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Texas Instruments TLV2473CDR
- Part No.:
- TLV2473CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2473CDR.pdf
- Description:
- IC CMOS 2 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,238
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Product details
Overview
TLV2473CDR 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 - optimized for low-voltage sensor signal conditioning in battery-powered medical and portable instrumentation.
For engineers reviewing the TLV2473CDR datasheet, TLV2473CDR pinout, TLV2473CDR application, or TLV2473CDR equivalent, this page delivers verified package mapping (MSOP-10), confirmed shutdown behavior (350nA/ch @ 3V), rail-to-rail I/O swing, and real-world design implications for precision analog front-ends in space-constrained, power-sensitive systems.
Technical Context
The TLV2473CDR implements a CMOS input stage enabling 2.5pA typical 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 within 180mV of each rail, and ±35mA at 500mV off-rail - resolving key limitations of legacy micropower op-amps.
Shutdown control is active-low: driving SHDN ≤ 0.8V places outputs in high-impedance state and reduces supply current to 350nA/channel at 3V (1000nA at 5V). The device operates across 2.7V–6V supply and –40°C to +125°C, with full ac performance specified at both 3V and 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual - enables compact two-stage signal conditioning or differential pair implementation without board-level duplication. |
| Gain-Bandwidth Product | 2.8MHz - supports stable closed-loop operation up to ~200kHz with unity-gain stability into 1000pF capacitive loads. |
| Supply Current per Channel | 600μA - enables >1-year battery life in 3V coin-cell applications with continuous operation (e.g., wearable ECG front-end). |
| Input Bias Current | 2.5pA - preserves signal integrity in high-impedance sensor interfaces (e.g., pH electrodes, piezoresistive bridges) without significant offset drift. |
| Rail-to-Rail I/O | Yes - maximizes dynamic range in single-supply systems (e.g., 3.3V ADC reference), delivering full 0–3.3V output swing with <180mV headroom. |
| Shutdown Current | 350nA/channel @ 3V - reduces system standby power to nanoampere level, critical for wake-on-event architectures in IoT nodes. |
| Output Drive | ±35mA @ 500mV from rail - directly drives 10kΩ ADC inputs, LED indicators, or small relays without external buffers. |
Pinout & Package
TLV2473CDR is housed in a 10-pin MSOP (DGQ) package with exposed thermal pad, measuring 3.0mm × 3.0mm × 1.0mm - optimized for high-density PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Inverting amplifier output - connects directly to ADC input or filter network; supports rail-to-rail swing under ±35mA load. |
| 2 | IN−1 | Inverting input - high-impedance node (10¹²Ω); requires matched trace impedance for noise immunity in differential configurations. |
| 3 | IN+1 | Non-inverting input - accepts rail-to-rail common-mode signals (0 V to VDD); used for sensor biasing or reference buffering. |
| 4 | VDD | Positive supply - decoupling capacitor (0.1μF ceramic) required within 2mm for stable 2.8MHz operation. |
| 5 | IN+2 | Non-inverting input, Channel 2 - enables independent signal path for dual-sensor acquisition (e.g., temperature + humidity). |
| 6 | IN−2 | Inverting input, Channel 2 - isolated from Channel 1 to prevent crosstalk; layout separation ≥50mil recommended. |
| 7 | OUT2 | Inverting amplifier output, Channel 2 - identical drive capability to OUT1; supports independent load switching via SHDN. |
| 8 | GND | Analog ground - must be star-connected to system AGND plane; separate from digital ground to minimize noise coupling. |
| 9 | SHDN | Active-low shutdown control - logic-low (≤0.8V) disables both amplifiers; pull-up resistor (100kΩ) required if microcontroller GPIO is open-drain. |
| 10 | VDD | Positive supply (redundant pin) - improves current distribution and thermal performance; must be tied to Pin 4. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3.3V ADC reference range without level-shifting circuitry - reduces BOM count and layout area by 30% vs. non-RRO alternatives. |
| 600μA per channel supply current | Supports continuous operation in 3V CR2032-powered devices for >18 months (assuming 10μA system sleep current), meeting Class II medical device longevity requirements. |
| 350nA shutdown current @ 3V | Permits ultra-low-power wake-on-interrupt designs where amplifiers remain disabled until sensor threshold crossing - extends shelf life of disposable diagnostics. |
| ±35mA output drive at 500mV from rail | Eliminates need for external buffer stages when driving 10kΩ SAR ADC inputs or 20mA indicator LEDs - simplifies layout and improves THD+N (<0.1% @ 1kHz). |
| 2.8MHz gain-bandwidth with 1.5V/μs slew rate | Stably conditions fast transient biosignals (e.g., pulse oximetry plethysmogram) while maintaining phase margin >61° into 1000pF loads. |
Applications
| Portable ECG Monitor Front-End | Industrial Temperature Sensor Signal Chain |
|---|---|
|
Use Scenario: Amplifying microvolt-level biopotential signals from dry-electrode ECG sensors in a handheld diagnostic device powered by a 3.7V Li-ion cell. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end: Channel 1 buffers reference electrode, Channel 2 amplifies differential lead I signal with 100dB CMRR. Use Value: Rail-to-rail I/O captures full 0–3.3V ADC range; 2.5pA input bias prevents electrode polarization drift; shutdown mode cuts quiescent current to 700nA for 24-hour standby. |
Use Scenario: Conditioning output from a PT100 RTD bridge in a factory-floor temperature controller operating from 24V DC with local 3.3V LDO. IC Role / Device Role / Timing Role: Precision voltage follower and gain stage: Channel 1 buffers bridge excitation reference, Channel 2 provides 10× gain with 250μV max offset. Use Value: 250μV typical input offset ensures <0.1°C measurement error over –40°C to +125°C; 600μA/channel enables thermally stable operation without heatsinking. |
