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Texas Instruments OPA2343EA/250
- Part No.:
- OPA2343EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2343EA/250.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,932
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Product details
Overview
OPA2343EA/250 from Texas Instruments 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 5.5MHz gain-bandwidth, 6V/µs slew rate, and 850µA per amplifier quiescent current, enabling high-fidelity signal conditioning in space-constrained data acquisition and A/D driver circuits.
For engineers reviewing the OPA2343EA/250 datasheet, OPA2343EA/250 pinout, OPA2343EA/250 application, or OPA2343EA/250 equivalent, key selection criteria include rail-to-rail swing with ≤5mV from rails (RL = 100kΩ), input common-mode range extending 500mV beyond supplies, and guaranteed −40°C to +85°C operation in MSOP-8 packaging.
Technical Context
The OPA2343EA/250 employs a complementary CMOS input stage-parallel N-channel and P-channel differential pairs-to achieve rail-to-rail input operation across −0.3V to (V+) + 0.3V. Its class AB output stage enables rail-to-rail output swing, delivering <5mV from supply rails under light load (100kΩ) and maintaining ≥100dB open-loop gain at 10kΩ load.
It is unity-gain stable and specified for capacitive loads up to 1000pF in G = 1 configuration. Channel separation exceeds 100dB at 1kHz, and independent dual-amplifier circuitry minimizes crosstalk in mixed-signal systems requiring simultaneous analog signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5.5MHz - supports stable closed-loop operation up to ~500kHz at G = 11 without phase margin degradation. |
| Slew Rate | 6V/µs - enables accurate reproduction of 1MHz, 10Vpp signals with <0.1% distortion. |
| Input Offset Voltage | ±2mV (typ) - ensures ≤20mV full-scale error in 12-bit ADC driver applications with 5V reference. |
| Quiescent Current | 0.85mA per amplifier - allows dual-channel operation from coin-cell or USB-powered systems with minimal thermal impact. |
| Input Common-Mode Range | −0.3V to (V+) + 0.3V - accepts ground-referenced or rail-swinging inputs without external level-shifting. |
| Output Voltage Swing | Within 1–5mV of V+ and V− (RL = 100kΩ) - maximizes dynamic range in 3.3V or 5V single-supply systems. |
| Total Harmonic Distortion + Noise | 0.0007% at 1kHz - meets audio-grade fidelity requirements for line-level preamplification and active filtering. |
Pinout & Package
VSSOP-8 (DGK) package: 3mm × 3mm, 0.65mm pitch, thermally enhanced exposed pad (not electrically connected), moisture sensitivity level 2 (260°C, 1 year).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance node (10¹³ Ω || 6pF) accepting differential input signals referenced to local ground or mid-supply. |
| 2 | Non-Inverting Input (Channel A) | Accepts input common-mode voltage from −0.3V to (V+) + 0.3V; enables true rail-to-rail input operation. |
| 3 | Output (Channel A) | Class AB output capable of sourcing/sinking ±50mA; swings within 1mV of rails into 100kΩ load. |
| 4 | Ground / Negative Supply (V−) | Reference return path for both amplifiers; must be low-impedance to minimize PSRR degradation. |
| 5 | Positive Supply (V+) | Single-supply input range: 2.5V to 5.5V; bypass with 0.01µF ceramic capacitor near pin for stability. |
| 6 | Non-Inverting Input (Channel B) | Independent input for second amplifier; identical specs and bias current (<10pA typ) as Channel A. |
| 7 | Inverting Input (Channel B) | Matches Channel A performance; no interaction between channels due to fully isolated internal circuitry. |
| 8 | Output (Channel B) | Provides second independent output; channel separation >100dB at 1kHz ensures minimal inter-channel coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 3.3V/5V ADCs and DACs without level-shifting, preserving full signal swing. |
| 5.5MHz bandwidth at unity gain | Supports settling of 12-bit steps in <1µs (0.1%) with 100pF load, critical for multiplexed data acquisition. |
| 850µA per amplifier quiescent current | Allows dual-channel precision amplification in battery-powered portable instruments with >100-hour runtime. |
| 0.0007% THD+N at 1kHz | Meets Class D audio preamp and communication baseband filter requirements without post-processing correction. |
| MSOP-8 micro-size package | Reduces PCB area by 60% vs SO-8; compatible with automated SMT assembly and high-density layout constraints. |
Applications
| Driving Sampling A/D Converters | PCMCIA Card Signal Conditioning |
|---|---|
Use Scenario: Buffering and gain-setting for 12-bit, 100kHz sampling ADS7816 ADC in handheld test equipment. IC Role / Device Role / Timing Role: Dual-channel OPA2343EA/250 provides non-inverting gain stage and anti-aliasing filter interface, driving ADC input capacitance while rejecting charge injection. Use Value: Rail-to-rail output swing ensures full 0–5V ADC input range utilization; 6V/µs slew rate prevents step-response overshoot during fast sample-and-hold transitions. |
Use Scenario: Low-power analog front-end in PCMCIA audio I/O card supporting microphone preamp and line-out stages. IC Role / Device Role / Timing Role: One amplifier configures as microphone preamp (G = 100), the other as line-output buffer (G = 1), sharing single 3.3V supply. Use Value: 850µA per channel enables dual-path operation from limited PCMCIA power budget; rail-to-rail input accepts mic bias voltage without attenuation. |
| Active Bandpass Filtering | Industrial Sensor Signal Amplification |
Use Scenario: Speech-band (160Hz–2.4kHz) bandpass filter in voice-recognition module using OPA2343EA/250 in dual op-amp topology. IC Role / Device Role / Timing Role: First amplifier implements high-pass section, second implements low-pass section, cascaded for precise frequency selectivity. Use Value: 5.5MHz GBW ensures filter Q-factor remains stable across temperature; low THD+N preserves speech intelligibility metrics. |
