VCA2617 TI | Alldatasheet
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Technical content
FEATURES
/C0068INDEPENDENT CHANNEL CONTROLS: − Gain Range: 48dB − Clamping Levels − Post-Gain: 0, +6dB /C0068LOW NOISE: 4.1nV//C0047Hz /C0068LOW POWER: 52mW/Channel /C0068BANDWIDTH: 50MHz /C0068HARMONIC DISTORTION: −53dBc at 5MHz /C0068CROSSTALK: −61dB at 5MHz /C00685V SINGLE SUPPLY /C0068POWER-DOWN MODE /C0068SMALL QFN-32 PACKAGE (5x5mm)
APPLICATIONS
/C0068MEDICAL AND INDUSTRIAL ULTRASOUND SYSTEMS − Suitable for 10-Bit and 12-Bit Systems /C0068TEST EQUIPMENT /C0068SONAR
DESCRIPTION
The VCA2617 is a dual-channel, continuously variable, voltage-controlled gain amplifier well-suited for a variety of ultrasound systems as well as applications in proximity detectors and test equipment. The VCA2617 uses a true variable-gain amplifier architecture, achieving very good noise performance at low gains, while not sacrificing high gain distortion performance. Following a linear-in-dB response, the VCA2617 gain can be varied over a 48dB range with a 0.2V to 2.3V control voltage. Two separate high-impedance control inputs allow for a channel independent variation of the gains. Each channel of the VCA2617 can be configured to provide a gain range of −10dB to 38dB, or −16dB to 32dB, depending on the gain select pin (HG ). This post-gain feature allows the user to optimize the output swing of VCA2617 for a variety of high-speed analog-to-digital converters (ADC). As a means to improve system overload recovery time, the VCA2617 also provides an internal clamping circuitry where an externally applied voltage sets the desired output clamping level. The VCA2617 operates on a single +5V supply while consuming only 52mW per channel. It is available in a small QFN-32 package (5x5mm).
RELATED PRODUCTS
VCA2615 Dual, Low-Noise, Variable-Gain Amplifier with Preamp V−I V CNTL B Gain Select B C EXT BV CLMP B Out B− Out A+ Out A− I−V In A− In A+ Clamping Circuitry In B− In B+ V−I V CNTL A V CLMP A Gain Select A C EXT A I−V Out B+ Clamping Circuitry VCA2617 SBOS326 −AUGUST 2005 Dual, Variable Gain Amplifier www.ti.com Copyright 2005, Texas Instruments Incorporated 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. /C0080/C0082/C0079/C0068/C0085/C0067/C0084/C0073/C0079/C0078 /C0068/C0065/C0084/C0065 /C0105/C0110/C0102/C0111/C0114/C0109/C0097/C0116/C0105/C0111/C0110 /C0105/C0115 /C0099/C0117/C0114/C0114/C0101/C0110/C0116 /C0097/C0115 /C0111/C0102 /C0112/C0117/C0098/C0108/C0105/C0099/C0097/C0116/C0105/C0111/C0110 /C0100/C0097/C0116/C0101/C0046 /C0080/C0114/C0111/C0100/C0117/C0099/C0116/C0115 /C0099/C0111/C0110/C0102/C0111/C0114/C0109 /C0116/C0111 /C0115/C0112/C0101/C0099/C0105/C0102/C0105/C0099/C0097/C0116/C0105/C0111/C0110/C0115 /C0112/C0101/C0114 /C0116/C0104/C0101 /C0116/C0101/C0114/C0109/C0115 /C0111/C0102 /C0084/C0101/C0120/C0097/C0115 /C0073/C0110/C0115/C0116/C0114/C0117/C0109/C0101/C0110/C0116/C0115 /C0115/C0116/C0097/C0110/C0100/C0097/C0114/C0100 /C0119/C0097/C0114/C0114/C0097/C0110/C0116/C0121/C0046 /C0080/C0114/C0111/C0100/C0117/C0099/C0116/C0105/C0111/C0110 /C0112/C0114/C0111/C0099/C0101/C0115/C0115/C0105/C0110/C0103 /C0100/C0111/C0101/C0115 /C0110/C0111/C0116 /C0110/C0101/C0099/C0101/C0115/C0115/C0097/C0114/C0105/C0108/C0121 /C0105/C0110/C0099/C0108/C0117/C0100/C0101 /C0116/C0101/C0115/C0116/C0105/C0110/C0103 /C0111/C0102 /C0097/C0108/C0108 /C0112/C0097/C0114/C0097/C0109/C0101/C0116/C0101/C0114/C0115/C0046 All trademarks are the property of their respective owners.
