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Texas Instruments TLV2473CD
- Part No.:
- TLV2473CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2473CD.pdf
- Description:
- IC CMOS 2 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,551
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Product details
Overview
TLV2473CD 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 ±10mA output drive at 180mV from rails-designed for low-voltage sensor interface and portable medical equipment.
For engineers reviewing the TLV2473CD datasheet, TLV2473CD pinout, TLV2473CD application, or TLV2473CD 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 TLV2473CD implements a CMOS input stage enabling 2.5pA input bias current and rail-to-rail common-mode input range (0 V to VDD). Its output stage supports true rail-to-rail swing under load: ±10mA at 180mV from supply rails and ±35mA at 500mV off-rail.
It features active shutdown with 350nA/channel (3V) or 1000nA/channel (5V) quiescent current, fast turn-on/turn-off times (5μs / 250ns), and stable operation into capacitive loads ≥10pF when using series nulling resistor (RNULL ≥20Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 2.8MHz - enables stable unity-gain buffer or closed-loop amplification up to ~200kHz with phase margin >61° into 10kΩ//1000pF. |
| Supply Current per Channel | 600μA - supports multi-day battery life in 3V coin-cell–powered instrumentation with minimal thermal rise. |
| Input Bias Current | 2.5pA - preserves high-impedance sensor node accuracy (e.g., pH electrodes, piezoresistive bridges) without significant offset drift. |
| Output Drive Capability | ±10mA at 180mV from rail - drives 10kΩ loads fully across 2.7–6V supply while maintaining <200mV headroom. |
| Shutdown Supply Current | 350nA/ch at 3V - reduces system standby power to sub-μW level, critical for always-on sensor wake-up circuits. |
| Input Offset Voltage | 250μV (typ) - ensures ≤0.5mV total error in 12-bit ADC front-end applications with gain ≤20. |
| Supply Voltage Range | 2.7V to 6V - compatible with single Li-ion, two alkaline, or regulated 3.3V/5V rails without external level-shifting. |
Pinout & Package
TLV2473CD is housed in a 10-pin MSOP (DGQ) package with exposed thermal pad. Pin 1 is marked by beveled edge or molded dot; pin numbering follows standard MSOP top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Inverting amplifier output; rail-to-rail capable; requires RNULL ≥20Ω for stability into >10pF capacitive loads. |
| 2 | IN−1 | Inverting input; high-impedance CMOS node; sensitive to PCB leakage and ESD. |
| 3 | IN+1 | Non-inverting input; accepts signals from 0V to VDD; used for unity-gain buffers or active filters. |
| 4 | VDD | Positive supply rail; bypass with 0.1μF ceramic capacitor close to pin for noise immunity. |
| 5 | IN+2 | Non-inverting input of second op-amp; electrically isolated from Channel 1 except via shared VDD/GND. |
| 6 | IN−2 | Inverting input of second op-amp; matches Channel 1 performance within 10% parameter spread. |
| 7 | OUT2 | Second amplifier output; identical drive capability and rail-to-rail behavior as OUT1. |
| 8 | GND | Analog ground reference; must be low-impedance plane connected directly to VDD bypass cap ground. |
| 9 | NC | No internal connection; left floating or tied to GND for mechanical stability only. |
| 10 | SHDN | Active-low shutdown control; pulls to GND to disable both amplifiers; logic-compatible with 3.3V/5V microcontrollers. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in single-supply systems (e.g., 3V ADC reference = 0–3V input span). |
| 600μA/channel supply current | Reduces total quiescent power to 1.2mA for dual-channel operation-ideal for energy-harvesting nodes. |
| 350nA/channel shutdown current | Lowers system standby power to 700nA, extending shelf life of battery-backed medical sensors. |
| ±10mA output at 180mV from rail | Drives 10-bit DAC buffers, LED drivers, or transducer excitation circuits without external boost stages. |
| 2.5pA input bias current | Minimizes voltage error across high-Z sources (e.g., 10MΩ thermistor networks), preserving measurement fidelity. |
| MSOP-10 thermal pad | Improves thermal resistance (θJA = 52.3°C/W) for sustained output current in compact PCB layouts. |
Applications
| Portable ECG Front-End | Low-Power Gas Sensor Signal Chain |
|---|---|
|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in battery-operated wearable ECG monitors. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end: Channel 1 as differential input stage, Channel 2 as reference buffer with shutdown during sleep cycles. Use Value: 2.5pA input bias prevents electrode polarization drift; 350nA shutdown current extends 3V coin-cell life beyond 12 months in intermittent-sampling mode. |
Use Scenario: Conditioning output from electrochemical CO sensors requiring precise 200μA bias current and low-noise amplification. IC Role / Device Role / Timing Role: Transimpedance amplifier (Channel 1) + bias current source (Channel 2 configured as Howland current pump). Use Value: Rail-to-rail output swings enable full 0–3V ADC range utilization; 600μA/channel current allows continuous 24/7 operation on AA batteries for >6 months. |
| Industrial Temperature Transmitter | Smart Home Motion Detector Signal Processor |
|
Use Scenario: Amplifying RTD bridge outputs in 4–20mA loop-powered temperature transmitters operating from 12–36V supplies via LDO. IC Role / Device Role / Timing Role: Precision difference amplifier (Channel 1) + reference voltage follower (Channel 2) with shutdown during calibration sequences. Use Value: 250μV input offset contributes <0.1°C error in Pt100 measurements; ±35mA output drive supports driving 4–20mA loop drivers directly. |
