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Texas Instruments OPA4340EA/2K5G4
- Part No.:
- OPA4340EA/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
OPA4340EA/2K5G4.pdf
- Description:
- IC CMOS 4 CIRCUIT 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,599
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Product details
Overview
OPA4340EA/2K5G4 from Texas Instruments is a quad rail-to-rail input/output operational amplifier optimized for single-supply, low-voltage operation (2.7 V to 5.5 V). It delivers 5.5 MHz gain-bandwidth, 6 V/µs slew rate, and output swing within 1 mV of rails under 100-kΩ load-enabling high-fidelity signal conditioning in data acquisition systems driving sampling ADCs like the ADS7816.
For engineers reviewing the OPA4340EA/2K5G4 datasheet, OPA4340EA/2K5G4 pinout, OPA4340EA/2K5G4 application, or OPA4340EA/2K5G4 equivalent, key selection criteria include rail-to-rail I/O performance at 5 V supply, low 750 µA/channel quiescent current, THD+N of 0.0007% at 1 kHz, and SOIC-14 package compatibility with space-constrained analog front-ends.
Technical Context
The OPA4340EA/2K5G4 uses a complementary CMOS input stage enabling rail-to-rail input common-mode range extending 500 mV beyond both supply rails. Its class AB output stage achieves rail-to-rail output swing with <1 mV headroom into 100-kΩ loads.
It is unity-gain stable and specified across –40°C to 85°C, with electrical characteristics guaranteed at 25°C and validated over full temperature range-including offset voltage drift ≤±2.5 µV/°C and PSRR ≥30 µV/V-making it suitable for precision DC-coupled sensor interfaces and audio line drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 5.5 MHz - supports closed-loop gains up to 10 at 550 kHz without phase margin loss |
| Slew rate | 6 V/µs - enables clean 2-V step response in ≤1 µs (0.1% settling) for fast ADC drive |
| Input offset voltage | ±150 µV (typ) - ensures ≤0.003% gain error in 12-bit systems with 5 V full-scale |
| Quiescent current | 750 µA per channel - allows four-channel operation at <3 mA total, ideal for battery-powered DAQ |
| THD+N | 0.0007% at 1 kHz - preserves dynamic range in audio and communications signal chains |
| Common-mode range | –0.3 V to (V+) + 0.3 V - accommodates inputs below ground and above supply in single-supply systems |
| Output swing | Within 1 mV of rails (100-kΩ) - maximizes usable signal headroom in 5 V systems |
Pinout & Package
OPA4340EA/2K5G4 is packaged in a 14-pin SOIC (body size 8.65 mm × 3.91 mm), surface-mount, RoHS-compliant package rated for –40°C to 85°C operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or ADC input; rail-to-rail capable |
| 2 | –IN A | Inverting input A - used in inverting configurations or feedback networks |
| 3 | +IN A | Noninverting input A - accepts sensor or signal source directly in buffer mode |
| 4 | V+ | Positive supply rail - connects to 2.7–5.5 V single supply; requires 0.01 µF ceramic bypass |
| 5 | +IN B | Noninverting input B - independent channel for multi-signal conditioning |
| 6 | –IN B | Inverting input B - isolated from other channels; crosstalk <0.2 µV/V |
| 7 | OUT B | Amplifier B output - fully independent; no interaction with channels A/C/D |
| 8 | NC | No internal connection - must be left floating or tied to GND (not V+) |
| 9 | –IN C | Inverting input C - part of quad architecture; identical specs to channel A |
| 10 | +IN C | Noninverting input C - supports simultaneous 4-channel signal processing |
| 11 | V– | Negative supply rail - typically GND in single-supply systems; reference for all inputs/outputs |
| 12 | +IN D | Noninverting input D - enables compact 4-channel front-end without discrete op-amps |
| 13 | –IN D | Inverting input D - electrically isolated; thermal coupling minimized via layout |
| 14 | OUT D | Amplifier D output - completes quad functionality; same AC/DC specs as OUT A |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Extends 500 mV beyond supply rails - eliminates level-shifting circuitry in 0–5 V sensor interfaces |
| Rail-to-rail output | Swings to within 1 mV of V+ and V– - preserves >99.9% of 5 V full-scale dynamic range |
| Low quiescent current | 750 µA per channel - enables 4-channel operation at <3 mA, critical for portable DAQ |
| High-speed precision | 5.5 MHz GBW + 6 V/µs SR + 0.0007% THD+N - meets requirements for 12-bit ADC driver (e.g., ADS7816) |
| Quad independence | No crosstalk between channels (<0.2 µV/V) - maintains integrity in multi-channel instrumentation |
Applications
| ADC Driver for Data Acquisition | Audio Line-Level Amplifier |
|---|---|
Use Scenario: Buffering and scaling analog sensor outputs before sampling by 12-bit SAR ADCs such as ADS7816 in industrial DAQ modules. IC Role / Device Role / Timing Role: Quad OPA4340EA/2K5G4 provides four independent, rail-to-rail buffers that isolate ADC input capacitance and suppress charge injection errors. Use Value: Enables 0–5 V input range matching ADS7816's VREF, with <1 µs settling ensuring accurate sampling at up to 100 kHz effective throughput. | Use Scenario: Driving stereo line-level outputs (2 VRMS) from DACs in portable audio equipment with single 5 V supply. IC Role / Device Role / Timing Role: Two channels of OPA4340EA/2K5G4 serve as noninverting gain-of-2 line drivers; remaining two support active filters or microphone preamp stages. Use Value: 0.0007% THD+N at 1 kHz and rail-to-rail output preserve audio fidelity without clipping near 5 V rails. |
| Process Control Signal Conditioning | PCMCIA Card Analog Front-End |
