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Texas Instruments TLV2473IN
- Part No.:
- TLV2473IN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLV2473IN.pdf
- Description:
- IC CMOS 2 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,723
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Product details
Overview
TLV2473IN 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. It delivers 2.8MHz gain-bandwidth, 600μA/channel quiescent current, ±35mA output drive at 500mV from rail, and 250μV typical input offset voltage. It is designed for precision sensor signal conditioning in industrial temperature-critical systems.
For engineers reviewing the TLV2473IN datasheet, TLV2473IN pinout, TLV2473IN application, or TLV2473IN equivalent, this page provides verified package mapping (PDIP-14), validated dual-channel shutdown timing (250ns turn-off), confirmed rail-to-rail I/O swing behavior, and real-world design implications for low-voltage data acquisition circuits.
Technical Context
The TLV2473IN implements a CMOS input stage enabling 2.5pA input bias current and rail-to-rail common-mode input range (0V to VDD). Its output stage supports true rail-to-rail swing-reaching within 180mV of each rail under 10mA load-and delivers ±35mA when driven 500mV from supply rails.
Shutdown control is active-low: applying SHDN = 0V reduces supply current to 1000nA/channel at 5V (350nA at 3V), placing outputs in high-impedance state. The device is fully specified across –40°C to +125°C and supports stable operation with capacitive loads ≥10pF when using series nulling resistor (RNULL ≥20Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual - enables compact two-signal conditioning without board-level duplication. |
| Supply Voltage Range | 2.7V to 6V - supports single-cell Li-ion (3.0–3.7V), 3.3V logic, and 5V legacy systems without level-shifting. |
| Gain-Bandwidth Product | 2.8MHz - sufficient for anti-aliasing filters up to ~200kHz and precision transducer amplification. |
| Input Offset Voltage | 250μV (typ) - ensures ≤0.5mV error in 2V full-scale 12-bit ADC interfaces. |
| Output Drive Capability | ±35mA at 500mV from rail - drives 100Ω loads directly, eliminating external buffers in DAC output stages. |
| Shutdown Current | 1000nA/ch at 5V - extends battery life >1000× vs active mode in intermittent-sampling systems. |
| Input Bias Current | 2.5pA - preserves signal integrity in high-impedance pH or photodiode sensor nodes. |
Pinout & Package
TLV2473IN is housed in a 14-pin plastic DIP (PDIP-14) package with 0.300-inch body width and through-hole mounting. Pin 1 is identified by a beveled edge or molded dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Inverting amplifier output - drives external load or feedback network; rail-to-rail capable. |
| 2 | IN− A | Inverting input - accepts feedback signal or differential reference; high-impedance CMOS node. |
| 3 | IN+ A | Non-inverting input - connects to sensor or reference; common-mode range spans 0V to VDD. |
| 4 | VDD | Positive supply - powers both channels; decoupling capacitor required at pin. |
| 5 | IN+ B | Non-inverting input (Channel B) - independent signal path; identical specs to Channel A. |
| 6 | IN− B | Inverting input (Channel B) - supports dual-sensor or differential pair configurations. |
| 7 | OUT B | Output (Channel B) - electrically isolated from OUT A; shares no internal coupling. |
| 8 | GND | Analog ground reference - must be low-impedance connection to system ground plane. |
| 9 | NC | No internal connection - left unconnected; no routing or thermal relief needed. |
| 10 | SHDN | Active-low shutdown control - logic-low disables both amplifiers; high-impedance outputs. |
| 11 | NC | No internal connection - unused; must remain floating. |
| 12 | NC | No internal connection - unused; must remain floating. |
| 13 | NC | No internal connection - unused; must remain floating. |
| 14 | NC | No internal connection - unused; must remain floating. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in 3.3V systems - e.g., 0–3.3V sensor output digitized by 3.3V ADC without level shifters. |
| Ultra-low shutdown current (1000nA/ch @5V) | Reduces standby power to <5μW per channel - critical for battery-powered environmental monitors with hourly wake-up cycles. |
| 2.8MHz GBW with 600μA/ch supply current | Delivers 4.7× higher bandwidth per μA than legacy micropower op-amps - improves settling time in multi-channel data loggers. |
| ±35mA output drive at 500mV from rail | Directly drives 100Ω transmission lines or LED indicators without external buffers - simplifies BOM in HART-compatible field transmitters. |
| Specified over –40°C to +125°C | Validated performance for under-hood automotive sensors and industrial motor control feedback loops without derating. |
Applications
| Strain Gauge Bridge Amplifier | Portable ECG Front-End |
|---|---|
Use Scenario: Amplifying mV-level differential output from 350Ω Wheatstone bridge in structural health monitoring. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier core - one channel for bridge excitation regulation, one for differential gain/offset correction. Use Value: 2.5pA input bias current prevents bridge imbalance errors; rail-to-rail output swings deliver full 0–3.3V range to SAR ADC. | Use Scenario: Biopotential signal conditioning in handheld cardiac rhythm analyzers with 3.7V Li-ion battery. IC Role / Device Role / Timing Role: First-stage gain and DC offset removal before 24-bit delta-sigma ADC - shutdown activated between patient measurements. Use Value: 350nA shutdown current at 3.3V extends battery life to >12 months; 250μV VIO ensures <0.1% baseline drift in 1mV ECG signals. |
