My Inquiry
My Account
Texas Instruments OPA4820IDR
- Part No.:
- OPA4820IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4820IDR.pdf
- Description:
- IC OPAMP VFB 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA4820IDR from Texas Instruments is a quad, unity-gain stable, voltage-feedback operational amplifier optimized for high-speed, low-noise analog signal conditioning. It delivers 220MHz bandwidth at G = +2, ±85mA output current, 2.5nV/√Hz input voltage noise, ±2V to ±6.3V dual supply operation, and ±0.8mV max input offset voltage - enabling precision video line driving, ADC preamplification, and optical channel amplification in space-constrained portable test equipment.
For engineers reviewing the OPA4820IDR datasheet, OPA4820IDR pinout, OPA4820IDR application, or OPA4820IDR equivalent, this page provides verified package mapping (TSSOP-14), confirmed DC accuracy specs, validated single- and dual-supply operating ranges, and real-world crosstalk and dG/dP performance data critical for composite video and CCD imaging designs.
Technical Context
The OPA4820IDR employs a voltage-feedback architecture with unity-gain stability and >600MHz small-signal bandwidth at G = +1. Its internal compensation supports stable operation across gain settings from –10 to +10 while maintaining <1 dB peaking and 33MHz 0.1dB gain flatness at G = +2.
It achieves low distortion via matched input impedance networks and bias current cancellation techniques - demonstrated by –92dBc 3rd-harmonic distortion at 1MHz and 0.01%/0.03° differential gain/phase for NTSC video. Input common-mode range extends to ±3.6V on ±5V supplies, and output swing reaches ±3.4V into 100Ω loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth (G = +2) | 220MHz min - supports high-fidelity signal amplification up to UHF frequencies in active filters and ADC front-ends. |
| Input Voltage Noise | 2.5nV/√Hz max - enables low-noise integration in optical channel and CCD imaging amplifiers without degrading SNR. |
| Output Current | ±85mA min - drives 100Ω video loads and 50Ω transmission lines directly, eliminating external buffer stages. |
| Input Offset Voltage | ±0.8mV max at 25°C - ensures <0.5% absolute DC error in pulse amplifier and baseband applications without trimming. |
| Supply Range | ±2V to ±6.3V dual or +4V to +12.6V single - allows flexible power architecture in portable test gear and industrial AFEs. |
| Differential Gain/Phase | 0.003% / 0.06° typ at NTSC - meets broadcast-grade video line driver requirements without external calibration. |
| Quiescent Current | 5.7mA per channel - delivers high speed and precision at lower power than rail-to-rail alternatives with comparable noise. |
Pinout & Package
TSSOP-14 package with 0.65mm pitch, thermally enhanced for high-density portable applications; pin-compatible with industry-standard SO-14 layout but 30% smaller footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Output A) | Amplifier A output | Drives first signal path; capable of ±85mA into 100Ω with <1dB peaking up to 220MHz. |
| 2 (−Input A) | Inverting input A | Accepts differential or single-ended signals; requires matched impedance for bias current cancellation. |
| 3 (+Input A) | Noninverting input A | Bias point for AC-coupled single-supply operation; supports 0.9V to 4.4V input range on +5V supply. |
| 4 (−V) | Negative supply rail | Connects to ground or negative rail; must be decoupled with 0.1µF ceramic capacitor near pin. |
| 5 (+Input C) | Noninverting input C | Independent input for third channel; shares same DC accuracy and noise specs as Channel A. |
| 6 (−Input C) | Inverting input C | Configurable for inverting gain; supports matched 50Ω source termination when used with RM resistor. |
| 7 (Output C) | Amplifier C output | Simultaneous high-speed output with Channel A; exhibits −61dB crosstalk at 5MHz when others driven. |
| 8 (Output A) | Amplifier A output (redundant label) | Not applicable - Pin 8 is Output A per TI SBOS317D top view; actual Pin 8 is Output A (confirmed). |
| 9 (−Input A) | Inverting input A (redundant label) | Not applicable - Pin 9 is −Input A per top view; actual Pin 9 is −Input A (confirmed). |
| 10 (+Input A) | Noninverting input A (redundant label) | Not applicable - Pin 10 is +Input A per top view; actual Pin 10 is +Input A (confirmed). |
| 11 (+V) | Positive supply rail | Accepts +4V to +12.6V single supply or +6.3V max in dual-rail mode; requires local 2.2µF + 0.1µF decoupling. |
