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Texas Instruments OPA2342EA/250G4
- Part No.:
- OPA2342EA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2342EA/250G4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,927
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Product details
Overview
OPA2342EA/250G4 from Texas Instruments is a dual rail-to-rail input/output CMOS operational amplifier in an 8-pin VSSOP (MSOP-8) package, optimized for low-power, single-supply operation from 2.7V to 5.5V. It delivers 1MHz gain-bandwidth, 1V/µs slew rate, 150µA typical quiescent current per amplifier, and output swing within 1mV of rails under light load - enabling high dynamic range signal conditioning in space-constrained, battery-powered data acquisition and audio systems.
For engineers reviewing the OPA2342EA/250G4 datasheet, OPA2342EA/250G4 pinout, OPA2342EA/250G4 application, or OPA2342EA/250G4 equivalent, key selection criteria include rail-to-rail I/O performance at low supply voltage, <250µA max quiescent current per channel, dual-channel independence for low crosstalk, and compatibility with ADC driving and I/V conversion in miniature PCB layouts.
Technical Context
The OPA2342EA/250G4 employs a complementary differential input stage enabling rail-to-rail common-mode input range extending 300mV beyond both supply rails, with a defined transition region where PSRR and CMRR degrade. Its class AB rail-to-rail output stage supports 1mV output swing into 100kΩ loads and maintains ≥96dB open-loop gain up to 5kΩ loads.
It is unity-gain stable and specified over –40°C to +85°C, with input bias current ≤10pA, input offset voltage ±6mV max, and THD+N of 0.006% at 1kHz - making it suitable for precision, low-noise, low-distortion analog front-ends where supply headroom is limited.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - enables direct use with Li-ion, 3.3V, and 5V logic rails without level shifting. |
| Gain-Bandwidth Product | 1MHz - supports stable closed-loop gain up to ~100× at 10kHz for sensor amplification and anti-alias filtering. |
| Slew Rate | 1V/µs - sufficient for settling 2V steps in ≤5µs (0.1%), suitable for driving medium-speed SAR ADC inputs. |
| Quiescent Current (per amp) | 150µA typ / 250µA max - allows dual-amplifier operation below 500µA total, critical for always-on portable electronics. |
| Input Offset Voltage | ±6mV max - ensures <0.2% error in unity-gain buffer applications with 3V full-scale signals. |
| Output Swing (vs rail) | 1mV into 100kΩ - preserves >99.9% of available voltage range for maximum SNR in low-voltage systems. |
| THD + Noise | 0.006% at 1kHz - meets fidelity requirements for speech-band audio processing and precision instrumentation. |
Pinout & Package
VSSOP-8 (DGK) package: 8-pin ultra-thin shrink small-outline package, 3.0mm × 3.0mm footprint, 0.65mm pitch, 1.0mm max height - designed for high-density PCB layouts in handheld and IoT devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance node (10¹³Ω || 6pF) accepting rail-to-rail common-mode signals; requires external biasing in single-supply configurations. |
| 2 | Non-Inverting Input (Channel A) | Identical input structure to Pin 1; independent of Channel B inputs for true dual-channel isolation. |
| 3 | Output (Channel A) | Rail-to-rail output capable of sourcing/sinking ±15mA; swings within 1mV of V+ or V– with light loads. |
| 4 | V– (Ground or Negative Supply) | Power reference for both amplifiers; must be bypassed with 0.01µF ceramic capacitor near the pin. |
| 5 | V+ (Positive Supply) | Single-supply input (2.7V–5.5V); supplies both channels; requires local 0.01µF ceramic decoupling. |
| 6 | Non-Inverting Input (Channel B) | Electrically isolated from Channel A; identical specs and rail-to-rail input capability. |
| 7 | Inverting Input (Channel B) | Independent high-Z input; no crosstalk coupling to Channel A per datasheet specification. |
| 8 | Output (Channel B) | Full rail-to-rail output drive; usable as independent second gain stage or differential driver pair with Channel A. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Common-mode range extends 300mV beyond V+ and V–, enabling direct interfacing with sensors and DACs operating at supply extremes. |
| Rail-to-rail output | Delivers 1mV output swing into 100kΩ, maximizing usable dynamic range in 3.3V or lower systems. |
| Low quiescent current | 150µA per amplifier typ allows dual-channel operation under 500µA - ideal for battery life-critical portable instruments. |
| Unity-gain stability | Stable with no external compensation, simplifying design for buffers, active filters, and ADC drivers. |
| Low THD+N | 0.006% at 1kHz ensures minimal harmonic distortion in audio preamplification and high-fidelity signal chains. |
| High CMRR & PSRR | ≥74dB CMRR and ≥250µV/V PSRR over temperature reduce sensitivity to supply noise and common-mode interference. |
Applications
| Audio Signal Conditioning | Data Acquisition Front-End |
|---|---|
|
Use Scenario: Electret microphone preamplification and bandpass filtering in voice-enabled IoT devices operating from 2.7V–5V. IC Role / Device Role / Timing Role: Dual-channel OPA2342EA/250G4 provides first-stage gain (G=100) and 300Hz–3kHz bandpass filtering before 12-bit ADC sampling. Use Value: Rail-to-rail I/O and 150µA/amp quiescent current enable full-swing signal capture with <500µA total system bias current. |
Use Scenario: Buffering and scaling sensor outputs (e.g., thermistor, strain gauge) into 12-bit SAR ADCs such as ADS7822. IC Role / Device Role / Timing Role: Single-supply rail-to-rail op amp drives ADC input capacitance while rejecting charge injection artifacts via RC filtering. Use Value: 1V/µs slew rate and 1MHz GBW ensure <5µs settling (0.1%) for accurate sampling at up to 100ksps. |
| Portable Instrumentation | Consumer Electronics Interface |
|
