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Texas Instruments OPA2342EA/250
- Part No.:
- OPA2342EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2342EA/250.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:791
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Product details
Overview
OPA2342EA/250 from Texas Instruments is a dual rail-to-rail input/output CMOS operational amplifier optimized for low-cost, low-power, miniature applications. It operates from 2.7V to 5.5V single supply, delivers 1MHz bandwidth and 1V/µs slew rate, draws only 150µA typical quiescent current per amplifier, and achieves output swing within 1mV of rails under light load-ideal for driving sampling ADCs in portable data acquisition systems.
For engineers reviewing the OPA2342EA/250 datasheet, OPA2342EA/250 pinout, OPA2342EA/250 application, or OPA2342EA/250 equivalent, key selection criteria include rail-to-rail I/O capability at sub-250µA quiescent current, 1mV output swing specification, MSOP-8 thermal resistance (150°C/W), and verified performance in audio processing and active filter topologies with THD+N = 0.006% at 1kHz.
Technical Context
The OPA2342EA/250 employs a complementary differential input stage enabling rail-to-rail common-mode input range extending 300mV beyond both supply rails. Its class AB output stage supports rail-to-rail output swing down to 1mV from rails into 100kΩ loads while maintaining ≥104dB open-loop gain.
Designed for unity-gain stability, it drives up to 250pF capacitive loads directly and supports fast settling (5µs to 0.1%) with minimal overshoot. Channel separation exceeds 132dB at DC and remains >100dB up to 100kHz, ensuring minimal crosstalk in dual-channel signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into 3.3V and 5V systems without level-shifting |
| Quiescent Current (per amp) | 150µA typ - allows battery-powered operation for >1 year in µA-budget designs |
| Gain-Bandwidth Product | 1MHz - supports stable closed-loop gain up to 100× at 10kHz with adequate phase margin |
| Slew Rate | 1V/µs - ensures faithful reproduction of 159kHz full-scale sine waves without distortion |
| Input Offset Voltage | ±1mV max (typ) - minimizes DC error in precision I/V conversion and sensor front-ends |
| THD + Noise | 0.006% at 1kHz - meets high-fidelity audio and measurement-grade signal chain requirements |
| Output Swing (vs rail) | 1mV into 100kΩ - preserves >99.9% of dynamic range in 3.3V single-supply systems |
Pinout & Package
OPA2342EA/250 is packaged in an 8-pin VSSOP (MSOP-8) package with 150°C/W junction-to-ambient thermal resistance, optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | Differential node for negative feedback path; accepts rail-to-rail common-mode voltage |
| 2 | Non-Inverting Input (Channel A) | Reference input for Channel A; supports input down to –0.3V below V– |
| 3 | Output (Channel A) | Rail-to-rail output capable of sourcing/sinking ±15mA; swings within 1mV of rails into 100kΩ |
| 4 | V– (Ground/–VS) | Power return for both amplifiers; must be low-impedance for PSRR integrity |
| 5 | V+ (+VS) | Positive supply rail; requires local 0.01µF ceramic bypass to ground |
| 6 | Non-Inverting Input (Channel B) | Independent reference input for Channel B; identical specs and biasing to Pin 2 |
| 7 | Inverting Input (Channel B) | Independent differential node for Channel B feedback; fully isolated from Channel A |
| 8 | Output (Channel B) | Second rail-to-rail output; channel separation >132dB prevents signal coupling in dual-path designs |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Extends 300mV beyond both supply rails, enabling direct interfacing with 0–VS sensors and DACs |
| Rail-to-rail output swing | Within 1mV of rails into 100kΩ, maximizing usable dynamic range in low-voltage systems |
| Ultra-low quiescent current | 150µA per amplifier enables multi-channel signal conditioning in battery-powered IoT nodes |
| Unity-gain stable | Eliminates need for external compensation, simplifying design of buffers and gain stages |
| High channel separation | 132dB at DC ensures independent operation of dual channels in stereo or differential signal paths |
Applications
| Audio Processing | Data Acquisition |
|---|---|
Use Scenario: Amplifying electret microphone signals in portable voice recorders with 3.3V supply. IC Role / Device Role / Timing Role: Dual-channel op amp providing 100× gain and bandpass filtering (300Hz–3kHz) before ADC sampling. Use Value: 0.006% THD+N preserves speech fidelity; 150µA per channel extends battery life beyond 12 months. | Use Scenario: Buffering and scaling analog sensor outputs (e.g., temperature, pressure) for 12-bit ADC input. IC Role / Device Role / Timing Role: Rail-to-rail I/O amplifier driving ADS7822 sampling ADC input capacitance and rejecting charge injection. Use Value: 1mV output swing maximizes resolution utilization; 5µs 0.1% settling ensures accurate sampling at 100ksps. |
| Active Filters | Process Control |
Use Scenario: Implementing 2nd-order Sallen-Key low-pass filter in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Dual op amp configured as unity-gain buffer and filter integrator with precise pole placement. Use Value: 1MHz GBW supports cutoff frequencies up to 100kHz; rail-to-rail I/O avoids clipping on ±2.5V signal excursions. | Use Scenario: Isolating and amplifying 4–20mA loop receiver outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Precision I/V converter and level shifter translating current-loop signals to 0–5V for microcontroller ADC. Use Value: ±1mV offset voltage minimizes zero-point error; 88dB CMRR rejects common-mode noise on long field wiring. |
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 |
|---|---|---|---|
| MCP6022-I/SN | Higher 10MHz GBW but 1mA IQ; SO-8 only; no MSOP-8 option | Better for higher-frequency active filters; less suitable for ultra-low-power battery operation | Select when bandwidth >1MHz required and power budget allows 6.7× higher IQ |
| AD8602ARMZ | Lower 0.25mV VOS max but 240µA IQ; same MSOP-8 footprint; 8MHz GBW | Preferred for precision sensor front-ends where offset dominates error budget | Select when offset voltage <0.5mV is mandatory and 1.6× higher IQ is acceptable |
Compared with MCP6022-I/SN and AD8602ARMZ, the OPA2342EA/250 uniquely balances 1MHz bandwidth, 150µA quiescent current, and MSOP-8 packaging-making it optimal for cost-sensitive, space-constrained, battery-powered data acquisition where 0.006% THD+N and 1mV rail swing are critical.
