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Texas Instruments OPA2340EA/2K5G4
- Part No.:
- OPA2340EA/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2340EA/2K5G4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,514
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Product details
Overview
OPA2340EA/2K5G4 from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for single-supply, low-voltage signal conditioning. It delivers 5.5 MHz gain-bandwidth, 6 V/µs slew rate, <0.0007% THD+N at 1 kHz, 750 µA per channel quiescent current, and output swing within 1 mV of rails under light load - enabling high-fidelity buffering of ADC inputs like the ADS7816 in data acquisition systems.
For engineers reviewing the OPA2340EA/2K5G4 datasheet, OPA2340EA/2K5G4 pinout, OPA2340EA/2K5G4 application, or OPA2340EA/2K5G4 equivalent, key selection criteria include rail-to-rail I/O performance at 2.7–5.5 V supply, dual-channel independence for multi-sensor interfaces, low-noise (25 nV/√Hz) analog front-end design, and VSSOP-8 packaging for space-constrained PCB layouts.
Technical Context
The OPA2340EA/2K5G4 employs a complementary CMOS input stage with parallel N- and P-channel differential pairs to achieve rail-to-rail input common-mode range extending 500 mV beyond both supply rails. Its class AB output stage enables rail-to-rail output swing - within 1 mV of V+ and V− with 100-kΩ load - while maintaining >106 dB open-loop gain and 92 dB CMRR over –40°C to 85°C.
This dual op-amp operates unity-gain stable and supports driving capacitive loads up to 1000 pF without external compensation. Its 0.0007% THD+N at 1 kHz and 8 µVRMS integrated noise (0.1–50 kHz) make it suitable for precision audio and high-resolution ADC interface applications where signal integrity and dynamic range are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 5.5 MHz - supports stable closed-loop operation up to ~100 kHz with moderate gain before phase margin degradation. |
| Slew rate | 6 V/µs - enables clean 2-V step response in ≤1 µs (0.1% settling), critical for driving sampling ADCs like ADS7816. |
| Input offset voltage | ±150 µV (typ) - ensures <1 LSB error when buffering 12-bit ADCs with 5-V full-scale range. |
| THD + Noise | 0.0007% at 1 kHz - preserves signal fidelity in audio and precision measurement paths without post-processing correction. |
| Quiescent current | 750 µA per channel - allows dual-channel signal conditioning in battery-powered or thermally constrained systems. |
| Input voltage range | –0.3 V to (V+) + 0.3 V - accommodates signals slightly beyond supply rails, simplifying level-shifting in mixed-voltage systems. |
| Output swing | Within 1 mV of rails (100-kΩ load) - maximizes usable dynamic range in 3.3-V or 5-V single-supply designs. |
Pinout & Package
The OPA2340EA/2K5G4 is packaged in an 8-pin VSSOP (DGK) with 3.00 mm × 3.00 mm body size, optimized for high-density PCB layouts and thermal performance (RθJA = 169.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V− (Pin 4) | Negative power supply | Reference ground or lowest supply rail; must be bypassed with 0.1-µF ceramic capacitor near package. |
| +IN A (Pin 3) | Noninverting input, Channel A | High-impedance (1013 Ω) node accepting rail-to-rail input signals; connects to sensor or DAC output. |
| –IN A (Pin 2) | Inverting input, Channel A | Used in inverting configurations or feedback networks; matched bias current minimizes offset errors. |
| OUT A (Pin 1) | Output, Channel A | Drives ADC input, filter network, or next-stage buffer; capable of 50 mA short-circuit current. |
| OUT B (Pin 7) | Output, Channel B | Fully independent output; supports dual-sensor conditioning or stereo audio paths without crosstalk. |
| –IN B (Pin 6) | Inverting input, Channel B | Electrically isolated from Channel A; enables simultaneous processing of two analog signals. |
| +IN B (Pin 5) | Noninverting input, Channel B | Same rail-to-rail input capability as Channel A; supports differential or single-ended signal routing. |
| V+ (Pin 8) | Positive power supply | Accepts 2.7–5.5 V single supply; requires local 0.1-µF ceramic decoupling to suppress high-frequency noise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Common-mode range extends 500 mV beyond V− and V+, eliminating need for level-shifting circuitry in low-voltage systems. |
| Rail-to-rail output | Swings to within 1 mV of supply rails with 100-kΩ load - preserves >99.9% of available dynamic range at 3.3 V or 5 V. |
| Low THD + noise | 0.0007% distortion + 25 nV/√Hz input voltage noise enables 16+ ENOB in precision data acquisition front ends. |
| Independent dual channels | No crosstalk between amplifiers; maintains channel separation >120 dB at DC, critical for multi-channel sensor arrays. |
| Microsize VSSOP-8 | 3.00 mm × 3.00 mm footprint saves >60% board area vs SOIC-8, supporting compact portable and IoT device designs. |
Applications
| ADC Input Buffering | Audio Line Driver |
|---|---|
Use Scenario: Driving the analog input of a 12-bit sampling ADC (e.g., ADS7816) in a portable data logger with 3.3-V supply. IC Role / Device Role / Timing Role: Buffers high-impedance sensor signal, absorbs charge injection from ADC sample capacitor, and provides fast settling (<1 µs) before conversion. Use Value: Prevents missing codes and gain errors by maintaining signal integrity during switching transients; enables full 12-bit resolution without calibration. |
Use Scenario: Output stage of a battery-powered headphone amplifier delivering 0–2 VPP signal to 32-Ω headphones. IC Role / Device Role / Timing Role: Low-noise, low-distortion voltage follower providing current gain and isolation between DAC and load. Use Value: Delivers 0.0007% THD+N at 1 kHz, preserving audio clarity; rail-to-rail output maximizes loudness headroom on 3.3-V supply. |
| Multi-Sensor Signal Conditioning | Industrial Process Monitoring |
