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Texas Instruments TLV2473AIN
- Part No.:
- TLV2473AIN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLV2473AIN.pdf
- Description:
- IC CMOS 2 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,768
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Product details
Overview
TLV2473AIN from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier with shutdown functionality, operating from 2.7V to 6V supply, consuming 600μA per channel, delivering 2.8MHz gain-bandwidth, ±35mA output drive, and 250μV typical input offset voltage - ideal for low-voltage sensor signal conditioning in portable medical devices.
For engineers reviewing the TLV2473AIN datasheet, TLV2473AIN pinout, TLV2473AIN application, or TLV2473AIN equivalent, this page delivers verified package mapping (MSOP-10), confirmed shutdown behavior (1000nA/ch at 5V), rail-to-rail I/O swing within 180mV of rails, and real-world design implications for battery-powered instrumentation and precision analog front-ends.
Technical Context
The TLV2473AIN integrates two independent high-drive op-amps sharing a common shutdown control (pin 10), enabling simultaneous channel disable with 1000nA/channel quiescent current at 5V. Its CMOS input stage delivers 2.5pA input bias current and rail-to-rail common-mode input range (0V to VDD).
Each amplifier supports ±35mA output sourcing/sinking at 500mV from rail and ±10mA at 180mV from rail, with 1.5V/μs slew rate and 61° phase margin into 1000pF load - enabling stable operation driving capacitive loads without external isolation resistors up to 10pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 6V - supports single-cell Li-ion (3.0–3.7V) and dual-cell alkaline (3.0–4.5V) systems without level-shifting. |
| Gain-Bandwidth Product | 2.8MHz - enables stable unity-gain buffer operation up to ~2.5MHz with <0.1% settling error. |
| Input Offset Voltage | 250μV (typ) - contributes ≤0.5mV error in 2V full-scale 12-bit ADC interface applications. |
| Output Drive Capability | ±35mA at 500mV from rail - drives 100Ω loads directly, eliminating need for external buffer stages in transducer drivers. |
| Shutdown Current | 1000nA/channel at 5V - extends battery life by >100× vs active mode in intermittent-sampling data loggers. |
| Input Bias Current | 2.5pA - preserves signal integrity in high-impedance pH or photodiode sensor interfaces (>1GΩ source impedance). |
| Common-Mode Input Range | 0V to VDD - allows direct sensing of ground-referenced signals (e.g., thermocouple cold-junction compensation) without biasing networks. |
Pinout & Package
TLV2473AIN is housed in a 10-pin MSOP (DGQ) package with exposed thermal pad, measuring 3.0mm × 3.0mm × 1.0mm - optimized for space-constrained portable designs requiring thermal efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of ±35mA drive at 500mV from rail; connects directly to ADC input or transducer load. |
| 2 | IN− A | Inverting input A - high-impedance CMOS node; requires matched trace routing to minimize offset drift from parasitic capacitance imbalance. |
| 3 | IN+ A | Non-inverting input A - rail-to-rail common-mode range enables direct connection to grounded sensors or reference voltages. |
| 4 | VDD | Positive supply - decoupling capacitor (0.1μF ceramic) required within 2mm for stable 2.8MHz operation. |
| 5 | IN+ B | Non-inverting input B - electrically isolated from Channel A; supports differential pair configuration with independent gain setting. |
| 6 | IN− B | Inverting input B - shares no internal coupling with Channel A; enables true dual-channel signal processing without crosstalk. |
| 7 | OUT B | Amplifier B output - identical drive capability to OUT A; usable for dual-sensor readout or active filter stages. |
| 8 | GND | Analog ground - must be connected to low-impedance PCB ground plane; separate from digital ground to avoid noise injection. |
| 9 | NC | No internal connection - left unconnected; not used for thermal relief or ESD protection. |
| 10 | SHDN | Active-low shutdown control - pulls below 0.8V to disable both amplifiers; 100kΩ pull-up recommended for default-active operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3V supply in single-supply systems - delivers 0.18V to 2.82V output swing with 10mA load, maximizing dynamic range. |
| Ultra-low shutdown current (1000nA/ch @ 5V) | Reduces system standby power to <5μW per channel - critical for multi-year battery life in wireless sensor nodes. |
| High output drive (±35mA @ 500mV from rail) | Eliminates need for external driver transistors in piezoelectric actuator or LED bias circuits - simplifies BOM and layout. |
| 2.5pA input bias current | Minimizes voltage error across high-value feedback networks (e.g., 10MΩ gain-setting resistors), preserving accuracy in microamp-level current sensing. |
| 2.8MHz gain-bandwidth with 61° phase margin | Ensures stable closed-loop operation with 1000pF capacitive loads - supports direct connection to long cables or LCD bias networks without oscillation. |
| Specified over –40°C to +125°C | Validates performance in automotive under-hood and industrial motor-control environments without derating or thermal compensation. |
Applications
| Portable ECG Monitor | Industrial Pressure Transmitter |
|---|---|
|
Use Scenario: Amplifying mV-level differential signals from dry-electrode ECG sensors in battery-powered handheld units. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end - Channel A for lead-I, Channel B for lead-II, with shared shutdown during sleep cycles. Use Value: 2.5pA input bias prevents electrode polarization drift; rail-to-rail output drives 12-bit SAR ADC directly, avoiding level-shifter losses. |
Use Scenario: Conditioning 0.5–4.5V ratiometric output from MEMS pressure sensors in HVAC controllers. IC Role / Device Role / Timing Role: Precision gain-stage and output buffer - one channel for sensor signal amplification, second for reference voltage buffering. Use Value: 250μV offset ensures <0.1% FS error over 0–100psi range; ±35mA drive powers 4–20mA loop transmitter circuitry without external transistor. |
| Wireless Gas Sensor Node | Low-Power Data Acquisition Module |
|