Availability
OPA2342EA/250 is available at Aetrix Electronics and suitable for portable audio devices, industrial data loggers, medical sensor interfaces, and consumer electronics requiring stable component supply across extended production lifecycles.
Supply support for OPA2342EA/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 delivering analog and embedded processing solutions with over 50 years of innovation in precision amplifiers and signal chain components.
The OPA2342EA/250 belongs to TI's MicroAmplifier™ series, designed specifically for low-cost, low-power, miniature applications including portable instrumentation, battery-powered sensors, and space-constrained consumer electronics.
FAQ
What is the maximum operating supply voltage for the OPA2342EA/250?
The OPA2342EA/250 has an absolute maximum supply voltage of 7.5V between V+ and V–, but its specified operating range is 2.7V to 5.5V. Operation outside this range may cause parametric degradation or permanent damage. The device is optimized for stable performance at 3.3V and 5V nominal supplies, with guaranteed specs over –40°C to +85°C ambient.
Does the OPA2342EA/250 support true rail-to-rail input and output simultaneously?
Yes, the OPA2342EA/250 supports rail-to-rail input common-mode range extending 300mV beyond both supply rails and rail-to-rail output swing within 1mV of the rails into 100kΩ loads. This simultaneous capability enables full-scale signal handling in single-supply systems without level-shifting circuitry, preserving dynamic range in applications like microphone preamplifiers and sensor interfaces.
What is the thermal resistance (θJA) of the OPA2342EA/250 in its MSOP-8 package?
The OPA2342EA/250 in the VSSOP (MSOP-8) package has a junction-to-ambient thermal resistance (θJA) of 150°C/W, as specified in the TI SBOS106A datasheet. This value assumes standard JEDEC 2-layer board conditions. Proper PCB layout with thermal vias and copper pour can improve actual thermal performance in high-ambient environments.
Can the OPA2342EA/250 drive capacitive loads without external compensation?
Yes, the OPA2342EA/250 is unity-gain stable and can directly drive up to 250pF of pure capacitive load in unity-gain configuration. For larger capacitive loads or improved phase margin, a small series resistor (10Ω–20Ω) between the output and load is recommended. This maintains DC accuracy while suppressing ringing, as validated in TI's typical performance curves.
What is the channel separation specification for the OPA2342EA/250, and why does it matter?
The OPA2342EA/250 provides ≥132dB channel separation at DC, decreasing to >100dB at 100kHz. This high isolation ensures that signals on Channel A do not couple into Channel B through internal substrate or power rails-critical in stereo audio, differential sensor pairs, and dual-path data acquisition where crosstalk would corrupt measurement integrity or audio imaging.
OPA2342EA/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:
- 1V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 150µA (x2 Channels)
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 2.7 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
OPA2342EA/250 FAQ
1.How can I place an order for OPA2342EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2342EA/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 OPA2342EA/250 reliable?
The price and inventory of OPA2342EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2342EA/250 is usually 5 days.
3.What payment methods are accepted for OPA2342EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2342EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2342EA/250?
OPA2342EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2342EA/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 OPA2342EA/250?
For technical support, including OPA2342EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2342EA/250 requirements.
6.How does Aetrix verify that OPA2342EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA2342EA/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 OPA2342EA/250 meets industry standards.
7.What is the process for return or replacement of OPA2342EA/250?
All OPA2342EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2342EA/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 OPA2342EA/250 part is unused and in its original packaging.
Return procedure for OPA2342EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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