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Texas Instruments TLV2473AID
- Part No.:
- TLV2473AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2473AID.pdf
- Description:
- IC CMOS 2 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,663
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Product details
Overview
TLV2473AID 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 at 500mV from rail, and 250μV typical input offset voltage - used in portable medical sensors and low-voltage data acquisition front-ends.
For engineers reviewing the TLV2473AID datasheet, TLV2473AID pinout, TLV2473AID application, or TLV2473AID equivalent, this page delivers verified electrical parameters, MSOP-10 package layout, rail-to-rail I/O behavior under load, shutdown current specs at 3V/5V, and real-world alternatives for battery-powered signal conditioning designs.
Technical Context
The TLV2473AID integrates two independent high-drive op-amps with complementary CMOS input stages enabling rail-to-rail common-mode input range (0V to VDD) and rail-to-rail output swing (within 180mV of rails at ±10mA). Its shutdown control (SHDN) places outputs in high-impedance state while reducing supply current to 350nA/channel at 3V or 1000nA/channel at 5V.
Designed for single-supply operation, it achieves 2.8MHz unity-gain bandwidth with 1.5V/μs slew rate, supports ±35mA sourcing/sinking at 500mV from rail, and maintains stability driving capacitive loads ≥10pF when using series nulling resistor (RNULL ≥20Ω), as specified in TI's application guidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 6V - enables direct use with Li-ion (3.0–4.2V), 3.3V logic, and 5V systems without level-shifting. |
| Gain-Bandwidth Product | 2.8MHz - supports stable closed-loop gain up to ~28 at 100kHz for sensor amplification with adequate phase margin. |
| Input Offset Voltage | 250μV (typ) - ensures ≤0.5mV error in 2V full-scale 12-bit ADC interfaces without trimming. |
| Output Drive Capability | ±35mA at 500mV from rail - drives 100Ω loads directly, eliminating external buffers in transducer driver stages. |
| Shutdown Supply Current | 350nA/ch at 3V - extends battery life >10 years in intermittent-sampling IoT nodes with duty-cycled amplification. |
| Input Bias Current | 2.5pA (typ) - preserves signal integrity in high-impedance pH/electrochemical sensor front-ends (>1GΩ source impedance). |
| Common-Mode Input Range | 0V to VDD - allows direct interfacing with unipolar sensors (e.g., thermistors, RTDs with bias) without level-shifting circuitry. |
Pinout & Package
TLV2473AID 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 instrumentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Inverting-stage output - delivers rail-to-rail signal to downstream ADC or filter; high-impedance during SHDN. |
| 2 | IN−1 | Inverting input - connects to feedback network; accepts signals from 0V to VDD with minimal error. |
| 3 | IN+1 | Non-inverting input - interfaces directly with high-Z sensors; bias current <3pA minimizes loading error. |
| 4 | VDD | Positive supply - powers both channels; decoupling capacitor required within 5mm for stability. |
| 5 | IN+2 | Non-inverting input (Ch2) - electrically isolated from Ch1; enables dual-sensor simultaneous sampling. |
| 6 | IN−2 | Inverting input (Ch2) - supports independent gain configuration per channel without crosstalk. |
| 7 | OUT2 | Output (Ch2) - identical performance to OUT1; shares VDD/GND but has separate internal biasing. |
| 8 | GND | Analog ground - must be star-connected to system AGND; separates noise-sensitive analog return paths. |
| 9 | SHDN | Active-low shutdown control - driven to GND to disable both amps; pulled high via ≥10kΩ to VDD for normal operation. |
| 10 | NC | No internal connection - left floating or tied to GND for mechanical stability; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 3.3V systems: input accepts 0–3.3V, output swings 0.18–3.12V at ±10mA. |
| Ultra-low shutdown current | 350nA/channel at 3V allows >10-year battery life in wake-on-event sensor nodes with 1-second sampling interval. |
| High output drive | ±35mA capability eliminates need for external buffer when driving 100Ω transmission lines or SAR ADC reference buffers. |
| Low input bias current | 2.5pA typical permits accurate amplification of signals from glass pH electrodes or piezoresistive pressure sensors. |
| Stable with capacitive loads | Phase margin >61° with 1000pF load (RL=10kΩ) enables direct connection to long PCB traces or LCD bias networks. |
| Wide supply range | 2.7–6V operation supports direct integration into legacy 5V industrial modules and modern 3.3V portable devices. |
Applications
| Portable ECG Front-End | Industrial Temperature Transmitter |
|---|---|
|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in battery-powered wearable ECG monitors. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end: Ch1 for lead-I differential sensing, Ch2 for right-leg drive (RLD) feedback generation. Use Value: 2.5pA input bias prevents electrode polarization drift; rail-to-rail output drives 12-bit SAR ADC directly; 350nA shutdown extends coin-cell life beyond 2 years. |
Use Scenario: Conditioning 4–20mA loop-powered RTD or thermocouple signals in hazardous-area temperature transmitters. IC Role / Device Role / Timing Role: Precision voltage-to-current converter input stage and loop-driver output buffer. Use Value: 250μV offset ensures <0.1°C error in Pt100 measurements; ±35mA drive sustains 4–20mA compliance over 1kΩ loop impedance; 2.7V min supply enables operation down to depleted 3.2V LiFePO₄ cells. |
| Handheld Gas Detector Signal Chain | Low-Power Data Logger Analog Front-End |
|
Use Scenario: Amplifying low-current outputs from electrochemical gas sensors (e.g., CO, NO₂) in portable safety instruments. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) for sensor current-to-voltage conversion and anti-aliasing filtering. Use Value: 2.5pA bias current avoids TIA gain error in 10⁹Ω feedback configurations; shutdown mode reduces quiescent power to <1μW during sleep cycles. |
