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Texas Instruments OPA2353UA/2K5G4
- Part No.:
- OPA2353UA/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2353UA/2K5G4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,576
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Product details
Overview
OPA2353UA/2K5G4 from Texas Instruments (formerly Burr-Brown) is a dual, 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, <0.0006% THD+N at 1kHz, and output swing within 10mV of rails under 10kΩ load - enabling high-fidelity signal conditioning in space-constrained analog front-ends.
For engineers reviewing the OPA2353UA/2K5G4 datasheet, OPA2353UA/2K5G4 pinout, OPA2353UA/2K5G4 application, or OPA2353UA/2K5G4 equivalent, this page provides verified technical context, package-specific pin mapping, real-world application constraints, and validated alternative options for A/D driver, video line, and PA control loop designs.
Technical Context
The OPA2353UA/2K5G4 implements a complementary N/P-channel input stage enabling rail-to-rail common-mode input range extending 300mV beyond supply rails, with a defined 400mV transition region where both pairs conduct. Its class AB output stage achieves rail-to-rail output swing while maintaining >100dB open-loop gain up to ±200mV from rails under 10kΩ load.
Designed on a 0.6µm CMOS process, it features unity-gain stability, 9pF typical input capacitance, and robust capacitive load drive capability - supporting stable operation with ≥100pF loads in G=1 configuration and improved tolerance at higher closed-loop gains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 44MHz - supports stable closed-loop operation up to ~20MHz at G=2 for anti-alias filtering or buffer applications. |
| Slew Rate | 22V/µs - enables clean 2V step response settling to 0.1% in 0.22µs, critical for driving SAR ADC sample-and-hold inputs. |
| Input Voltage Noise Density | 5nV/√Hz at 100kHz - ensures minimal added noise in audio and precision sensor signal chains operating above 10kHz. |
| THD+N | 0.0006% at 1kHz, RL=600Ω - meets broadcast-grade audio and high-resolution data acquisition distortion requirements. |
| Rail-to-Rail Output Swing | Within 10mV of V+ and V− with 10kΩ load - maximizes dynamic range in 3.3V or 5V single-supply systems without level-shifting. |
| Quiescent Current per Amplifier | 5.2mA typical at VS=5V - balances speed and power for battery-sensitive portable instrumentation and handheld test gear. |
| Input Common-Mode Range | –0.1V to (V+) + 0.1V - allows direct interfacing to sensors or DACs operating near supply rails without external biasing. |
Pinout & Package
OPA2353UA/2K5G4 is packaged in an SO-8 surface-mount package (Package Drawing D), with thermal resistance θJA = 150°C/W. Pin numbering follows standard SOIC convention (counterclockwise from notch).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Amplifier A output - drives external load; capable of ±40mA continuous current into resistive loads. |
| 2 | –In A | Inverting input for Amplifier A - high-impedance node (10¹³Ω || 6.5pF); requires matched trace impedance in differential configurations. |
| 3 | +In A | Non-inverting input for Amplifier A - same high-impedance characteristics; input protection diodes clamp to rails ±0.3V. |
| 4 | V– | Negative supply pin - must be bypassed with 0.01µF ceramic capacitor close to pin; connects to ground in single-supply use. |
| 5 | V+ | Positive supply pin - accepts 2.7V–5.5V; bypassing required; supplies both amplifiers in dual configuration. |
| 6 | +In B | Non-inverting input for Amplifier B - electrically isolated from Amplifier A; channel separation >120dB at 1kHz. |
| 7 | –In B | Inverting input for Amplifier B - independent bias current path; input offset current ≤±10pA over temperature. |
| 8 | Out B | Amplifier B output - fully independent output stage; no crosstalk-induced distortion in dual-channel signal routing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 300mV beyond supply rails - eliminates need for external level-shifting in low-voltage sensor interfaces. |
| Rail-to-rail output swing (10mV) | Preserves full signal amplitude in 3.3V systems - avoids clipping in video line drivers and audio buffers. |
| 75Ω video drive capability | Supports composite video transmission without external buffer - verified per NTSC test conditions with <0.17% differential gain error. |
| Unity-gain stable | Operates reliably at G=1 without external compensation - simplifies design of active filters and I/V converters. |
| Low input bias current (±0.5pA typ) | Minimizes voltage error in high-impedance photodiode or piezoelectric sensor front-ends. |
| Specified –40°C to +85°C | Guaranteed performance across industrial temperature range - suitable for embedded control and automotive body electronics. |
Applications
| Cell Phone PA Control Loop | Driving Sampling A/D Converters |
|---|---|
Use Scenario: Closed-loop feedback control of power amplifier output power in GSM/EDGE handset transmitters. IC Role / Device Role / Timing Role: High-speed error amplifier comparing detected RF envelope against reference, requiring fast settling and low noise. Use Value: 22V/µs slew rate and 0.22µs 0.1% settling enable accurate envelope tracking at burst rates up to 217Hz without lag-induced distortion. |
Use Scenario: Buffering and gain-setting stage before medium-speed SAR or sigma-delta ADCs (e.g., ADS7861, 500kHz sampling). IC Role / Device Role / Timing Role: Drives ADC input capacitance while absorbing charge injection kickback; operates in unity-gain or G=2 configuration. Use Value: Rail-to-rail output swing preserves full ADC input range; 44MHz GBW ensures flat frequency response through Nyquist band. |
| Video Line Driver (75Ω) | Audio Signal Processing |
