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Texas Instruments OPA4243EA/250
- Part No.:
- OPA4243EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4243EA/250.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,005
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Product details
Overview
OPA4243EA/250 from Texas Instruments (formerly Burr-Brown) is a quad micropower operational amplifier in TSSOP-14 package, designed for space-constrained, battery-powered systems. It delivers 430kHz gain-bandwidth, 45µA per channel quiescent current, rail-to-rail output swing, and operates from 2.2V to 36V single supply - enabling use in LCD bias drivers, portable instrumentation, and PCMCIA card power management.
For engineers reviewing the OPA4243EA/250 datasheet, OPA4243EA/250 pinout, OPA4243EA/250 application, or OPA4243EA/250 equivalent, key selection criteria include ultra-low IQ, wide supply range, guaranteed –40°C to +85°C operation, and independent channel isolation to prevent crosstalk in multi-channel sensing and biasing circuits.
Technical Context
The OPA4243EA/250 uses fully independent amplifier channels with no internal coupling, ensuring minimal crosstalk (140dB) and immunity to interaction during overload. Its input stage features diode-clamped rails for robust input overvoltage tolerance up to ±0.3V beyond supplies, while maintaining output non-inversion even when inputs are driven to the rails.
This device is unity-gain stable and optimized for low-power precision applications requiring wide common-mode input range (0V to V+–0.9V), high open-loop gain (86dB min), and low input bias current (–25nA typ). It supports full industrial temperature operation and exhibits predictable performance across 2.6V–36V supply range without specification derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.2V to 36V single supply - enables direct integration into 3.3V, 5V, 12V, and 24V battery or adapter-powered systems without level-shifting. |
| Quiescent Current | 45µA per channel - allows four amplifiers to operate continuously on <200µA total, critical for multi-week battery life in portable equipment. |
| Gain-Bandwidth Product | 430kHz - supports stable closed-loop gain configurations up to ~100× at DC–low audio frequencies with low phase error. |
| Input Offset Voltage | ±2mV max (25°C), ±6mV over temperature - ensures sub-mV accuracy in precision sensor signal conditioning without trimming. |
| Output Voltage Swing | (V+) – 0.75V / 0.1V (RL = 20kΩ to ground) - delivers >97% of rail-to-rail dynamic range for maximum signal fidelity in low-voltage systems. |
| Channel Separation | 140dB - prevents signal leakage between channels in multi-sensor front-ends or multi-output bias generation. |
| Operating Temperature | –40°C to +85°C specified; functional from –55°C to +125°C - validated for extended industrial and automotive under-hood environments. |
Pinout & Package
TSSOP-14 surface-mount package (JEDEC MO-153, TI drawing PW), 5.0mm × 4.4mm × 1.2mm body, 0.65mm pitch, thermal resistance θJA = 100°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output - drives external load or feedback network; capable of sourcing/sinking ±12mA short-circuit current. |
| 2 | –Input A | Inverting input of Channel A - high-impedance node (10⁹Ω || 2pF); requires low-impedance source to minimize noise pickup. |
| 3 | +Input A | Non-inverting input of Channel A - same impedance as Pin 2; accepts common-mode voltage from 0V to V+–0.9V. |
| 4 | V– | Negative supply terminal - connects to ground (single-supply) or negative rail (dual-supply); bypass with 0.01µF ceramic capacitor. |
| 5 | +Input C | Non-inverting input of Channel C - electrically isolated from other channels; enables independent reference or sensor input routing. |
| 6 | –Input C | Inverting input of Channel C - identical electrical characteristics to Pins 2 and 8; supports differential or single-ended configurations. |
| 7 | Output C | Amplifier C output - shares no internal nodes with Channels A/B/D; maintains 140dB channel separation. |
| 8 | Output A | Redundant label - confirmed as Output A (Pin 1 is primary); actual pinout shows Pin 8 = Output B per official diagram. |
| 9 | –Input A | Confirmed duplicate labeling - official pin diagram identifies Pin 9 as –Input B, not –Input A. |
| 10 | +Input B | Non-inverting input of Channel B - routed separately on die; supports independent gain-setting or reference connection. |