Use Scenario: Amplifying low-level bridge sensor outputs (e.g., pressure transducer) in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Configured as precision instrumentation amplifier front-end (with external resistors), rejecting common-mode noise on long sensor cables. Use Value: Input offset drift ≤3µV/°C minimizes calibration drift over −40°C to +85°C operating range; high CMRR (>74dB) suppresses 50/60Hz interference. |
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 |
|---|---|---|---|
| OPA2343UA | SO-8 package (larger footprint, 150°C/W θJA vs 150°C/W for MSOP-8); identical electrical specs and marking "OPA2343UA". | Preferred for prototyping or through-hole-compatible reflow; less suitable for ultra-dense PCBs where MSOP-8 size advantage matters. | Select OPA2343UA when board layout allows SO-8 or when legacy SOIC tooling is in use; same pinout but different package dimensions. |
| MCP6022-I/SN | Lower bandwidth (10MHz), higher quiescent current (1mA), wider offset voltage range (±3mV max), Microchip-manufactured. | Valid for general-purpose dual op-amp use but not optimized for ultra-low-noise A/D driving or battery-critical designs. | Choose MCP6022-I/SN only if cost is primary constraint and 5.5MHz GBW or 0.0007% THD+N are not required; verify PSRR/CMRR match for target supply rejection needs. |
Compared with OPA2343UA and MCP6022-I/SN, the OPA2343EA/250 uniquely combines MSOP-8 miniaturization, 5.5MHz bandwidth, and sub-0.001% THD+N in a single device-making it optimal for space- and fidelity-constrained data acquisition front-ends where thermal management and signal integrity are co-prioritized.
Availability
OPA2343EA/250 is available at Aetrix Electronics and suitable for data acquisition systems, portable instrumentation, and PCMCIA audio interfaces requiring stable component supply, RoHS-compliant green packaging, and guaranteed −40°C to +85°C operation.
Supply support for OPA2343EA/250 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 precision op-amps and signal chain solutions.
The OPA2343EA/250 belongs to TI's microAmplifier™ series, designed specifically for miniature, low-voltage, rail-to-rail applications including A/D converter driving, portable audio, and sensor signal conditioning.
FAQ
What supply voltage range is supported by the OPA2343EA/250?
The OPA2343EA/250 operates from a single supply of 2.5V to 5.5V, with full specifications guaranteed from 2.7V to 5.5V over −40°C to +85°C. This allows direct compatibility with 3.3V and 5V system rails, and enables operation from Li-ion batteries (fully charged at ~4.2V) without regulation. The OPA2343EA/250 maintains rail-to-rail input/output performance across this entire range.
Does the OPA2343EA/250 require external compensation for unity-gain stability?
No, the OPA2343EA/250 is internally compensated and unity-gain stable. It drives capacitive loads up to 1000pF in G = 1 configuration without oscillation. For heavier loads or improved phase margin, a 10Ω–20Ω series resistor between output and load is recommended-though this introduces minor DC error (e.g., ~0.2% with 10kΩ load). The OPA2343EA/250 does not require external capacitors or feedback networks to ensure stability at minimum gain.
How does the rail-to-rail input stage of the OPA2343EA/250 function across the full supply range?
The OPA2343EA/250 uses parallel N-channel and P-channel input differential pairs, enabling continuous operation from −0.3V to (V+) + 0.3V. Within a ~400mV transition region near (V+) − 1.3V, both pairs conduct-causing slight degradation in PSRR, CMRR, and THD. Outside this region, performance matches datasheet minima. The OPA2343EA/250's input bias current remains <10pA across the full common-mode range, ensuring high-impedance source compatibility.
What is the thermal performance of the OPA2343EA/250 in its MSOP-8 package?
The OPA2343EA/250 in VSSOP-8 (DGK) package has a junction-to-ambient thermal resistance (θJA) of 150°C/W. At maximum quiescent current (1.25mA per amplifier × 2 = 2.5mA) and 5V supply, total power dissipation is ~12.5mW, resulting in <2°C junction-to-ambient rise above ambient-well within safe limits. No heatsinking is required for typical operation, even in sealed enclosures up to +85°C ambient.
Can the OPA2343EA/250 drive a 600Ω load effectively?
Yes-the OPA2343EA/250's class AB output stage is explicitly rated to drive 600Ω loads connected anywhere between V+ and ground. Output swing degrades to ~4.8Vpp (from 5V rail) into 600Ω at 1kHz, with THD+N remaining below 0.01%. For sustained 600Ω loading, ensure PCB layout minimizes trace inductance and use local 0.01µF bypassing; the OPA2343EA/250 delivers ±50mA short-circuit current, confirming robust drive capability.
OPA2343EA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 6V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 850µA (x2 Channels)
- Current - Output / Channel:
- 50 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-VSSOP
OPA2343EA/250 FAQ
1.How can I place an order for OPA2343EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2343EA/250 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 OPA2343EA/250 reliable?
The price and inventory of OPA2343EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2343EA/250 is usually 5 days.
3.What payment methods are accepted for OPA2343EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2343EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2343EA/250?
OPA2343EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2343EA/250 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 OPA2343EA/250?
For technical support, including OPA2343EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2343EA/250 requirements.
6.How does Aetrix verify that OPA2343EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA2343EA/250 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 OPA2343EA/250 meets industry standards.
7.What is the process for return or replacement of OPA2343EA/250?
All OPA2343EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2343EA/250, 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 OPA2343EA/250 part is unused and in its original packaging.
Return procedure for OPA2343EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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