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Texas Instruments LM2904BIDGKR
- Part No.:
- LM2904BIDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM2904BIDGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,713
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Product details
Overview
LM2904BIDGKR 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, rail-to-rail input (including ground), and ±3mV max input offset voltage at 25°C. It serves as a precision signal conditioning and feedback amplification stage in motor control, power supply monitoring, and sensor interface circuits.
For engineers reviewing the LM2904BIDGKR datasheet, LM2904BIDGKR pinout, LM2904BIDGKR application, or LM2904BIDGKR equivalent, this page delivers verified electrical specs, VSSOP-8 package details, thermal performance data, EMI-filtered operation, and validated alternative options for design-in and BOM optimization.
Technical Context
The LM2904BIDGKR implements a bipolar-input, internally compensated two-amplifier architecture with common-mode input voltage range extending to ground-enabling single-supply sensing of low-side current shunts and thermistor networks. Its 1.2MHz gain-bandwidth product supports stable closed-loop operation at unity gain without external compensation.
It features integrated RF/EMI filtering on both inputs and outputs, 2kV HBM ESD rating, and guaranteed operation from –40°C to +125°C ambient-making it suitable for under-hood automotive modules and industrial PLC analog I/O stages where noise immunity and temperature robustness are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - supports wide-input industrial power rails and battery-backed systems without LDO pre-regulation. |
| Quiescent Current | 300µA per channel (typ) - enables ultra-low-power operation in always-on monitoring circuits. |
| Unity-Gain Bandwidth | 1.2MHz - sufficient for DC–100kHz closed-loop control loops (e.g., motor current regulation, SMPS error amplifiers). |
| Input Offset Voltage | ±3mV max at 25°C - ensures ≤0.1% full-scale error in 3V reference-based 12-bit ADC front-ends. |
| Common-Mode Input Range | Includes ground (V–) - allows direct interfacing to low-side current sense resistors and grounded sensors. |
| ESD Rating (HBM) | ±2000V - meets IEC 61000-4-2 Level 3 for system-level surge immunity in industrial environments. |
| Operating Temperature | –40°C to +125°C - qualified for under-dash automotive ECUs and high-temperature industrial drives. |
Pinout & Package
VSSOP-8 (DGK) package: 3mm × 4.9mm body, 0.5mm pitch, exposed pad optional, RoHS-compliant, moisture sensitivity level 1 (MSL-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Drives feedback network or load; capable of sourcing/sinking ±20mA at 15V supply. |
| 2 (IN1–) | Amplifier 1 inverting input | Accepts differential or single-ended signals; common-mode range extends to V–. |
| 3 (IN1+) | Amplifier 1 non-inverting input | High-impedance node (4GΩ||1.5pF); used for reference biasing or sensor excitation. |
| 4 (V–) | Negative supply / ground | Reference for single-supply operation; must be connected directly to PCB ground plane. |
| 5 (IN2+) | Amplifier 2 non-inverting input | Independent input path; enables dual-channel signal conditioning in compact space. |
| 6 (IN2–) | Amplifier 2 inverting input | Supports differential configurations; shares same CMVR and EMI filter as IN1–. |
| 7 (OUT2) | Amplifier 2 output | Electrically isolated from OUT1; supports independent gain/feedback networks. |
| 8 (V+) | Positive supply | Accepts up to 36V; internal protection prevents latch-up during transient overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Internal RF and EMI filter | Reduces susceptibility to 30MHz–1GHz radiated emissions without external ferrite beads or RC snubbers. |
| Rail-to-rail input (to ground) | Enables accurate zero-volt referenced measurements-critical for shunt-based current sensing in motor drivers. |
| Unity-gain stable | Eliminates need for external compensation capacitors in buffer, comparator hysteresis, or integrator designs. |
| Low quiescent current | Permits use in battery-powered diagnostics modules with multi-year standby life (e.g., <10µA total system sleep current). |
| High open-loop gain (70V/mV) | Ensures ≤0.01% gain error in 100× closed-loop configurations with 10kΩ feedback networks. |
Applications
| Motor Control Feedback | Power Supply Monitoring |
|---|---|
|
Use Scenario: Amplifying voltage across low-side current-sense resistor in BLDC inverter gate driver stage. IC Role / Device Role / Timing Role: Dual op-amp provides isolated current feedback (CH1) and bus voltage scaling (CH2) for MCU ADC input. Use Value: Ground-referenced input eliminates need for isolated amplifiers; 300µA/ch minimizes heat rise in enclosed motor housing. |
Use Scenario: Scaling 12V/24V rail voltage to 0–3.3V range for microcontroller ADC sampling in telecom PSU. IC Role / Device Role / Timing Role: Precision resistor-divider buffer with matched gain and offset error correction. Use Value: ±3mV offset ensures <0.1% full-scale error at 3.3V ADC reference; 1.2MHz GBW rejects switching noise harmonics. |
| Industrial Sensor Interface | Automotive Cabin Climate Control |
|
Use Scenario: Conditioning PT100 RTD bridge output in programmable logic controller analog input module. IC Role / Device Role / Timing Role: Instrumentation-grade front-end with programmable gain and cold-junction compensation. Use Value: –40°C to +125°C operation maintains calibration stability across factory floor temperature swings; EMI filtering suppresses 2.4GHz Wi-Fi interference. |