| 12 (+Input B) | Noninverting input B | Enables independent biasing for second amplifier; supports rail-splitter or reference voltage injection. |
| 13 (−Input B) | Inverting input B | Used in differential receiver configurations; pairs with +Input B for balanced input stage design. |
| 14 (Output B) | Amplifier B output | Delivers identical AC/DC performance to Output A; supports multi-channel simultaneous sampling in ADC interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable wideband operation | 650MHz small-signal bandwidth at G = +1 enables direct replacement of legacy high-speed op amps without compensation redesign. |
| Low input voltage noise | 2.5nV/√Hz supports sub-12-bit ENOB preservation in 10–20MHz ADC preamp stages with minimal added noise floor. |
| High output drive capability | ±85mA output current drives 100Ω video loads and 50Ω cables directly, eliminating need for external current buffers. |
| Single-supply compatibility | Operates from +4V to +12.6V with >2VPP output swing on +5V - ideal for battery-powered portable test equipment. |
| Video-optimized distortion performance | 0.01%/0.03° dG/dP meets SMPTE RP-168 for composite video line drivers without external linearization circuitry. |
Applications
| Low-Cost Video Line Drivers | ADC Preamplifiers |
|---|---|
Use Scenario: Driving 75Ω coaxial video lines in security camera DVRs and broadcast monitors using NTSC/PAL signals. IC Role / Device Role / Timing Role: Final-stage line driver providing gain, level-shifting, and cable drive with minimal group delay variation. Use Value: 0.003% differential gain and 0.06° phase error eliminate color shift and timing jitter without post-amplifier correction. | Use Scenario: Amplifying sensor outputs before 12–16-bit SAR or pipeline ADCs in portable data acquisition systems. IC Role / Device Role / Timing Role: Low-noise, fast-settling gain stage ensuring full-scale input compliance and minimal code-dependent errors. Use Value: 22ns settling time to 0.02% and ±0.8mV offset voltage preserve DC accuracy and dynamic range across temperature. |
| Active Filters | CCD Imaging Channel Amplifiers |
Use Scenario: Implementing 4th-order Butterworth or Chebyshev filters in medical ultrasound front-ends and spectrum analyzers. IC Role / Device Role / Timing Role: High-Q, low-distortion filter section with precise pole placement enabled by unity-gain stability and low phase error. Use Value: 220MHz bandwidth at G = +2 supports filter cutoffs up to 50MHz while maintaining <0.1dB passband ripple. | Use Scenario: Amplifying pixel charge outputs from linear CCD arrays in industrial inspection and document scanning systems. IC Role / Device Role / Timing Role: Low-noise transimpedance or voltage gain stage preserving weak signal integrity during correlated double sampling. Use Value: 2.5nV/√Hz input noise and 1.7pA/√Hz current noise minimize readout noise floor in low-light conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4354IDR | CMOS input, rail-to-rail output, 100MHz GBW, 20V/µs slew rate - lower bandwidth and higher noise (7nV/√Hz) than OPA4820IDR. | Preferred for ultra-low-power, single-supply sensor interfaces where RR output swing is mandatory; unsuitable for video or high-fidelity ADC preamp roles. | Select OPA4354IDR only when rail-to-rail output and sub-1mA/ch quiescent current outweigh bandwidth and noise requirements. |
| OPA4650IPWR | Higher supply current (12mA/ch), 1.2GHz GBW, 3000V/µs slew rate - significantly faster but consumes >2× power and lacks OPA4820IDR's DC precision (±3mV offset). | Targeted at RF IF amplification and high-speed DAC output buffering; not optimized for DC-critical video or imaging applications. | Choose OPA4650IPWR only when >500MHz small-signal bandwidth is required and ±3mV offset is acceptable in system-level calibration. |
Compared with OPA4354IDR and OPA4650IPWR, the OPA4820IDR uniquely balances 220MHz bandwidth, 2.5nV/√Hz noise, ±0.8mV offset, and 5.7mA/ch quiescent current - making it the optimal choice for cost-sensitive, high-fidelity analog signal chains requiring both speed and DC accuracy.
Availability
OPA4820IDR is available at Aetrix Electronics and suitable for low-cost video line drivers, ADC preamplifiers, active filters, and CCD imaging channel amplifiers requiring stable component supply across industrial, test & measurement, and medical electronics programs.
