My Inquiry
My Account
Texas Instruments OPA4342PA
- Part No.:
- OPA4342PA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
OPA4342PA.pdf
- Description:
- IC CMOS 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,289
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA4342PA from Texas Instruments is a quad rail-to-rail input/output CMOS operational amplifier optimized for low-cost, low-power, miniature applications operating on single supplies from 2.7V to 5.5V. It delivers 1MHz bandwidth, 1V/µs slew rate, ±6mV max input offset voltage, 0.006% THD+N at 1kHz, and rail-to-rail output swing within 1mV of rails under light load - ideal for driving sampling ADCs in portable data acquisition systems.
For engineers reviewing the OPA4342PA datasheet, OPA4342PA pinout, OPA4342PA application, or OPA4342PA equivalent, key selection criteria include its 150µA typical quiescent current per amplifier, 300mV beyond-rail input common-mode range, 10¹³ Ω input impedance, –40°C to +85°C temperature rating, and DIP-14 through-hole package compatibility with legacy prototyping and industrial control boards.
Technical Context
The OPA4342PA implements a complementary differential input stage (N-channel + P-channel pairs) enabling rail-to-rail input operation with a 300mV beyond-supply common-mode range. Its class AB output stage supports rail-to-rail output swing down to 1mV from rails into high-impedance loads while maintaining ≥96dB open-loop gain at 100kΩ load.
Designed for unity-gain stability, it drives up to 250pF capacitive loads directly and supports single-supply operation as low as 2.5V. Channel separation exceeds 132dB at DC and remains >100dB up to 100kHz, ensuring minimal crosstalk in quad configurations used for multi-channel signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 1MHz gain-bandwidth product - enables stable closed-loop gain up to 100× at 10kHz for sensor amplification. |
| Slew Rate | 1V/µs - supports clean 10kHz full-scale sine output without distortion in audio and DAC I/V conversion. |
| Input Offset Voltage | ±6mV max - ensures ≤0.12% error in 5V full-scale instrumentation amplifier stages. |
| THD + Noise | 0.006% at 1kHz - meets fidelity requirements for speech bandpass filtering and consumer audio front-ends. |
| Quiescent Current | 150µA typ per amplifier - allows four-channel operation below 600µA total, critical for battery-powered PCMCIA cards. |
| Input Impedance | 10¹³ Ω || 6pF - minimizes loading on high-Z sources like piezoelectric sensors and electret microphones. |
| Output Swing | Within 1mV of rails (RL ≥ 100kΩ) - maximizes dynamic range in 3.3V or 5V single-supply systems. |
Pinout & Package
DIP-14 through-hole package (Package Drawing 010), 0.300" wide body, 0.100" lead pitch, suitable for breadboarding, industrial control PCBs, and legacy test equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Amplifier A output - drives ADC input or active filter stage with rail-to-rail swing. |
| 2 | –In A | Inverting input A - accepts feedback network for precision gain configuration. |
| 3 | +In A | Non-inverting input A - connects to sensor, reference, or signal source with 300mV beyond-rail tolerance. |
| 4 | V– | Negative supply rail - tied to ground in single-supply operation; supports input common-mode down to –0.3V. |
| 5 | +In B | Non-inverting input B - independent channel for parallel signal paths (e.g., dual-channel data acquisition). |
| 6 | –In B | Inverting input B - isolated from Channel A to prevent crosstalk (<0.2µV/V dc separation). |
| 7 | Out B | Amplifier B output - fully independent output stage; no interaction with Channel A under overload. |
| 8 | V+ | Positive supply rail - operates from 2.7V to 5.5V; bypass with 0.01µF ceramic capacitor. |
| 9 | Out C | Amplifier C output - enables three-channel simultaneous sampling without shared supply path degradation. |
| 10 | –In C | Inverting input C - laser-trimmed matching to Channels A/B ensures consistent gain error across quad channels. |
| 11 | +In C | Non-inverting input C - supports common-mode voltages up to (V+) + 0.3V for overvoltage-tolerant sensing. |
| 12 | +In D | Non-inverting input D - configured identically to other channels; all specs guaranteed over –40°C to +85°C. |
| 13 | –In D | Inverting input D - maintains ±10pA max input bias current across temperature for high-impedance transducer interfaces. |
| 14 | Out D | Amplifier D output - delivers same 1V/µs slew rate and 1MHz bandwidth as other channels for synchronized multi-channel buffering. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Common-mode range extends 300mV beyond V+ and V– rails - enables direct interfacing with 0–5V DAC outputs and 3.3V logic without level-shifting. |
| Rail-to-rail output stage | Swings within 1mV of supply rails into 100kΩ - preserves >99.9% of available dynamic range in 3.3V systems. |
| Ultra-low quiescent current | 150µA per amplifier typ - allows four-channel operation at <600µA, extending battery life in portable test equipment. |
| High input impedance | 10¹³ Ω differential input resistance - prevents loading of high-Z sources such as pH electrodes and piezoceramic sensors. |
| Unity-gain stable | No external compensation required - simplifies design of buffers, active filters, and ADC drivers with predictable phase margin. |
Applications
| Communications Interface | Data Acquisition Front-End |
|---|---|
Use Scenario: Level-shifting and buffering RS-232 or USB UART signals in mixed-voltage embedded systems. IC Role / Device Role / Timing Role: Quad op-amp provides independent line receivers, transmitter drivers, and reference buffers in one DIP-14 package. Use Value: Eliminates need for four discrete SO-14 op-amps, reducing board area by 60% and simplifying layout for noise-sensitive analog-digital boundaries. | Use Scenario: Conditioning sensor outputs (thermocouple, strain gauge) before digitization in portable environmental monitors. IC Role / Device Role / Timing Role: Configured as precision instrumentation amplifier (Ch A/B) and anti-aliasing filter (Ch C/D) with matched gain and offset. Use Value: 0.006% THD+N and ±6mV offset ensure <12-bit effective resolution when driving ADS7822 12-bit ADCs. |
