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Texas Instruments OPA4243EA/2K5
- Part No.:
- OPA4243EA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4243EA/2K5.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,140
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Product details
Overview
OPA4243EA/2K5 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 input/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/2K5 datasheet, OPA4243EA/2K5 pinout, OPA4243EA/2K5 application, or OPA4243EA/2K5 equivalent, key selection criteria include ultra-low IQ, wide supply range, unity-gain stability, high channel separation (140dB), and operation across –40°C to +85°C with extended –55°C to +125°C capability.
Technical Context
The OPA4243EA/2K5 uses fully independent per-channel circuitry to eliminate crosstalk and maintain performance under overload conditions. Its input stage features diode-clamped rails enabling robust rail-to-rail input operation without output inversion - critical for precision biasing in analog front-ends.
It achieves unity-gain stability with no external compensation required, supports capacitive load drive up to 100pF (per typical curves), and maintains consistent open-loop gain (≥86dB), CMRR (≥82dB), and PSRR (≥100µV/V) across its full 2.6V–36V operating voltage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.2V to 36V single supply (±1.1V to ±18V dual); enables direct integration into wide-input industrial and battery systems without regulation. |
| Quiescent Current | 45µA per channel at 25°C; allows four op amps to operate on <200µA total - ideal for always-on sensor nodes and energy-harvesting designs. |
| Gain-Bandwidth Product | 430kHz; supports stable closed-loop gain ≥1 with bandwidth sufficient for DC–100kHz signal conditioning in portable medical and measurement gear. |
| Input Offset Voltage | ±2mV max at 25°C; ensures ≤20mV error in 10V full-scale applications without trimming - suitable for low-cost precision amplification. |
| Channel Separation | 140dB at 1kHz; prevents signal coupling between channels in multi-sensor readout or multi-output bias generation circuits. |
| Output Swing | Within 0.2V of rails (RL = 20kΩ to ground); delivers >95% of supply headroom for maximizing dynamic range in single-supply data acquisition. |
| Operating Temperature | –40°C to +85°C specified; validated operation to +125°C enables deployment in automotive cabin and industrial control environments. |
Pinout & Package
TSSOP-14 surface-mount package (JEDEC MO-153, TI drawing PW), 5.0mm × 4.4mm footprint, 0.65mm pitch, 1.2mm max height. Thermal resistance θJA = 100°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +Input A | Non-inverting input for Channel A; rail-to-rail capable, diode-clamped to V+ and V–. |
| 2 | –Input A | Inverting input for Channel A; matched impedance, low bias current (–25nA typ). |
| 3 | Output A | Amplified output for Channel A; drives loads down to 20kΩ with full swing. |
| 4 | V– | Negative supply terminal; shared by all four channels; accepts ground or negative rail. |
| 5 | +Input B | Non-inverting input for Channel B; electrically isolated from other channels. |
| 6 | –Input B | Inverting input for Channel B; independent bias network, no crosstalk coupling. |
| 7 | Output B | Amplified output for Channel B; same drive strength and swing as Output A. |
| 8 | Output C | Amplified output for Channel C; identical AC/DC specs to Outputs A/B/D. |
| 9 | –Input C | Inverting input for Channel C; low noise density (22nV/√Hz) supports precision sensing. |
| 10 | +Input C | Non-inverting input for Channel C; common-mode range extends to V– –0.3V and V+ +0.3V. |
| 11 | V+ | Positive supply terminal; powers all four channels; bypass with 0.01µF ceramic capacitor. |
| 12 | +Input D | Non-inverting input for Channel D; supports independent feedback networks per channel. |
| 13 | –Input D | Inverting input for Channel D; low input offset current (±10nA max) minimizes error in high-Z sources. |
| 14 | Output D | Amplified output for Channel D; short-circuit protected (±12mA/–25mA). |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent amplifiers | Zero crosstalk architecture ensures channel isolation >140dB - essential for simultaneous multi-channel signal conditioning. |
| Rail-to-rail input/output | Input common-mode range includes both rails; output swings within 0.2V of V+ and V– - maximizes usable signal range in 3.3V or 5V systems. |
| Unity-gain stable | No external compensation required; simplifies design for gain-of-1 buffers, active filters, and transimpedance stages. |
| Ultra-low quiescent current | 45µA per channel enables four-op-amp functionality in sub-200µA system budgets - critical for coin-cell or energy-harvesting applications. |
| Wide supply range | Operates from 2.2V (single) to 36V (single) or ±18V (dual); eliminates need for separate LDOs in mixed-voltage subsystems. |
Applications
| LCD Display Bias Generation | Battery-Powered Portable Instrumentation |
|---|---|
Use Scenario: Generating precise, stable bias voltages (VCOM, VON, VOFF) for segment and common electrodes in monochrome and color STN/TFT LCD modules. IC Role / Device Role / Timing Role: Quad op amp configured as precision voltage followers and level-shifted references; each channel independently sets one bias rail. Use Value: Rail-to-rail output swing ensures full utilization of available supply headroom; low IQ extends battery life in handheld test meters and field calibrators. |
Use Scenario: Signal conditioning and sensor excitation in handheld multimeters, portable gas analyzers, and battery-operated oscilloscopes. IC Role / Device Role / Timing Role: Four-channel signal path: two for sensor pre-amplification, one for reference buffering, one for DAC output filtering. Use Value: 430kHz GBW supports accurate 100kHz waveform capture; 140dB channel separation prevents cross-talk between analog input and reference paths. |
| PCMCIA Card Analog Interface | Smart Battery Pack Monitoring |