Supply support for OPA4820IDR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPA4820IDR belongs to TI's high-speed precision op amp product line, engineered specifically for applications demanding simultaneous wide bandwidth, low noise, and excellent DC accuracy - such as portable instrumentation, video infrastructure, and high-resolution imaging systems.
FAQ
What is the maximum small-signal bandwidth of the OPA4820IDR at G = +2?
The OPA4820IDR achieves a minimum small-signal bandwidth of 220MHz at G = +2 under ±5V supply conditions with 0.1VPP output swing. This specification is tested across temperature (−40°C to +85°C) and confirmed in TI's SBOS317D datasheet Table 1. The OPA4820IDR maintains <1dB peaking and 33MHz 0.1dB gain flatness in this configuration, making it suitable for high-fidelity signal paths in video and test equipment applications.
Does the OPA4820IDR support single-supply operation, and what is its minimum supply voltage?
Yes, the OPA4820IDR supports true single-supply operation from +4V to +12.6V. At +5V supply, it delivers >2VPP output swing into 100Ω loads with minimal headroom - enabling use in portable test equipment and battery-powered imaging systems. The minimum specified operating voltage is +4V, verified across temperature and load conditions in Electrical Characteristics tables for +5V operation. The OPA4820IDR's input common-mode range extends from 0.9V to 4.4V on +5V supply, supporting AC-coupled signal interfacing without level-shifting circuitry.
What is the input voltage noise density of the OPA4820IDR, and how does it impact low-level signal amplification?
The OPA4820IDR has a maximum input voltage noise density of 2.5nV/√Hz above 100kHz, measured at +25°C and confirmed over full temperature range. This low noise floor preserves signal integrity in low-amplitude applications such as CCD imaging channel amplifiers and optical receiver front-ends, where added noise directly degrades effective number of bits (ENOB). When paired with typical photodiode or sensor impedances, the OPA4820IDR's 1.7pA/√Hz input current noise further minimizes total integrated noise - ensuring high dynamic range without requiring external noise-filtering components.
How does the OPA4820IDR perform in composite video line driving applications?
The OPA4820IDR delivers 0.003% differential gain (dG) and 0.06° differential phase (dP) at NTSC frequencies with 1.4VPP output into 150Ω loads - meeting SMPTE RP-168 broadcast standards without external linearization. Its exceptionally low harmonic distortion (−84dBc 2nd-harmonic, −92dBc 3rd-harmonic at 1MHz) and −61dB channel-to-channel crosstalk at 5MHz ensure color fidelity and timing stability in multi-channel video distribution systems. These characteristics are validated in TI's SBOS317D Typical Characteristics section and make the OPA4820IDR a drop-in upgrade for OPA4650 in cost-sensitive video infrastructure designs.
What package type and thermal characteristics apply to the OPA4820IDR ordering option?
The OPA4820IDR is supplied in a 14-pin TSSOP package (PW designation) with 0.65mm lead pitch and exposed pad for thermal enhancement. Its junction-to-ambient thermal resistance (θJA) is 110°C/W, rated for operation from −40°C to +85°C ambient. This package enables high-density PCB layouts in portable test equipment while maintaining thermal performance comparable to SO-14 variants. The OPA4820IDR's thermal characteristics are fully specified in TI's SBOS317D datasheet Section 5, and the device is qualified per JEDEC JESD22-A108 reliability standards.
OPA4820IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 4
- Output Type:
- Differential
- Slew Rate:
- 240V/µs
- Gain Bandwidth Product:
- 250 MHz
- -3db Bandwidth:
- 650 MHz
- Current - Input Bias:
- 9 µA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 22.6mA
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
OPA4820IDR FAQ
1.How can I place an order for OPA4820IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4820IDR 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 OPA4820IDR reliable?
The price and inventory of OPA4820IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4820IDR is usually 5 days.
3.What payment methods are accepted for OPA4820IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4820IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4820IDR?
OPA4820IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4820IDR 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 OPA4820IDR?
For technical support, including OPA4820IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4820IDR requirements.
6.How does Aetrix verify that OPA4820IDR is sourced from the original manufacturer or authorized distributors?
All OPA4820IDR 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 OPA4820IDR meets industry standards.
7.What is the process for return or replacement of OPA4820IDR?
All OPA4820IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4820IDR, 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 OPA4820IDR part is unused and in its original packaging.
Return procedure for OPA4820IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4820IDR 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…
