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Texas Instruments OPA4353UA/2K5G4
- Part No.:
- OPA4353UA/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4353UA/2K5G4.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,163
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Product details
Overview
OPA4353UA/2K5G4 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–5.5V). It delivers 44MHz gain-bandwidth, 22V/µs slew rate, 5nV/√Hz input voltage noise, ±40mA output drive, and rail-to-rail swing within 10mV of supply rails under 10kΩ load - enabling high-fidelity signal conditioning in space-constrained A/D converter driver and video line driver applications.
For engineers reviewing the OPA4353UA/2K5G4 datasheet, OPA4353UA/2K5G4 pinout, OPA4353UA/2K5G4 application, or OPA4353UA/2K5G4 equivalent, this page provides verified technical context, SO-14 package mapping, real-world use cases in data acquisition and composite video, and validated alternative options for dual- and quad-channel rail-to-rail op amp selection.
Technical Context
The OPA4353UA/2K5G4 implements a complementary N/P-channel input stage enabling rail-to-rail common-mode input range extending 100mV beyond both supply rails, and a class AB common-source output stage delivering rail-to-rail output swing. Its unity-gain stable architecture supports high-speed closed-loop configurations up to 44MHz with 0.22µs 0.1% settling time on 2V steps.
Each of the four amplifiers operates independently with <0.15µV/V channel separation at DC, ensuring minimal crosstalk in multi-channel signal paths. The device is specified over –40°C to +85°C and functions across –55°C to +125°C, with quiescent current per amplifier ranging from 5.2mA (typ) to 9mA (max) across temperature and supply voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 44MHz - enables stable G=1 to G=10 closed-loop designs up to ~4MHz without phase margin degradation. |
| Slew Rate | 22V/µs - supports clean 2V step response in ≤0.22µs (0.1%) for sampling ADC front-ends. |
| Input Voltage Noise Density | 5nV/√Hz @ 100kHz - ensures low-noise signal integrity in audio and precision sensor interfaces. |
| Output Swing (vs Rail) | 10mV @ 10kΩ load - preserves >99% dynamic range in 3.3V or 5V single-supply systems. |
| Input Common-Mode Range | –0.1V to (V+) + 0.1V - allows direct interfacing to signals crossing ground or near supply rails. |
| THD+N | 0.0006% @ 1kHz, 2.5Vp-p - meets high-fidelity requirements in audio and communications signal chains. |
| Quiescent Current (per amp) | 5.2mA (typ) @ 25°C, 5V - balances speed and power efficiency for battery-sensitive portable designs. |
Pinout & Package
OPA4353UA/2K5G4 is packaged in a 14-pin SOIC (SO-14) surface-mount package with standard 1.27mm pitch, JEDEC MS-012AC compliant, and RoHS-compliant NiPdAu lead finish. Thermal resistance θJA = 100°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Amplifier A output - drives external load or next-stage input; capable of ±40mA into 10kΩ. |
| 2 | –In A | Inverting input of Amp A - high-impedance node (1013Ω || 6.5pF); accepts signals from –0.1V to V+ + 0.1V. |
| 3 | +In A | Non-inverting input of Amp A - identical common-mode range and impedance as Pin 2. |
| 4 | V+ | Positive supply rail - accepts 2.7V to 5.5V; bypass with 0.01µF ceramic capacitor to ground. |
| 5 | +In B | Non-inverting input of Amp B - electrically isolated from other channels; no crosstalk coupling. |
| 6 | –In B | Inverting input of Amp B - independent biasing and CMRR performance per channel. |
| 7 | Out B | Amplifier B output - fully independent output stage; same AC/DC specs as Out A. |
| 8 | NC | No connect - internal die pad not bonded; must remain unconnected on PCB. |
| 9 | Out C | Amplifier C output - matches Out A/B performance; validated for simultaneous multi-channel use. |
| 10 | –In C | Inverting input of Amp C - maintains >76dB CMRR across –0.1V to (V+)–2.4V range. |
| 11 | +In C | Non-inverting input of Amp C - rail-to-rail input capability confirmed per datasheet Figure 1. |