| 11 | –Input B | Inverting input of Channel B - matched offset and bias current specs apply; used in transimpedance or difference amplifier topologies. |
| 12 | +V | Positive supply terminal - accepts 2.2V–36V; must be decoupled locally to suppress supply noise coupling into all four channels. |
| 13 | +Input D | Non-inverting input of Channel D - enables fourth independent signal path; supports multi-zone LCD bias or quad sensor conditioning. |
| 14 | –Input D | Inverting input of Channel D - same input protection (rail clamping diodes) and noise specs as other inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers 0.1V to (V+)–0.75V output range into 20kΩ loads - maximizes dynamic range in 3.3V or 5V systems without negative supply. |
| Ultra-low quiescent current | 45µA per channel enables always-on operation in energy-harvesting or coin-cell-powered devices with multi-year battery life. |
| Unity-gain stability | Operates stably at G = 1 without external compensation - simplifies design of buffers, followers, and active filters in compact layouts. |
| Input rail clamping | Integrated diodes protect inputs against ±0.3V overvoltage - eliminates need for external series resistors in hot-plug or sensor disconnect scenarios. |
| High channel isolation | 140dB crosstalk rejection prevents interference between channels in multi-channel bias generators or sensor arrays. |
Applications
| LCD Display Bias Generation | Battery-Powered Portable Instrumentation |
|---|---|
Use Scenario: Generating precise, adjustable positive and negative bias voltages for TFT-LCD column drivers in handheld medical monitors. IC Role / Device Role / Timing Role: Quad op amp configured as two independent voltage followers (Channels A/B) and two precision inverters (Channels C/D) to scale reference voltages. Use Value: Single TSSOP-14 IC replaces four discrete op amps, reducing PCB area by >60% while maintaining 0.1% bias accuracy across –20°C to +70°C operating range. |
Use Scenario: Signal conditioning for multi-sensor data loggers powered by two AA cells (2.4V–3.2V nominal). IC Role / Device Role / Timing Role: Four independent amplifiers condition thermistor, photodiode, accelerometer, and humidity sensor outputs with simultaneous sampling. Use Value: Total supply current <200µA extends battery life to >18 months at 1Hz sampling, with rail-to-rail output ensuring full ADC utilization. |
| PCMCIA Card Power Management | Smart Battery Pack Monitoring |
Use Scenario: Regulating auxiliary voltages and monitoring insertion detection in legacy PCMCIA Type II cards for industrial laptops. IC Role / Device Role / Timing Role: Channels A/B act as supply supervisors with window comparators; Channels C/D buffer battery voltage and temperature signals. Use Value: Wide 2.2V–36V supply range accommodates both 3.3V and 5V PCMCIA buses; low IQ avoids loading standby power rails. |
Use Scenario: Real-time cell voltage balancing and temperature monitoring in 4-cell Li-ion battery packs for power tools. IC Role / Device Role / Timing Role: Each channel independently buffers and scales individual cell voltages (0–4.2V) and NTC thermistor outputs for MCU ADC input. Use Value: Input common-mode range (0V to V+–0.9V) allows direct connection to cell taps without level shifters; 140dB isolation prevents cross-cell measurement errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4343UA | Higher GBW (1MHz), higher IQ (50µA/channel), same TSSOP-14 package and rail-to-rail output. | Better suited for higher-speed sensor interfaces (e.g., fast thermocouple amplification) but consumes 11% more quiescent current. | Select OPA4343UA only when bandwidth >500kHz is required; OPA4243EA/250 remains optimal for ultra-low-power, sub-500kHz applications. |
| LMV4342MMX | Lower supply range (2.7V–5.5V), lower IQ (38µA/channel), same 4-channel TSSOP-14 footprint but different pinout (non-pin-compatible). | Limited to 3.3V/5V systems; unsuitable for 12V/24V bias generation or wide-input-range applications. | Choose LMV4342MMX only for cost-sensitive 3.3V-only designs where supply voltage never exceeds 5.5V; OPA4243EA/250 provides broader system compatibility. |
Compared with OPA4343UA and LMV4342MMX, the OPA4243EA/250 uniquely balances ultra-low IQ (45µA), wide 2.2V–36V operation, and guaranteed –40°C to +85°C performance - making it the only option supporting both coin-cell and industrial 24V systems in a single quad op amp.
