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Texas Instruments TLV2422AMFKB
- Part No.:
- TLV2422AMFKB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 20-CLCC
- Datasheet:
-
TLV2422AMFKB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 20LCCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,029
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Product details
Overview
TLV2422AMFKB from Texas Instruments is a dual rail-to-rail output, micropower operational amplifier optimized for wide-input-voltage, low-noise signal conditioning in harsh-temperature environments. It delivers 950 µV max input offset voltage at 25°C, 1 pA typical input bias current, 50 µA per channel supply current, and rail-to-rail output swing with ±2.5 V to ±5 V (or 2.7–10 V single-supply) operation - enabling precision sensor interfacing in automotive Q-grade systems.
For engineers reviewing the TLV2422AMFKB datasheet, TLV2422AMFKB pinout, TLV2422AMFKB application, or TLV2422AMFKB equivalent, key selection criteria include its –55°C to 125°C extended temperature range, 18 nV/√Hz input voltage noise at 1 kHz, no phase inversion over rail-to-rail common-mode input, 600-Ω output drive capability, and qualification to automotive reliability standards.
Technical Context
The TLV2422AMFKB uses Advanced LinCMOS™ process technology to achieve ultra-low input bias current (1 pA typ) while maintaining rail-to-rail output swing and extended common-mode input range (0 V to 4.5 V min on 5-V supply). Its architecture avoids phase inversion when inputs approach supply rails - eliminating need for external clamping in high-impedance source applications like piezoelectric transducers.
It operates fully characterized from 2.7 V to 10 V supply, supports single- or split-supply configurations, and features 70 dB minimum CMRR and 80 dB minimum PSRR across its full operating temperature range (–55°C to 125°C), making it suitable for analog front-ends in automotive sensing and industrial monitoring where supply stability and input fidelity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct operation from Li-ion battery (3.0–3.7 V), 5-V logic rails, or regulated 9-V supplies without level-shifting. |
| Input Offset Voltage (max) | 950 µV at 25°C - ensures ≤1 mV total DC error in unity-gain buffer or low-gain sensor amplification stages. |
| Supply Current per Channel | 50 µA - allows continuous operation for >10 years on a single CR2032 coin cell in always-on remote sensors. |
| Input Bias Current (typ) | 1 pA - preserves signal integrity from high-impedance sources (>1 GΩ), such as pH electrodes or photodiode transimpedance nodes. |
| Output Drive Capability | 600-Ω load - supports direct driving of ADC reference buffers or telecom line drivers without external gain staging. |
| Input Voltage Noise (1 kHz) | 18 nV/√Hz - maintains SNR >80 dB for 20-bit ADCs sampling sub-mV biomedical or strain-gauge signals. |
| Common-Mode Input Range | 0 V to 4.5 V (min, 5-V supply) - accepts ground-referenced or rail-swinging inputs without clipping or phase reversal. |
Pinout & Package
TLV2422AMFKB is packaged in an 8-pin ceramic flatpack (FK) with metal lid, rated for –55°C to 125°C operation and qualified for high-reliability automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A (Amplifier A Output) | Rail-to-rail output capable of sourcing/sinking ±1 mA into 600-Ω loads; connects directly to ADC input or filter stage. |
| 2 | IN– A (Amplifier A Inverting Input) | High-impedance node (10¹² Ω) accepting feedback networks; sensitive to PCB leakage - requires guard ring in high-Z designs. |
| 3 | IN+ A (Amplifier A Non-Inverting Input) | Accepts common-mode voltages from 0 V to VDD–0.8 V; no phase inversion up to supply rails. |
| 4 | VDD– / GND | Power return for dual-supply operation or ground reference for single-supply; must be low-impedance path to minimize PSRR degradation. |
| 5 | VDD+ | Positive supply input (2.7–10 V); decoupling capacitor (0.1 µF ceramic) required within 5 mm for stable high-frequency performance. |
| 6 | OUT B (Amplifier B Output) | Independent rail-to-rail output; enables dual-channel signal conditioning (e.g., differential pair or active filter sections). |
| 7 | IN– B (Amplifier B Inverting Input) | Electrically identical to Pin 2; supports independent feedback configuration per channel. |