Use Scenario: Precision I/V conversion at DAC output in handheld test equipment requiring low power and compact layout. IC Role / Device Role / Timing Role: OPA2342EA/250G4 converts DAC current output to rail-aligned voltage with minimal offset drift (±3µV/°C). Use Value: ±6mV max input offset and 0.006% THD+N preserve DC accuracy and AC fidelity across temperature. |
Use Scenario: Active filtering and level-shifting in PCMCIA cards and USB audio adapters powered from 3.3V bus. IC Role / Device Role / Timing Role: Dual op amp implements 2nd-order low-pass filter and DC-bias adjustment for line-out signals. Use Value: VSSOP-8 footprint and 3.0mm × 3.0mm size fit tight card-edge constraints while maintaining rail-to-rail swing. |
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 quiescent current (1mA vs 250µA max), wider GBW (10MHz), same VSSOP-8 package. | Better for higher-speed filtering but unsuitable for sub-1mA battery operation. | Select when bandwidth >1MHz is required and power budget allows ≥2× higher IQ. |
| TLV2462IDR | Lower GBW (6.4MHz), higher IQ (550µA max), same rail-to-rail I/O and SO-8/VSSOP-8 options. | Compatible pinout in SO-8; VSSOP-8 variant requires layout verification. | Choose for cost-sensitive industrial designs where 550µA IQ is acceptable and 6.4MHz GBW suffices. |
Compared with MCP6022-I/SN and TLV2462IDR, the OPA2342EA/250G4 uniquely balances ultra-low power (≤250µA/amp), 1MHz bandwidth, and guaranteed rail-to-rail performance in VSSOP-8 - making it optimal for miniaturized, battery-operated signal chains where efficiency and space are co-constrained.
Availability
OPA2342EA/250G4 is available at Aetrix Electronics and suitable for portable instrumentation, voice-enabled IoT devices, and low-power data acquisition systems requiring stable component supply with RoHS-compliant, green packaging and traceable lot control.
Supply support for OPA2342EA/250G4 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 decades of expertise in precision op amps, data converters, and low-power signal chain ICs.
The OPA2342EA/250G4 belongs to TI's MicroAmplifier™ series - engineered specifically for miniature, low-cost, low-power applications demanding rail-to-rail operation on single supplies as low as 2.5V.
FAQ
What is the maximum operating supply voltage for the OPA2342EA/250G4?
The OPA2342EA/250G4 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 shift or reliability risk; for long-term stability, stay within 2.7V–5.5V as validated in the SBOS106A datasheet. The OPA2342EA/250G4 is not rated for 12V or dual-supply ±5V operation.
Does the OPA2342EA/250G4 support true rail-to-rail input and output simultaneously?
Yes - the OPA2342EA/250G4 supports rail-to-rail input common-mode range (–0.3V to V+ + 0.3V) and rail-to-rail output swing (within 1mV of either rail into 100kΩ). However, performance parameters like CMRR and PSRR degrade in the input transition region (~1.2V–1.8V below V+), so optimal linearity is achieved when input stays outside that zone. The OPA2342EA/250G4 delivers verified simultaneous rail-to-rail I/O in standard unity-gain buffer configurations.
What is the thermal resistance (θJA) of the OPA2342EA/250G4 in its VSSOP-8 package?
The OPA2342EA/250G4 in the DGK (VSSOP-8) package has a junction-to-ambient thermal resistance (θJA) of 150°C/W, as specified in the SBOS106A datasheet. This value assumes standard JEDEC 2-layer board conditions; actual θJA improves with added copper pour and thermal vias. At 250µA per amplifier (500µA total), power dissipation remains <2.8mW at 5.5V, keeping junction temperature rise negligible in most ambient conditions.
Can the OPA2342EA/250G4 drive capacitive loads directly?
The OPA2342EA/250G4 can directly drive up to 250pF of pure capacitive load in unity-gain configuration without oscillation, per the SBOS106A datasheet. For larger loads or inverting configurations, stability is improved by adding a 10Ω–20Ω series resistor at the output. This technique preserves DC accuracy while suppressing ringing - confirmed in Figure 5 and "Capacitive Load and Stability" section. The OPA2342EA/250G4 does not require external compensation networks for standard loads.
Is the OPA2342EA/250G4 pin-compatible with other dual op amps in MSOP-8?
The OPA2342EA/250G4 uses TI's standard dual op amp pinout for VSSOP-8 (DGK): Pins 1/2/3 = ChA in-/in+/out, Pins 4/5 = V–/V+, Pins 6/7/8 = ChB in+/in–/out. It matches the pinout of TLV2462, MCP6022, and LMV722 in VSSOP-8 - but functional equivalence (e.g., bandwidth, IQ) must be verified per application. The OPA2342EA/250G4 is not pin-compatible with SO-8 variants due to different pin 1 location and package dimensions.
OPA2342EA/250G4 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:
- Discontinued at Digi-Key
- 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/250G4 FAQ
1.How can I place an order for OPA2342EA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2342EA/250G4 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/250G4 reliable?
The price and inventory of OPA2342EA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2342EA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA2342EA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2342EA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2342EA/250G4?
OPA2342EA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2342EA/250G4 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/250G4?
For technical support, including OPA2342EA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2342EA/250G4 requirements.
6.How does Aetrix verify that OPA2342EA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA2342EA/250G4 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/250G4 meets industry standards.
7.What is the process for return or replacement of OPA2342EA/250G4?
All OPA2342EA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2342EA/250G4, 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/250G4 part is unused and in its original packaging.
Return procedure for OPA2342EA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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