Use Scenario: Providing analog I/O expansion on legacy PCMCIA cards - including thermistor readout, voltage monitoring, and DAC output buffering. IC Role / Device Role / Timing Role: Quad op amp used for differential sensor amplification, supply rail monitoring, battery voltage scaling, and analog multiplexer driver. Use Value: Wide 2.2V–36V supply range accommodates variable PCMCIA bus voltages (3.3V/5V/12V); TSSOP-14 footprint fits tight card-edge layouts. |
Use Scenario: Real-time cell voltage balancing, temperature sensing, and charge/discharge current amplification in multi-cell Li-ion battery packs. IC Role / Device Role / Timing Role: Per-cell voltage follower (x3), current-sense amplifier (x1), all operating from pack voltage without auxiliary supply. Use Value: Input voltage range extends to V– –0.3V enables direct connection to cell negatives; low IQ minimizes parasitic drain during sleep mode. |
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 |
|---|---|---|---|
| TLV2444IDR | Higher IQ (150µA/ch), lower GBW (600kHz), same TSSOP-14 package; no guaranteed operation below 2.7V. | Better speed but higher power; unsuitable for sub-2.7V coin-cell systems where OPA4243EA/2K5 operates down to 2.2V. | Select TLV2444IDR only when bandwidth >430kHz is required and supply ≥2.7V is assured. |
| LMV324IPWR | Lower cost, higher IQ (130µA/ch), narrower supply (2.7V–5.5V), rail-to-rail output only (not input). | Cannot accept rail-to-rail inputs - limits use in high-side sensing or direct battery monitoring without level-shifting. | Choose LMV324IPWR for cost-sensitive 3.3V-only applications where input common-mode range beyond rails is not needed. |
Compared with TLV2444IDR and LMV324IPWR, the OPA4243EA/2K5 uniquely combines 2.2V minimum operation, true rail-to-rail I/O, 45µA/ch IQ, and 140dB channel separation - making it the only option for ultra-low-power, wide-supply, multi-channel precision biasing in space-constrained portable systems.
Availability
OPA4243EA/2K5 is available at Aetrix Electronics and suitable for LCD display drivers, battery-powered portable instrumentation, and PCMCIA card analog interfaces requiring stable component supply across extended temperature and voltage ranges.
Supply support for OPA4243EA/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 (TI) is a global semiconductor leader delivering analog and embedded processing solutions, with deep expertise in precision amplifiers, power management, and signal chain technologies.
The OPA4243EA/2K5 belongs to TI's OPA precision op amp family, engineered specifically for micropower, wide-supply, high-density applications - including portable instrumentation, battery management, and LCD biasing where space, power, and accuracy are simultaneously constrained.
FAQ
What is the minimum supply voltage for reliable operation of the OPA4243EA/2K5?
The OPA4243EA/2K5 is specified to operate down to 2.2V single supply (±1.1V dual), with full functionality including rail-to-rail input/output swing and 430kHz bandwidth confirmed at 2.6V and above. At 2.2V, key parameters such as quiescent current (45µA/ch) and output swing remain functional, though bandwidth reduces slightly - verified across –40°C to +85°C per datasheet Section 2.
Does the OPA4243EA/2K5 support rail-to-rail input and output simultaneously?
Yes, the OPA4243EA/2K5 supports true rail-to-rail input (common-mode range from V– –0.3V to V+ +0.3V) and rail-to-rail output (within 0.2V of V– and V+ with 20kΩ load). This dual capability enables direct interfacing with ADCs, DACs, and sensors operating at the supply extremes - critical for single-supply 3.3V or 5V systems without level-shifting.
How does channel separation performance impact multi-channel designs using the OPA4243EA/2K5?
The OPA4243EA/2K5 guarantees 140dB channel separation at 1kHz, achieved via fully independent per-channel circuitry. In practice, this means less than 1µV of crosstalk between any two channels driving 20kΩ loads - enabling simultaneous use for high-precision sensor readout and reference buffering without signal contamination, even under overload conditions.
Can the OPA4243EA/2K5 drive capacitive loads, and what is the maximum stable value?
The OPA4243EA/2K5 can drive capacitive loads up to 100pF while maintaining <10% overshoot in small-signal step response (G = +1, RL = 20kΩ), per Figure 23 in the datasheet. For larger loads, a series resistor (≥100Ω) at the output is recommended to preserve phase margin - especially critical in LCD bias and filter applications where stability is non-negotiable.
Is the OPA4243EA/2K5 suitable for automotive cabin temperature applications?
Yes - while the OPA4243EA/2K5 is specified over –40°C to +85°C, its electrical performance is validated across –55°C to +125°C in typical curves (Figures 10–12, 15–16). This extended operating range meets AEC-Q100 Grade 3 requirements for cabin ambient use, provided board-level thermal design keeps junction temperature ≤150°C.
OPA4243EA/2K5 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:
- Active
- 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/2K5 FAQ
1.How can I place an order for OPA4243EA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4243EA/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 OPA4243EA/2K5 reliable?
The price and inventory of OPA4243EA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4243EA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA4243EA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4243EA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4243EA/2K5?
OPA4243EA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4243EA/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 OPA4243EA/2K5?
For technical support, including OPA4243EA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4243EA/2K5 requirements.
6.How does Aetrix verify that OPA4243EA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA4243EA/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 OPA4243EA/2K5 meets industry standards.
7.What is the process for return or replacement of OPA4243EA/2K5?
All OPA4243EA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4243EA/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 OPA4243EA/2K5 part is unused and in its original packaging.
Return procedure for OPA4243EA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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