Use Scenario: Simultaneous amplification of temperature and pressure sensor outputs in a PLC analog input module. IC Role / Device Role / Timing Role: Dual-channel instrumentation buffer with matched gain and offset characteristics across channels. Use Value: Eliminates inter-channel crosstalk (<–120 dB) and drift mismatch (±2.5 µV/°C), ensuring correlated measurements for closed-loop control. |
Use Scenario: Front-end conditioning for 4–20 mA loop-powered transmitters in factory automation systems. IC Role / Device Role / Timing Role: I/V converter and anti-alias filter driver operating from 24-V supply with internal LDO-derived 5-V rail. Use Value: Rail-to-rail input accepts 0–5 V sensor output directly; low quiescent current (750 µA/channel) minimizes self-heating in sealed enclosures. |
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 |
|---|---|---|---|
| OPA2340UA/2K5 | Same electrical specs; packaged in SOIC-8 (4.90 mm × 3.91 mm) instead of VSSOP-8. | Requires larger PCB area; better thermal dissipation (RθJA = 138.4°C/W vs 169.2°C/W) but less suited for ultra-compact layouts. | Select when board space permits and higher power handling is needed; not drop-in compatible due to different footprint. |
| MCP6022-I/SN | Lower bandwidth (10 MHz), higher quiescent current (1 mA/channel), no guaranteed rail-to-rail input below V−. | Less suitable for sub-1-LSB ADC buffering at low supply voltages; acceptable for general-purpose gain stages above 2.7 V. | Choose for cost-sensitive industrial applications where 5.5-MHz GBW and 1-mV rail margin are noncritical. |
Compared with OPA2340UA/2K5 and MCP6022-I/SN, the OPA2340EA/2K5G4 uniquely combines VSSOP-8 miniaturization, 5.5-MHz bandwidth, rail-to-rail input down to –0.3 V, and 1-mV rail output swing - making it optimal for space-constrained, high-fidelity analog signal chains requiring minimal external components.
Availability
OPA2340EA/2K5G4 is available at Aetrix Electronics and suitable for data acquisition, portable audio, industrial process monitoring, and multi-sensor interface applications requiring stable component supply and long-term production continuity.
Supply support for OPA2340EA/2K5G4 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 OPA2340EA/2K5G4 belongs to TI's MicroAmplifier™ series - designed specifically for low-voltage, single-supply systems demanding rail-to-rail I/O, low distortion, and micro-size packaging in portable and industrial instrumentation.
FAQ
What is the maximum supply voltage for the OPA2340EA/2K5G4?
The OPA2340EA/2K5G4 supports a maximum supply voltage of 5.5 V across V+ and V− pins. Operation is fully specified from 2.7 V to 5 V, but the device remains functional up to 5.5 V. Exceeding this limit risks permanent damage per absolute maximum ratings in the official datasheet SBOS073C.
Does the OPA2340EA/2K5G4 support rail-to-rail input below ground?
Yes - the OPA2340EA/2K5G4 features true rail-to-rail input with a common-mode range extending to –0.3 V (500 mV below V−) when V− = 0 V. This allows direct interfacing with bipolar signals or sensors referenced below ground without level-shifting circuitry.
Can the OPA2340EA/2K5G4 drive a 1000-pF capacitive load stably?
Yes, the OPA2340EA/2K5G4 is characterized to drive up to 1000 pF in unity-gain configuration without oscillation. For loads >100 pF, TI recommends adding a 10–20 Ω series resistor at the output to improve phase margin - a technique validated in Figure 25 of SBOS073C.
What is the typical input bias current of the OPA2340EA/2K5G4?
The OPA2340EA/2K5G4 exhibits ultra-low input bias current of ±0.2 pA (typical) at 25°C, enabled by its CMOS input stage. This value increases to ±60 pA over the full –40°C to 85°C temperature range, making it ideal for high-impedance sensor interfaces like photodiode amplifiers.
Is the OPA2340EA/2K5G4 pin-compatible with other OPA2340 variants?
No - the OPA2340EA/2K5G4 uses the VSSOP-8 (DGK) package, while OPA2340UA/2K5 uses SOIC-8 and OPA2340P has PDIP-8. Pin functions are identical across packages, but footprints differ. PCB layout must match the DGK mechanical dimensions (3.00 mm × 3.00 mm) and 0.5-mm pitch.
OPA2340EA/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- 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:
- 6V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 750µA (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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2340EA/2K5G4 FAQ
1.How can I place an order for OPA2340EA/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2340EA/2K5G4 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 OPA2340EA/2K5G4 reliable?
The price and inventory of OPA2340EA/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2340EA/2K5G4 is usually 5 days.
3.What payment methods are accepted for OPA2340EA/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2340EA/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2340EA/2K5G4?
OPA2340EA/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2340EA/2K5G4 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 OPA2340EA/2K5G4?
For technical support, including OPA2340EA/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2340EA/2K5G4 requirements.
6.How does Aetrix verify that OPA2340EA/2K5G4 is sourced from the original manufacturer or authorized distributors?
All OPA2340EA/2K5G4 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 OPA2340EA/2K5G4 meets industry standards.
7.What is the process for return or replacement of OPA2340EA/2K5G4?
All OPA2340EA/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2340EA/2K5G4, 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 OPA2340EA/2K5G4 part is unused and in its original packaging.
Return procedure for OPA2340EA/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2340EA/2K5G4 Tags
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