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Texas Instruments OPA2343EA/2K5
- Part No.:
- OPA2343EA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2343EA/2K5.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,796
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Product details
Overview
OPA2343EA/2K5 from Texas Instruments is a dual rail-to-rail input/output CMOS operational amplifier in an 8-pin VSSOP package, specified for –40°C to +85°C operation. It delivers 5.5MHz gain-bandwidth, 6V/µs slew rate, 850µA per channel quiescent current, and 0.0007% THD+N at 1kHz-optimized for driving A/D converters and low-voltage audio signal conditioning.
For engineers reviewing the OPA2343EA/2K5 datasheet, OPA2343EA/2K5 pinout, OPA2343EA/2K5 application, or OPA2343EA/2K5 equivalent, key selection criteria include single-supply operation down to 2.5V, rail-to-rail output swing within 1mV of rails (100kΩ load), input common-mode range extending 500mV beyond supply rails, and MSOP-8 thermal resistance of 150°C/W.
Technical Context
The OPA2343EA/2K5 uses a complementary CMOS input stage with 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 while maintaining high open-loop gain (>100dB) into 100kΩ loads.
It is unity-gain stable and features independent dual-amplifier circuitry to minimize crosstalk. The device operates from 2.5V to 5.5V supply, with guaranteed specifications over 2.7V–5.0V and full functionality maintained across –55°C to +125°C operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5.5MHz - supports stable closed-loop operation up to ~500kHz at G = 10 without phase margin degradation |
| Slew Rate | 6V/µs - enables clean 1µs settling to 0.1% for 2V step signals, critical for ADC driver fidelity |
| THD+N @ 1kHz | 0.0007% - ensures minimal harmonic distortion in audio and precision signal paths |
| Input Offset Voltage | ±2mV (typ), ±8mV (max) - maintains DC accuracy in sensor interfaces and I/V conversion |
| Quiescent Current | 0.85mA per channel - enables dual-channel amplification in battery-powered systems with <1.7mA total bias |
| Input Bias Current | ±0.2pA (typ) - preserves high-impedance source integrity in photodiode and piezoelectric transducer circuits |
| Output Swing (100kΩ) | Within 1mV of rails - maximizes dynamic range in 3.3V or 5V single-supply systems |
Pinout & Package
The OPA2343EA/2K5 is housed in an 8-pin VSSOP (DGK) package, measuring 3.0mm × 3.0mm × 1.0mm with 0.65mm pitch, optimized for space-constrained PCB layouts and offering θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Amplifier A output - drives external load directly; rail-to-rail swing supports full supply utilization |
| 2 | –In A | Inverting input A - high-impedance node (1013Ω || 6pF); accepts signals beyond rails by ±0.5V with current limiting |
| 3 | +In A | Non-inverting input A - same high-impedance and rail-overdrive capability as Pin 2 |
| 4 | V– | Negative supply - connects to ground or negative rail; input common-mode extends 500mV below this pin |
| 5 | V+ | Positive supply - accepts 2.5V–5.5V; bypassing with 0.01µF ceramic capacitor required for stability |
| 6 | +In B | Non-inverting input B - electrically isolated from Channel A; enables independent dual-channel signal processing |
| 7 | –In B | Inverting input B - identical specs and protection to Pin 2; no crosstalk with Channel A under dc or ac conditions |
| 8 | Out B | Amplifier B output - fully independent output stage; supports simultaneous dual-signal buffering without interaction |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input/output | Enables full-scale signal handling in 2.5V–5.5V single-supply systems, eliminating level-shifting circuitry |
| Low quiescent current | 850µA per channel allows dual op-amp integration in always-on sensor nodes and portable instrumentation |
| High-speed performance | 5.5MHz GBW and 6V/µs SR support accurate buffering of 100kHz sampling ADC inputs with minimal group delay |
| Ultra-low THD+N | 0.0007% at 1kHz ensures transparent audio amplification and high-fidelity data acquisition signal chains |
| Independent dual channels | Zero crosstalk design prevents inter-channel interference in stereo audio, differential sensor pairs, or multi-channel DAQ |
Applications
| Audio Line Driver | Data Acquisition Front-End |
|---|---|
Use Scenario: Driving line-level analog outputs from portable media players or microcontrollers into 600Ω or 10kΩ audio inputs. IC Role / Device Role / Timing Role: Dual-channel voltage buffer with rail-to-rail output swing and ultra-low THD+N to preserve signal fidelity. Use Value: Delivers >4.98Vp-p output from 5V supply with <0.0007% distortion, eliminating need for external level-shifting or gain stages. | Use Scenario: Conditioning sensor outputs (e.g., thermocouples, strain gauges) before feeding into 12-bit SAR ADCs like ADS7816. IC Role / Device Role / Timing Role: Precision dual op-amp providing gain, filtering, and charge injection isolation for sampling ADC inputs. Use Value: Settles to 0.1% in 1µs with 2V step, enabling reliable 100kHz sampling rates while maintaining DC accuracy via ±2mV offset. |
| PCMCIA Card Signal Chain | Active Filter Stage |
Use Scenario: Signal conditioning in legacy PCMCIA cards where board space and power are severely constrained. IC Role / Device Role / Timing Role: Dual rail-to-rail op-amp performing I/V conversion and anti-aliasing filtering in compact MSOP-8 footprint. Use Value: 3.0mm × 3.0mm VSSOP package saves >50% board area vs SO-8; 850µA/channel enables multi-function card operation from limited bus power. | Use Scenario: Implementing 2nd-order low-pass or bandpass filters in medical instrumentation or communications receivers. IC Role / Device Role / Timing Role: Dual op-amp configured as Sallen-Key or multiple-feedback topology with unity-gain stability. Use Value: 5.5MHz GBW supports filter cutoffs up to 1MHz with <1dB passband ripple; rail-to-rail output avoids clipping in AC-coupled designs. |
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 |
|---|---|---|---|
| OPA2343UA/2K5 | Same electrical specs but in SO-8 package (θJA = 150°C/W, larger 4.9mm × 6.0mm footprint) | Better thermal mass for higher ambient or sustained output current; less suitable for ultra-dense layouts | Select when PCB layout allows SO-8 and thermal dissipation >150mW is required |
| MCP6022-E/SN | Lower GBW (10MHz), higher quiescent current (1mA/ch), wider offset range (±3mV max), same VSSOP-8 package | Higher speed but increased power; less precise DC performance; compatible pinout for drop-in evaluation only | Select when bandwidth >5.5MHz is needed and ±3mV offset is acceptable in target application |
Compared with OPA2343UA/2K5, the OPA2343EA/2K5 offers identical performance in a 45% smaller footprint-critical for handheld devices-while MCP6022-E/SN trades DC precision and power efficiency for higher bandwidth, requiring revalidation of noise and settling behavior.
