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Texas Instruments OPA357AIDDAR
- Part No.:
- OPA357AIDDAR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA357AIDDAR.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT 8SOPWRPAD
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
OPA357AIDDAR from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for high-speed video and precision analog signal conditioning. It delivers 250-MHz small-signal bandwidth, 150 V/µs slew rate, and 6.5 nV/√Hz input voltage noise - enabling clean amplification of fast video signals, photodiode transimpedance outputs, and ADC/DAC interface buffers in 2.5–5.5-V systems.
For engineers reviewing the OPA357AIDDAR datasheet, OPA357AIDDAR pinout, OPA357AIDDAR application, or OPA357AIDDAR equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options - all grounded in TI's SBOS235F production datasheet (April 2018 revision).
Technical Context
The OPA357AIDDAR uses a complementary CMOS input stage with parallel N- and P-channel differential pairs to achieve rail-to-rail input operation extending 100 mV beyond supply rails. Its class AB output stage supports ±100 mA continuous drive while maintaining 100-mV rail-to-rail swing at 1-kΩ load.
Integrated thermal shutdown activates at 160°C junction temperature and resets at 140°C. The enable pin implements a Schmitt-trigger input with 100 ns turn-on and 30 ns turn-off timing, reducing quiescent current from 4.9 mA to 3.4 µA per channel when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 250 MHz - enables stable +1-V/V video line drivers and wideband active filters without phase margin compromise. |
| Slew Rate | 150 V/µs - supports distortion-free reproduction of 40-MHz 0.1-dB flat video signals with 2-VPP swing. |
| Input Voltage Noise | 6.5 nV/√Hz at 1 MHz - preserves SNR in low-level photodiode transimpedance and ultrasound receive chains. |
| Rail-to-Rail I/O | Input common-mode range extends (V−) −0.1 V to (V+) +0.1 V; output swings within 100 mV of rails - maximizes dynamic range in single-supply 3.3-V or 5-V systems. |
| Shutdown Current | < 6 µA - reduces average power in battery-operated barcode scanners or portable medical imaging devices during idle cycles. |
| Differential Gain/Phase | 0.02% / 0.09° @ NTSC - meets broadcast-grade video fidelity requirements for RGB cable drivers and composite video amplifiers. |
| Supply Range | 2.5 V to 5.5 V - compatible with Li-ion, USB-powered, and industrial 3.3-V/5-V rails without level-shifting. |
Pinout & Package
SOT-23-6 package (2.90 mm × 1.60 mm body), surface-mount, thermally enhanced with exposed pad (DBV variant). Designed for high-density PCB layouts in space-constrained video modules and portable instrumentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: Out | Amplifier output | Class AB rail-to-rail output capable of ±100 mA continuous drive; high-impedance when Enable = low. |
| 2: V− | Negative supply | Ground reference for single-supply operation; accepts 0 V (GND) or negative rail down to −5.5 V in dual-supply mode. |
| 3: +In | Noninverting input | CMOS input with 3 pA bias current; supports DC-coupled sensor interfaces and precision buffer configurations. |
| 4: −In | Inverting input | High-impedance node for feedback networks; used in transimpedance, active filter, and gain-setting topologies. |
| 5: Enable | Power-down control | CMOS-compatible Schmitt-trigger input; drives amplifier into ultra-low-IQ state (<6 µA) with 100 ns wake-up latency. |
| 6: V+ | Positive supply | Accepts 2.5–5.5 V; internal regulation ensures stable biasing across full operating temperature range (−40°C to +125°C). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Extends common-mode range 100 mV beyond supplies using parallel N/P-channel input pairs - eliminates external level-shifting in single-supply video front-ends. |
| Thermal shutdown protection | Activates at 160°C junction temperature and auto-resets at 140°C - prevents permanent damage during sustained overload or poor heatsinking in compact enclosures. |
| Low-distortion video performance | 0.02% differential gain / 0.09° differential phase error at NTSC - meets SMPTE 253M and ITU-R BT.601 standards for broadcast-quality signal distribution. |
| Fast enable/disable timing | 100 ns turn-on / 30 ns turn-off - enables time-gated sampling, multiplexed output buses, and burst-mode operation in optical networking receivers. |
| High output current drive | ±100 mA continuous output - directly drives 75-Ω back-terminated video cables, laser diodes, and low-impedance ADC inputs without external buffers. |
Applications
| Video Processing | Photodiode Transimpedance Amplifiers |
|---|---|
Use Scenario: Driving 75-Ω coaxial cables in RGB or composite video signal distribution systems with minimal group delay. IC Role / Device Role / Timing Role: Single-supply video line driver with rail-to-rail output swing and 0.1-dB gain flatness to 40 MHz. Use Value: Eliminates AC-coupling capacitors and DC restoration circuits while preserving NTSC/PAL color fidelity (0.02% DG / 0.09° DP). |
Use Scenario: Converting low-current photocurrents (nA–µA) from high-speed photodiodes into robust voltage signals for digitization. IC Role / Device Role / Timing Role: Low-noise (6.5 nV/√Hz), high-bandwidth transimpedance amplifier with 250-MHz gain-bandwidth product. Use Value: Enables >100-MHz optical pulse detection in LIDAR and fiber-optic receivers without sacrificing SNR or introducing peaking. |
| Ultrasound Imaging Receivers | Analog-to-Digital Converter Input Buffers |
Use Scenario: Amplifying weak, wideband echo signals from piezoelectric transducers before digitization in portable ultrasound probes. IC Role / Device Role / Timing Role: Low-input-bias-current (3 pA), high-slew-rate (150 V/µs) buffer with rail-to-rail input for DC-coupled front-end gain stages. Use Value: Preserves signal integrity across 1–15 MHz bandwidth while minimizing baseline drift and thermal offset drift over probe temperature excursions. |
Use Scenario: Isolating and driving high-resolution SAR or pipeline ADCs with demanding input capacitance and settling requirements. IC Role / Device Role / Timing Role: Unity-gain stable buffer with 30 ns 0.1% settling time and 100-mV rail-to-rail output swing. Use Value: Ensures full-scale accuracy and monotonicity in 14–16-bit data acquisition by eliminating charge injection errors and maintaining THD < −75 dBc. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA354AIDDAR | No shutdown function; identical 250-MHz GBW, 150 V/µs slew rate, and SOT-23-6 package. | Preferred where always-on operation is required and board space precludes adding external enable logic. | Select OPA354AIDDAR if shutdown functionality is unnecessary and lowest possible input bias current (1 pA typ.) is critical. |
| OPA355AIDDAR | 200-MHz GBW, same rail-to-rail output but non-rail-to-rail input; 5.5 nV/√Hz noise; 3.4 mA IQ. | Better suited for lower-power, lower-bandwidth applications where 0.02% differential gain is not required. | Choose OPA355AIDDAR when optimizing for sub-5-mA quiescent current and 200-MHz bandwidth suffices for system requirements. |
Compared with OPA357AIDDAR, OPA354AIDDAR removes shutdown overhead for simpler biasing and lower noise floor, while OPA355AIDDAR trades 50 MHz bandwidth and rail-to-rail input for reduced power and cost - making each suitable for distinct trade-offs in video, medical, or test equipment designs.