/C0086/C0067/C0065/C0050/C0054/C0049/C0055 SBOS326 −AUGUST 2005 www.ti.com ABSOLUTE MAXIMUM RATINGS (1) (1)Stresses above those listed under Absolute Maximum Ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may affect device reliability. This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. PACKAGE/ORDERING INFORMATION (1) PRODUCT PACKAGE-LEAD PACKAGE DESIGNATOR SPECIFIED TEMPERATURE RANGE PACKAGE MARKING ORDERING NUMBER TRANSPORT MEDIA, QUANTITY VCA2617 QFN−32 RHB −40°C to +85°C VCA2617 VCA2617RHBT Tape and Reel, 250 VCA2617 QFN−32 RHB −40°C to +85°C VCA2617 VCA2617RHBR Tape and Reel, 3000 (1)For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com.
/C0086/C0067/C0065/C0050/C0054/C0049/C0055 SBOS326 −AUGUST 2005 www.ti.com
ELECTRICAL CHARACTERISTICS
All specifications at TA = +25°C, VDD = 5V, load resistance = 500Ω on each output to ground, differential output (1VPP ), CA, CB = 3.9µF, single-ended input configuration, fIN = 5MHz, HG = Low (High-Gain Mode), VCNTL = 2.3V, unless otherwise noted. VCA2617 PARAMETER CONDITIONS MIN TYP MAX UNIT VARIABLE GAIN AMPLIFIER Input Resistance Single-Ended 300 kΩ Input Capacitance 8 pF Maximum Input Voltage Linear Operation(1); Each Input Differential 2.0 VPP Single-Ended 1.0 VPP Input Voltage Noise Gain = 45dB, RS = 0Ω 4.1 nV/√Hz Input Current Noise Independent of Gain 1 pA/√Hz Noise Figure 13.3 dB Input Common-Mode Voltage Internal 2.5 V Bandwidth 50 MHz Clipping Voltage Range (VCLMP ) 0.25 to 2.6 V Clipping Voltage Variation VCLMP = 0.5V, VCAOUT = 1.0VPP ±75 mV Maximum Capacitive Output Loading 50Ω in Series 80 pF Slew Rate 100 V/µs Maximum Output Signal(1) 6 VPP Output Common-Mode Voltage 2.5 V Output Impedance at 5MHz, Single-Ended, Either Output 3 Ω Output Short-Circuit Current 60 mA 2nd-Harmonic Distortion VOUT = 1VPP, VCNTL = 1.5V −43 −53 dBc 3rd-Harmonic Distortion VOUT = 1VPP, VCNTL = 1.5V −43 −62 dBc Overload Distortion (2nd-Harmonic) Input Signal = 1VPP, VCNTL = 2V −40 dBc Crosstalk −61 dB Delay Matching ±1 ns ACCURACY Gain Slope VCNTL = 0.4V to 2.0V 22 dB/V Gain Error(2) VCNTL = 0.4V to 2.0V −2 ±0.9 +2 dB Gain Range VCNTL = 0.2V to 2.3V 48 dB VCNTL = 0.4V to 2.0V 35.5 dB Gain Range (HG) HG = 0 (+6dB); VGA High Gain; VCNTL = 0.2V to 2.3V −10 to +38 dB HG = 1 (0dB); VGA Low Gain; VCNTL = 0.2V to 2.3V −16 to +32 dB Output Offset Voltage, Differential ±50 mV Channel-to-Channel Gain Matching VCNTL = 0.4V to 2.0V ±0.8 dB GAIN CONTROL INTERFACE (V CNTL ) Input Voltage Range 0.2 to 2.3 V Input Resistance Response Time
1 M ΩInput Resistance
Response Time 42dB Gain Change; to 90% Signal Level 0.5 µs DIGITAL INPUTS(3), (4) (HG A, HGB, PD) VIH, High-Level Input Voltage 2.0 V VIL, Low-Level Input Voltage 0.8 V Input Resistance 1 M Ω Input Capacitance 5 pF POWER SUPPLY Supply Voltage 4.75 5.0 5.25 V Power Dissipation 105 125 mW Power-Down 22 mW Power-Up Response Time 25 µs Power-Down Response Time 2 µs THERMAL CHARACTERISTICS Temperature Range Ambient, Operating −40 +85 °C Thermal Resistance, /C0113JA Soldered Pad; Four-Layer PCB with Thermal Vias 36.7 °C/W /C0113JC 4.0 °C/W (1)2nd, 3rd-harmonic distortion less than or equal to −30dBc. (2)Referenced to best fit dB-linear curve. (3)Parameters ensured by design; not production tested. (4)Do not leave inputs floating; no internal pull-up/pull-down resistors.
