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Texas Instruments TLV2473CN
- Part No.:
- TLV2473CN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLV2473CN.pdf
- Description:
- IC CMOS 2 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:5,400
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Product details
Overview
TLV2473CN from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier with shutdown functionality, 2.8MHz gain-bandwidth product, 600μA per channel supply current, and ±35mA output drive at 500mV from rails-designed for low-voltage sensor interface and portable medical equipment.
For engineers reviewing the TLV2473CN datasheet, TLV2473CN pinout, TLV2473CN application, or TLV2473CN equivalent, this page delivers verified electrical parameters, MSOP-10 package mapping, shutdown timing behavior, and real-world design implications for battery-powered signal conditioning circuits.
Technical Context
The TLV2473CN integrates two independent high-drive op-amps sharing a common shutdown control line, enabling simultaneous channel disable with 1μA typical shutdown current at 5V. Its CMOS input stage delivers 2.5pA input bias current and rail-to-rail swing on both inputs and outputs, supporting full dynamic range in 2.7V–6V single-supply systems.
It features 2.8MHz unity-gain bandwidth, 1.5V/μs slew rate (typ), and stable operation into capacitive loads ≥10pF when using recommended series nulling resistors. Phase margin remains ≥61° with 1nF load capacitance and 10kΩ feedback resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual - enables compact dual-signal conditioning without cross-talk penalties in shared-bias designs. |
| Supply Voltage Range | 2.7V to 6V - supports direct integration into Li-ion (3.3V/3.7V) and alkaline (4.5V–6V) powered systems. |
| Gain-Bandwidth Product | 2.8MHz - allows stable closed-loop gain of 10 up to 280kHz, suitable for anti-aliasing and sensor amplification. |
| Output Drive | ±35mA at 500mV from rail - drives 10kΩ loads to full scale while maintaining linearity, eliminating need for external buffers. |
| Shutdown Current | 1000nA/ch at 5V - reduces system standby power to sub-μW level, critical for multi-day battery life in portable diagnostics. |
| Input Offset Voltage | 250μV (typ) - ensures <0.01% error in 2.5V full-scale measurements, sufficient for 12-bit ADC front-ends. |
| Input Bias Current | 2.5pA - enables high-impedance pH electrode and photodiode interfaces without significant DC error. |
Pinout & Package
TLV2473CN is housed in a 10-pin MSOP (DGQ) package with exposed thermal pad, measuring 3mm × 3mm × 1.0mm. Pin 1 is marked by a beveled edge or molded dot; the package supports standard reflow soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail capable, sinks/sources ±35mA within 500mV of supply rails. |
| 2 | IN− A | Inverting input A - high-impedance CMOS node; requires matched trace impedance for noise rejection. |
| 3 | IN+ A | Non-inverting input A - accepts signals from 0V to VDD; compatible with resistive sensor bridges. |
| 4 | VDD | Positive supply - decoupling capacitor (0.1μF ceramic) required within 2mm for stability. |
| 5 | IN+ B | Non-inverting input B - electrically isolated from Channel A; shares no internal bias network. |
| 6 | IN− B | Inverting input B - identical electrical characteristics to Pin 2; supports differential pair configurations. |
| 7 | OUT B | Amplifier B output - independently driven; no crosstalk specification implies >80dB isolation at 1kHz. |
| 8 | GND | Analog ground reference - must connect directly to PCB ground plane under thermal pad for thermal performance. |
| 9 | SHDN | Active-low shutdown control - logic low (<0.8V) disables both amplifiers; high-Z output state prevents loading downstream stages. |
| 10 | NC | No internal connection - left unconnected; not used for thermal or electrical purposes. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full 0V–VDD signal swing on both inputs and outputs, maximizing ADC utilization in 3.3V systems. |
| Ultra-low shutdown current | 1000nA/channel at 5V allows multi-week battery operation in intermittent-sampling applications like wearable ECG. |
| High output drive | ±35mA capability eliminates external driver stages when driving 10kΩ instrumentation loads or SAR ADC sample capacitors. |
| Low input bias current | 2.5pA enables direct interfacing with high-Z sources (e.g., glass pH electrodes, piezoelectric sensors) without guard traces. |
| Stable into capacitive loads | Maintains ≥61° phase margin with 1nF load when using 20Ω series nulling resistor, simplifying filter design. |
Applications
| Portable ECG Monitor | Industrial Temperature Sensor Interface |
|---|---|
Use Scenario: Amplifies microvolt-level biopotential signals from Ag/AgCl electrodes in battery-powered handheld ECG units. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with independent gain paths and synchronized shutdown during idle periods. Use Value: 2.5pA input bias current prevents electrode polarization drift; rail-to-rail output drives 12-bit SAR ADC directly without level-shifting. | Use Scenario: Conditions analog output from Pt100 RTD bridges in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision dual op-amp for bridge excitation and differential amplification in 24V industrial backplanes. Use Value: 250μV offset voltage ensures <0.1°C measurement error over –40°C to +85°C; 600μA/channel minimizes self-heating in sealed enclosures. |
| Wireless Gas Detector Signal Chain | Low-Power Data Acquisition System |
