My Inquiry
My Account
Texas Instruments OPA350UAG4
- Part No.:
- OPA350UAG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA350UAG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,392
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA350UAG4 from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-voltage, single-supply operation. It delivers 38 MHz gain-bandwidth, 22 V/µs slew rate, and 5 nV/√Hz input voltage noise, enabling high-fidelity signal conditioning in space-constrained A/D converter driver and video line-driver applications with 75-Ω load capability.
For engineers reviewing the OPA350UAG4 datasheet, OPA350UAG4 pinout, OPA350UAG4 application, or OPA350UAG4 equivalent, key selection criteria include rail-to-rail swing within 10 mV of supply rails at 10-kΩ load, THD+N of 0.0006% at 1 kHz, and guaranteed operation from 2.7 V to 5.5 V across −40°C to 85°C.
Technical Context
The OPA350UAG4 employs a complementary CMOS input stage-parallel N-channel and P-channel differential pairs-to achieve rail-to-rail input common-mode range extending 100 mV beyond both supply rails. Its class AB output stage enables rail-to-rail output swing while maintaining >100 dB open-loop gain up to 10 kHz.
It features unity-gain stability and drives capacitive loads up to 100 pF without external compensation. The device uses laser trimming to minimize offset voltage mismatch between input stages, ensuring smooth transition behavior and stable CMRR/PSRR outside the ±400-mV internal transition region.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 38 MHz - supports stable closed-loop gain ≥10 up to ~3.8 MHz, suitable for medium-speed ADC buffering. |
| Slew rate | 22 V/µs - enables clean 2.5 VPP output at 1 MHz without slewing distortion in G = 1 configuration. |
| Input voltage noise density | 5 nV/√Hz at 10 kHz - preserves SNR in audio and precision sensor interfaces with bandwidth <100 kHz. |
| THD+N | 0.0006% at 1 kHz, RL = 600 Ω, VO = 2.5 VPP - meets broadcast-grade video and high-fidelity audio requirements. |
| Output swing from rail | ≤10 mV at 10-kΩ load - maximizes dynamic range in 3.3 V or 5 V single-supply systems. |
| Supply voltage range | 2.7 V to 5.5 V - operates from Li-ion battery (3.0–4.2 V) or regulated 3.3 V/5 V rails without level-shifting. |
| Quiescent current | 5.2 mA per amplifier - balances speed and power for portable instrumentation and battery-powered signal chains. |
Pinout & Package
The OPA350UAG4 is housed in an 8-pin SOIC (D) package measuring 3.91 mm × 4.90 mm, with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No connect (NC) | Internally unconnected; must be left floating or tied to ground per layout best practice. |
| 2 | Inverting input (−In) | Differential input node; accepts signals from −0.1 V to (V+) + 0.1 V with rail-to-rail CM range. |
| 3 | Noninverting input (+In) | Differential input node; same CM range as Pin 2; laser-trimmed for matched bias current (<10 pA). |
| 4 | Negative supply (V−) | Ground reference for single-supply operation; supports inputs down to −0.1 V relative to this pin. |
| 5 | No connect (NC) | Internally unconnected; no electrical function; avoid routing signals or traces to this pad. |
| 6 | Output | Class AB rail-to-rail output capable of sourcing/sinking ±40 mA; swings to within 10 mV of V− or V+ under 10-kΩ load. |
| 7 | Positive supply (V+) | Single-supply input; accepts 2.7–5.5 V; requires local 0.01 µF ceramic bypass capacitor to V−. |
| 8 | No connect (NC) | Internally unconnected; electrically isolated; PCB pad may be used for thermal relief or grounding if needed. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | CM range extends 100 mV beyond both supply rails, enabling direct interfacing with DAC outputs or sensors near supply limits. |
| Rail-to-rail output | Swings within 10 mV of V+ and V− at light loads, preserving >99% of available voltage headroom in 3.3 V systems. |
| Low THD+N | 0.0006% at 1 kHz ensures minimal harmonic contamination in video sync pulses and audio midband signals. |
| 75-Ω drive capability | Stable into 75-Ω video loads with <0.17% differential gain/phase error, meeting NTSC/PAL broadcast linearity specs. |
| Unity-gain stable | No external compensation required for G ≥ 1 configurations, simplifying layout and reducing BOM count in buffer applications. |
Applications
| Cell Phone PA Control Loop | Driving A/D Converters |
|---|---|
Use Scenario: Closed-loop feedback path controlling RF power amplifier output in GSM/UMTS handset front-end. IC Role / Device Role / Timing Role: Precision DC-coupled error amplifier comparing detected PA output to reference voltage. Use Value: Rail-to-rail input captures full detector range (0–3.3 V); low offset drift (±4 µV/°C) maintains loop accuracy over temperature. | Use Scenario: Buffering analog sensor output before sampling by 12-bit, 500 kSPS ADC (e.g., ADS7861). IC Role / Device Role / Timing Role: High-speed, low-noise driver isolating ADC input capacitance and absorbing charge kickback. Use Value: 22 V/µs slew rate settles 2.5 V step in ≤0.5 µs (0.01%); 38 MHz GBW supports anti-alias filtering up to 5 MHz. |
| Video Processing | Audio Processing |
