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Texas Instruments LM2904BIDR
- Part No.:
- LM2904BIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904BIDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,753
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Product details
Overview
LM2904BIDR from Texas Instruments is a dual operational amplifier optimized for cost-sensitive industrial and automotive applications, featuring 3V–36V wide supply range, 300µA/ch quiescent current, 1.2MHz unity-gain bandwidth, rail-to-rail input (including ground), and ±3mV max input offset voltage at 25°C. It serves as a precision signal conditioning and feedback amplifier in motor control, power supply regulation, and sensor interface circuits.
For engineers reviewing the LM2904BIDR datasheet, LM2904BIDR pinout, LM2904BIDR application, or LM2904BIDR equivalent, this page delivers verified electrical specifications, SOIC-8 package details, thermal performance data, ESD robustness (2kV HBM), and real-world implementation guidance for embedded analog subsystems requiring stable DC accuracy and wide-voltage operation.
Technical Context
The LM2904BIDR implements two independent high-voltage op amps with internal RF/EMI filtering, enabling reliable operation in electrically noisy environments such as motor drives and industrial inverters. Its input stage supports common-mode voltage down to V– (ground in single-supply mode), eliminating level-shifting requirements for low-side current sensing.
It features unity-gain stable architecture with 56° phase margin, 0.5V/µs slew rate, and 100pF capacitive load drive capability - making it suitable for closed-loop control loops, active filters, and voltage/current monitoring without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - supports direct integration into 12V/24V industrial rails and wide-input power supplies without regulators. |
| Input Offset Voltage (max, 25°C) | ±3mV - enables accurate DC-coupled amplification of mV-level sensor signals (e.g., shunt-based current sense) without trimming. |
| Quiescent Current per Channel | 300µA (typ) - allows battery-backed or energy-constrained systems (e.g., smart HVAC controllers) to maintain analog monitoring with minimal standby drain. |
| Unity-Gain Bandwidth | 1.2MHz - sufficient for anti-aliasing filtering, PID loop compensation up to ~100kHz, and audio-band signal conditioning. |
| Common-Mode Input Range | Includes V– (ground) - permits direct connection to low-side shunts, thermocouples, and other ground-referenced sources without bias networks. |
| ESD Rating (HBM) | ±2000V - meets IEC 61000-4-2 Level 2 immunity requirements for industrial control panels and field-deployed equipment. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and outdoor power electronics. |
Pinout & Package
LM2904BIDR is packaged in an 8-pin SOIC (D package), measuring 4.9mm × 6mm, with standard JEDEC MS-012AC footprint and gull-wing leads for automated assembly and thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Drives feedback network or next-stage input; capable of sourcing/sinking ±20mA at 15V supply. |
| 2 (IN1–) | Amplifier 1 inverting input | Accepts feedback signal or inverted input path; high common-mode rejection supports differential measurement. |
| 3 (IN1+) | Amplifier 1 non-inverting input | Receives reference or sensor signal; supports rail-to-rail common-mode range including ground. |
| 4 (V–) | Negative supply / ground | Reference node for single-supply operation; must be low-impedance to minimize noise coupling. |
| 5 (IN2+) | Amplifier 2 non-inverting input | Independent channel input; enables dual-sensor monitoring or multi-loop control in compact space. |
| 6 (IN2–) | Amplifier 2 inverting input | Configurable for gain-setting or comparator hysteresis; shares same EMI-filtered input structure as IN1–. |
| 7 (OUT2) | Amplifier 2 output | Second independent output; supports redundant sensing, dual feedback paths, or auxiliary signal processing. |
| 8 (V+) | Positive supply | Accepts up to 36V; internal regulation ensures stable biasing across full supply range without external LDO. |
Key Features
| Feature | Design Value |
|---|---|
| Internal RF and EMI filter | Reduces susceptibility to conducted and radiated noise in motor drive and inverter applications, eliminating need for external ferrite beads or RC filters. |
| Rail-to-rail input (down to V–) | Enables direct interfacing with ground-referenced sensors (e.g., current shunts, RTDs) without external bias resistors or level shifters. |
| Low quiescent current (300µA/ch) | Supports always-on monitoring in battery-powered or energy-harvested systems while maintaining DC precision. |
| High open-loop gain (70V/mV min) | Ensures <0.1% gain error in unity-gain buffer and <1% error in 10× gain configurations across temperature and supply variations. |
| Capacitive load drive (100pF) | Allows direct connection to long PCB traces or ADC input capacitors without oscillation, simplifying layout in mixed-signal boards. |
Applications
| Motor Control Feedback | Industrial Power Supply Monitoring |
|---|---|
Use Scenario: Real-time current and voltage feedback in BLDC motor drivers and servo amplifiers. IC Role / Device Role / Timing Role: Dual-channel signal conditioning for phase current sensing and bus voltage scaling. Use Value: Ground-sense capability eliminates isolated amplifiers; 1.2MHz bandwidth supports PWM frequency harmonics up to 20kHz. |
Use Scenario: Output voltage regulation and overvoltage protection in AC/DC and DC/DC converters. IC Role / Device Role / Timing Role: Error amplifier in voltage feedback loop and comparator for shutdown threshold detection. Use Value: ±3mV offset ensures <0.5% regulation accuracy at 12V output; 36V rating covers transient surges on 24V input rails. |
| Automotive HVAC Sensor Interface | Smart Appliance Motor Drive |