Availability
OPA2343EA/2K5 is available at Aetrix Electronics and suitable for data acquisition front-ends, portable audio line drivers, and PCMCIA card signal chains requiring stable component supply, RoHS-compliant packaging, and guaranteed -40°C to +85°C operation.
Supply support for OPA2343EA/2K5 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 delivering analog and embedded processing solutions, with deep expertise in precision amplifiers and signal chain ICs.
The OPA2343EA/2K5 belongs to TI's microAmplifier™ series, designed specifically for low-cost, miniature, single-supply applications demanding rail-to-rail operation, low power, and high-speed performance in space-constrained systems.
FAQ
What supply voltage range is supported by the OPA2343EA/2K5?
The OPA2343EA/2K5 operates from 2.5V to 5.5V, with full specifications guaranteed over 2.7V–5.0V. This wide range enables use in both 3.3V industrial systems and 5V legacy designs while maintaining rail-to-rail input/output functionality and 850µA per channel quiescent current across the entire span. The OPA2343EA/2K5 remains functional down to 2.5V, making it suitable for battery-powered applications with declining supply voltage.
Does the OPA2343EA/2K5 require external compensation for unity-gain stability?
No, the OPA2343EA/2K5 is internally compensated and unity-gain stable. It drives pure capacitive loads up to 1000pF in unity-gain configuration without oscillation. For loads exceeding this value-or when driving cables or long traces-a small series resistor (10Ω–20Ω) between the output and capacitive load improves phase margin without significantly affecting dc accuracy in most applications. The OPA2343EA/2K5 datasheet confirms unconditional stability under standard test conditions.
What is the maximum output current capability of the OPA2343EA/2K5?
The OPA2343EA/2K5 provides ±50mA short-circuit output current per channel, with continuous safe operation into resistive loads down to 2kΩ while maintaining rail-to-rail swing and >92dB open-loop gain. At room temperature and 5V supply, it delivers ±40mA into 2kΩ with <200mV voltage drop from rails. Output current is thermally limited; junction temperature must remain ≤150°C, and the VSSOP package's θJA = 150°C/W dictates derating above 70°C ambient.
How does the input common-mode voltage range of the OPA2343EA/2K5 compare to standard op-amps?
The OPA2343EA/2K5 supports an input common-mode voltage range from –0.3V to (V+) + 0.3V-extending 500mV beyond both supply rails-enabled by its complementary CMOS input stage. Standard op-amps typically limit input to within the supply rails or 1–2V inside them. This extended range allows direct interfacing with sensors or DACs whose outputs exceed the op-amp's supply, provided input current is limited to ≤10mA using series resistors, as specified in the OPA2343EA/2K5 absolute maximum ratings.
Is the OPA2343EA/2K5 pin-compatible with other members of the OPA343 family?
The OPA2343EA/2K5 shares the same 8-pin VSSOP pinout as the OPA2343UA (SO-8 version), but is not pin-compatible with the single-channel OPA343 or quad OPA4343 due to differing channel counts and pin assignments. Within the dual variants, all OPA2343x parts-including OPA2343EA/2K5-use identical pin functions: Pins 1/8 = Out A/B, 2/7 = –In A/B, 3/6 = +In A/B, 4 = V–, 5 = V+. This consistent mapping simplifies design reuse across temperature grades and packaging options.
OPA2343EA/2K5 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/2K5 FAQ
1.How can I place an order for OPA2343EA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2343EA/2K5 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/2K5 reliable?
The price and inventory of OPA2343EA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2343EA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA2343EA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2343EA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2343EA/2K5?
OPA2343EA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2343EA/2K5 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/2K5?
For technical support, including OPA2343EA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2343EA/2K5 requirements.
6.How does Aetrix verify that OPA2343EA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA2343EA/2K5 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/2K5 meets industry standards.
7.What is the process for return or replacement of OPA2343EA/2K5?
All OPA2343EA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2343EA/2K5, 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/2K5 part is unused and in its original packaging.
Return procedure for OPA2343EA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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