| 8 | IN+ B (Amplifier B Non-Inverting Input) | Electrically identical to Pin 3; allows simultaneous dual-sensor buffering or matched gain stages. |
Key Features
| Feature | Design Value |
|---|---|
| No phase inversion | Eliminates output discontinuity when common-mode input reaches supply rails - critical for closed-loop control and sensor saturation recovery. |
| Rail-to-rail output swing | Delivers full dynamic range (e.g., 0–5 V out on 5-V supply) to maximize ADC utilization and reduce gain error in precision measurement paths. |
| Extended temperature range | –55°C to 125°C operation validated per automotive Q-qual standards - supports under-hood, transmission, and brake module deployments. |
| Low input voltage noise | 18 nV/√Hz at 1 kHz enables accurate amplification of microvolt-level signals from thermopiles or bridge sensors without added noise floor. |
| Micropower consumption | 50 µA per channel allows integration into always-on subsystems (e.g., tire pressure monitors) with multi-year battery life. |
Applications
| Automotive Cabin Pressure Sensing | Industrial Thermocouple Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from absolute pressure transducers in HVAC control modules, operating continuously at ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end: one op-amp buffers reference voltage, the other performs gain/offset correction on sensor output. Use Value: 950 µV max VIO and 1 pA IIB prevent drift-induced calibration errors over 15-year vehicle lifetime; rail-to-rail output ensures full-scale ADC digitization. |
Use Scenario: Cold-junction compensation and linearization of K-type thermocouple outputs in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision voltage follower and low-pass filter driver feeding a 24-bit sigma-delta ADC, operating across –40°C to 70°C industrial ambient. Use Value: 0–4.5 V common-mode range accommodates thermocouple cold-junction voltage shifts; 18 nV/√Hz noise preserves <0.1°C resolution at 25°C. |
| Medical Wearable ECG Front-End | Remote Environmental Monitoring Node |
|
Use Scenario: Biopotential amplification in ultra-low-power ECG patches requiring >7-day battery life on a 3.6-V lithium-thionyl chloride cell. IC Role / Device Role / Timing Role: First-stage gain and filtering for dry-electrode signals; dual op-amps used for lead-I derivation and right-leg drive (RLD) generation. Use Value: 50 µA per channel supply current enables continuous acquisition; rail-to-rail output drives anti-aliasing filters without headroom loss. |
Use Scenario: Battery-powered soil moisture and temperature node deployed in unheated agricultural enclosures with seasonal extremes from –30°C to 60°C. IC Role / Device Role / Timing Role: Sensor excitation (constant-current source) and low-noise amplification of resistive/capacitive sensor bridges. Use Value: –55°C to 125°C rating ensures startup and operation at sub-zero winter temperatures; 1 pA IIB prevents leakage-induced offset in high-Z moisture probes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2422AQD | Same die, plastic SOIC-8 package; rated –40°C to 125°C (not –55°C); lower thermal resistance but non-hermetic. | Suitable for under-dash automotive modules where hermeticity is not mandated; not qualified for engine bay or transmission control units. | Select TLV2422AQD only if cost sensitivity outweighs requirement for military-grade temperature margin and ceramic hermetic sealing. |
| OPA2333AIDR | Zero-drift architecture; 0.1 µV/°C max drift vs. 2 µV/°C for TLV2422AMFKB; higher supply current (17 µA/channel) but superior long-term stability. | Better for precision weigh scales or medical diagnostics requiring <1 µV/h drift; less optimal for battery-limited field sensors due to 3.4× higher quiescent current. | Choose OPA2333AIDR when offset drift dominates error budget over power; TLV2422AMFKB remains preferred for micropower + extended temp combined requirements. |
Compared with TLV2422AQD and OPA2333AIDR, TLV2422AMFKB uniquely balances –55°C start-up capability, ceramic hermetic reliability, 50 µA/channel consumption, and 950 µV VIO - making it the only option qualified for safety-critical automotive subsystems demanding both extreme cold tolerance and long-term parametric stability.
