VCA8500 Status: ACTIVE

8-Channel, Ultra-Low Power Variable Gain Amplifier With Low-Noise Pre-Amp

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Datasheet

8-Channel, Ultralow-Power, Variable Gain Amplifier with Low-Noise Pre-Amp (Rev. A) (vca8500.pdf, 1007 KB)
19 Mar 2008 Download

	VCA8500
GBW(Typ)(MHz)	70
Vs(Min)(V)	3.14
Vs(Max)(V)	3.47
Number of Channels	8
Pin/Package	64VQFN
BW @ Acl(MHz)	10, 15
Available Channels	O
Gain Range(dB)	20, 25, 27, 30
Approx. Price (US$)	40.00 \| 100u
Noninverting Input Current Noise(pA/rtHz)	3
Crosstalk(-dB)	55
Operating Temp Range(Celsius)	-40 to 85
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

VCA8617: 8-Channel Variable Gain Amplifier
THS7530: Fully Differential, Continuously Variable Gain Amplifier
VCA8613: VCA8613: 8-Channel Variable Gain Amplifier
AFE5804: 8-Channel Analog Front-End for Ultrasound
AFE5805: 8-Channel Analog Front-End for Ultrasound

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Product Information

Features

Ultralow Power: 65mW/Channel
Low Noise: 0.8nV/Hz
Low-Noise Pre-Amp (LNP):
- 20dB Fixed Gain
- 250mV_PP 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
APPLICATIONS
- Medical Imaging, Ultrasound Systems
  - Portable Systems
  - Low- and Mid-Range Systems

PowerPAD Is a trademark of Texas Instruments.

Infineon Is a trademark of Texas Instruments.

SPI is a trademark of Motorola.

All other trademarks are the property of their respective owners

Description

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.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Samples
VCA8500IRGCR	ACTIVE	-40 to 85	40.00 \| 100u	VQFN (RGC) \| 64	View	2000 \| LARGE T&R	Purchase Samples
VCA8500IRGCRG4	ACTIVE	-40 to 85	40.00 \| 100u	VQFN (RGC) \| 64	View	2000 \| LARGE T&R	Purchase Samples
VCA8500IRGCT	ACTIVE	-40 to 85	40.00 \| 100u	VQFN (RGC) \| 64	View	250 \| SMALL T&R
VCA8500IRGCTG4	ACTIVE	-40 to 85	40.00 \| 100u	VQFN (RGC) \| 64	View	250 \| SMALL T&R

* 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

	TI Inventory Status			Reported Distributor Inventory
VCA8500IRGCR	As of 8:45 AM GMT, 20 Nov 2008			As of 8:45 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*		20 Weeks	None Reported View Distributors
VCA8500IRGCRG4	As of 8:45 AM GMT, 20 Nov 2008			As of 8:45 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*		20 Weeks	None Reported View Distributors
VCA8500IRGCT	As of 8:45 AM GMT, 20 Nov 2008			As of 8:45 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*		20 Weeks	Americas	DigiKey	575
VCA8500IRGCTG4	As of 8:45 AM GMT, 20 Nov 2008			As of 8:45 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*		20 Weeks	None Reported View Distributors
View all Distributors

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** 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 Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
VCA8500IRGCR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
VCA8500IRGCRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
VCA8500IRGCT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
VCA8500IRGCTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View

* 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

Datasheets

8-Channel, Ultralow-Power, Variable Gain Amplifier with Low-Noise Pre-Amp (Rev. A) (vca8500.pdf, 1007 KB)
19 Mar 2008 Download

Application Notes

Shelf-Life Evaluation of Lead-Free Component Finishes (szza046.htm, 8 KB)
24 May 2004 Abstract
Thermal and Electrical Properties of Selected Packaging Materials (sbfa010.htm, 8 KB)
04 Oct 2000 Abstract

User Guides

VCA8500BOARD (slou216.htm, 8 KB)
10 Jan 2008 Abstract

Tools & Software

Name	Part #	Company	Tool / Software Type
ADS5281EVM Evaluation Board	ADS5281EVM	Texas Instruments	Development Boards/EVMs
ADS5282EVM Evaluation Module	ADS5282EVM	Texas Instruments	Development Boards/EVMs
ADS5287EVM Evaluation Module	ADS5287EVM	Texas Instruments	Development Boards/EVMs
VCA8500BOARD 8-Channel VGA + LNP Devlopment Board	VCA8500BOARD	Texas Instruments	Development Boards/EVMs
VCA8500BOARD SOFTWARE(sloc101.zip, 2905 KB ) 16 Jan 2008 zip

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Complementary Products - Can be used with VCA8500
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
AFE5804	8-Channel Analog Front-End for Ultrasound	ANALOG FRONT ENDS-Imaging	TI customers also evaluated this product.
AFE5805	8-Channel Analog Front-End for Ultrasound	ANALOG FRONT ENDS-Imaging	TI customers also evaluated this product.

Related End Equipments

Ultrasound System

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