Availability
OPA357AIDDAR is available at Aetrix Electronics and suitable for video processing, photodiode transimpedance amplification, and high-speed ADC/DAC interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OPA357AIDDAR 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 and embedded processing technologies, with decades of expertise in high-performance op amps and precision signal chain solutions.
The OPA357AIDDAR belongs to TI's OPAx357 family of high-speed CMOS op amps, engineered specifically for video, ultrasound, optical networking, and other applications demanding wide bandwidth, low noise, and rail-to-rail operation in compact packages.
FAQ
What is the maximum operating supply voltage for the OPA357AIDDAR?
The OPA357AIDDAR has an absolute maximum supply voltage of 7.5 V (V+ to V−), but its recommended operating range is 2.5 V to 5.5 V. Operating above 5.5 V risks exceeding safe junction temperatures and violates the specified electrical characteristics - TI explicitly warns that voltages higher than 7.5 V can cause permanent damage. For reliable 5-V system integration, the OPA357AIDDAR maintains full performance across −40°C to +125°C ambient.
Does the OPA357AIDDAR support true rail-to-rail input operation?
Yes - the OPA357AIDDAR's input common-mode voltage range extends from (V−) −0.1 V to (V+) +0.1 V, verified across the full −40°C to +125°C temperature range. This is achieved via a parallel N-channel/P-channel input stage, allowing direct DC coupling of sensors and signals near supply rails without external level-shifting circuitry. The OPA357AIDDAR datasheet confirms 100-mV beyond-rail operation in both directions under all specified conditions.
How does the Enable pin function on the OPA357AIDDAR?
The Enable pin on the OPA357AIDDAR is a CMOS Schmitt-trigger input referenced to V−. A logic-high voltage ≥2.0 V enables normal operation (IQ ≈ 4.9 mA); a logic-low voltage ≤0.8 V disables the amplifier, reducing quiescent current to <6 µA. The pin must be actively driven - leaving it floating is prohibited. Turn-on time is 100 ns and turn-off time is 30 ns, enabling precise gating in time-domain applications like pulsed laser drivers or multiplexed signal paths.
Can the OPA357AIDDAR drive a 75-Ω video cable directly?
Yes - the OPA357AIDDAR is explicitly characterized for 75-Ω back-terminated video loads in TI's SBOS235F datasheet. With proper layout and termination, it achieves 0.02% differential gain and 0.09° differential phase error at NTSC frequencies, meeting broadcast video standards. Its ±100 mA output drive capability and 100-mV rail-to-rail swing ensure full 2-VPP signal compliance on 5-V supplies without external buffering or AC-coupling components.
What is the thermal shutdown behavior of the OPA357AIDDAR?
The OPA357AIDDAR incorporates an internal thermal shutdown circuit that disables the amplifier when junction temperature reaches 160°C. Operation resumes automatically once the die cools to ≤140°C. This hysteresis prevents oscillation near the trip point. The shutdown threshold is process-trimmed and guaranteed across temperature - no external components or configuration are needed. Thermal resistance (RθJA) is 166.4°C/W for the SOT-23-6 (DBV) package, enabling accurate thermal modeling in compact PCB layouts.
OPA357AIDDAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 150V/µs
- Gain Bandwidth Product:
- 100 MHz
- -3db Bandwidth:
- 250 MHz
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 4.9mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
OPA357AIDDAR FAQ
1.How can I place an order for OPA357AIDDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA357AIDDAR 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 OPA357AIDDAR reliable?
The price and inventory of OPA357AIDDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA357AIDDAR is usually 5 days.
3.What payment methods are accepted for OPA357AIDDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA357AIDDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA357AIDDAR?
OPA357AIDDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA357AIDDAR 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 OPA357AIDDAR?
For technical support, including OPA357AIDDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA357AIDDAR requirements.
6.How does Aetrix verify that OPA357AIDDAR is sourced from the original manufacturer or authorized distributors?
All OPA357AIDDAR 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 OPA357AIDDAR meets industry standards.
7.What is the process for return or replacement of OPA357AIDDAR?
All OPA357AIDDAR units undergo pre-shipment inspection (PSI). If there is an issue with OPA357AIDDAR, 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 OPA357AIDDAR part is unused and in its original packaging.
Return procedure for OPA357AIDDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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