My Inquiry
My Account
Texas Instruments OPA353NA/3KG4
- Part No.:
- OPA353NA/3KG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA353NA/3KG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,412
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA353NA/3KG4 from Texas Instruments (formerly Burr-Brown) is a single, rail-to-rail input/output CMOS operational amplifier optimized for low-voltage, single-supply operation (2.7V–5.5V). It delivers 44MHz gain-bandwidth, 22V/µs slew rate, 5nV/√Hz input voltage noise, rail-to-rail output swing within 10mV of supply rails (at 10kΩ), and 0.0006% THD+N - making it ideal for driving medium-speed sampling ADCs in space-constrained portable systems.
For engineers reviewing the OPA353NA/3KG4 datasheet, OPA353NA/3KG4 pinout, OPA353NA/3KG4 application, or OPA353NA/3KG4 equivalent, key selection criteria include its SOT-23-5 package footprint, guaranteed rail-to-rail input beyond supply rails (±0.1V), 5.2mA quiescent current per amplifier, –40°C to +85°C temperature range, and suitability for high-fidelity signal conditioning where low distortion and wide bandwidth are critical.
Technical Context
The OPA353NA/3KG4 employs a complementary N/P-channel input stage enabling true rail-to-rail input common-mode range (–0.1V to V+ + 0.1V), and a class AB common-source output stage delivering rail-to-rail output swing. Its 0.6µm CMOS process ensures low input bias current (±0.5pA typ) and low noise performance across the full operating voltage range.
It is unity-gain stable and specified with 100dB open-loop gain (RL = 10kΩ), 76dB CMRR (typ), and 40µV/V PSRR (typ) at DC - supporting precision DC-coupled and wideband AC applications without external compensation. The device maintains consistent small-signal step response (0.22µs to 0.1%) and overload recovery (0.1µs) under 2.7V–5.5V supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 44MHz - enables stable closed-loop operation up to ~40MHz at G = 1, suitable for video and fast data acquisition. |
| Slew Rate | 22V/µs - supports clean 2V-step settling in 0.22µs (0.1%), critical for driving SAR ADC inputs without slewing artifacts. |
| Input Voltage Noise Density | 5nV/√Hz @ 100kHz - low-noise performance preserves SNR in sensor interfaces and audio front-ends. |
| THD+N | 0.0006% @ 1kHz, RL = 600Ω - meets high-fidelity audio and precision measurement linearity requirements. |
| Output Swing vs Rail | 10mV @ RL = 10kΩ - maximizes dynamic range in 3.3V or 5V single-supply systems, e.g., battery-powered instrumentation. |
| Quiescent Current | 5.2mA (typ) - balances speed and power efficiency for always-on signal chains in portable electronics. |
| Input Common-Mode Range | –0.1V to V+ + 0.1V - allows direct interfacing to unbuffered DAC outputs or ground-referenced sensors without level-shifting. |
Pinout & Package
SOT-23-5 surface-mount package (5-pin, 1.6mm × 2.9mm footprint), RoHS-compliant, moisture sensitivity level (MSL) Level-2-260°C-1 year.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V–) | Negative supply terminal | Ground or negative rail connection; supports single-supply operation down to 2.5V. |
| 2 (+In) | Non-inverting input | Differential input node with 10¹³Ω || 6.5pF impedance; accepts signals from –0.1V to V+ + 0.1V. |
| 3 (–In) | Inverting input | Differential input node matched to +In; used for feedback and signal inversion configurations. |
| 4 (V+) | Positive supply terminal | Single positive supply input (2.7V–5.5V); bypassing with 0.01µF ceramic capacitor required. |
| 5 (Out) | Amplifier output | Class AB rail-to-rail output capable of ±40mA drive into resistive loads; drives 75Ω video lines directly. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Common-mode range extends 100mV beyond both supply rails - eliminates need for input biasing in single-supply sensor interfaces. |
| Rail-to-rail output | Swings to within 10mV of V+ and V– with 10kΩ load - preserves >99% of available voltage headroom at 3.3V supply. |
| Low input bias current | ±0.5pA typical - minimizes offset drift and leakage errors in high-impedance transducer amplification (e.g., piezoelectric sensors). |
| Unity-gain stability | No external compensation required - simplifies layout and reduces BOM count in gain-of-1 buffer and filter applications. |
| 75Ω video drive capability | Validated for composite video line driving (G = 2, NTSC) - enables direct replacement of legacy video op amps without redesign. |
Applications
| Cell Phone PA Control Loop | ADC Driver for Sampling Data Acquisition |
|---|---|
Use Scenario: Closed-loop control of power amplifier output power in GSM/EDGE handset RF front-ends. IC Role / Device Role / Timing Role: High-speed error amplifier comparing detected RF envelope to reference, generating correction voltage for PA bias control. Use Value: 44MHz bandwidth and 22V/µs slew rate enable fast loop response to burst-mode RF signals; rail-to-rail I/O accommodates 2.8V Li-ion supply without level shifters. |
Use Scenario: Buffering and gain-setting stage preceding 12-bit, 500kHz sampling ADCs (e.g., ADS7861) in portable test equipment. IC Role / Device Role / Timing Role: Low-noise, low-distortion driver isolating ADC input capacitance and absorbing charge injection kickback. Use Value: 5nV/√Hz noise and 0.0006% THD+N preserve ENOB; 0.22µs 0.1% settling ensures accurate sampling at full throughput. |
| Single-Supply Composite Video Line Driver | Low-Voltage Audio Signal Conditioning |
Use Scenario: Driving 75Ω coaxial video cables from single 5V supply in security cameras or portable media players. IC Role / Device Role / Timing Role: G = 2 non-inverting amplifier with AC-coupled input and DC-bias network to handle sync-tip excursions below ground. Use Value: Guaranteed 75Ω drive capability and differential gain/phase error <0.17% meet NTSC broadcast specs; rail-to-rail output handles full 1Vpp video swing. |