/C0086/C0067/C0065/C0050/C0054/C0049/C0055 SBOS326 −AUGUST 2005 www.ti.com PIN CONFIGURATION INA + NC VDD R VB VCM GNDR NC INB+ VCNTL A VCLMP A HGA NC PD HGB VCLMP B VCNTL B VCA2617 (Thermal Pad tied to Ground Potential) INA− NC CA2 CA1 V DD A GNDA OutA− OutA+ IN NC CB2 CB1 VDD B GNDB OutB− OutB+ PIN DESCRIPTIONS PIN DESIGNATOR DESCRIPTION PIN DESIGNATOR DESCRIPTION
1 INA+ Channel A +Input 17 VCNTL B Channel B Gain Control Voltage Input
2 NC No Internal Connection 18 VCLMP B Channel B Clamp Voltage
3 VDD R Reference Supply 19 HG B Channel B High/Low Output Gain (High = Low Gain)
4 VB Bias Voltage, 0.1µF Bypass Capacitor 20 PD Power Down (Active High) 5 VCM Common-mode Voltage, 0.1µF Bypass Capacitor 21 NC No Internal Connection
6 GNDR Internal Reference Ground 22 HG A Channel A High/Low Output Gain (High = Low Gain)
7 NC No Internal Connection 23 VCLMP A Channel A Clamp Voltage
8 INB+ Channel B+ Input 24 VCNTL A Channel A Gain Control Voltage Input
9 INB− Channel B− Input 25 OutA+ Channel A+ Output
10 NC No Internal Connection 26 OutA− Channel A− Output
11 CB2 Channel B, External Coupling Capacitor 27 GNDA Channel A Ground
12 CB1 Channel B, External Coupling Capacitor 28 VDD A Channel A Supply
13 VDD B Channel B Supply 29 CA1 Channel A; External Coupling Capacitor
14 GNDB Channel B Ground 30 CA2 Channel A; External Coupling Capacitor
15 OutB− Channel B− Output 31 NC No Internal Connection
16 OutB+ Channel B+ Output 32 INA− Channel A− Input
www.ti.com 17-Jun-2025 PACKAGING INFORMATION Orderable part number Status (1) Material type (2) Package | Pins Package qty | Carrier RoHS (3) Lead finish/ Ball material (4) MSL rating/ Peak reflow (5) Op temp (°C) Part marking (6) VCA2617RHBR Active Production VQFN (RHB) | 32 3000 | LARGE T&R Yes NIPDAU Level-2-260C-1 YEAR -40 to 85 VCA 2617 VCA2617RHBR.B Active Production VQFN (RHB) | 32 3000 | LARGE T&R Yes NIPDAU Level-2-260C-1 YEAR -40 to 85 VCA 2617 VCA2617RHBRG4 Active Production VQFN (RHB) | 32 3000 | LARGE T&R Yes NIPDAU Level-2-260C-1 YEAR -40 to 85 VCA 2617 VCA2617RHBRG4.B Active Production VQFN (RHB) | 32 3000 | LARGE T&R Yes NIPDAU Level-2-260C-1 YEAR -40 to 85 VCA 2617 VCA2617RHBT Active Production VQFN (RHB) | 32 250 | SMALL T&R Yes NIPDAU Level-2-260C-1 YEAR -40 to 85 VCA 2617 VCA2617RHBT.B Active Production VQFN (RHB) | 32 250 | SMALL T&R Yes NIPDAU Level-2-260C-1 YEAR -40 to 85 VCA 2617 (1) Status: For more details on status, see our product life cycle. (2) Material type: When designated, preproduction parts are prototypes/experimental devices, and