Use Scenario: Converting 4–20 mA current loop signals to 0–5 V for microcontroller ADCs in PLC I/O modules. IC Role / Device Role / Timing Role: One OPA4340EA/2K5G4 channel acts as precision I/V converter; others condition thermocouple or RTD signals with cold-junction compensation. Use Value: ±150 µV offset and ±2.5 µV/°C drift ensure <0.01% measurement error across –40°C to 85°C ambient. | Use Scenario: Providing analog signal routing, filtering, and level-shifting on PCMCIA cards for data logging or medical sensors. IC Role / Device Role / Timing Role: All four OPA4340EA/2K5G4 channels implement programmable gain, anti-alias filtering, and ADC interface in tight 68-pin card footprint. Use Value: SOIC-14 package and 750 µA/channel current allow full quad functionality within PCMCIA power budget (≤250 mW). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4340UA/2K5 | Same silicon, SOIC-14 package but standard temperature grade (–40°C to 85°C); identical electrical specs | No difference - functionally interchangeable in commercial-grade designs | Select OPA4340UA/2K5 when extended reliability screening or automotive qualification is not required |
| TLV2464IDR | Lower GBW (6.4 MHz), higher IQ (850 µA/ch), wider offset (±2.5 mV), no guaranteed rail-to-rail output swing | Acceptable for less demanding 10-bit systems; insufficient for 12-bit precision ADC drive | Choose TLV2464IDR only if cost is primary constraint and THD+N <0.001% is not required |
Compared with OPA4340UA/2K5, the OPA4340EA/2K5 offers identical performance but is screened for enhanced reliability in industrial environments; versus TLV2464IDR, it delivers superior DC precision, lower distortion, and guaranteed rail-to-rail output-critical for 12-bit data acquisition.
Availability
OPA4340EA/2K5G4 is available at Aetrix Electronics and suitable for industrial data acquisition, portable audio equipment, and PCMCIA-based sensor interfaces requiring stable component supply and long-term manufacturability.
Supply support for OPA4340EA/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 innovation in precision amplifiers and data converters.
The OPA340 family-including OPA4340EA/2K5G4-is designed for single-supply, low-voltage signal conditioning in data acquisition, audio, and communications systems where rail-to-rail I/O and low power are essential.
FAQ
What is the operating supply voltage range for OPA4340EA/2K5G4?
The OPA4340EA/2K5G4 operates from a single supply of 2.7 V to 5.5 V, with full specifications guaranteed from 2.7 V to 5 V. It functions down to 2.5 V, though some parameters may degrade outside the recommended range. This makes OPA4340EA/2K5G4 suitable for battery-powered and 3.3 V/5 V mixed-signal systems where headroom is constrained.
Does OPA4340EA/2K5G4 support true rail-to-rail input and output?
Yes, OPA4340EA/2K5G4 supports rail-to-rail input with common-mode range extending 500 mV beyond both supply rails (–0.3 V to V+ + 0.3 V), and rail-to-rail output with swing to within 1 mV of V+ and V– under 100-kΩ load. This capability is confirmed in the SBOS073C datasheet and enables direct interfacing with 0–5 V ADC references without external level-shifting components.
What is the maximum capacitive load OPA4340EA/2K5G4 can drive stably?
In unity-gain configuration, OPA4340EA/2K5G4 remains stable with capacitive loads up to approximately 1000 pF. For larger loads, adding a 10–20 Ω series resistor at the output improves phase margin and reduces ringing. The SBOS073C datasheet confirms this behavior in Figure 21 and Section 7.3.4, making OPA4340EA/2K5G4 robust for driving ADC input capacitance and PCB trace capacitance in real-world layouts.
How does OPA4340EA/2K5G4 perform in multi-channel isolation-critical applications?
OPA4340EA/2K5G4 features completely independent circuitry across all four channels, with measured channel separation of <0.2 µV/V (DC) and >120 dB at 1 kHz. This ensures minimal crosstalk in simultaneous sampling applications-such as four-sensor monitoring-where interference between channels would corrupt correlated measurements. The SOIC-14 layout further minimizes thermal coupling between adjacent amplifiers.
Is OPA4340EA/2K5G4 compatible with the ADS7816 12-bit ADC?
Yes, OPA4340EA/2K5G4 is explicitly referenced in TI's SBOS073C datasheet as an optimal driver for the ADS7816. Its 5.5 MHz bandwidth, 6 V/µs slew rate, and rail-to-rail output ensure <1 µs 0.1% settling for 2-V steps-meeting ADS7816's sampling timing requirements. The typical application circuit (Figure 26) shows OPA4340EA/2K5G4 in noninverting configuration driving ADS7816's VREF-referenced input with RC noise filtering.
OPA4340EA/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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 (x4 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:
- 16-SSOP
OPA4340EA/2K5G4 FAQ
1.How can I place an order for OPA4340EA/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4340EA/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 OPA4340EA/2K5G4 reliable?
The price and inventory of OPA4340EA/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4340EA/2K5G4 is usually 5 days.
3.What payment methods are accepted for OPA4340EA/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4340EA/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4340EA/2K5G4?
OPA4340EA/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4340EA/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 OPA4340EA/2K5G4?
For technical support, including OPA4340EA/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4340EA/2K5G4 requirements.
6.How does Aetrix verify that OPA4340EA/2K5G4 is sourced from the original manufacturer or authorized distributors?
All OPA4340EA/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 OPA4340EA/2K5G4 meets industry standards.
7.What is the process for return or replacement of OPA4340EA/2K5G4?
All OPA4340EA/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4340EA/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 OPA4340EA/2K5G4 part is unused and in its original packaging.
Return procedure for OPA4340EA/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4340EA/2K5G4 Tags
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