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Texas Instruments OPA2342EA/2K5
- Part No.:
- OPA2342EA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2342EA/2K5.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,825
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Product details
Overview
OPA2342EA/2K5 from Texas Instruments is a dual rail-to-rail input/output CMOS operational amplifier in MSOP-8 package, optimized for low-power (150 µA typ per amplifier), single-supply operation down to 2.5 V, with 1 MHz bandwidth and 1 V/µs slew rate. It delivers 1 mV output swing from rail into 100 kΩ and supports precision signal conditioning in space-constrained data acquisition and audio systems.
For engineers reviewing the OPA2342EA/2K5 datasheet, OPA2342EA/2K5 pinout, OPA2342EA/2K5 application, or OPA2342EA/2K5 equivalent, key selection criteria include rail-to-rail I/O capability at low quiescent current, verified channel separation (>132 dB at dc), THD+N of 0.006% at 1 kHz, and compatibility with 2.7–5.5 V supply rails in industrial temperature range (–40°C to +85°C).
Technical Context
The OPA2342EA/2K5 implements a complementary differential input stage enabling rail-to-rail common-mode input range extending 300 mV beyond both supply rails, with a defined transition region where PSRR and CMRR degrade. Its class AB output stage achieves 1 mV rail-to-rail swing under light loads while maintaining ≥96 dB open-loop gain (RL = 100 kΩ).
Designed for unity-gain stability, it drives up to 250 pF capacitive load directly and supports fast settling (5 µs to 0.1%)-critical for buffering sampling ADCs like ADS7822. Dual-channel independence ensures minimal crosstalk (<0.2 µV/V dc channel separation) and no interaction between amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - fully specified; functional operation supported from 2.5 V to 5.5 V |
| Quiescent Current (per amp) | 150 µA typ - enables battery-powered operation with sub-300 µA total for dual channel |
| Gain-Bandwidth Product | 1 MHz - supports stable unity-gain buffers and closed-loop gains up to ~10 at 100 kHz |
| Slew Rate | 1 V/µs - sufficient for 100 kHz full-power sine wave at 1 Vpp without distortion |
| THD + Noise | 0.006% at 1 kHz - meets high-fidelity audio and precision measurement requirements |
| Input Offset Voltage | ±1 mV max (typ ±6 mV) - enables accurate dc-coupled amplification with <10 µV/°C drift |
| Output Swing (from rail) | 1 mV into 100 kΩ - preserves >99.9% dynamic range in 3.3 V or 5 V single-supply systems |
Pinout & Package
OPA2342EA/2K5 is housed in an 8-pin MSOP (VSSOP) package (drawing DGK), 3.0 mm × 3.0 mm × 1.0 mm, RoHS-compliant with NiPdAu lead finish and MSL Level-2 moisture sensitivity rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Out A) | Amplifier A output | Class AB rail-to-rail driver capable of sourcing/sinking ±15 mA; swing within 1 mV of rails into 100 kΩ |
| 2 (–In A) | Inverting input A | Differential node with 10¹³ Ω || 6 pF common-mode impedance; accepts signals from –0.3 V to (V+) + 0.3 V |
| 3 (+In A) | Non-inverting input A | Differential node matched to Pin 2; supports biasing anywhere in rail-to-rail common-mode range |
| 4 (V–) | Negative supply / ground reference | Power return for both amplifiers; must be decoupled with 0.01 µF ceramic capacitor near pin |
| 5 (V+) | Positive supply | Accepts 2.7–5.5 V; internal ESD clamps limit input overvoltage to ±0.5 V beyond rails |
| 6 (+In B) | Non-inverting input B | Independent input for second amplifier; identical specs and bias current (<10 pA) as Channel A |
| 7 (–In B) | Inverting input B | Fully isolated from Channel A; dc channel separation 0.2 µV/V ensures no crosstalk in dual-sensor systems |
| 8 (Out B) | Amplifier B output | Electrically identical to Pin 1; supports independent gain stages or differential output configurations |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Common-mode range extends 300 mV beyond both supply rails using parallel N- and P-channel input pairs |
| Rail-to-rail output stage | Class AB topology delivers 1 mV output swing from rail into 100 kΩ, preserving signal headroom in low-voltage systems |
| Ultra-low quiescent current | 150 µA per amplifier enables dual-channel operation below 300 µA - ideal for always-on sensor interfaces |
| Unity-gain stable | No external compensation required; drives 250 pF capacitive loads directly in buffer configuration |
| High dc precision | ±1 mV max input offset voltage and ±3 µV/°C drift support accurate dc signal amplification over temperature |
Applications
| Audio Processing | Data Acquisition |
|---|---|
Use Scenario: Electret microphone preamplification and bandpass filtering in portable voice recorders. IC Role / Device Role / Timing Role: Dual-channel OPA2342EA/2K5 provides first-stage gain (G = 100) and active bandpass filtering (300 Hz–3 kHz) before ADC sampling. Use Value: 0.006% THD+N and rail-to-rail output ensure clean analog signal capture at 2.7 V supply with <500 µA total system quiescent current. | Use Scenario: Buffering and scaling sensor outputs (e.g., thermistor, strain gauge) into 12-bit ADC inputs. IC Role / Device Role / Timing Role: Single-supply I/V conversion and level-shifting interface between high-impedance sensors and ADS7822 sampling ADC. Use Value: 1 mV output swing from rail maximizes usable ADC input range; 132 dB channel separation prevents cross-talk in multi-channel DAQ systems. |
| Process Control | Consumer Electronics |