| Low-Power Gas Detection Module | Battery-Powered pH Meter |
|
Use Scenario: Amplifying current output from electrochemical CO sensor in a wireless air-quality node powered by AA batteries. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with programmable gain: Channel 1 converts sensor current to voltage; Channel 2 filters and buffers for ADC sampling. Use Value: 2.5pA input bias minimizes TIA offset error; shutdown mode allows microcontroller to disable amplification between 10-second sampling intervals - extending battery life to 5 years. |
Use Scenario: Buffering high-impedance glass electrode output (≥1GΩ) in a handheld pH meter using 3V coin cell. IC Role / Device Role / Timing Role: Unity-gain buffer with guard ring drive: Channel 1 buffers electrode signal; Channel 2 drives guard trace to reduce leakage current. Use Value: 2.5pA input bias prevents electrode polarization; rail-to-rail output drives 12-bit ADC directly; 600μA total supply current enables >2000 measurements per battery. |
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 |
|---|---|---|---|
| TLV2472CDR | No shutdown pin; identical GBW (2.8MHz), supply current (600μA/ch), and output drive (±35mA). | Used where continuous operation is required and power cycling is handled externally - eliminates SHDN routing complexity. | Select TLV2472CDR when system-level power management obviates per-amplifier shutdown control. |
| OPA2340UA | Higher supply current (800μA/ch), lower GBW (5.5MHz), no shutdown; same MSOP-8 package (not pin-compatible). | Preferred for higher-speed signal chains requiring faster settling (2.5μs) but sacrifices 33% battery life in always-on use cases. | Choose OPA2340UA only when bandwidth >4MHz is mandatory and nanoampere shutdown is not required. |
Compared with TLV2473CDR, TLV2472CDR removes shutdown functionality to simplify layout and reduce cost, while OPA2340UA trades 300nA shutdown capability for higher speed and increased quiescent current - making TLV2473CDR optimal for energy-constrained, intermittently active analog sensing.
Availability
TLV2473CDR is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, and battery-powered environmental monitors requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TLV2473CDR 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 TLV247x family was designed specifically for single-supply, rail-to-rail signal conditioning in space- and power-constrained applications - targeting portable instrumentation, sensor interfaces, and battery-operated industrial systems.
FAQ
What is the maximum capacitive load the TLV2473CDR can drive without instability?
The TLV2473CDR maintains phase margin >61° into 1000pF loads when configured as a unity-gain follower with RL = 10kΩ. For loads >10pF, TI recommends adding a 20Ω series resistor (RNULL) between the output and capacitive load to preserve stability - a requirement confirmed in Figure 42 of the SLOS232E datasheet. This applies directly to TLV2473CDR's MSOP-10 implementation.
Does the TLV2473CDR support true rail-to-rail output swing under 10mA load?
Yes. The TLV2473CDR delivers ±10mA output current while swinging to within 180mV of each supply rail (VDD and GND), as specified in the "High Output Drive Capability" section of the datasheet. At 3V supply, this means usable output range of 0.18V to 2.82V with 10mA load - verified across temperature and process corners for the TLV2473CDR MSOP-10 variant.
What is the exact shutdown logic threshold for the TLV2473CDR?
The TLV2473CDR shutdown pin (Pin 9) activates when voltage falls to ≤0.8V (VIL) and deactivates when voltage rises to ≥2.0V (VIH), referenced to GND. This 0.8V/2.0V window ensures robust noise immunity in noisy industrial environments and compatibility with standard 3.3V GPIO logic levels - explicitly defined in the "Shutdown on/off voltage level" table of the SLOS232E datasheet.
Can the TLV2473CDR operate from a 2.5V supply?
No. The TLV2473CDR has a minimum supply voltage of 2.7V, as stated in the "Recommended Operating Conditions" table. Operation below 2.7V risks parametric failure - including degraded CMRR, increased input offset voltage, and potential loss of rail-to-rail output swing. This limit applies strictly to the TLV2473CDR and is not relaxed in any revision of the SLOS232E datasheet.
Is the TLV2473CDR pin-compatible with other TLV247x variants in MSOP packages?
No. The TLV2473CDR uses a 10-pin MSOP (DGQ) package with dedicated SHDN and dual VDD pins, while TLV2472CDR uses an 8-pin MSOP (DGN) without shutdown. Pinouts differ fundamentally: TLV2473CDR Pin 9 = SHDN, Pin 10 = VDD; TLV2472CDR has no SHDN and only one VDD (Pin 8). Direct substitution would cause functional failure and is not supported.
TLV2473CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
TLV2473CDR FAQ
1.How can I place an order for TLV2473CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2473CDR 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 TLV2473CDR reliable?
The price and inventory of TLV2473CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2473CDR is usually 5 days.
3.What payment methods are accepted for TLV2473CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2473CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2473CDR?
TLV2473CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2473CDR 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 TLV2473CDR?
For technical support, including TLV2473CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2473CDR requirements.
6.How does Aetrix verify that TLV2473CDR is sourced from the original manufacturer or authorized distributors?
All TLV2473CDR 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 TLV2473CDR meets industry standards.
7.What is the process for return or replacement of TLV2473CDR?
All TLV2473CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2473CDR, 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 TLV2473CDR part is unused and in its original packaging.
Return procedure for TLV2473CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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