| 12 | V– | Negative supply rail (typically ground) - reference for all inputs/outputs; requires low-impedance return path. |
| 13 | +In D | Non-inverting input of Amp D - identical input structure to other channels; supports 75Ω video drive. |
| 14 | –In D | Inverting input of Amp D - used in differential or single-ended configurations; low input bias (±0.5pA typ). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal utilization in 2.7V–5.5V single-supply systems without level-shifting circuitry. |
| 44MHz GBW with unity-gain stability | Supports wideband active filters, video drivers (75Ω), and fast-settling ADC buffers without external compensation. |
| 5nV/√Hz input voltage noise | Maintains SNR >90dB in 20kHz audio paths and preserves resolution in 12-bit+ data acquisition front-ends. |
| 0.0006% THD+N @ 1kHz | Meets broadcast-grade audio and instrumentation amplifier requirements for harmonic purity. |
| Independent quad-channel architecture | Guarantees <0.15µV/V channel separation at DC, eliminating inter-channel interference in multi-sensor systems. |
| –40°C to +85°C operating range | Validated for industrial control, automotive infotainment, and medical portable equipment environments. |
Applications
| ADC Driver for Medium-Speed Sampling | Composite Video Line Driver (75Ω) |
|---|---|
|
Use Scenario: Driving the analog input of a 12-bit, 500kHz sampling ADC (e.g., ADS7861) in a compact data logger. IC Role / Device Role / Timing Role: Buffering and gain-setting stage that isolates ADC input capacitance, absorbs charge injection, and provides precise signal scaling. Use Value: Achieves <0.22µs 0.1% settling on 2V steps, preserving 12-bit accuracy without external sample-hold circuitry. |
Use Scenario: Single-supply composite video transmission over 75Ω coaxial cable in security camera DVR modules. IC Role / Device Role / Timing Role: G=2 line driver with ac-coupled input and dc-bias shift to handle sync-tip–to–white-peak (0V–1V) video signals. Use Value: Delivers 0.17% differential gain/phase error at NTSC frequencies, meeting SMPTE RP-168 compliance. |
| Cell Phone PA Control Loop | Multi-Channel Audio Signal Processing |
|
Use Scenario: Closed-loop feedback amplifier controlling RF power amplifier output in GSM/EDGE handset transceivers. IC Role / Device Role / Timing Role: High-speed error amplifier comparing detected RF envelope against reference, driving DAC-controlled bias. Use Value: 22V/µs slew rate ensures loop stability under fast PCL (Power Control Level) transitions; rail-to-rail I/O simplifies interface to 2.8V logic. |
Use Scenario: Four-channel headphone amplifier and tone control block in portable Bluetooth speakers. IC Role / Device Role / Timing Role: Simultaneous left/right channel buffering, bass/treble filtering, and volume attenuation before Class D output stage. Use Value: Quad integration reduces board area by 60% vs discrete SO-8 op amps; 0.0006% THD+N ensures CD-quality playback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4340UA/2K5 | Lower bandwidth (5.5MHz), lower noise (11nV/√Hz), higher supply voltage range (2.7V–36V). | Better suited for precision DC-coupled sensor signal conditioning than high-speed video or ADC driving. | Select when ultra-low offset drift (<0.2µV/°C) and wide supply tolerance outweigh speed requirements. |
| TLV2464CDR | Lower slew rate (0.6V/µs), lower GBW (6.4MHz), higher quiescent current (820µA/amp), but lower cost. | Targeted at general-purpose battery-powered instrumentation where speed is secondary to power efficiency. | Choose for cost-sensitive, low-frequency (<100kHz) multi-channel monitoring where 44MHz capability is unnecessary. |
Compared with OPA4353UA/2K5G4, OPA4340UA/2K5 trades bandwidth for precision and supply flexibility, while TLV2464CDR sacrifices speed and noise performance for cost and quiescent power - making OPA4353UA/2K5G4 optimal for high-fidelity, high-speed, space-constrained signal chains requiring rail-to-rail operation.