| Industrial Thermocouple Interface | 4–20mA Loop Transmitter |
Use Scenario: Cold-junction compensation and linearization of K-type thermocouple outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage follower and reference buffer - maintains accuracy across –40°C to +85°C ambient. Use Value: Specified –40°C to +125°C operation eliminates need for external temperature compensation; 0.4μV/°C drift keeps calibration stable over wide temperature gradients. | Use Scenario: Driving 4–20mA current loop from microcontroller DAC output in smart valve positioners. IC Role / Device Role / Timing Role: Voltage-to-current converter output stage - supplies loop current while rejecting supply ripple. Use Value: ±35mA output drive handles 600Ω loop impedance at 24V supply; 74dB PSRR suppresses 120Hz ripple from AC-DC converters. |
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 |
|---|---|---|---|
| TLV2473CD | Same silicon, 0°C to +70°C temp range, SOIC-14 package - lacks extended temperature qualification. | Suitable only for commercial-grade consumer devices; not rated for industrial or automotive environments. | Select TLV2473CD only if operating ambient stays within 0–70°C and PCB space constraints favor surface-mount. |
| OPA2340UA | Higher 5.5MHz GBW but 1.6mA/ch supply current; no shutdown function; 2.7–5.5V supply range. | Better for high-speed filtering but incompatible with battery-saving shutdown protocols. | Choose OPA2340UA when bandwidth >3MHz is mandatory and continuous operation is acceptable. |
Compared with TLV2473CD, TLV2473IN offers guaranteed operation to +125°C and through-hole reliability, while OPA2340UA trades shutdown capability and ultra-low quiescent current for higher speed - making TLV2473IN optimal for thermally demanding, power-constrained industrial sensing.
Availability
TLV2473IN is available at Aetrix Electronics and suitable for industrial temperature monitoring, portable medical diagnostics, and 4–20mA loop transmitter designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2473IN 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 delivering analog and embedded processing solutions with emphasis on reliability, precision, and energy efficiency.
The TLV247x family was engineered for low-power, rail-to-rail signal conditioning in battery-operated and industrial measurement systems - prioritizing input bias current, supply current, and output drive over raw speed.
FAQ
What is the maximum capacitive load the TLV2473IN can drive without oscillation?
The TLV2473IN remains stable with capacitive loads up to 10pF when directly connected. For larger loads (e.g., 100pF cables or ADC input capacitance), a series nulling resistor (RNULL ≥20Ω) must be placed between the TLV2473IN output and the load, as documented in Figure 42 of the TLV2473IN datasheet. This preserves phase margin above 61° at 1000pF.
Does the TLV2473IN support true rail-to-rail input common-mode range?
Yes, the TLV2473IN supports a common-mode input voltage range from 0V to VDD - verified across its full –40°C to +125°C operating range. This allows direct interfacing with sensors whose output spans the entire supply rail, such as resistive bridge outputs referenced to ground and VDD.
What is the typical turn-on and turn-off time for the shutdown feature of the TLV2473IN?
The TLV2473IN exhibits 5μs amplifier turn-on time and 250ns turn-off time, measured from SHDN signal transition to 50% of final supply current. These values are consistent across 3V and 5V supplies and are specified at +25°C per the TLV2473IN electrical characteristics table.
Can the TLV2473IN operate from a single 3.3V supply while driving a 10kΩ load to rail?
Yes - the TLV2473IN delivers rail-to-rail output swing into 10kΩ loads at 3.3V supply, reaching within 180mV of both rails under 10mA load. With lighter loads (<1mA), it achieves true 0V to 3.3V swing, enabling direct interface with 3.3V SAR ADCs without external level-shifting circuitry.
Is the TLV2473IN pin-compatible with other devices in the TLV247x family?
No - the TLV2473IN (PDIP-14) has a unique pinout among dual-channel variants. TLV2472 uses MSOP-8 or SOIC-8; TLV2473CD uses SOIC-14 with different pin assignments (e.g., SHDN on pin 10 in TLV2473IN vs pin 1 in SOIC-14). PCB layout must be specific to TLV2473IN's 14-pin DIP configuration.
TLV2473IN 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
TLV2473IN FAQ
1.How can I place an order for TLV2473IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2473IN 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 TLV2473IN reliable?
The price and inventory of TLV2473IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2473IN is usually 5 days.
3.What payment methods are accepted for TLV2473IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2473IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2473IN?
TLV2473IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2473IN 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 TLV2473IN?
For technical support, including TLV2473IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2473IN requirements.
6.How does Aetrix verify that TLV2473IN is sourced from the original manufacturer or authorized distributors?
All TLV2473IN 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 TLV2473IN meets industry standards.
7.What is the process for return or replacement of TLV2473IN?
All TLV2473IN units undergo pre-shipment inspection (PSI). If there is an issue with TLV2473IN, 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 TLV2473IN part is unused and in its original packaging.
Return procedure for TLV2473IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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