Product Overview
Low-Power Dual Operational Amplifier, Single-Supply, SOIC-8 SMD Package
Condition
Unused NOS - New Old Stock. Sourced through our network of surplus and legacy suppliers. Evaluation: Visual inspection only. Function testing not performed. Backed by our no-hassle satisfaction guarantee.
Ships same business day from Idaho. Packed carefully.
Product Overview
National Semiconductor LM2904M - low-power dual operational amplifier in an SOIC-8 surface-mount package. Two internally compensated op-amps on a single chip. Operates from a single positive supply, eliminating the need for a dual-rail power source. Output swings to ground, enabling direct sensing near GND. Compatible with all logic families. Power consumption is low enough for battery-operated designs.
Key Features
- Two independent op-amp channels on one IC
- Supply voltage: 3V to 26V (single supply) or ±1.5V to ±13V (dual supply)
- Gain bandwidth product: 1 MHz
- Input offset voltage: 2mV typical, 7mV max
- Operating temperature: -40°C to +85°C
- Package: SOIC-8 (8-pin surface-mount)
- Output swings to ground - no negative rail required
- Compatible with all forms of logic
Applications
- Automotive ECU sensor interfaces and dashboard instrument clusters
- 4-20mA current loop transmitters and transducer amplifiers
- Battery-operated portable equipment
- Legacy industrial control boards and signal conditioning
Frequently Asked Questions
What power supply does the LM2904M require?
Single supply: 3V to 26V. Dual supply: ±1.5V to ±13V. No negative voltage rail is required for single-supply operation.
Is this a rail-to-rail output op-amp?
No. The output does not swing to the positive supply voltage - it typically stops approximately 1.5V below the supply rail. The output does swing to ground on the low side.
What is the difference between the LM2904M and LM2904N?
The "M" suffix indicates the SOIC-8 surface-mount package. The "N" suffix indicates a DIP-8 through-hole package. These are not pin-compatible on a board - verify your footprint before ordering.
Is this suitable for audio or high-speed signal applications?
The 1 MHz gain bandwidth and moderate slew rate make it suitable for low-frequency analog signal conditioning, sensor interfaces, and DC gain blocks. It is not recommended for high-speed video, RF, or high-fidelity audio applications requiring wide bandwidth or low noise.
These are original National Semiconductor parts. Buyers sourcing for period-accurate repair of 1980s-90s automotive or industrial boards should note the National Semi origin.
