My Inquiry
My Account
Texas Instruments VCA822IDGST
- Part No.:
- VCA822IDGST
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
VCA822IDGST.pdf
- Description:
- IC VARIABLE GAIN 1 CIRC 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,668
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
VCA822IDGST from Texas Instruments is a wideband, DC-coupled, linear-in-V/V variable gain amplifier (VGA) with differential input and single-ended output. It delivers 150-MHz small-signal bandwidth at +10 V/V maximum gain, 0.1-dB gain flatness to 28 MHz, 1700 V/μs slew rate, and ±160 mA output current - enabling high-fidelity signal conditioning in video equalization and pulse amplitude compensation systems.
For engineers reviewing the VCA822IDGST datasheet, VCA822IDGST pinout, VCA822IDGST application, or VCA822IDGST equivalent, key selection criteria include its 40-dB gain adjust range (linear in V/V), ±5-V dual-supply operation, 8.2 nV/√Hz input voltage noise, and SOIC-14 package compatibility with differential line receiver and active filter designs.
Technical Context
The VCA822IDGST integrates two high-impedance input buffers and a current-feedback output stage with an internal multiplier core, eliminating need for external buffering. Its gain is set externally via RG and RF resistors, supporting nominal AVMAX between +2 V/V and +100 V/V.
Gain control is linear in V/V across VG = –1 V to +1 V, delivering precise attenuation (e.g., –24 dB at VG = –0.9 V) with ±0.3 dB gain deviation over 0–1 V control range at +25°C. The architecture maintains stable performance under capacitive loads up to 100 pF with appropriate RS compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW | 150 MHz at AVMAX = +10 V/V - supports high-speed analog signal paths without phase distortion |
| Slew rate | 1700 V/μs - enables clean 5-VPP large-signal response at 137 MHz |
| Gain adjust range | >40 dB linear-in-V/V - provides precise analog gain control without logarithmic compression |
| Input voltage noise | 8.2 nV/√Hz - preserves SNR in low-level video and instrumentation amplification |
| Output current | ±160 mA - drives 100-Ω loads directly, including multiple video cables or active filters |
| Gain flatness | 0.1 dB to 28 MHz - ensures minimal amplitude error in composite video and broadband baseband signals |
| Supply voltage | ±5 V (±3.5 V min, ±6.5 V abs max) - compatible with standard dual-rail analog supply rails |
Pinout & Package
Package: SOIC-14 (8.65 mm × 3.91 mm), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VCC (Pins 1, 14) | Positive power supply | Accepts +5 V; dual-supply operation requires symmetric negative rail |
| –VCC (Pins 7, 8) | Negative power supply | Accepts –5 V; pins 7 and 8 internally tied for low-inductance return |
| +VIN (Pin 3) | Noninverting input | Differential input node; high-impedance (0.5 MΩ || 1 pF) for minimal loading |
| –VIN (Pin 6) | Inverting input | Completes differential pair; matched impedance to +VIN for common-mode rejection |
| +RG / –RG (Pins 4, 5) | Gain set resistor terminals | External RG defines AVMAX = 2 × (RF / RG); sets nominal gain range +2 to +100 V/V |
| FB (Pin 12) | Feedback resistor input | Connects to RF; closes loop for gain-setting and bandwidth control |
| VG (Pin 2) | Gain control voltage input | Linear-in-V/V control: 0 V → AVMAX, –1 V → ~0.1×AVMAX (–20 dB), +1 V → AVMAX |
| VOUT (Pin 10) | Amplified output | Single-ended output capable of ±3.7 V swing into 100 Ω; drives coaxial lines directly |
| GND (Pin 11) | Analog ground reference | Primary ground return for signal path; separate from power ground in layout best practice |
| NC (Pin 13) | No connection | Not bonded; must be left floating or grounded per layout guidelines |
| VREF (Pin 9) | Output voltage reference | Internal bias point; typically unused unless level-shifting output is required |
Key Features
| Feature | Design Value |
|---|---|
| Differential-to-single-ended conversion | Integrated architecture eliminates need for external op-amps or baluns in line-receiver applications |
| DC-coupled signal path | Enables accurate pulse amplitude compensation and baseband video equalization without AC coupling artifacts |
| High-output-current drive | ±160 mA capability supports driving multiple 75-Ω video loads or active RC equalizer networks |
| Capacitive load stability | Stable with up to 100 pF load when series RS (e.g., 20 Ω) is used - critical for PCB trace and connector capacitance |
| Low gain nonlinearity | ±0.3 dB max gain deviation over 0–1 V VG range ensures predictable analog scaling in closed-loop systems |
Applications
| Differential Line Receivers | Differential Equalizers |
|---|---|
Use Scenario: Receiving balanced analog video or data signals over twisted-pair cables subject to frequency-dependent loss. IC Role / Device Role / Timing Role: Differential-to-single-ended VGA that compensates for cable roll-off while preserving DC level and timing integrity. Use Value: Enables 100-m+ transmission of HD video using passive cabling, with 28-MHz 0.1-dB flatness ensuring minimal chroma/luma skew. | Use Scenario: Restoring high-frequency content in degraded video or serial digital signals after long interconnects. IC Role / Device Role / Timing Role: Active RC equalizer core with programmable gain to match inverse channel response. Use Value: Adjustable +2 to +100 V/V gain and >40-dB dynamic range allow fine-tuning for varying cable lengths and topologies. |
| Pulse Amplitude Compensation | Voltage-Tunable Active Filters |
Use Scenario: Stabilizing pulse height in time-of-flight sensors or laser diode drivers where signal amplitude varies with distance or temperature. IC Role / Device Role / Timing Role: Linear-in-V/V gain controller that scales pulse amplitude in real time based on feedback voltage. Use Value: ±0.3 dB gain linearity over 0–1 V VG ensures sub-1% amplitude error in precision measurement loops. | Use Scenario: Implementing tunable low-pass or band-pass filtering in test equipment or communication front-ends. IC Role / Device Role / Timing Role: Gain-controlled amplifier embedded in filter feedback paths to adjust Q-factor or cutoff frequency. Use Value: 150-MHz bandwidth and 1700 V/μs slew rate support tunable filters operating beyond 50 MHz without slew-induced distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar variable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VCA821IDGSR | 420-MHz bandwidth, 7.0 nV/√Hz noise, VSSOP-10 package - higher speed but lower output drive (±100 mA) | Better suited for RF IF gain control; less ideal for video load driving due to reduced current capability | Select when bandwidth >300 MHz is required and load impedance ≥300 Ω |
| LMH6503MA/NOPB | 200-MHz bandwidth, 2.4 nV/√Hz noise, fixed +10 V/V gain, no external RG/RF - simpler but non-adjustable | Drop-in replacement only for fixed-gain scenarios; lacks VCA822IDGST's 40-dB analog control range | Choose when gain stability and ultra-low noise outweigh need for variable gain |
Compared with VCA822IDGST, VCA821IDGSR trades output current and SOIC-14 layout compatibility for higher bandwidth, while LMH6503MA/NOPB sacrifices gain adjustability for lower noise and simplified design - making VCA822IDGST optimal for DC-coupled, high-drive, programmable-gain video and pulse systems.