Use Scenario: Signal conditioning for cabin temperature, pressure, and airflow sensors in vehicle climate control units. IC Role / Device Role / Timing Role: Low-drift amplifier for thermistor and bridge sensor outputs in harsh under-dash environment. Use Value: −40°C to +125°C operation and 2kV HBM ESD withstand ensure reliability without external protection diodes. |
Use Scenario: Torque and speed feedback in washing machine drum motors and refrigerator compressors. IC Role / Device Role / Timing Role: Dual op amp for current sensing and position signal amplification in compact inverter modules. Use Value: SOIC-8 footprint fits tight space constraints; 300µA/ch quiescent current reduces standby power in Energy Star-compliant designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904DR | Same SOIC-8 package; higher max input offset (±7mV) and lower ESD rating (500V HBM). | Limited to commercial-grade applications below 85°C ambient; unsuitable for automotive under-hood use. | Select LM2904DR only for cost-driven, non-automotive designs where offset and ESD margins are relaxed. |
| LM358BIDR | Identical electrical specs but rated for −40°C to +85°C (not +125°C); same 2kV HBM ESD. | Not qualified for extended-temperature automotive or industrial motor control; suitable for desktop PC and server PSU applications. | Choose LM358BIDR when ambient temperature stays ≤85°C and automotive qualification is not required. |
Compared with LM2904DR and LM358BIDR, the LM2904BIDR uniquely combines automotive-grade temperature range (−40°C to +125°C), low 3mV offset, and 2kV HBM robustness - making it the only option among the three qualified for under-hood motor control and high-reliability industrial inverters.
Availability
LM2904BIDR is available at Aetrix Electronics and suitable for motor control, industrial power supplies, and automotive HVAC systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904BIDR 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 high-reliability op amp design and automotive qualification.
The LM2904B series belongs to TI's industry-standard dual op amp product line, engineered specifically for ruggedized industrial and automotive applications demanding wide supply range, ground-sensing capability, and enhanced ESD/EMI resilience.
FAQ
What is the maximum operating temperature for LM2904BIDR?
The LM2904BIDR is specified for continuous operation from −40°C to +125°C ambient temperature. This extended range is validated per TI's automotive qualification standards and supports deployment in engine compartments, industrial motor drives, and outdoor power electronics where thermal stress exceeds commercial-grade limits. The device maintains all key parameters-including input offset voltage and quiescent current-within datasheet limits across this full range.
Does LM2904BIDR support single-supply operation with input referenced to ground?
Yes, LM2904BIDR supports true single-supply operation with its common-mode input voltage range extending to V– (ground). This allows direct connection of low-side current shunts, thermocouples, or resistive sensors without external biasing networks. The input stage remains linear and accurate down to 0V, enabling precise DC-coupled amplification in 3.3V, 5V, or 24V systems where ground is the natural reference point.
What is the typical quiescent current of LM2904BIDR at 5V supply?
The typical quiescent current of LM2904BIDR is 300µA per amplifier at 5V supply and 25°C, rising to 460µA maximum across −40°C to +125°C. This ultra-low power consumption enables always-on sensor monitoring in battery-backed systems, such as smart appliance standby modes or remote industrial telemetry nodes, without compromising DC accuracy or bandwidth.
Can LM2904BIDR drive a 100pF capacitive load without instability?
Yes, LM2904BIDR is characterized to drive up to 100pF capacitive load while maintaining stability and phase margin ≥56°, as confirmed in TI's datasheet Section 5.6. This capability eliminates the need for isolation resistors when interfacing directly with ADC input capacitors, long PCB traces, or EMI filter networks - simplifying layout and improving signal integrity in mixed-signal control boards.
Is LM2904BIDR pin-compatible with legacy LM2904 variants?
Yes, LM2904BIDR uses the standard 8-pin SOIC (D) package with identical pinout to LM2904, LM2904DR, and LM358BIDR. All share the same OUT1/IN1–/IN1+/V–/IN2+/IN2–/OUT2/V+ configuration per Figure 4-1 of the datasheet. This allows drop-in replacement in existing designs - provided system-level validation confirms compatibility with the improved offset, ESD, and temperature performance of the B-version.
LM2904BIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 300µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM2904BIDR FAQ
1.How can I place an order for LM2904BIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BIDR 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 LM2904BIDR reliable?
The price and inventory of LM2904BIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BIDR is usually 5 days.
3.What payment methods are accepted for LM2904BIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BIDR?
LM2904BIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BIDR 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 LM2904BIDR?
For technical support, including LM2904BIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BIDR requirements.
6.How does Aetrix verify that LM2904BIDR is sourced from the original manufacturer or authorized distributors?
All LM2904BIDR 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 LM2904BIDR meets industry standards.
7.What is the process for return or replacement of LM2904BIDR?
All LM2904BIDR units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BIDR, 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 LM2904BIDR part is unused and in its original packaging.
Return procedure for LM2904BIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BIDR Tags
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