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Texas Instruments OPA4353UA
- Part No.:
- OPA4353UA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4353UA.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:588
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Product details
Overview
OPA4353UA from Texas Instruments (formerly Burr-Brown) is a quad, rail-to-rail input/output CMOS operational amplifier optimized for low-voltage, single-supply operation (2.7V to 5.5V). It delivers 44MHz gain-bandwidth, 22V/µs slew rate, 5nV/√Hz input voltage noise, and ±40mA output drive-enabling high-fidelity signal conditioning in space-constrained A/D converter driver and video line driver applications.
For engineers reviewing the OPA4353UA datasheet, OPA4353UA pinout, OPA4353UA application, or OPA4353UA equivalent, key selection criteria include its SO-14 package footprint, guaranteed rail-to-rail swing within 10mV of supply rails at 10kΩ load, –40°C to +85°C temperature range, and compatibility with 75Ω video loads and sampling ADC interfaces.
Technical Context
The OPA4353UA employs a complementary N/P-channel input stage enabling rail-to-rail common-mode input range extending 100mV beyond both supply rails. Its class AB output stage supports rail-to-rail output swing while maintaining >100dB open-loop gain up to 10kHz under 10kΩ load.
Designed on a 0.6µm CMOS process, it features unity-gain stability, low THD+N (0.0006% at 1kHz), and independent amplifier channels minimizing crosstalk-critical for multi-channel data acquisition and precision analog front-ends where channel isolation and dynamic range preservation are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 44MHz - enables stable closed-loop operation up to ~10MHz with G ≥ 4, suitable for anti-aliasing and reconstruction filters. |
| Slew Rate | 22V/µs - supports full-scale 2V step settling in ≤0.22µs (0.1%), critical for driving SAR ADC sample-and-hold inputs without distortion. |
| Input Voltage Noise Density | 5nV/√Hz at 100kHz - preserves SNR in wideband sensor signal chains and audio preamplifier stages. |
| Output Swing (vs Rail) | 10mV at 10kΩ load - maximizes usable dynamic range in 3.3V or 5V systems, reducing headroom loss in single-supply designs. |
| Quiescent Current per Amp | 5.2–8mA - balances speed and power efficiency for battery-powered instrumentation requiring four independent amplifiers. |
| Common-Mode Rejection Ratio | 76–86dB (dc) - ensures robust rejection of supply ripple and ground bounce in mixed-signal PCB layouts. |
| THD+N | 0.0006% at 1kHz - meets fidelity requirements for professional audio line drivers and high-resolution data acquisition. |
Pinout & Package
OPA4353UA is housed in a 14-pin SOIC (SO-14) surface-mount package with standard 1.27mm pitch, JEDEC MS-012AC compliant footprint, and θJA = 100°C/W thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Amplifier A output - drives external load directly; capable of ±40mA continuous current into 10kΩ. |
| 2 | –In A | Inverting input of Amp A - high-impedance node (1013Ω || 6.5pF); requires matched trace impedance in differential configurations. |
| 3 | +In A | Non-inverting input of Amp A - same impedance as Pin 2; rail-to-rail common-mode range extends –0.1V to V+ + 0.1V. |
| 4 | V– | Negative supply rail - connects to system ground or negative rail; must be bypassed with 0.01µF ceramic capacitor near pin. |
| 5 | +In B | Non-inverting input of Amp B - electrically isolated from other amplifiers; no crosstalk below 0.15µV/V dc. |
| 6 | –In B | Inverting input of Amp B - identical electrical characteristics to Pins 2 and 5; supports independent feedback networks. |
| 7 | Out B | Amplifier B output - fully independent output stage; maintains rail-to-rail swing even when other outputs are loaded. |
| 8 | NC | No connect - internal die pad not bonded; must remain unconnected on PCB. |
| 9 | Out C | Amplifier C output - shares same performance specs as Pins 1 and 7; supports simultaneous multi-channel buffering. |
| 10 | –In C | Inverting input of Amp C - matches input bias current (±0.5pA typ) and offset voltage drift (±5µV/°C) across all four amps. |
| 11 | +In C | Non-inverting input of Amp C - identical rail-to-rail input behavior; transition region between N/P input pairs occurs at V+ – 2.0V to V+ – 1.2V. |
| 12 | V+ | Positive supply rail - operates from 2.7V to 5.5V; minimum 2.5V allowed but not specified over temperature. |