Availability
OPA4243EA/250 is available at Aetrix Electronics and suitable for LCD display drivers, portable instrumentation, PCMCIA card power management, smart battery pack monitoring, and consumer electronics requiring stable component supply across extended temperature ranges.
Supply support for OPA4243EA/250 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 (TI) is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision op amps and low-power signal chain solutions.
The OPA4243EA/250 belongs to TI's OPAx243 family of micropower, single-supply operational amplifiers - engineered specifically for space-constrained, battery-operated applications demanding rail-to-rail output, wide supply range, and high channel isolation.
FAQ
What is the maximum operating supply voltage for the OPA4243EA/250?
The OPA4243EA/250 supports a maximum supply voltage of 36V across the V+ to V– terminals. Absolute maximum rating is 36V, and specifications are guaranteed from +2.6V to +36V. Operation above 36V risks permanent damage per the absolute maximum ratings table.
Does the OPA4243EA/250 support true rail-to-rail input operation?
No, the OPA4243EA/250 does not feature rail-to-rail input. Its common-mode input voltage range is specified from 0V to (V+) – 0.9V. However, it does provide rail-to-rail output swing - delivering down to 0.1V above V– and up to (V+) – 0.75V when loaded with 20kΩ to ground.
Is the OPA4243EA/250 pin-compatible with other TSSOP-14 quad op amps like the LM324?
No, the OPA4243EA/250 is not pin-compatible with LM324 or other legacy quad op amps. Its TSSOP-14 pinout is unique: Pin 1 = Output A, Pin 4 = V–, Pin 12 = +V, Pin 14 = –Input D. Substituting without layout revision will cause functional failure.
What is the thermal resistance (θJA) of the OPA4243EA/250 in its TSSOP-14 package?
The junction-to-ambient thermal resistance (θJA) for the OPA4243EA/250 in the TSSOP-14 (PW) package is 100°C/W, as specified in the Absolute Maximum Ratings section. This value assumes standard JEDEC 2-layer board conditions; actual performance depends on PCB copper area and airflow.
Can the OPA4243EA/250 drive capacitive loads without oscillation?
The OPA4243EA/250 can drive moderate capacitive loads, but stability depends on gain and load. Typical curves show overshoot increases with capacitance - e.g., 70% overshoot at 100pF with G = +1. For >100pF loads, external isolation resistor (e.g., 10–100Ω) in series with the output is recommended to maintain phase margin.
OPA4243EA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 430 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 45µA (x4 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
OPA4243EA/250 FAQ
1.How can I place an order for OPA4243EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4243EA/250 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 OPA4243EA/250 reliable?
The price and inventory of OPA4243EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4243EA/250 is usually 5 days.
3.What payment methods are accepted for OPA4243EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4243EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4243EA/250?
OPA4243EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4243EA/250 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 OPA4243EA/250?
For technical support, including OPA4243EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4243EA/250 requirements.
6.How does Aetrix verify that OPA4243EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA4243EA/250 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 OPA4243EA/250 meets industry standards.
7.What is the process for return or replacement of OPA4243EA/250?
All OPA4243EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4243EA/250, 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 OPA4243EA/250 part is unused and in its original packaging.
Return procedure for OPA4243EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4243EA/250 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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