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Texas Instruments LM2904BAIDR
- Part No.:
- LM2904BAIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904BAIDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,537
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Product details
Overview
LM2904BAIDR from Texas Instruments is a dual operational amplifier optimized for cost-sensitive industrial and automotive applications, featuring 3V–36V supply range, 300µA/ch quiescent current, 1.2MHz unity-gain bandwidth, ±2mV max input offset voltage at 25°C, and rail-to-rail input common-mode range including ground-enabling direct low-side current sensing in motor control and power supply feedback loops.
For engineers reviewing the LM2904BAIDR datasheet, LM2904BAIDR pinout, LM2904BAIDR application, or LM2904BAIDR equivalent, this page delivers verified electrical specs, SOIC-8 package details, functional pin mapping, real-world use cases in AC inverters and server PSUs, and two validated alternative parts with documented performance trade-offs.
Technical Context
The LM2904BAIDR implements a bipolar-input, internally compensated two-stage op amp architecture with rail-to-rail input capability (VCM = V− to V+ − 2V) and output swing within 20mV of V− and 1.61V of V+ at 5mA load. It supports single-supply operation down to 3V and includes integrated RF/EMI filtering for noise immunity in electrically harsh environments.
Designed for robustness, it features 2kV HBM ESD rating, −40°C to +125°C operating ambient temperature, and guaranteed 1.2MHz gain-bandwidth product with 0.5V/µs slew rate-making it suitable for closed-loop voltage regulation, sensor signal conditioning, and comparator replacement in high-reliability embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - enables direct integration into 12V/24V industrial rails and wide-input power supplies without external regulators. |
| Input Offset Voltage (max, 25°C) | ±2 mV - ensures <1% error in precision 100mV reference amplification or low-side shunt measurement at room temperature. |
| Quiescent Current per Channel | 300 µA (typ), 460 µA (max, −40°C to +125°C) - supports always-on monitoring circuits with sub-1mA total system bias. |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for 10kHz closed-loop response in active filters and DC-DC error amplifiers with phase margin ≥56°. |
| Common-Mode Input Range | V− to V+ − 2V - allows direct sensing of signals referenced to ground (e.g., current-sense amps, battery monitors). |
| Output Voltage Swing (V−) | 5 mV to 20 mV above V− at −40°C to +125°C - supports accurate zero-crossing detection and low-voltage logic interfacing. |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 3 requirements for industrial equipment without external protection. |
Pinout & Package
LM2904BAIDR is supplied in an 8-pin SOIC (D) package measuring 4.9mm × 6mm, with standard pinout compatible across LM2904-family devices. The package supports surface-mount reflow and is RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Drives feedback networks or downstream analog stages; capable of sourcing/sinking ±20mA. |
| 2 (IN1−) | Amplifier 1 inverting input | Accepts feedback signal or inverted input; high common-mode rejection (≥100 dB CMRR). |
| 3 (IN1+) | Amplifier 1 non-inverting input | Receives reference or sensor signal; operates down to V− (ground) for single-supply designs. |
| 4 (V−) | Negative supply / ground | Reference node for both amplifiers; must be low-impedance to minimize noise coupling. |
| 5 (IN2+) | Amplifier 2 non-inverting input | Independent input path; shares same V−/V+ rails but no internal crosstalk (≥120 dB channel separation). |
| 6 (IN2−) | Amplifier 2 inverting input | Used for differential amplification or second control loop; matched offset and bias characteristics to Pin 2. |
| 7 (OUT2) | Amplifier 2 output | Independent output stage; identical drive strength and settling time (4µs to 0.1%) as OUT1. |
| 8 (V+) | Positive supply | Accepts up to 36V; internal regulation ensures stable bias under varying line conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs at V−, eliminating need for level-shifting circuitry in ground-referenced sensing. |
| Integrated RF and EMI filter | Reduces susceptibility to 100MHz–1GHz noise without external ferrites or RC snubbers in motor drive PCBs. |
| Low quiescent current (300µA/ch) | Enables battery-backed monitoring functions with multi-year runtime on coin cells or supercaps. |
| High ESD tolerance (2kV HBM) | Survives handling and field surges without latch-up or parameter shift-critical for factory automation modules. |
| Extended temperature range (−40°C to +125°C) | Validated for under-hood automotive and outdoor HVAC control without derating or thermal management. |
Applications
| Motor Control Feedback | Server Power Supply Monitoring |
|---|---|
|
Use Scenario: Amplifying shunt resistor voltage in BLDC motor phase current sensing. IC Role / Device Role / Timing Role: Dual op amp configured as current-sense amplifier (INA) and overcurrent comparator. Use Value: ±2mV offset ensures <0.5% full-scale error at 100mV sense voltage; rail-to-rail input captures zero-current baseline accurately. |
Use Scenario: Monitoring +12V and +5V rails in redundant ATX-style server PSUs. IC Role / Device Role / Timing Role: Dual amplifier used for voltage error amplification and fan speed control signal conditioning. Use Value: 1.2MHz GBW supports fast transient response (<10µs overload recovery); 36V rating handles brown-out conditions. |
| AC Inverter Voltage Loop | Industrial PLC Analog Input |
|
Use Scenario: Closed-loop regulation of DC-link voltage in 3-phase solar string inverters. IC Role / Device Role / Timing Role: Error amplifier in voltage feedback path driving PWM controller reference. Use Value: 300µA/ch IQ minimizes standby loss; 2kV HBM withstands switching transients from IGBT gate drivers. |
Use Scenario: Signal conditioning for 4–20mA current-loop sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-stage amplifier: first stage for I/V conversion, second for filtering and level-shifting. Use Value: VCM to V− enables direct connection to sinking sensor outputs; SOIC-8 simplifies isolation barrier layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904BIDR | ±3mV max input offset (vs. ±2mV), otherwise identical specs and pinout. | Suitable where <0.5% gain error is acceptable; lower cost in high-volume industrial controls. | Select LM2904BIDR when offset budget allows 50% relaxation and BOM cost reduction is prioritized. |
| TLV2462CDR | Rail-to-rail I/O, 6.4MHz GBW, 550µA/ch IQ, 2.7–6V supply only. | Requires external LDO for >6V systems; superior AC performance but narrower voltage range. | Choose TLV2462CDR only for low-voltage, high-speed signal chains where 36V operation is unnecessary. |
Compared with LM2904BIDR, LM2904BAIDR provides tighter offset for precision current sensing; compared with TLV2462CDR, it trades bandwidth and rail-to-rail output for wide supply range and proven ruggedness in 24V+ industrial environments.