Use Scenario: Amplifying thermistor voltage in HVAC blend door actuator feedback loop. IC Role / Device Role / Timing Role: Dual-channel signal conditioner for temperature sensing and motor position feedback. Use Value: VSSOP-8 footprint saves board space in tight dashboard assemblies; 2kV HBM withstands ESD events during service technician handling. |
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 | SOIC-8 package (4.9mm × 6mm); identical electrical specs but higher RθJA (124.7°C/W vs. 181.4°C/W for DGK). | Suitable for through-hole prototyping or legacy board rework; less suited for thermally constrained surface-mount layouts. | Select when board real estate permits larger footprint and thermal management uses heatsinking or airflow. |
| LM2904BQDRQ1 | AEC-Q100 Grade 1 qualified (–40°C to +125°C); same VSSOP-8 package; enhanced process control for automotive production traceability. | Required for safety-critical ADAS power domains and infotainment power management where PPAP compliance is mandatory. | Choose for new automotive designs requiring OEM qualification; not drop-in due to different part numbering and test documentation requirements. |
Compared with LM2904DR and LM2904BQDRQ1, the LM2904BIDGKR offers optimal thermal resistance in space-constrained industrial modules while maintaining full functional equivalence-making it ideal for high-volume embedded systems where footprint, cost, and manufacturability are prioritized over automotive certification.
Availability
LM2904BIDGKR is available at Aetrix Electronics and suitable for motor control feedback, power supply monitoring, industrial sensor interface, and automotive cabin climate control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904BIDGKR 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 over 50 years of op-amp innovation and broad industrial, automotive, and consumer market presence.
The LM2904B series belongs to TI's industry-standard dual op-amp product line, designed specifically for cost-sensitive, high-reliability applications demanding wide supply range, ground-sensing capability, and robust EMI immunity in harsh environments.
FAQ
What is the maximum operating junction temperature for LM2904BIDGKR?
The LM2904BIDGKR has an absolute maximum junction temperature of 150°C. Under recommended operating conditions (–40°C to +125°C ambient), its thermal resistance (RθJA) is 181.4°C/W in the VSSOP-8 package. Designers should verify PCB copper area and airflow to ensure TJ remains below 125°C for long-term reliability in continuous operation.
Does LM2904BIDGKR support rail-to-rail output swing?
No, the LM2904BIDGKR does not provide rail-to-rail output swing. Its output can swing within ~1.4V of V+ and ~0.1V of V– (at 1mA load). For example, with V+ = 12V and V– = 0V, typical output range is 0.1V to 10.6V. This limitation must be accounted for in precision reference buffering or low-headroom applications.
Can LM2904BIDGKR drive capacitive loads directly?
Yes, the LM2904BIDGKR is characterized to drive up to 100pF capacitive loads stably. For loads exceeding 100pF (e.g., long cables or ADC input capacitance), a series isolation resistor (typically 10–100Ω) between the op-amp output and the load is recommended to maintain phase margin and prevent oscillation.
Is LM2904BIDGKR pin-compatible with legacy LM2904 variants?
Yes, the LM2904BIDGKR uses the standard dual op-amp pinout (V+, IN2–, IN2+, V–, IN1+, IN1–, OUT1, OUT2) and is fully pin-compatible with all LM2904 family members in VSSOP-8 (DGK) packaging-including LM2904, LM2904A, and LM2904BA. No PCB layout changes are required for upgrade.
What is the typical input bias current of LM2904BIDGKR at 125°C?
The LM2904BIDGKR exhibits a typical input bias current of –35nA at 25°C, degrading to –50nA maximum at –40°C to +125°C. This low, predictable bias enables high-impedance sensor interfaces (e.g., pH electrodes or piezoelectric transducers) without significant offset drift across the full operating temperature range.
LM2904BIDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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:
- 30 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-VSSOP
LM2904BIDGKR FAQ
1.How can I place an order for LM2904BIDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BIDGKR 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 LM2904BIDGKR reliable?
The price and inventory of LM2904BIDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BIDGKR is usually 5 days.
3.What payment methods are accepted for LM2904BIDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BIDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BIDGKR?
LM2904BIDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BIDGKR 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 LM2904BIDGKR?
For technical support, including LM2904BIDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BIDGKR requirements.
6.How does Aetrix verify that LM2904BIDGKR is sourced from the original manufacturer or authorized distributors?
All LM2904BIDGKR 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 LM2904BIDGKR meets industry standards.
7.What is the process for return or replacement of LM2904BIDGKR?
All LM2904BIDGKR units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BIDGKR, 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 LM2904BIDGKR part is unused and in its original packaging.
Return procedure for LM2904BIDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BIDGKR Tags
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