| 13 | +In D | Non-inverting input of Amp D - enables four independent gain stages in one IC, reducing board area vs discrete solutions. |
| 14 | –In D | Inverting input of Amp D - supports individual compensation; input capacitance is 9pF (differential + common-mode). |
| 15 | Out D | Amplifier D output - completes quad configuration; all four outputs retain 100dB open-loop gain down to 50mV from rails. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal handling in 3.3V systems without level-shifting circuitry, preserving SNR and simplifying power domain partitioning. |
| Unity-gain stable architecture | Eliminates need for external compensation components in buffer, gain-of-one, or active filter configurations-reducing BOM count and layout complexity. |
| 75Ω video drive capability | Supports direct connection to composite video transmission lines without external buffers, meeting NTSC differential gain/phase error specs (<0.17%). |
| Low input bias current (±0.5pA typ) | Minimizes voltage error in high-impedance sensor interfaces (e.g., photodiode transimpedance amps), avoiding signal degradation from leakage paths. |
| Independent quad amplifier channels | Provides <0.15µV/V dc channel separation, enabling simultaneous processing of four analog signals without interaction-ideal for multi-channel data loggers. |
Applications
| ADC Driver Circuit | Video Line Driver |
|---|---|
Use Scenario: Driving the input of a 12-bit, 500kHz sampling ADC (e.g., ADS7861) in a portable data acquisition system powered from a single 3.3V rail. IC Role / Device Role / Timing Role: Buffer and level-shift analog sensor output to match ADC's input range while absorbing charge injection during sampling. Use Value: 44MHz GBW and 22V/µs slew rate ensure 2V step settles within 0.22µs (0.1%), preventing aperture uncertainty and maintaining ENOB >11.5 bits. | Use Scenario: Transmitting composite NTSC video signals over 75Ω coaxial cable in a single-supply security camera module operating at +5V. IC Role / Device Role / Timing Role: Active line driver providing G=2 gain, dc-bias shift, and 75Ω source termination to maintain signal integrity and minimize reflections. Use Value: Differential gain/phase errors of 0.17% and 0.17° meet broadcast-grade video specs; rail-to-rail output swings 4.95Vp-p from 5V supply. |
| Audio Preamp Stage | Process Control Signal Conditioning |
Use Scenario: Low-noise preamplification of microphone or line-level audio in a battery-powered voice recorder with 3.3V supply. IC Role / Device Role / Timing Role: First-stage gain block with selectable bandwidth limiting, followed by anti-alias filtering before ADC conversion. Use Value: 5nV/√Hz input noise density and 0.0006% THD+N preserve audio fidelity; quad configuration allows stereo L/R plus monitoring and reference paths. | Use Scenario: Isolating and scaling 4–20mA current loop sensor outputs in an industrial PLC analog input module using +5V and ground rails. IC Role / Device Role / Timing Role: Transimpedance amplifier converting current to voltage, followed by rail-to-rail output stage driving multiplexer inputs. Use Value: Input common-mode range extending –0.1V below ground accommodates sensor offsets; ±40mA output drives multiple downstream stages without gain loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4340UA | Lower bandwidth (5.5MHz), lower noise (7nV/√Hz), higher quiescent current (1.6mA per amp), same SO-14 package. | Better suited for precision DC-coupled applications (e.g., strain gauge bridges) where speed is secondary to offset drift and long-term stability. | Select OPA4340UA when ultra-low offset drift (0.25µV/°C) and 120dB CMRR outweigh need for >10MHz signal bandwidth. |
| TLV2474CD | Lower slew rate (1.5V/µs), lower bandwidth (2.8MHz), higher input bias current (6pA), same SO-14 footprint but different pinout (non-interchangeable). | Optimized for low-power sensor interfaces (600µA per amp) rather than high-speed signal routing; lacks 75Ω video drive validation. | Choose TLV2474CD only for cost-sensitive, low-bandwidth applications where 0.22µs settling is unnecessary and PCB layout can accommodate pinout rework. |
Compared with OPA4353UA, OPA4340UA trades bandwidth for superior DC precision and thermal stability, while TLV2474CD sacrifices speed and noise performance for sub-mA quiescent current-making OPA4353UA the optimal choice for time-critical, wideband analog signal paths requiring four independent high-fidelity channels.