Use Scenario: Driving 75-Ω coaxial video lines in portable media players or HDMI transmitter sideband circuits. IC Role / Device Role / Timing Role: Line driver delivering composite video (CVBS) or Y/C signals with minimal group delay variation. Use Value: 0.17% differential gain/phase error preserves color fidelity; 5 nV/√Hz noise avoids visible snow in 480i/576i displays. | Use Scenario: Low-noise preamplifier stage in battery-powered headphone amplifiers or portable audio codecs. IC Role / Device Role / Timing Role: Gain-setting stage with DC-coupled input and rail-to-rail output driving 32-Ω or 10-kΩ loads. Use Value: 0.0006% THD+N at 1 kHz ensures transparent audio reproduction; 5.2 mA IQ enables >10-hour runtime on coin-cell batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA350UA | Same die, identical electrical specs; differs only in tape-and-reel packaging (UAG4 = tube, UA = reel). | No functional difference; both rated for −40°C to 85°C; same SOIC-8 footprint and pinout. | Select OPA350UA for automated SMT assembly; OPA350UAG4 for prototyping or low-volume hand-soldering. |
| TLV2462CDR | Lower GBW (6.4 MHz), slower slew rate (1.6 V/µs), higher THD+N (0.003%), but lower IQ (550 µA). | Not suitable for >100 kHz video or fast-settling ADC drivers; acceptable for DC-coupled sensor buffers or audio line-outs. | Choose TLV2462CDR only when power budget is critical and bandwidth <1 MHz suffices. |
Compared with OPA350UAG4, OPA350UA offers identical performance in reel format for production use, while TLV2462CDR trades speed and linearity for ultra-low quiescent current-making it viable only in low-bandwidth, power-sensitive roles where OPA350UAG4's 38 MHz and 0.0006% THD+N are unnecessary.
Availability
OPA350UAG4 is available at Aetrix Electronics and suitable for cell phone PA control loops, A/D converter driving, and video processing applications requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for OPA350UAG4 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 is a global semiconductor leader specializing in analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and consumer markets.
The OPA350 series belongs to TI's MicroAmplifier™ portfolio, designed specifically for high-speed, low-voltage, rail-to-rail signal conditioning in space-constrained, single-supply systems such as portable instrumentation and communications infrastructure.
FAQ
What is the maximum operating supply voltage for the OPA350UAG4?
The OPA350UAG4 supports a maximum supply voltage of 5.5 V across its V+ and V− pins. Absolute maximum rating is 7 V, but electrical specifications are guaranteed only from 2.7 V to 5.5 V. Operation above 5.5 V risks permanent damage and invalidates all published AC/DC parameters. Always observe the 5.5 V limit in production designs using OPA350UAG4.
Does the OPA350UAG4 require external compensation for unity-gain stability?
No, the OPA350UAG4 is internally compensated and unity-gain stable. It drives capacitive loads up to 100 pF in G = 1 configuration without oscillation or peaking, as verified in Figure 21 of the SBOS099D datasheet. External compensation is unnecessary unless driving >100 pF or operating in non-inverting G < 1 configurations, which are not recommended for OPA350UAG4.
Can the OPA350UAG4 drive a 75-Ω video load directly?
Yes, the OPA350UAG4 is characterized for 75-Ω video drive with 0.17% differential gain and 0.17° differential phase error at NTSC frequencies, meeting broadcast linearity standards. It delivers stable 1.4 VPP output into 75 Ω with <0.0006% THD+N at 1 kHz. For sustained 75-Ω operation, ensure thermal design accounts for ~120 mW dissipation at 5 V supply.
What is the input common-mode voltage range of the OPA350UAG4?
The OPA350UAG4 input common-mode voltage range extends from −0.1 V to (V+) + 0.1 V, verified over −40°C to 85°C. This rail-to-rail capability allows direct interface with sensors, DACs, or other ICs whose outputs swing near ground or V+. Note that PSRR and CMRR degrade within the ±400-mV internal transition region near (V+) – 1.8 V, so avoid biasing inputs there for precision DC applications.
Is the OPA350UAG4 pin-compatible with other members of the OPAx350 family?
No-OPA350UAG4 (single, SOIC-8) is not pin-compatible with OPA2350 (dual) or OPA4350 (quad), which use different pinouts and package counts. However, all OPAx350 variants share identical electrical specifications and thermal characteristics per channel. Board redesign is required to substitute channel count; only OPA350-series singles (e.g., OPA350UA, OPA350DGK) are mechanically and electrically interchangeable with OPA350UAG4.
OPA350UAG4 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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 22V/µs
- Gain Bandwidth Product:
- 38 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 150 µV
- 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:
- 8-SOIC
OPA350UAG4 FAQ
1.How can I place an order for OPA350UAG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA350UAG4 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 OPA350UAG4 reliable?
The price and inventory of OPA350UAG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA350UAG4 is usually 5 days.
3.What payment methods are accepted for OPA350UAG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA350UAG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA350UAG4?
OPA350UAG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA350UAG4 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 OPA350UAG4?
For technical support, including OPA350UAG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA350UAG4 requirements.
6.How does Aetrix verify that OPA350UAG4 is sourced from the original manufacturer or authorized distributors?
All OPA350UAG4 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 OPA350UAG4 meets industry standards.
7.What is the process for return or replacement of OPA350UAG4?
All OPA350UAG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA350UAG4, 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 OPA350UAG4 part is unused and in its original packaging.
Return procedure for OPA350UAG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA350UAG4 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…
