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Texas Instruments LM2904ITPX/NOPB
- Part No.:
- LM2904ITPX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-UFBGA, DSBGA
- Datasheet:
-
LM2904ITPX/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,155
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Product details
Overview
LM2904ITPX/NOPB from Texas Instruments is a dual, low-power, internally frequency-compensated operational amplifier optimized for single-supply operation from 3 V to 26 V. It features rail-to-ground input common-mode range, rail-to-ground output swing capability, 1 MHz unity-gain bandwidth, 100 dB open-loop gain, and 500 µA supply current per amplifier - enabling precision signal conditioning in battery-powered industrial sensors and 4–20 mA transmitter front-ends.
For engineers reviewing the LM2904ITPX/NOPB datasheet, LM2904ITPX/NOPB pinout, LM2904ITPX/NOPB application, or LM2904ITPX/NOPB equivalent, key selection criteria include guaranteed operation down to 3 V, input voltage range extending to ground, output swing within 20 mV of ground at 5 V supply, temperature-compensated unity-gain crossover, and compatibility with single-supply analog interface designs requiring low quiescent current and DC-coupled inputs.
Technical Context
The LM2904ITPX/NOPB implements two independent PNP-input op-amps in a single monolithic IC, each featuring internal unity-gain compensation and bias networks that maintain stable 500 µA supply current across 3 V–26 V supply range. Its input stage allows common-mode voltages from ground to (V+ − 1.5 V), and its output stage supports sourcing up to 40 mA and sinking up to 20 mA while swinging within 20 mV of ground at 5 V supply.
This device operates reliably over −40°C to +85°C and is specified with 2 mV max input offset voltage, 70 dB min CMRR, and 65 dB min PSRR - making it suitable for transducer amplification, active filtering, and industrial current-loop interfaces where rail-to-ground operation and thermal stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 26 V single supply (±1.5 V to ±13 V dual); enables direct use with 3.3 V/5 V/12 V systems without level-shifting. |
| Unity-Gain Bandwidth | 1 MHz (temperature compensated); ensures stable closed-loop performance in DC–100 kHz signal paths without external compensation. |
| Input Offset Voltage | 2 mV max (25°C); supports accurate DC amplification in sensor front-ends with ≤0.2% error at 1 V output. |
| Supply Current per Amplifier | 500 µA typical (independent of supply voltage); allows dual-op-amp functionality in ultra-low-power applications like portable instrumentation. |
| Input Common-Mode Range | 0 V to (V+ − 1.5 V); permits direct connection of grounded-signal sources (e.g., thermocouples, RTDs) without bias resistors. |
| Output Voltage Swing | Within 20 mV of ground at 5 V supply (RL = 10 kΩ); enables true single-supply operation with full dynamic range near 0 V reference. |
| Large-Signal Voltage Gain | 25 V/mV min (RL ≥ 2 kΩ); delivers ≥25,000× open-loop gain for high-precision closed-loop configurations. |
Pinout & Package
LM2904ITPX/NOPB is packaged in an 8-pin DSBGA (YPB) with 1.31 mm × 1.31 mm body size and 0.5 mm pitch, optimized for space-constrained PCB layouts in portable and industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Output, Channel A | Amplified output of first op-amp; capable of sourcing 40 mA / sinking 20 mA with rail-to-ground swing. |
| –INA (Pin 2) | Inverting Input, Channel A | Differential input node for channel A; accepts signals from ground to (V+ − 1.5 V) with 45 nA max input bias current. |
| +INA (Pin 3) | Non-inverting Input, Channel A | Differential input node for channel A; same voltage range and bias current as –INA. |
| GND / V– (Pin 4) | Ground / Negative Supply | Reference node for single-supply operation; serves as return path for both amplifiers and bias network. |
| +INB (Pin 5) | Non-inverting Input, Channel B | Differential input node for second op-amp; electrically identical to +INA in specs and function. |
| –INB (Pin 6) | Inverting Input, Channel B | Differential input node for second op-amp; matches –INA in electrical behavior and tolerance. |