are not yet approved or released for full production. Testing and final process, including without limitation quality assurance, reliability performance testing, and/or process qualification, may not yet be complete, and this item is subject to further changes or possible discontinuation. If available for ordering, purchases will be subject to an additional waiver at checkout, and are intended for early internal evaluation purposes only. These items are sold without warranties of any kind. (3) RoHS values: Yes, No, RoHS Exempt. See the TI RoHS Statement for additional information and value definition. (4) Lead finish/Ball material: Parts may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two lines if the finish value exceeds the maximum column width. (5) MSL rating/Peak reflow: The moisture sensitivity level ratings and peak solder (reflow) temperatures. In the event that a part has multiple moisture sensitivity ratings, only the lowest level per JEDEC standards is shown. Refer to the shipping label for the actual reflow temperature that will be used to mount the part to the printed circuit board. (6) Part marking: There may be an additional marking, which relates to the logo, the lot trace code information, or the environmental category of the part. Multiple part markings will be inside parentheses. Only one part marking contained in parentheses and separated by a "~" will appear on a part. If a line is indented then it is a continuation of the previous line and the two combined represent the entire part marking for that device. Addendum-Page 1
www.ti.com 17-Jun-2025 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2
PACKAGE MATERIALS INFORMATION www.ti.com 23-Jul-2025 TAPE AND REEL INFORMATION Reel Width (W1) REEL DIMENSIONS A0B0K0WDimension designed to accommodate the component lengthDimension designed to accommodate the component thicknessOverall width of the carrier tapePitch between successive cavity centersDimension designed to accommodate the component width TAPE DIMENSIONSK0 P1B0WA0Cavity QUADRANT ASSIGNMENTS FOR PIN 1 ORIENTATION IN TAPE Pocket QuadrantsSprocket HolesQ1Q1Q2Q2Q3Q3Q4Q4User Direction of Feed P1ReelDiameter *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) (mm) (mm) (mm) (mm) W (mm) Pin1 Quadrant Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION www.ti.com 23-Jul-2025 TAPE AND REEL BOX DIMENSIONS Width (mm) W LH *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) VCA2617RHBR VQFN RHB 32 3000 353.0 353.0 32.0 VCA2617RHBRG4 VQFN RHB 32 3000 353.0 353.0 32.0 VCA2617RHBT VQFN RHB 32 250 213.0 191.0 35.0 Pack Materials-Page 2
www.ti.com GENERIC PACKAGE VIEW Images above are just a representation of the package family, actual package may vary. Refer to the product data sheet for package details. VQFN - 1 mm max heightRHB 32 PLASTIC QUAD FLATPACK - NO LEAD5 x 5, 0.5 mm pitch 4224745/A
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