Availability
TLV2422AMFKB is available at Aetrix Electronics and suitable for automotive cabin control, industrial PLC analog I/O, medical wearable monitoring, and remote environmental sensing applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLV2422AMFKB 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 automotive-qualified product development and manufacturing excellence.
The TLV2422AMFKB belongs to TI's Advanced LinCMOS™ precision op-amp family, engineered specifically for low-power, high-reliability signal conditioning in automotive, industrial, and medical systems operating across extreme ambient temperatures.
FAQ
What is the maximum operating temperature range for TLV2422AMFKB?
The TLV2422AMFKB is rated for continuous operation from –55°C to 125°C, meeting Q-grade automotive qualification requirements. This extended range is enabled by its ceramic FK package and internal design validation across that full span - unlike commercial-grade variants (e.g., TLV2422CD) limited to 0°C–70°C.
Does TLV2422AMFKB support true rail-to-rail input?
No - TLV2422AMFKB provides rail-to-rail *output* swing but has an extended common-mode input range (0 V to VDD–0.8 V), not full rail-to-rail input. However, it exhibits no phase inversion when inputs reach either supply rail, which eliminates a key limitation of standard CMOS op-amps and simplifies design in rail-swinging applications.
Can TLV2422AMFKB drive a 10-kΩ load with rail-to-rail output?
Yes - TLV2422AMFKB maintains rail-to-rail output swing into 10-kΩ loads at room temperature. Its 600-Ω drive specification refers to guaranteed performance under heavier loading (e.g., 1 mA sink/source); lighter loads like 10-kΩ preserve full swing with minimal distortion and settling time impact.
Is TLV2422AMFKB pin-compatible with other TLV2422 variants?
Yes - all TLV2422x variants (including TLV2422AMFKB, TLV2422AQD, TLV2422AIPWLE) share identical 8-pin functional pinouts across FK, SOIC, TSSOP, and ceramic DIP packages. The FK package (TLV2422AMFKB) uses the same pin 1–8 assignment as shown in the datasheet top-view diagram: OUT A, IN– A, IN+ A, VDD–/GND, VDD+, OUT B, IN– B, IN+ B.
What is the typical input voltage noise density of TLV2422AMFKB at 1 kHz?
The typical input voltage noise density of TLV2422AMFKB is 18 nV/√Hz at 1 kHz and 5-V supply, as confirmed in the "Electrical Characteristics" table on page 12 of the SLOS199C datasheet. This value is consistent across TLV2422A-grade devices and is measured under standard conditions (TA = 25°C, RL = 10 kΩ, CL = 100 pF).
TLV2422AMFKB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 20-CLCC
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.02V/µs
- Gain Bandwidth Product:
- 5.3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 100µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-LCCC (8.89x8.89)
TLV2422AMFKB FAQ
1.How can I place an order for TLV2422AMFKB through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2422AMFKB 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 TLV2422AMFKB reliable?
The price and inventory of TLV2422AMFKB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2422AMFKB is usually 5 days.
3.What payment methods are accepted for TLV2422AMFKB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2422AMFKB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2422AMFKB?
TLV2422AMFKB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2422AMFKB 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 TLV2422AMFKB?
For technical support, including TLV2422AMFKB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2422AMFKB requirements.
6.How does Aetrix verify that TLV2422AMFKB is sourced from the original manufacturer or authorized distributors?
All TLV2422AMFKB 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 TLV2422AMFKB meets industry standards.
7.What is the process for return or replacement of TLV2422AMFKB?
All TLV2422AMFKB units undergo pre-shipment inspection (PSI). If there is an issue with TLV2422AMFKB, 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 TLV2422AMFKB part is unused and in its original packaging.
Return procedure for TLV2422AMFKB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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