| OUTB (Pin 7) | Output, Channel B | Amplified output of second op-amp; fully independent of OUTA with identical drive capability. |
| V+ (Pin 8) | Positive Supply | Main power input for both amplifiers; supports 3 V–26 V range with no derating required below 26 V. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground input common-mode range | Enables direct interfacing with grounded sensors (e.g., strain gauges, thermistors) without input biasing networks. |
| Rail-to-ground output swing (to GND) | Allows full-scale output down to 0 V in single-supply systems, eliminating need for negative rails in 4–20 mA loop drivers. |
| Temperature-compensated unity-gain crossover | Maintains stable 1 MHz bandwidth across −40°C to +85°C, ensuring consistent filter cutoff and amplifier response in varying environments. |
| Low 500 µA supply current per amplifier | Supports always-on monitoring circuits in battery-powered devices with multi-year runtime (e.g., wireless sensor nodes). |
| Internally frequency compensated | Eliminates need for external compensation components in unity-gain and low-gain configurations, reducing BOM count and layout area. |
Applications
| Industrial Sensor Signal Conditioning | 4–20 mA Current Loop Transmitter |
|---|---|
Use Scenario: Amplifying low-level mV outputs from load cells or pressure transducers in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Dual op-amp performs differential-to-single-ended conversion and programmable gain staging before ADC sampling. Use Value: Rail-to-ground input allows direct connection to bridge sensors referenced to system ground; rail-to-ground output drives ADC reference without level-shifting. |
Use Scenario: Converting DAC voltage output into regulated 4–20 mA loop current for field instrument communication. IC Role / Device Role / Timing Role: One amplifier acts as voltage-controlled current source; the other buffers feedback voltage for precision current regulation. Use Value: Guaranteed 2 mV max input offset ensures <±0.1% current accuracy; 500 µA quiescent current minimizes self-heating error in sealed enclosures. |
| Active Low-Pass Filtering | Single-Supply Audio Pre-Amplification |
Use Scenario: Removing high-frequency noise from motor current sensing in variable-frequency drives. IC Role / Device Role / Timing Role: Configured as 2nd-order Sallen-Key low-pass filter with cutoff at 10 kHz to suppress PWM switching harmonics. Use Value: 1 MHz unity-gain bandwidth supports clean filter response up to 100 kHz; internal compensation eliminates tuning complexity. |
Use Scenario: Boosting microphone-level signals in battery-powered voice recorders operating from 3.3 V. IC Role / Device Role / Timing Role: First amplifier provides 20× non-inverting gain; second buffers output to drive 10 kΩ audio codec input. Use Value: Input common-mode range including ground avoids DC-blocking capacitors; 500 µA total supply current extends battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DR | Wider supply range (3–32 V), higher operating temperature (0°C to 70°C), 7 mV max input offset voltage. | Preferred for commercial-grade 5 V/12 V systems where extended voltage headroom is needed but industrial temp range is not required. | Select LM358DR when cost sensitivity outweighs −40°C startup requirement and 2 mV offset is not critical. |
| TLV2462IDR | Rail-to-rail input/output, 0.55 mA supply current, 2.5 V to 6 V supply only, 1.6 mV max offset, 6.4 MHz GBW. | Suitable for low-voltage precision applications (e.g., 3.3 V medical sensors) where bandwidth and offset dominate over power efficiency. | Choose TLV2462IDR only if rail-to-rail I/O and sub-2 mV offset justify 10× higher supply current and narrower voltage range. |
Compared with LM358DR, LM2904ITPX/NOPB offers guaranteed −40°C operation and tighter 2 mV offset but sacrifices 6 V of maximum supply headroom; versus TLV2462IDR, it trades rail-to-rail performance and bandwidth for 55% lower quiescent current and broader 3–26 V compatibility - making it optimal for industrial single-supply signal chains prioritizing robustness and power efficiency.