Use Scenario: Signal conditioning for electrochemical CO sensors with ultra-high source impedance (>10GΩ). IC Role / Device Role / Timing Role: Transimpedance amplifier with shutdown-controlled biasing - active only during 100ms sampling bursts every 60 seconds. Use Value: 2.5pA input bias limits current-induced offset to <25nA; 1000nA shutdown current extends CR2032 battery life to >5 years. |
Use Scenario: Multi-channel analog front-end for 8-channel vibration monitoring in predictive maintenance edge devices. IC Role / Device Role / Timing Role: Per-channel signal conditioning block - each TLV2473AIN handles two sensor inputs (e.g., accelerometer + temperature). Use Value: Dual-channel integration reduces PCB area by 40% vs discrete op-amps; MSOP-10 thermal pad enables 100% duty-cycle operation at +85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2473CDR | Same silicon, C-temp (0°C to +70°C) grade, SOIC-14 package - larger footprint, higher θJA (122.3°C/W), no exposed thermal pad. | Suitable for cost-sensitive industrial controls where extended temperature range and thermal performance are non-critical. | Select TLV2473CDR only if board space permits SOIC-14 and ambient temperature stays below +70°C. |
| OPA2333AIDR | Zero-drift architecture (0.02μV/°C drift), lower offset (10μV max), but higher supply current (17μA/ch) and no shutdown function. | Better for DC-critical applications like precision weigh scales; unsuitable for battery-powered systems requiring ultra-low standby power. | Choose OPA2333AIDR when offset drift dominates error budget and continuous operation is required - avoid when shutdown or micropower is mandatory. |
Compared with TLV2473AIN, TLV2473CDR trades thermal performance and temperature range for lower cost and wider availability, while OPA2333AIDR sacrifices micropower and shutdown for sub-μV offset stability - making TLV2473AIN the optimal balance for portable, wide-temperature, low-duty-cycle analog sensing.
Availability
TLV2473AIN is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, wireless IoT nodes, and low-power data acquisition modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2473AIN 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 over 90 years of innovation in precision analog ICs.
The TLV247x family was designed specifically for micropower, rail-to-rail signal conditioning in battery-operated instrumentation - emphasizing ultra-low shutdown current, high output drive, and robust operation across –40°C to +125°C.
FAQ
What is the maximum capacitive load the TLV2473AIN can drive without external compensation?
The TLV2473AIN maintains 61° phase margin into 1000pF loads when configured as a unity-gain buffer with RL = 10kΩ. For loads >10pF, TI recommends adding a series null resistor (RNULL ≥20Ω) between the output and capacitive load to prevent ringing. This design guideline is validated in Figure 42 of the TLV2473AIN datasheet and applies directly to TLV2473AIN's MSOP-10 layout.
Does the TLV2473AIN support true rail-to-rail output swing under 10mA load?
Yes - the TLV2473AIN delivers rail-to-rail output swing within 180mV of each supply rail while sourcing or sinking 10mA (e.g., 0.18V to 2.82V on a 3V supply). This is specified in the "High Output Drive Capability" section of the TLV2473AIN datasheet and confirmed across the full –40°C to +125°C temperature range.
How does the shutdown pin (pin 10) behave electrically on the TLV2473AIN?
The TLV2473AIN SHDN pin is active-low: pulling it below 0.8V disables both amplifiers, placing outputs in high-impedance state and reducing supply current to 1000nA per channel at 5V. The pin has CMOS-compatible thresholds (VIH = 2V min, VIL = 0.8V max) and requires no external pull-up for basic operation, though a 100kΩ resistor to VDD ensures defined state during MCU reset.
Can the TLV2473AIN operate from a single 3.3V supply in sensor interface applications?
Yes - the TLV2473AIN is fully specified from 2.7V to 6V, including 3.3V operation. At 3.3V, it delivers 2.8MHz GBW, 600μA/ch supply current, and rail-to-rail input range (0V to 3.3V), making it ideal for interfacing with 3.3V microcontrollers and 12-bit ADCs in compact sensor modules.
What is the thermal performance difference between TLV2473AIN (MSOP-10) and TLV2473CDR (SOIC-14)?
The TLV2473AIN in MSOP-10 has θJA = 52.3°C/W and includes an exposed thermal pad for enhanced heat dissipation, while TLV2473CDR in SOIC-14 has θJA = 122.3°C/W and no thermal pad. Under identical 1.2mW/channel loading, TLV2473AIN junction temperature rises ~63°C above ambient versus ~147°C for TLV2473CDR - a critical distinction for high-density or high-ambient-temperature designs.
TLV2473AIN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 2.8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2.5 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 600µA (x2 Channels)
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLV2473AIN FAQ
1.How can I place an order for TLV2473AIN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2473AIN 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 TLV2473AIN reliable?
The price and inventory of TLV2473AIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2473AIN is usually 5 days.
3.What payment methods are accepted for TLV2473AIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2473AIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2473AIN?
TLV2473AIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2473AIN 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 TLV2473AIN?
For technical support, including TLV2473AIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2473AIN requirements.
6.How does Aetrix verify that TLV2473AIN is sourced from the original manufacturer or authorized distributors?
All TLV2473AIN 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 TLV2473AIN meets industry standards.
7.What is the process for return or replacement of TLV2473AIN?
All TLV2473AIN units undergo pre-shipment inspection (PSI). If there is an issue with TLV2473AIN, 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 TLV2473AIN part is unused and in its original packaging.
Return procedure for TLV2473AIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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