Availability
OPA4353UA is available at Aetrix Electronics and suitable for data acquisition systems, video signal routing, audio preamplification, and industrial process control requiring stable component supply across extended temperature ranges and consistent parametric performance.
Supply support for OPA4353UA 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 Corporation in 2000 and continues to manufacture, test, and support its precision analog portfolio including the MicroAmplifier™ series.
The OPA4353UA belongs to TI's high-speed, rail-to-rail CMOS op amp product line, designed specifically for low-voltage, single-supply applications demanding wide bandwidth, low noise, and multi-channel independence in compact packages.
FAQ
What is the maximum operating supply voltage for the OPA4353UA?
The OPA4353UA is fully specified from 2.7V to 5.5V and can operate up to 5.5V continuously. Absolute maximum rating is 6.5V, but operation above 5.5V voids parametric guarantees. The device supports single-supply use down to 2.5V, though only 2.7V–5.5V is characterized over temperature.
Does the OPA4353UA support rail-to-rail input with a 3.3V supply?
Yes, the OPA4353UA guarantees rail-to-rail input operation from –0.1V to V+ + 0.1V. With a 3.3V supply, this means the input common-mode range extends from –0.1V to +3.4V-fully covering the entire supply range and enabling direct interfacing with 3.3V logic and sensors without level shifting.
Can the OPA4353UA drive a 600Ω load effectively?
Yes, the OPA4353UA delivers ±40mA output current and maintains rail-to-rail swing into 600Ω loads. At 3.3V supply, it achieves >2.5Vp-p output swing into 600Ω while retaining >100dB open-loop gain-validated in TI's typical performance curves and application notes for audio and instrumentation use cases.
Is the OPA4353UA pin-compatible with other quad op amps in SO-14 packages?
No, the OPA4353UA has a unique pinout optimized for quad independence and layout symmetry. It is not pin-compatible with industry-standard SO-14 quad op amps like LM324 or TL084. Substitution requires PCB redesign due to differences in power pin placement (V+ on Pin 12, V– on Pin 4) and output/input ordering.
What is the recommended power supply bypassing for the OPA4353UA?
Texas Instruments recommends placing a 0.01µF ceramic capacitor between each V+ (Pin 12) and V– (Pin 4) pair, located as close as possible to the respective pins. For multi-amplifier decoupling, a bulk 1µF–10µF tantalum or ceramic capacitor should be placed near the SO-14 package's power entry point on the PCB.
OPA4353UA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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 (x4 Channels)
- 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:
- 14-SOIC
OPA4353UA FAQ
1.How can I place an order for OPA4353UA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4353UA 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 OPA4353UA reliable?
The price and inventory of OPA4353UA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4353UA is usually 5 days.
3.What payment methods are accepted for OPA4353UA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4353UA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4353UA?
OPA4353UA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4353UA 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 OPA4353UA?
For technical support, including OPA4353UA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4353UA requirements.
6.How does Aetrix verify that OPA4353UA is sourced from the original manufacturer or authorized distributors?
All OPA4353UA 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 OPA4353UA meets industry standards.
7.What is the process for return or replacement of OPA4353UA?
All OPA4353UA units undergo pre-shipment inspection (PSI). If there is an issue with OPA4353UA, 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 OPA4353UA part is unused and in its original packaging.
Return procedure for OPA4353UA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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