Availability
LM2904ITPX/NOPB is available at Aetrix Electronics and suitable for industrial sensor interfaces, 4–20 mA transmitter designs, and active filter implementations requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904ITPX/NOPB 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 for industrial, automotive, and personal electronics markets.
LM2904ITPX/NOPB belongs to TI's legacy LMx58-N series of low-power dual op-amps, designed specifically for single-supply industrial signal conditioning where rail-to-ground operation, thermal stability, and cost-effective reliability are essential.
FAQ
What is the operating temperature range of the LM2904ITPX/NOPB?
The LM2904ITPX/NOPB is rated for operation from −40°C to +85°C. This industrial temperature range is confirmed in Section 6.3 of the official TI datasheet (SNOSBT3J), and distinguishes it from the commercial-grade LM358 (0°C to 70°C) and military-grade LM158 (−55°C to 125°C). The LM2904ITPX/NOPB maintains all key specifications-including input offset voltage, supply current, and CMRR-within this full range.
Does the LM2904ITPX/NOPB support true rail-to-ground output swing?
Yes, the LM2904ITPX/NOPB delivers output voltage swing within 20 mV of ground when loaded with 10 kΩ at 5 V supply (per Section 6.6, VOL specification). This rail-to-ground capability is enabled by its PNP input stage and class-A/B output architecture, allowing direct interfacing with zero-referenced ADCs or current-sink loads without negative supply rails - a core design feature explicitly documented for the LM2904 variant.
Is the LM2904ITPX/NOPB pin-compatible with other LM2904 variants?
Yes, the LM2904ITPX/NOPB uses the standard 8-pin DSBGA (YPB) package with identical pinout to all LM2904-N family members in the same package type. Pin functions - including OUTA (1), –INA (2), +INA (3), GND (4), +INB (5), –INB (6), OUTB (7), and V+ (8) - match Table 5-1 in the TI datasheet and are electrically and mechanically interchangeable with LM2904DT/NOPB (SOIC) and LM2904DGKR (VSSOP) when using appropriate footprint adaptation.
What is the maximum supply voltage for the LM2904ITPX/NOPB?
The absolute maximum supply voltage for the LM2904ITPX/NOPB is 26 V, as specified in Section 6.1 (Absolute Maximum Ratings) of the TI datasheet. This is lower than the 32 V limit for LM358/LM158 due to process and packaging optimizations for the LM2904 series. Operating above 26 V risks permanent damage, and recommended operation is bounded by 3 V to 26 V per Section 6.3.
How does the input bias current of the LM2904ITPX/NOPB behave over temperature?
The LM2904ITPX/NOPB features temperature-compensated input bias current, maintaining approximately 45 nA typical at 25°C and remaining stable across −40°C to +85°C (Section 1, "Unique characteristics"). Unlike basic bipolar op-amps, its PNP input stage bias network is engineered to minimize drift - a documented advantage cited in the datasheet's Feature section to ensure consistent high-impedance sensor interfacing without thermal-induced offset shifts.
LM2904ITPX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 45 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA
LM2904ITPX/NOPB FAQ
1.How can I place an order for LM2904ITPX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904ITPX/NOPB 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 LM2904ITPX/NOPB reliable?
The price and inventory of LM2904ITPX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904ITPX/NOPB is usually 5 days.
3.What payment methods are accepted for LM2904ITPX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904ITPX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904ITPX/NOPB?
LM2904ITPX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904ITPX/NOPB 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 LM2904ITPX/NOPB?
For technical support, including LM2904ITPX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904ITPX/NOPB requirements.
6.How does Aetrix verify that LM2904ITPX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2904ITPX/NOPB 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 LM2904ITPX/NOPB meets industry standards.
7.What is the process for return or replacement of LM2904ITPX/NOPB?
All LM2904ITPX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2904ITPX/NOPB, 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 LM2904ITPX/NOPB part is unused and in its original packaging.
Return procedure for LM2904ITPX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904ITPX/NOPB Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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