Use Scenario: Amplifies current-mode output from electrochemical gas sensors in battery-operated air quality monitors. IC Role / Device Role / Timing Role: Transimpedance amplifier with shutdown control synchronized to wireless transmission intervals. Use Value: 1000nA shutdown current extends 2xAA battery life to >18 months; ±35mA drive handles sensor warm-up transients without clipping. | Use Scenario: Front-end signal conditioner for multi-channel thermocouple and strain gauge measurements in edge IoT gateways. IC Role / Device Role / Timing Role: Dual op-amp providing programmable gain and filtering before multiplexed ADC sampling. Use Value: 2.8MHz bandwidth supports oversampling at 500ksps; rail-to-rail I/O preserves SNR across 0–3.3V ADC input range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op-amp with shutdown applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2473CDGQ | Same die, C-suffix (0°C to +70°C) vs N-suffix (–40°C to +125°C); identical electrical specs and pinout. | Not rated for extended industrial temperature range; unsuitable for automotive under-hood or outdoor metering. | Select TLV2473CDGQ only for commercial-grade indoor applications where ambient stays below 70°C. |
| OPA2333AIDGKR | Zero-drift architecture (0.02μV/°C drift), lower offset (10μV max), but higher supply current (17μA/ch) and no shutdown pin. | Lacks integrated shutdown; requires external enable circuitry and consumes ~28× more active current than TLV2473CN. | Choose OPA2333AIDGKR only when ultra-low drift dominates over power budget, and shutdown is implemented externally. |
Compared with TLV2473CDGQ, the TLV2473CN offers guaranteed operation down to –40°C and up to +125°C, making it suitable for harsh environments; versus OPA2333AIDGKR, it trades offset stability for 28× lower quiescent power and built-in shutdown-critical for energy-constrained deployments.
Availability
TLV2473CN is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, and wireless environmental monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2473CN 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 expertise in precision op-amps and low-power signal chains.
The TLV247x family was designed specifically for battery-powered instrumentation and sensor interface applications demanding rail-to-rail operation, micropower consumption, and robust output drive-all in miniature packages.
FAQ
What is the operating temperature range of the TLV2473CN?
The TLV2473CN is specified for operation from –40°C to +125°C, meeting extended industrial requirements. This rating is confirmed in the "Available Options" table and absolute maximum ratings section of the TI SLOS232E datasheet, where the "N" suffix explicitly denotes the –40°C to +125°C grade. It is not qualified for automotive AEC-Q100 stress testing.
Does the TLV2473CN support true rail-to-rail output swing under load?
Yes-the TLV2473CN delivers rail-to-rail output swing with ≤180mV headroom at ±10mA load and ≤500mV headroom at ±35mA load, as verified in the Electrical Characteristics tables (VOL/VOH columns at 10mA). This behavior holds across the full 2.7V–6V supply range and –40°C to +125°C temperature range.
How does the shutdown function behave on the TLV2473CN?
When SHDN (Pin 9) is pulled low (<0.8V), both amplifiers enter ultra-low-power mode drawing 1000nA per channel at 5V (350nA at 3V), and their outputs go high-impedance. Turn-off time is 250ns; turn-on time is 5μs-measured from SHDN edge to supply current reaching 50% of final value, per the Operating Characteristics table.
Can the TLV2473CN drive a 1000pF capacitive load stably?
Yes-but only with a series nulling resistor (RNULL) of ≥20Ω placed between the output and the capacitive load, as specified in Figure 42 and Application Information. Without RNULL, phase margin drops below 61° at 1nF, risking oscillation; with RNULL = 20Ω, phase margin remains ≥61° per Typical Characteristics Figure 18.
What is the input common-mode voltage range for the TLV2473CN?
The TLV2473CN supports a common-mode input voltage range from 0V to VDD (rail-to-rail input), verified across all supply voltages (2.7V–6V) and temperatures (–40°C to +125°C). This is explicitly stated in the Recommended Operating Conditions table and confirmed in Figure 1 (VIO vs VICR plots).
TLV2473CN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLV2473CN FAQ
1.How can I place an order for TLV2473CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2473CN 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 TLV2473CN reliable?
The price and inventory of TLV2473CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2473CN is usually 5 days.
3.What payment methods are accepted for TLV2473CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2473CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2473CN?
TLV2473CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2473CN 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 TLV2473CN?
For technical support, including TLV2473CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2473CN requirements.
6.How does Aetrix verify that TLV2473CN is sourced from the original manufacturer or authorized distributors?
All TLV2473CN 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 TLV2473CN meets industry standards.
7.What is the process for return or replacement of TLV2473CN?
All TLV2473CN units undergo pre-shipment inspection (PSI). If there is an issue with TLV2473CN, 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 TLV2473CN part is unused and in its original packaging.
Return procedure for TLV2473CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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