Use Scenario: Single-supply composite video distribution to multiple monitors or recording devices via coaxial cable. IC Role / Device Role / Timing Role: G=2 non-inverting line driver with DC bias shift, delivering 1.4Vpp NTSC signal into 75Ω load. Use Value: Verified <0.17% differential gain/phase error ensures color fidelity; rail-to-rail output sustains sync tip-to-white peak swing. |
Use Scenario: Low-noise preamplifier and active filter stage in portable audio codecs or microphone interface ICs. IC Role / Device Role / Timing Role: First-stage gain block with 5nV/√Hz noise density and <0.0006% THD+N at 1kHz. Use Value: Enables >110dB SNR in 24-bit audio paths; class AB output drives 600Ω headphones directly without external buffer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2350UA | Lower 1.5MHz GBW, 1.5V/µs slew rate, but lower 1.1mA IQ per amplifier. | Better suited for low-power, low-bandwidth sensor conditioning; insufficient for >100kHz video or fast-settling ADC drive. | Select when power budget <2mA/amplifier dominates over speed; not drop-in for OPA2353UA/2K5G4 timing-critical roles. |
| AD8662ARZ | 16MHz GBW, 12V/µs slew rate, 5.5V max supply, 0.5µV/°C offset drift vs OPA2353's ±5µV/°C. | Higher precision offset and drift; better for DC-coupled instrumentation; lacks 75Ω video drive validation. | Prefer for precision DC measurement; avoid where 44MHz bandwidth or NTSC-compliant video performance is required. |
Compared with OPA2353UA/2K5G4, OPA2350UA trades bandwidth and slew for quiescent current reduction, while AD8662ARZ improves DC accuracy at the expense of AC performance and video-specific drive capability - making OPA2353UA/2K5G4 uniquely balanced for mixed-signal, high-fidelity, single-supply systems.
Availability
OPA2353UA/2K5G4 is available at Aetrix Electronics and suitable for cell phone PA control loops, video line drivers, A/D converter front-ends, and audio signal processing requiring stable component supply, RoHS-compliant packaging, and guaranteed industrial temperature operation.
Supply support for OPA2353UA/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, emphasizing precision, speed, and low-power innovation across industrial, automotive, and communications markets.
The OPA2353UA/2K5G4 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 SO-8 and MSOP-8 packages.
FAQ
What supply voltage range is supported by the OPA2353UA/2K5G4?
The OPA2353UA/2K5G4 operates from 2.7V to 5.5V over the full –40°C to +85°C temperature range, with functional operation down to 2.5V. All key specifications - including gain-bandwidth, slew rate, and output swing - are guaranteed across the 2.7V–5.5V range. This makes OPA2353UA/2K5G4 suitable for both 3.3V and 5V systems without derating.
Does the OPA2353UA/2K5G4 require external compensation for unity-gain stability?
No - the OPA2353UA/2K5G4 is internally compensated and unity-gain stable. It does not require external capacitors for stability in G=1 configurations. However, for high-impedance feedback networks (e.g., RF >100kΩ), adding a small feedback capacitor (CF) across RF may improve settling time and reduce peaking, per the recommended design equation RIN·CIN = RF·CF.
Can the OPA2353UA/2K5G4 drive a 75Ω video load with NTSC compliance?
Yes - the OPA2353UA/2K5G4 is explicitly characterized for 75Ω video drive. At G=2, VO=1.4Vpp NTSC signal, it achieves 0.17% differential gain error and 0.17° differential phase error, meeting broadcast video fidelity requirements. The rail-to-rail output ensures full sync-tip-to-white-peak swing on a single 5V supply.
What is the maximum capacitive load the OPA2353UA/2K5G4 can drive stably?
The OPA2353UA/2K5G4 remains stable with ≥100pF capacitive loads in unity-gain configuration when driving a 1kΩ resistive load. Stability improves with higher closed-loop gain. For loads >500pF, adding a small series resistor (10–50Ω) between output and capacitive load is recommended to isolate the op amp's output impedance from the reactive load.
How does channel separation perform in the OPA2353UA/2K5G4 at high frequencies?
Channel separation in the OPA2353UA/2K5G4 exceeds 120dB at 1kHz and remains >80dB up to 1MHz, due to fully independent internal circuitry for each amplifier. This prevents crosstalk-induced intermodulation in dual-channel applications such as stereo audio buffering or differential sensor signal conditioning.
OPA2353UA/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- 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 (x2 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:
- 8-SOIC
OPA2353UA/2K5G4 FAQ
1.How can I place an order for OPA2353UA/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2353UA/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 OPA2353UA/2K5G4 reliable?
The price and inventory of OPA2353UA/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2353UA/2K5G4 is usually 5 days.
3.What payment methods are accepted for OPA2353UA/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2353UA/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2353UA/2K5G4?
OPA2353UA/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2353UA/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 OPA2353UA/2K5G4?
For technical support, including OPA2353UA/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2353UA/2K5G4 requirements.
6.How does Aetrix verify that OPA2353UA/2K5G4 is sourced from the original manufacturer or authorized distributors?
All OPA2353UA/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 OPA2353UA/2K5G4 meets industry standards.
7.What is the process for return or replacement of OPA2353UA/2K5G4?
All OPA2353UA/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2353UA/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 OPA2353UA/2K5G4 part is unused and in its original packaging.
Return procedure for OPA2353UA/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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