Use Scenario: Active filtering and gain staging of PIR sensor outputs in battery-powered smart occupancy sensors. IC Role / Device Role / Timing Role: Single-pole low-pass filter (Channel 1) + comparator hysteresis generator (Channel 2) with synchronized shutdown between detection windows. Use Value: 2.8MHz GBW supports 10Hz–100Hz bandpass filtering; 5μs turn-on time ensures immediate response to motion events without latency. |
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 |
|---|---|---|---|
| MCP6022-I/SN | Higher supply current (1mA/ch), no shutdown, 10MHz GBW, 7mV max VIO. | Better for wideband active filters but unsuitable for ultra-low-power standby modes. | Select when bandwidth >2.8MHz is required and shutdown is unnecessary. |
| OPA2333AIDGKR | Zero-drift architecture, 17μV max VIO, 17μA/ch supply current, no shutdown, 350kHz GBW. | Superior DC precision for strain gauge bridges but insufficient bandwidth for audio or fast sensor sampling. | Select when nanovolt-level offset stability over temperature is critical and speed is secondary. |
Compared with MCP6022-I/SN and OPA2333AIDGKR, TLV2473CD uniquely balances micropower operation (600μA/ch), rail-to-rail I/O, integrated shutdown (350nA/ch), and 2.8MHz bandwidth-making it optimal for battery-constrained, medium-speed analog front-ends where both precision and power efficiency are mandatory.
Availability
TLV2473CD is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, and smart home occupancy detectors requiring stable component supply across extended production lifecycles.
Supply support for TLV2473CD 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 chain solutions.
The TLV2473CD belongs to TI's TLV247x family of micropower rail-to-rail op-amps, engineered specifically for battery-powered instrumentation, portable diagnostics, and energy-efficient industrial sensing applications.
FAQ
What is the maximum capacitive load the TLV2473CD can drive without oscillation?
The TLV2473CD remains stable into capacitive loads up to 10pF with direct connection. For loads exceeding 10pF, TI recommends adding a series nulling resistor (RNULL) ≥20Ω between the output and load capacitance. This configuration maintains phase margin >61° at 10kΩ//1000pF, preventing ringing or oscillation in sensor buffering applications. The TLV2473CD datasheet Figure 42 provides layout guidance for this implementation.
Does the TLV2473CD support true rail-to-rail output swing under load?
Yes-the TLV2473CD delivers true rail-to-rail output swing: it sources/sinks ±10mA while staying within 180mV of each supply rail (VDD or GND), and ±35mA while staying within 500mV. This is confirmed in the Electrical Characteristics tables (pages 4–7 of SLOS232E) for both 3V and 5V operation. This capability eliminates need for external level-shifting in single-supply data acquisition systems.
How does the shutdown function behave on the TLV2473CD?
The TLV2473CD's SHDN pin is active-low: pulling it to GND disables both amplifiers, placing outputs in high-impedance state and reducing supply current to 350nA/channel (at 3V) or 1000nA/channel (at 5V). Turn-off time is 250ns; turn-on time is 5μs (measured from SHDN logic transition to half-final IDD). These values are specified in the Operating Characteristics table (page 6, SLOS232E) and validated across –40°C to +125°C.
Can the TLV2473CD operate from a 2.7V supply while maintaining full specifications?
Yes-the TLV2473CD is fully specified from 2.7V to 6V. Key parameters-including 2.8MHz gain-bandwidth product, 600μA/channel supply current, 250μV typical input offset voltage, and ±10mA output drive-are guaranteed at 2.7V (per Electrical Characteristics tables on pages 4–7, SLOS232E). This makes it suitable for direct integration with single-cell Li-ion or two-cell alkaline battery systems without regulation.
What is the thermal performance of the TLV2473CD in MSOP-10 (DGQ) package?
The TLV2473CD in MSOP-10 (DGQ) package has θJA = 52.3°C/W and θJC = 4.7°C/W (per Dissipation Rating Table, page 4, SLOS232E). With its exposed thermal pad soldered to a 1-in² copper area, it sustains ±35mA output current continuously at +85°C ambient without derating. This enables reliable operation in compact, sealed enclosures like handheld diagnostic tools.
TLV2473CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLV2473CD FAQ
1.How can I place an order for TLV2473CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2473CD 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 TLV2473CD reliable?
The price and inventory of TLV2473CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2473CD is usually 5 days.
3.What payment methods are accepted for TLV2473CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2473CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2473CD?
TLV2473CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2473CD 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 TLV2473CD?
For technical support, including TLV2473CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2473CD requirements.
6.How does Aetrix verify that TLV2473CD is sourced from the original manufacturer or authorized distributors?
All TLV2473CD 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 TLV2473CD meets industry standards.
7.What is the process for return or replacement of TLV2473CD?
All TLV2473CD units undergo pre-shipment inspection (PSI). If there is an issue with TLV2473CD, 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 TLV2473CD part is unused and in its original packaging.
Return procedure for TLV2473CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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