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Texas Instruments OPA2353UAG4
- Part No.:
- OPA2353UAG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2353UAG4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,833
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Product details
Overview
OPA2353UAG4 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 to 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 with 10kΩ load - enabling high-fidelity signal conditioning in space-constrained analog front-ends.
For engineers reviewing the OPA2353UAG4 datasheet, OPA2353UAG4 pinout, OPA2353UAG4 application, or OPA2353UAG4 equivalent, key selection criteria include rail-to-rail dynamic range at 2.7V supply, 75Ω video line drive capability, unity-gain stability, low quiescent current (5.2–9mA per amplifier), and SOIC-8 packaging compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The OPA2353UAG4 employs a complementary CMOS input stage (N- and P-channel differential pairs) enabling rail-to-rail input common-mode range extending 100mV beyond supply rails. Its double-folded cascode architecture combines signals from both input pairs before driving a class AB output stage, ensuring low distortion and fast settling (0.22µs to 0.1%).
Designed for unity-gain stability, it maintains >100dB open-loop gain (RL = 10kΩ) across –40°C to +85°C and supports capacitive loads up to 100pF without external compensation. Channel separation exceeds 120dB at 1kHz, minimizing crosstalk in dual-channel signal paths.
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 filters and ADC driver bandwidths. |
| Slew Rate | 22V/µs - supports full-scale 2V step settling in ≤0.22µs at 0.1%, critical for driving SAR and sigma-delta ADC inputs without slewing distortion. |
| 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 high-fidelity audio and instrumentation requirements where harmonic purity is essential. |
| Rail-to-Rail Output Swing | Within 10mV of V+ and V– with 10kΩ load - maximizes dynamic range in 3.3V or 5V systems, preserving >99% of theoretical signal amplitude. |
| Quiescent Current | 5.2–9mA per amplifier - balances speed and power efficiency for battery-powered or thermally constrained designs. |
| Common-Mode Rejection Ratio | 76–86dB (typ.) - suppresses supply ripple and shared-noise coupling in single-supply configurations with dc-biased inputs. |
Pinout & Package
OPA2353UAG4 is housed in an 8-pin SOIC (SO-8) surface-mount package (Package Drawing D), with thermal resistance θJA = 150°C/W. Pin assignments are electrically identical to the MSOP-8 variant (OPA2353EA), supporting drop-in replacement in board layouts where footprint allows.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Amplifier A output - drives external load; capable of ±40mA continuous output current into resistive loads. |
| 2 | –In A | Inverting input of Amplifier A - high-impedance node (1013Ω || 6.5pF); requires careful layout to minimize capacitive coupling. |
| 3 | +In A | Non-inverting input of Amplifier 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 ground or negative rail; must be bypassed with 0.01µF ceramic capacitor near the pin. |
| 5 | V+ | Positive supply rail - accepts 2.7V to 5.5V; bypassing required to maintain PSRR >74dB at 10kHz. |
| 6 | +In B | Non-inverting input of Amplifier B - independent of Amplifier A; no crosstalk below –120dB at 1kHz. |
| 7 | –In B | Inverting input of Amplifier B - fully isolated circuitry; enables dual-channel signal processing without interaction. |
| 8 | Out B | Amplifier B output - functionally identical to Pin 1; supports simultaneous dual-channel operation with matched AC performance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Common-mode range extends 100mV beyond V+ and V–, enabling direct interfacing with unbuffered ADC references or DAC outputs without level-shifting. |
| Rail-to-rail output | Swings to within 10mV of supply rails under light load, preserving maximum signal headroom in low-voltage (2.7V) systems. |
| Unity-gain stable | Operates reliably with G = 1 configuration without external compensation, simplifying filter and buffer design. |
| Low THD+N | 0.0006% at 1kHz ensures minimal harmonic corruption in audio line drivers and precision measurement front-ends. |
| 75Ω video drive | Capable of driving standard composite video loads with <0.17% differential gain/phase error, eliminating need for external buffers in portable video systems. |
Applications
| Cell Phone PA Control Loop | ADC Driver for Medium-Speed Sampling |
|---|---|
Use Scenario: Closed-loop control of power amplifier output power in GSM/EDGE handsets using RSSI feedback. IC Role / Device Role / Timing Role: Dual op-amp configures one channel as integrator for loop filter and second as comparator/reference buffer. Use Value: Rail-to-rail I/O enables full utilization of 2.8V supply; 44MHz GBW supports loop bandwidth >1MHz for fast PA settling. | Use Scenario: Buffering and gain-setting stage preceding 12-bit, 500kHz SAR ADC (e.g., ADS7861) in data acquisition modules. IC Role / Device Role / Timing Role: Drives ADC sample-and-hold input while absorbing charge injection; configured in G = 1 or G = 2 non-inverting topology. Use Value: 22V/µs slew rate prevents distortion on 2V steps; 5nV/√Hz noise contributes <0.5 LSB error in 12-bit system at 10kHz bandwidth. |
| Composite Video Line Driver | Audio Line-Level Signal Conditioning |