Availability
VCA822IDGST is available at Aetrix Electronics and suitable for differential line receivers, video equalizers, pulse amplitude compensation circuits, and voltage-tunable active filters requiring stable component supply across industrial and broadcast video production environments.
Supply support for VCA822IDGST includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-speed amplifiers and signal chain solutions.
The VCA822IDGST belongs to TI's wideband variable gain amplifier product line, engineered specifically for DC-coupled, high-fidelity analog signal conditioning in video infrastructure, test equipment, and precision instrumentation.
FAQ
What is the maximum gain range supported by the VCA822IDGST?
The VCA822IDGST supports a >40-dB gain adjust range linear in V/V, with nominal maximum gain (AVMAX) externally set between +2 V/V and +100 V/V using RG and RF resistors. At AVMAX = +10 V/V, gain varies from +10 V/V at VG = +1 V down to ~0.1 V/V (–20 dB) at VG = –1 V, confirmed across –40°C to +85°C operating range.
Does the VCA822IDGST require external output buffering for 75-Ω video loads?
No, the VCA822IDGST does not require external buffering for 75-Ω video loads. Its ±160 mA output current and ±3.7 V swing into 100 Ω enable direct drive of standard 75-Ω coaxial video lines. Layout best practices recommend series 20-Ω RS termination to ensure stability with typical cable capacitance (≤100 pF), as validated in TI's SBOS343D application curves.
What is the recommended supply configuration for the VCA822IDGST?
The VCA822IDGST is specified for ±5-V dual-supply operation, with absolute maximum ratings of ±6.5 V. It operates down to ±3.5 V minimum supply, but full performance (including 150-MHz bandwidth and 0.1-dB flatness) is guaranteed only at ±5 V. Pin 1 and 14 connect to +VCC; pins 7 and 8 tie to –VCC - both rails must be well-decoupled with 0.1-μF ceramic capacitors near the SOIC-14 package.
How does gain linearity perform across temperature for the VCA822IDGST?
The VCA822IDGST maintains ±0.37 dB max gain deviation over 0–1 V VG range at –40°C to +85°C, per Electrical Characteristics Table (Section 7.5). At +25°C, deviation is tighter (±0.3 dB), and absolute gain error remains within ±0.6 dB across the full temperature range - enabling stable analog scaling in uncontrolled thermal environments without recalibration.
Can the VCA822IDGST be used in DC-coupled active filter designs?
Yes, the VCA822IDGST is explicitly designed for DC-coupled operation and is commonly used in voltage-tunable active filters. Its rail-to-rail input common-mode range (±2.1 V), 65-dB CMRR, and absence of AC-coupling requirements allow precise low-frequency gain control down to 0 Hz - critical for baseline correction and low-pass filter tuning in instrumentation and medical signal chains.
VCA822IDGST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Variable Gain
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1700V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 168 MHz
- Current - Input Bias:
- 19 µA
- Voltage - Input Offset:
- 4 mV
- Current - Supply:
- 36mA
- Current - Output / Channel:
- 160 mA
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
VCA822IDGST FAQ
1.How can I place an order for VCA822IDGST through Aetrix?
Please submit a Request for Quotation (RFQ) for VCA822IDGST on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for VCA822IDGST reliable?
The price and inventory of VCA822IDGST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VCA822IDGST is usually 5 days.
3.What payment methods are accepted for VCA822IDGST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VCA822IDGST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VCA822IDGST?
VCA822IDGST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VCA822IDGST order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for VCA822IDGST?
For technical support, including VCA822IDGST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VCA822IDGST requirements.
6.How does Aetrix verify that VCA822IDGST is sourced from the original manufacturer or authorized distributors?
All VCA822IDGST products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VCA822IDGST meets industry standards.
7.What is the process for return or replacement of VCA822IDGST?
All VCA822IDGST units undergo pre-shipment inspection (PSI). If there is an issue with VCA822IDGST, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The VCA822IDGST part is unused and in its original packaging.
Return procedure for VCA822IDGST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VCA822IDGST Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