Use Scenario: Multi-channel sensor aggregation in solar-powered environmental monitoring stations logging temperature, humidity, and light intensity. IC Role / Device Role / Timing Role: Multiplexed analog signal conditioner: one TLV2473AID handles three sensor types via shared VDD/GND and independent IN+/IN− pairs. Use Value: Dual-channel architecture reduces BOM count vs. discrete singles; 600μA/ch active current enables >6-month runtime on 2000mAh Li-ion with 1-minute sampling interval. |
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 |
|---|---|---|---|
| TLV2473CDGQ | Same MSOP-10 package and pinout, but rated for 0°C to +70°C (vs. –40°C to +125°C for TLV2473AID); 250μV max VIO (vs. 2000μV max for A-grade at full temp range). | Suitable for commercial-grade portable electronics; not qualified for automotive or industrial ambient extremes. | Select TLV2473CDGQ only if operating temperature stays within 0–70°C and tighter initial offset is prioritized over extended temp reliability. |
| OPA2333AIDRGT | Zero-drift architecture (0.02μV/°C drift vs. 0.4μV/°C for TLV2473AID); lower 1/f noise; but higher 17μA supply current and no shutdown function. | Better for DC-precision applications like weigh scales; unsuitable where ultra-low shutdown current or battery longevity is critical. | Choose OPA2333AIDRGT when long-term offset stability dominates over power budget; avoid when shutdown capability or sub-μA sleep current is mandatory. |
Compared with TLV2473CDGQ, TLV2473AID provides guaranteed performance across –40°C to +125°C and superior long-term reliability in harsh environments, while OPA2333AIDRGT trades 28× higher active current for nanovolt-level drift control - making TLV2473AID optimal for wide-temp, low-power, non-zero-drift signal chains.
Availability
TLV2473AID is available at Aetrix Electronics and suitable for portable medical devices, industrial temperature transmitters, handheld gas detectors, and low-power data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2473AID 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 and power management solutions.
The TLV247x family was engineered for ultra-low-power, rail-to-rail signal conditioning in battery-operated instrumentation - balancing micropower consumption (600μA/ch), usable bandwidth (2.8MHz), and robust output drive (±35mA) where legacy op-amps forced design trade-offs.
FAQ
What is the maximum capacitive load the TLV2473AID can drive without oscillation?
The TLV2473AID maintains ≥61° phase margin with 1000pF capacitive load when configured with RL = 10kΩ, as verified in TI's SLOS232E datasheet Figure 18. For loads >10pF, TI recommends adding a series nulling resistor (RNULL ≥20Ω) between the output and capacitive node to preserve stability - a requirement confirmed in the "Driving a Capacitive Load" application note (Figure 42) of the TLV2473AID datasheet.
Does the TLV2473AID support true rail-to-rail output swing under 10mA load?
Yes, the TLV2473AID delivers rail-to-rail output swing within 180mV of each supply rail while sourcing or sinking ±10mA, as specified in the "High Output Drive Capability" section of the TLV2473AID datasheet (SLOS232E, p.1). At ±35mA, output swing degrades to within 500mV of rails - confirmed by VOH/VOL test conditions across 3V and 5V supplies in Tables 1 and 2.
What is the shutdown logic polarity and voltage threshold for TLV2473AID?
The TLV2473AID features active-low shutdown: pulling SHDN pin ≤0.8V (VIL) disables both amplifiers, placing outputs in high-impedance state and reducing supply current to 350nA/channel at 3V. Driving SHDN ≥2.0V (VIH) enables normal operation. This threshold is defined in the "Shutdown on/off voltage level" row of the Recommended Operating Conditions table (p.4, SLOS232E).
Can TLV2473AID operate from a single 2.7V supply while maintaining 2.8MHz bandwidth?
Yes, the TLV2473AID is fully specified at 2.7V supply, with guaranteed 2.8MHz gain-bandwidth product across –40°C to +125°C, as stated in the "Gain-bandwidth product" parameter (p.5, SLOS232E) and confirmed in Figure 22 ("Gain-Bandwidth Product vs Supply Voltage") showing flat 2.8MHz response from 2.7V to 6V at +25°C.
How does the input offset voltage of TLV2473AID vary over temperature?
The TLV2473AID has a temperature coefficient of input offset voltage (αVIO) of 0.4μV/°C, as specified in the Electrical Characteristics tables (p.4 and p.6, SLOS232E). Over the full –40°C to +125°C range, this results in ≤66μV additional drift beyond the 250μV typical room-temperature offset - a value validated in the "Input Offset Voltage vs Common-Mode Input Voltage" curves (Figures 1–2) and thermal drift characterization.
TLV2473AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLV2473AID FAQ
1.How can I place an order for TLV2473AID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2473AID 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 TLV2473AID reliable?
The price and inventory of TLV2473AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2473AID is usually 5 days.
3.What payment methods are accepted for TLV2473AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2473AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2473AID?
TLV2473AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2473AID 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 TLV2473AID?
For technical support, including TLV2473AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2473AID requirements.
6.How does Aetrix verify that TLV2473AID is sourced from the original manufacturer or authorized distributors?
All TLV2473AID 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 TLV2473AID meets industry standards.
7.What is the process for return or replacement of TLV2473AID?
All TLV2473AID units undergo pre-shipment inspection (PSI). If there is an issue with TLV2473AID, 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 TLV2473AID part is unused and in its original packaging.
Return procedure for TLV2473AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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