Use Scenario: 4–20 mA loop receiver with voltage output for PLC analog input modules. IC Role / Device Role / Timing Role: Precision current-to-voltage conversion and output buffering in industrial 24 V-powered control systems. Use Value: 2.7–5.5 V operating range accommodates wide supply tolerances; ±1 mV offset ensures <0.1% full-scale error in 16-bit-equivalent applications. | Use Scenario: Headphone driver and line-out stage in compact media players. IC Role / Device Role / Timing Role: Low-noise, low-distortion dual op-amp driving stereo outputs with rail-to-rail swing into 32 Ω–10 kΩ loads. Use Value: 30 nV/√Hz input voltage noise density and 1 V/µs slew rate enable wideband audio fidelity without clipping at 3.3 V supply. |
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 (1 mA per amp), lower GBW (10 MHz), wider offset range (±2 mV) | Better for higher-speed signal chains but less suitable for ultra-low-power battery operation | Select MCP6022-I/SN when bandwidth >1 MHz and drive strength >25 mA are required; avoid if <300 µA total IQ is mandatory |
| TLV2462IDR | Lower quiescent current (23 µA/amp), slower slew rate (0.6 V/µs), higher offset (±1.5 mV) | Optimized for micropower sensor front-ends where speed is secondary to energy efficiency | Choose TLV2462IDR for sub-50 µA/channel systems; use OPA2342EA/2K5 when 1 V/µs slew and 0.006% THD+N are critical |
Compared with MCP6022-I/SN and TLV2462IDR, the OPA2342EA/2K5 uniquely balances 150 µA quiescent current, 1 MHz bandwidth, and 0.006% THD+N - making it optimal for space-constrained, battery-aware systems requiring both precision and speed in a single 3×3 mm MSOP package.
Availability
OPA2342EA/2K5 is available at Aetrix Electronics and suitable for data acquisition, audio processing, and process control applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for OPA2342EA/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 across industrial, automotive, and personal electronics markets.
The OPA2342EA/2K5 belongs to TI's MicroAmplifier™ series - engineered for miniature, low-power, rail-to-rail performance in space- and energy-constrained signal-conditioning applications.
FAQ
What is the maximum operating supply voltage for OPA2342EA/2K5?
The absolute maximum supply voltage for OPA2342EA/2K5 is 7.5 V between V+ and V– pins. However, the device is fully specified and guaranteed over 2.7 V to 5.5 V. Operation at 2.5 V is functional but outside guaranteed specifications. Exceeding 7.5 V risks permanent damage per TI's Absolute Maximum Ratings.
Does OPA2342EA/2K5 support true rail-to-rail input and output simultaneously?
Yes, OPA2342EA/2K5 supports rail-to-rail input common-mode range (–0.3 V to V+ + 0.3 V) and rail-to-rail output swing (within 1 mV of rails into 100 kΩ). Both features operate concurrently, enabling full dynamic range utilization in single-supply systems such as 3.3 V data loggers or 5 V audio interfaces.
What is the thermal resistance (θJA) of the OPA2342EA/2K5 MSOP-8 package?
The junction-to-ambient thermal resistance (θJA) for OPA2342EA/2K5 in its MSOP-8 (DGK) package is 150°C/W, as specified in the SBOS106A datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance improves with added copper pour or thermal vias beneath the exposed pad (if present - note DGK has no thermal pad).
Can OPA2342EA/2K5 drive capacitive loads without external compensation?
Yes, OPA2342EA/2K5 is unity-gain stable and can directly drive up to 250 pF of pure capacitive load. For larger capacitances or mixed R+C loads, a 10–20 Ω series resistor at the output (as shown in Figure 5 of SBOS106A) improves stability without degrading dc accuracy significantly - provided the parallel resistive load remains >10 kΩ.
Is OPA2342EA/2K5 pin-compatible with other dual op-amps in MSOP-8?
No - OPA2342EA/2K5 uses a non-standard pinout: Pins 1/8 = Out A/B, Pins 2/7 = –In A/B, Pins 3/6 = +In A/B, Pins 4/5 = V–/V+. This differs from industry-standard dual op-amp pinouts (e.g., SO-8 pin 1 = Out A, pin 2 = –In A, pin 3 = +In A, pin 4 = V–, pin 5 = +In B, pin 6 = –In B, pin 7 = Out B, pin 8 = V+). PCB layout must follow DGK drawing.
OPA2342EA/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:
- 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/2K5 FAQ
1.How can I place an order for OPA2342EA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2342EA/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 OPA2342EA/2K5 reliable?
The price and inventory of OPA2342EA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2342EA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA2342EA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2342EA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2342EA/2K5?
OPA2342EA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2342EA/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 OPA2342EA/2K5?
For technical support, including OPA2342EA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2342EA/2K5 requirements.
6.How does Aetrix verify that OPA2342EA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA2342EA/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 OPA2342EA/2K5 meets industry standards.
7.What is the process for return or replacement of OPA2342EA/2K5?
All OPA2342EA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2342EA/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 OPA2342EA/2K5 part is unused and in its original packaging.
Return procedure for OPA2342EA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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