VCA820IDG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The VCA820IDG4 is a wideband voltage-controlled amplifier (VCA) from Texas Instruments in a 14-pin SOIC package, offering 65 dB CMRR, 17 mV maximum input offset voltage, and dual ±5 V supply operation. It delivers linear gain control over a wide dynamic range, making it ideal for ultrasound front-ends, automatic gain control loops, and communications signal conditioning.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- VCA820IDG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of VCA820IDG4?
- Wideband voltage-controlled gain with 65 dB CMRR
- 17 mV maximum input offset voltage
- Dual supply operation: ±3.5 V to ±6 V
- Single-channel VCA in compact 14-pin SOIC
- Wide dynamic range for AGC loop designs
- Low distortion for ultrasound and RF signal paths
What is VCA820IDG4 used for?
The VCA820IDG4 is widely used in ultrasound imaging front-end circuits where time-gain compensation requires linear voltage-controlled amplification across a large dynamic range. It also fits automatic gain control (AGC) stages in communication receivers and audio test equipment where the gain must be programmed continuously via a DC control voltage.
What are the specifications of VCA820IDG4?
| YTEOL | 0 |
| Analog IC - Other Type | ANALOG CIRCUIT |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Neg Supply Voltage-Max (Vsup) | -6 V |
| Neg Supply Voltage-Min (Vsup) | -3.5 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 36mA |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 3.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| HTS Code | 8542.39.00.01 |
Where can I find the VCA820IDG4 datasheet?
VCA820IDG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for VCA820IDG4?
Compatible alternatives and drop-in replacements for VCA820IDG4:
Frequently Asked Questions
What supply voltage does the VCA820IDG4 require for proper operation?
The VCA820IDG4 operates from a dual supply with negative rails between -3.5 V and -6 V and positive rails of matching magnitude, with ±5 V being the nominal operating point. This dual-supply requirement suits precision analog front-end boards that already carry split rails for op-amp stages.
How does the 65 dB CMRR of the VCA820IDG4 benefit differential signal reception?
With 65 dB common-mode rejection ratio, the VCA820IDG4 attenuates noise and interference shared on both input lines by a factor of approximately 562, preserving signal integrity in noisy industrial or medical environments where ground loops and electromagnetic interference can corrupt small differential signals before amplification.
Which ultrasound or imaging applications can benefit from the VCA820IDG4?
In medical ultrasound scanners, the VCA820IDG4 performs time-gain compensation by continuously varying gain from minimum to maximum across the receive window, typically covering a 40 dB or wider dynamic range within microseconds, allowing deeper tissue echoes arriving later to be boosted relative to near-surface reflections.
How many signal channels does the VCA820IDG4 contain inside its 14-pin SOIC package?
The VCA820IDG4 contains 1 independent gain-controlled channel inside its 14-pin SOIC body, so designs requiring multi-channel AGC would need one device per channel, while the compact package still allows close placement on a PCB with minimal trace length to the signal source.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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