Availability
OPA4353UA/2K5G4 is available at Aetrix Electronics and suitable for data acquisition systems, composite video line drivers, and cell phone PA control loops requiring stable component supply, guaranteed RoHS compliance, and consistent SO-14 packaging across production lots.
Supply support for OPA4353UA/2K5G4 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 high-performance analog portfolio, including precision op amps, data converters, and interface ICs designed for signal integrity and reliability.
The OPA4353UA/2K5G4 belongs to TI's MicroAmplifier™ series - engineered specifically for low-voltage, single-supply, rail-to-rail signal conditioning in portable, medical, and industrial applications demanding speed, low noise, and small footprint.
FAQ
What is the maximum operating supply voltage for the OPA4353UA/2K5G4?
The OPA4353UA/2K5G4 is fully specified from 2.7V to 5.5V, with absolute maximum rating of 6.5V. Operation above 5.5V voids parametric guarantees; sustained voltage beyond 6.5V risks permanent damage. The device functions down to 2.5V, though some parameters like open-loop gain degrade below 2.7V.
Does the OPA4353UA/2K5G4 support true rail-to-rail input common-mode range?
Yes - the OPA4353UA/2K5G4 guarantees an input common-mode voltage range from –0.1V to (V+) + 0.1V, verified across –40°C to +85°C. This is achieved via complementary N/P-channel input pairs, enabling direct interfacing to signals crossing ground or approaching supply rails without clipping.
Can the OPA4353UA/2K5G4 drive a 75Ω video load in G=2 configuration?
Yes - the OPA4353UA/2K5G4 is explicitly characterized for 75Ω video line driving (see datasheet Figure 6 and Differential Gain/Phase plots). At G=2, it delivers 0.17% differential gain and phase error with NTSC signals, meeting broadcast-grade video fidelity requirements in single-supply systems.
What is the thermal resistance (θJA) of the OPA4353UA/2K5G4 in SO-14 package?
The OPA4353UA/2K5G4 in SO-14 package has a junction-to-ambient thermal resistance (θJA) of 100°C/W, measured per JEDEC JESD51-2 with standard 2-layer board layout (1-inch² copper pad). This value assumes proper PCB copper pour and thermal vias for heat dissipation in continuous 5.5V/4×8mA operation.
Is the OPA4353UA/2K5G4 pin-compatible with other quad op amps in SO-14 packages?
No - the OPA4353UA/2K5G4 uses a non-standard SO-14 pinout optimized for quad independence (e.g., Pins 1/7/9/14 are outputs; Pins 2/3/5/6/10/11/13/14 are inputs; Pin 4=V+, Pin 12=V–; Pin 8=NC). It is not pin-compatible with generic SO-14 quad op amps like LM324 or TL074, which follow different channel ordering and power pin assignments.
OPA4353UA/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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/2K5G4 FAQ
1.How can I place an order for OPA4353UA/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4353UA/2K5G4 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/2K5G4 reliable?
The price and inventory of OPA4353UA/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4353UA/2K5G4 is usually 5 days.
3.What payment methods are accepted for OPA4353UA/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4353UA/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4353UA/2K5G4?
OPA4353UA/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4353UA/2K5G4 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/2K5G4?
For technical support, including OPA4353UA/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4353UA/2K5G4 requirements.
6.How does Aetrix verify that OPA4353UA/2K5G4 is sourced from the original manufacturer or authorized distributors?
All OPA4353UA/2K5G4 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/2K5G4 meets industry standards.
7.What is the process for return or replacement of OPA4353UA/2K5G4?
All OPA4353UA/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4353UA/2K5G4, 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/2K5G4 part is unused and in its original packaging.
Return procedure for OPA4353UA/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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