products

Product Information

Features

  • 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

X2Y is a trademark of X2Y Attenuators LLC.
All other trademarks are the property of their respective owners

Description

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. Operating from ±5V supplies, the gain control voltage for the VCA821 adjusts the gain linearly in dB as the control voltage varies from 0V to +2V. For example, set at a maximum gain of 20dB, the VCA821 provides 20dB, at VG = +2V, to less than -20dB at VG = 0V. The VCA821 offers excellent gain linearity. For a 20dB maximum gain, and a gain-control input voltage varying between +1V and +2V, the gain does not deviate by more than ±0.3dB (maximum at +25°C).

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
VCA821IDACTIVE-40 to 853.85 | 1kuSOIC (D) | 14 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
VCA821IDG4ACTIVE-40 to 853.85 | 1kuSOIC (D) | 14 View 50 | TUBE  
VCA821IDGSRACTIVE-40 to 853.50 | 1kuMSOP (DGS) | 10 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
VCA821IDGSRG4ACTIVE-40 to 853.50 | 1kuMSOP (DGS) | 10 View 2500 | LARGE T&R  Purchase Samples
VCA821IDGSTACTIVE-40 to 853.60 | 1kuMSOP (DGS) | 10 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
VCA821IDGSTG4ACTIVE-40 to 853.60 | 1kuMSOP (DGS) | 10 View 250 | SMALL T&R  
VCA821IDRACTIVE-40 to 853.50 | 1kuSOIC (D) | 14 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
VCA821IDRG4ACTIVE-40 to 853.50 | 1kuSOIC (D) | 14 View 2500 | LARGE T&R  Purchase Samples

* 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 9:44 AM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 4 WeeksVCA821ID
AsiaFarnell Asia 50
WPI 149
EuropeAvnet-SILICA 90
Farnell 50
WorldwideDigiKey 463
Mouser Electronics 885
TI Lead Time*: 4 WeeksVCA821IDG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksVCA821IDGSR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksVCA821IDGSRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksVCA821IDGST
WorldwideDigiKey 737
Mouser Electronics 248
TI Lead Time*: 20 WeeksVCA821IDGSTG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksVCA821IDR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksVCA821IDRG4
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
VCA821ID RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
VCA821IDG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
VCA821IDGSR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
VCA821IDGSRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
VCA821IDGST RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
VCA821IDGSTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
VCA821IDR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
VCA821IDRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* 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 VCA821 Help

Datasheet

Application Notes

Tools & Software

NamePart # Company Tool / Software Type
FREE DEM-VCA-MSOP-1ADEM-VCA-MSOP-1ATexas InstrumentsDevelopment Boards/EVMs
FREE DEM-VCA-SO-1BDEM-VCA-SO-1BTexas InstrumentsDevelopment Boards/EVMs

Simulation Models

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
THS7530 Fully Differential, Continuously Variable Gain Amplifier AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
VCA810 High-Gain Adjustable Range, Wideband, Voltage-Controlled Amplifier AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
VCA820 150MHz BW with linear in dB gain control variable gain amplifier AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
VCA2611 Dual, Variable Gain Amplifier with Low-Noise Preamp AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
TL026 Differential High-Frequency Amplifier with AGC AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
VCA2615 2-Channel Variable Gain Amplifier AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
VCA824 Wideband 420MHz, >40dB Gain Adjust Range, Linear in V/V Variable Gain Amplifier AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
VCA822 Wideband, >40dB Gain Adjust Range, Linear in V/V Variable Gain Amplifier AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
THS7001 70-MHz High-Speed Programmable-Gain Amplifier AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
VCA2619 Dual, Variable Gain Amplifier with Input Buffer AMPLIFIERS AND LINEAR-VARIABLE GAIN AMPLIFIER TI customers also evaluated this product.
OPA656 Wideband, Unity Gain Stable FET-Input Operational Amplifier HIGH SPEED AMPLIFIER-JFET/CMOS TI customers also evaluated this product.
OPA695 Ultra-Wideband, Current-Feedback Operational Amplifier with Disable HIGH SPEED AMPLIFIER-CURRENT FEEDBACK TI customers also evaluated this product.
ADS831 8-Bit, 80 MSPS ADC SE/Diff Inputs, Int/Ext References and Programmble Input Range DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.

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