| Audio Signal Processing | Process Control Loop |
Use Scenario: Amplifying and filtering microphone signals in voice-controlled IoT devices powered by coin-cell batteries. IC Role / Device Role / Timing Role: One channel for electret mic biasing, two for bandpass filtering (300Hz–3kHz), one for AGC reference generation. Use Value: 150µA per amplifier enables full 4-channel audio path operation below 600µA, extending battery runtime to >12 months. | Use Scenario: Isolating and scaling 4–20mA current loop signals in PLC analog input modules. IC Role / Device Role / Timing Role: Converts I/V with Ch A, provides loop-powered receiver with Ch B/C, and drives HART modem interface with Ch D. Use Value: Rail-to-rail input accommodates 0–25V loop compliance voltage; 10¹³ Ω input impedance prevents signal loss across 250Ω shunt resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464AIPW | Higher 2.5mA quiescent current per amp; 6.4MHz GBW; SO-14 only - no DIP option. | Better speed for higher-frequency filtering but unsuitable for ultra-low-power designs. | Select when bandwidth >1MHz is required and DIP packaging is not mandatory. |
| LM324N | Non-rail-to-rail I/O; 0.6V output headroom; 700kHz GBW; 1.2mA IQ - legacy bipolar process. | Limited dynamic range in 3.3V systems; higher power consumption disqualifies battery use. | Choose only for cost-sensitive, non-critical industrial controls where rail-to-rail performance is unnecessary. |
Compared with TLV2464AIPW and LM324N, OPA4342PA uniquely combines DIP-14 through-hole compatibility, 150µA quiescent current, rail-to-rail I/O, and 1MHz bandwidth - making it the only viable option for low-power, prototyping-friendly, precision quad op-amp applications requiring full supply rail utilization.
Availability
OPA4342PA is available at Aetrix Electronics and suitable for communications interface design, portable data acquisition systems, audio signal processing, and process control loop implementation requiring stable component supply and long-term obsolescence management.
Supply support for OPA4342PA 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 ICs, embedded processors, and educational technology, with decades of expertise in precision amplifiers and signal chain solutions.
The OPA342 family - including OPA4342PA - was designed specifically for low-cost, low-power, rail-to-rail signal conditioning in space-constrained, battery-operated, and industrial measurement applications.
FAQ
What is the maximum operating supply voltage for OPA4342PA?
The absolute maximum supply voltage for OPA4342PA is 7.5V between V+ and V– pins. However, the device is fully specified and guaranteed over 2.7V to 5.5V. Operation above 5.5V may cause parametric shifts or reliability degradation, and is not recommended for production designs using OPA4342PA.
Does OPA4342PA support true rail-to-rail input with signals beyond the supply rails?
Yes - OPA4342PA accepts input common-mode voltages from (V–) –0.3V to (V+) +0.3V, enabling 300mV beyond-rail operation. This allows direct connection to 5V logic outputs in 3.3V systems or overvoltage-tolerant sensor interfaces, provided input current is limited to ≤10mA per pin as specified in the absolute maximum ratings for OPA4342PA.
Can OPA4342PA drive capacitive loads without external compensation?
Yes - OPA4342PA is unity-gain stable and can directly drive up to 250pF capacitive loads in unity-gain configuration. For larger loads or higher gains, stability improves further. If ringing occurs with 250pF, adding a 10Ω–20Ω series resistor at the output (as documented in the OPA4342PA application notes) restores clean step response without affecting DC accuracy.
What is the thermal resistance (θJA) of the OPA4342PA DIP-14 package?
The junction-to-ambient thermal resistance (θJA) for OPA4342PA in the DIP-14 package is 100°C/W, measured under standard JEDEC conditions (1-inch² copper pad, 1oz copper). This value assumes proper PCB layout with adequate copper pour; actual thermal performance in end equipment may vary based on board stack-up and airflow, but OPA4342PA remains rated for continuous operation up to +85°C ambient.
Is OPA4342PA pin-compatible with other quad op-amps in DIP-14 packages?
No - OPA4342PA uses a non-standard pinout optimized for quad independence: pins 1–3/5–7/9–11/12–14 serve Channels A/B/C/D respectively, with V– on pin 4 and V+ on pin 8. It is not pin-compatible with LM324N (V+ on pin 4, V– on pin 11) or TL084 (V+ on pin 8, V– on pin 4). Layout must follow the OPA4342PA-specific pin mapping to ensure correct operation.
OPA4342PA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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 (x4 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
OPA4342PA FAQ
1.How can I place an order for OPA4342PA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4342PA 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 OPA4342PA reliable?
The price and inventory of OPA4342PA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4342PA is usually 5 days.
3.What payment methods are accepted for OPA4342PA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4342PA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4342PA?
OPA4342PA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4342PA 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 OPA4342PA?
For technical support, including OPA4342PA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4342PA requirements.
6.How does Aetrix verify that OPA4342PA is sourced from the original manufacturer or authorized distributors?
All OPA4342PA 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 OPA4342PA meets industry standards.
7.What is the process for return or replacement of OPA4342PA?
All OPA4342PA units undergo pre-shipment inspection (PSI). If there is an issue with OPA4342PA, 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 OPA4342PA part is unused and in its original packaging.
Return procedure for OPA4342PA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4342PA Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