Use Scenario: Pre-amplification and filtering of microphone or line-level audio in battery-powered headphones or voice recorders. IC Role / Device Role / Timing Role: Low-noise, low-THD gain stage and active filter element in analog front-end before codec ADC. Use Value: 5nV/√Hz input noise and 0.0006% THD+N maintain >90dB SNR; SOT-23-5 footprint saves PCB area in compact audio modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA353UA | SO-8 package (vs SOT-23-5); identical electrical specs; higher thermal resistance (150°C/W vs 200°C/W). | Better suited for prototyping or higher-power dissipation scenarios where SO-8 solderability and thermal mass are preferred. | Select OPA353UA when board space permits larger footprint and manual assembly or rework is required. |
| OPA365AIDBVR | Higher GBW (50MHz), lower noise (4.5nV/√Hz), but higher IQ (8.5mA); same SOT-23-5 package and rail-to-rail I/O. | Preferred for >10MHz signal paths or ultra-low-noise sensor interfaces where 0.5nV/√Hz reduction justifies extra 3.3mA quiescent current. | Choose OPA365AIDBVR only if design requires >44MHz bandwidth or sub-5nV/√Hz noise; verify thermal margin at 8.5mA. |
Compared with OPA353NA/3KG4, OPA353UA offers identical performance in a larger SO-8 package for easier handling and thermal management, while OPA365AIDBVR trades higher power for marginal bandwidth/noise improvements - making OPA353NA/3KG4 the optimal balance of speed, noise, size, and efficiency for mainstream portable signal chains.
Availability
OPA353NA/3KG4 is available at Aetrix Electronics and suitable for cell phone PA control loops, ADC drivers for sampling data acquisition, and single-supply video line drivers requiring stable component supply, RoHS compliance, and MSL-2 handling assurance.
Supply support for OPA353NA/3KG4 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 acquired Burr-Brown in 2000 and maintains its precision analog portfolio, including high-performance op amps, data converters, and interface ICs for industrial, automotive, and communications markets.
The OPA353NA/3KG4 belongs to TI's MicroAmplifier™ series - designed specifically for miniature, low-voltage, single-supply applications demanding rail-to-rail I/O, wide bandwidth, and low noise in space-constrained portable electronics.
FAQ
What is the maximum operating supply voltage for the OPA353NA/3KG4?
The OPA353NA/3KG4 is fully specified from 2.7V to 5.5V and can operate up to 5.5V continuously. Absolute maximum rating is 5.5V on V+ and V– pins; exceeding this risks permanent damage. Its minimum operating voltage is 2.5V, enabling use with partially discharged Li-ion batteries. All key parameters - including gain-bandwidth, slew rate, and output swing - are guaranteed across the 2.7V–5.5V range.
Does the OPA353NA/3KG4 require external compensation for unity-gain stability?
No, the OPA353NA/3KG4 is internally compensated and unity-gain stable. It does not require external capacitors or resistors to maintain phase margin in G = 1 configurations. This simplifies design in buffer, follower, and active filter applications. Stability is maintained with capacitive loads up to 100pF in unity-gain; heavier loads may require series output resistance per datasheet recommendations.
Can the OPA353NA/3KG4 drive a 75Ω video load directly?
Yes, the OPA353NA/3KG4 is explicitly characterized for 75Ω video line driving in single-supply configurations (G = 2, NTSC signal). It achieves <0.17% differential gain and phase error under these conditions. Its rail-to-rail output delivers full 1Vpp swing into 75Ω with minimal distortion, eliminating need for external current-boosting stages in portable video systems.
What is the input common-mode voltage range of the OPA353NA/3KG4?
The OPA353NA/3KG4 guarantees an input common-mode voltage range from –0.1V to V+ + 0.1V - extending 100mV beyond both supply rails. This is achieved via a complementary N/P-channel input stage. Input signals outside this range may forward-bias internal protection diodes; if exceeding ±0.3V beyond rails, input current must be limited to ≤10mA using series resistors.
Is the OPA353NA/3KG4 pin-compatible with other members of the OPA353 family?
No - the OPA353NA/3KG4 uses the 5-pin SOT-23-5 package (pinout: V–, +In, –In, V+, Out), while OPA353UA uses SO-8 and OPA2353/OPA4353 use dual/quad configurations with different pin counts and assignments. There is no pin-to-pin compatibility between SOT-23-5 and SO-8 variants; PCB layout must be redesigned when switching packages.
OPA353NA/3KG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 22V/µs
- Gain Bandwidth Product:
- 44 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 5.2mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA353NA/3KG4 FAQ
1.How can I place an order for OPA353NA/3KG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA353NA/3KG4 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 OPA353NA/3KG4 reliable?
The price and inventory of OPA353NA/3KG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA353NA/3KG4 is usually 5 days.
3.What payment methods are accepted for OPA353NA/3KG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA353NA/3KG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA353NA/3KG4?
OPA353NA/3KG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA353NA/3KG4 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 OPA353NA/3KG4?
For technical support, including OPA353NA/3KG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA353NA/3KG4 requirements.
6.How does Aetrix verify that OPA353NA/3KG4 is sourced from the original manufacturer or authorized distributors?
All OPA353NA/3KG4 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 OPA353NA/3KG4 meets industry standards.
7.What is the process for return or replacement of OPA353NA/3KG4?
All OPA353NA/3KG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA353NA/3KG4, 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 OPA353NA/3KG4 part is unused and in its original packaging.
Return procedure for OPA353NA/3KG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA353NA/3KG4 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…