Availability
LM2904BAIDR is available at Aetrix Electronics and suitable for AC inverters, server power supply units, and industrial PLC analog input modules requiring stable component supply across extended temperature and long production lifecycles.
Supply support for LM2904BAIDR 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, embedded processing, and connectivity technologies, with decades of expertise in high-reliability op amp design.
The LM2904BAIDR belongs to TI's industry-standard dual op amp family, engineered for robust performance in cost-sensitive industrial, automotive, and power electronics applications where wide supply range and ground-sensing capability are essential.
FAQ
What is the maximum supply voltage for LM2904BAIDR?
The LM2904BAIDR supports a maximum supply voltage of 36V across its V+–V− terminals, with absolute maximum ratings specifying ±20V differential or 40V total. This allows direct use in 24V industrial systems and 36V battery-powered equipment without external regulation. Operation at 36V is validated across the full −40°C to +125°C temperature range per TI's SLOS068AB datasheet.
Does LM2904BAIDR support true single-supply operation with inputs at ground?
Yes, LM2904BAIDR supports true single-supply operation: its common-mode input voltage range extends to V− (ground), enabling direct connection of sensors or references referenced to ground-such as shunt resistors or thermocouples-without level-shifting circuitry. This is confirmed in Section 5.3 (Recommended Operating Conditions) and Table 4-1 (Pin Functions) of the official datasheet.
How does the input offset voltage of LM2904BAIDR compare to LM2904BIDR?
The LM2904BAIDR has a maximum input offset voltage of ±2mV at 25°C, while the LM2904BIDR is specified at ±3mV under identical conditions. Both maintain the same drift (±3.5µV/°C typical) and temperature range (−40°C to +125°C), making LM2904BAIDR preferable for applications demanding higher DC accuracy, such as precision current sensing or low-level signal amplification.
Is LM2904BAIDR pin-compatible with legacy LM2904 variants?
Yes, LM2904BAIDR uses the standard 8-pin SOIC (D) package with identical pinout to LM2904, LM2904B, and LM2904V-confirmed in Figure 4-1 and Table 4-1 of the TI datasheet. No PCB redesign is required when upgrading from LM2904BIDR or LM2904IDR, provided the system operates within the BA version's tighter offset and extended temperature specifications.
What thermal performance can be expected from LM2904BAIDR in SOIC-8 package?
In the SOIC-8 (D) package, LM2904BAIDR has a junction-to-ambient thermal resistance (RθJA) of 124.7°C/W, meaning a 300µA/ch quiescent current (0.6mA total) generates ~0.075°C rise above ambient under still-air conditions. For continuous 5mA output per channel, thermal modeling shows safe operation below 125°C junction temperature with standard 2-layer PCB copper pours, per TI's Thermal Information table (Section 5.4).
LM2904BAIDR 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:
- 2 mV
- 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
LM2904BAIDR FAQ
1.How can I place an order for LM2904BAIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BAIDR 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 LM2904BAIDR reliable?
The price and inventory of LM2904BAIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BAIDR is usually 5 days.
3.What payment methods are accepted for LM2904BAIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BAIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BAIDR?
LM2904BAIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BAIDR 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 LM2904BAIDR?
For technical support, including LM2904BAIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BAIDR requirements.
6.How does Aetrix verify that LM2904BAIDR is sourced from the original manufacturer or authorized distributors?
All LM2904BAIDR 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 LM2904BAIDR meets industry standards.
7.What is the process for return or replacement of LM2904BAIDR?
All LM2904BAIDR units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BAIDR, 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 LM2904BAIDR part is unused and in its original packaging.
Return procedure for LM2904BAIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BAIDR Tags
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