Use Scenario: Single-supply G = 2 video driver for NTSC/PAL signals in portable media players or security cameras. IC Role / Device Role / Timing Role: Amplifies ac-coupled video signal with dc bias shift; drives 75Ω coaxial cable termination. Use Value: Differential gain/phase errors of 0.17% and 0.17° meet broadcast video fidelity standards; rail-to-rail output sustains sync tip-to-white peak swing. | Use Scenario: Low-noise preamplifier and output buffer in portable audio codecs or headphone amplifiers. IC Role / Device Role / Timing Role: First-stage gain block (G = 10) followed by unity-gain output buffer to isolate source from variable load. Use Value: 0.0006% THD+N preserves stereo imaging integrity; 5nV/√Hz input noise yields >110dB SNR in 20kHz bandwidth with 10kΩ source impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2353EA/2K5 | Identical electrical specs; packaged in MSOP-8 (DGK) instead of SOIC-8 (D); θJA = 150°C/W same, but smaller footprint (3mm × 3mm vs 6mm × 4.9mm). | Preferred for ultra-compact PCBs; requires rework of land pattern and stencil; not mechanically interchangeable with SOIC-8. | Select when board area is constrained and assembly process supports MSOP handling. |
| TLV2462IDR | Lower GBW (6.4MHz), slower slew rate (1.6V/µs), higher input offset (±1.5mV), but lower IQ (0.55mA per amp); rail-to-rail I/O supported. | Better suited for low-power sensor interfaces or battery-operated devices where speed is secondary to current draw. | Choose for <1mA per amplifier requirement; avoid where >10MHz signal bandwidth or fast settling is needed. |
Compared with OPA2353UAG4, the OPA2353EA/2K5 offers identical performance in a smaller package but demands layout revision, while TLV2462IDR trades significant bandwidth and speed for >90% reduction in quiescent current - making it viable only in low-frequency, power-sensitive roles.
Availability
OPA2353UAG4 is available at Aetrix Electronics and suitable for cell phone PA control loops, composite video line drivers, medium-speed ADC front-ends, audio signal chains, and industrial sensor interfaces requiring stable component supply across extended temperature ranges.
Supply support for OPA2353UAG4 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 continues its legacy of precision analog ICs, emphasizing high-performance, low-power, and application-optimized solutions for industrial, automotive, and communications markets.
The OPA2353UAG4 belongs to TI's MicroAmplifier™ series, designed specifically for miniature, low-voltage, single-supply systems demanding rail-to-rail operation, high speed, and low noise - such as portable medical devices, handheld test equipment, and consumer video/audio electronics.
FAQ
What is the operating voltage range for OPA2353UAG4?
The OPA2353UAG4 operates from a single supply of 2.7V to 5.5V, with guaranteed specifications over this range. It can tolerate down to 2.5V minimum supply voltage, though parameters are not fully specified below 2.7V. This makes OPA2353UAG4 suitable for modern 3.3V and 5V systems, including battery-powered applications where supply voltage may sag.
Does OPA2353UAG4 support rail-to-rail input and output simultaneously?
Yes, OPA2353UAG4 supports rail-to-rail input common-mode voltage range (–0.1V to V+ + 0.1V) and rail-to-rail output swing (within 10mV of V+ and V– with 10kΩ load). This dual rail-to-rail capability allows full-scale signal handling in low-voltage single-supply configurations without external level-shifting circuitry - a key advantage in OPA2353UAG4 for ADC driver and video line driver use cases.
Is OPA2353UAG4 unity-gain stable?
Yes, OPA2353UAG4 is explicitly unity-gain stable per its datasheet and application notes. It does not require external compensation in G = 1 configurations, including voltage followers and non-inverting buffers. This simplifies design for OPA2353UAG4 in precision reference buffering and high-impedance sensor interface applications where minimal phase shift and predictable settling are critical.
What is the thermal resistance (θJA) of the OPA2353UAG4 package?
The OPA2353UAG4 uses an SOIC-8 (D) package with a junction-to-ambient thermal resistance (θJA) of 150°C/W, as specified in the official TI datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance improves with additional copper pour and thermal vias. Designers should verify junction temperature stays below 150°C under worst-case power dissipation (≤144mW per amplifier at 5.5V, 9mA).
Can OPA2353UAG4 drive 75Ω video loads directly?
Yes, OPA2353UAG4 is characterized for 75Ω video line driving with differential gain and phase errors of 0.17% and 0.17° respectively under NTSC conditions. Its class AB output stage delivers sufficient current (±40mA) and bandwidth (44MHz) to maintain signal fidelity into 75Ω, eliminating the need for external buffer stages in portable video applications - a verified capability documented in the OPA2353UAG4 datasheet Figure 6 and Applications Information section.
OPA2353UAG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
OPA2353UAG4 FAQ
1.How can I place an order for OPA2353UAG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2353UAG4 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 OPA2353UAG4 reliable?
The price and inventory of OPA2353UAG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2353UAG4 is usually 5 days.
3.What payment methods are accepted for OPA2353UAG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2353UAG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2353UAG4?
OPA2353UAG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2353UAG4 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 OPA2353UAG4?
For technical support, including OPA2353UAG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2353UAG4 requirements.
6.How does Aetrix verify that OPA2353UAG4 is sourced from the original manufacturer or authorized distributors?
All OPA2353UAG4 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 OPA2353UAG4 meets industry standards.
7.What is the process for return or replacement of OPA2353UAG4?
All OPA2353UAG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2353UAG4, 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 OPA2353UAG4 part is unused and in its original packaging.
Return procedure for OPA2353UAG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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