LM2902DG

LM2902DG is TI’s quad voltage comparator in the LM2902 family, with four independent comparators in a single package (open-collector outputs). It’s a low-power, single-supply device designed for general-purpose comparison tasks.
Key points
- Outputs are open-collector and require pull-up resistors.
- Typical supply range: broad, usually around 2 to 36 V (check datasheet for exact limits).
- Input common-mode range includes ground but does not reach the positive rail.
- Suitable for threshold/detection circuits: level shifting, zero-crossing, window detectors, battery monitoring, etc.
- Not rail-to-rail on inputs or outputs; use external hysteresis if needed to avoid oscillations.
- DG suffix indicates a specific package variant (check TI datasheet for pinout and mechanical details).
Usage notes
- Provide proper pull-ups on all outputs.
- Ensure inputs stay within the common-mode range.
- Consider hysteresis or positive feedback to improve noise immunity.
If you need detailed electrical specs, pinout, and recommended pull-up values, consult the LM2902DG datasheet.

Here are key features of the LM2902DG quad op-amp:
- Quad operational amplifiers in one package
- Very low power consumption (low quiescent current)
- Single-supply operation (typical 3 V to 32 V)
- Input common-mode range includes the negative rail (ground)
- Output can swing close to the negative rail (ground) with appropriate load; not rail-to-rail on the high side
- Unity-gain stable (suitable for buffers and various configurations)
- Internal frequency compensation (no external compensation required for stability)
- Broad temperature range (industrial, typically -40°C to +125°C)
- Available in packaging variants indicated by the DG suffix (different leaded/SMD options)
Note: For exact electrical limits (input offset, bias current, output swing, and recommended operating voltage range) please consult the TI LM2902DG datasheet.

LM2902DG is a quad op-amp in a 14-pin surface-mount package, typically SOIC‑14 (also available in DIP‑14 variants).

- Pin count: 14 pins (in the LM2902DG package)
- Function: Quad low-power operational amplifier — four independent op-amps (A–D) in one package with standard +/− input pins and outputs, intended for single-supply analog applications.

- Manufacturer: Texas Instruments (TI).
- Company type: American multinational semiconductor company that designs and manufactures analog and embedded processing integrated circuits for automotive, industrial, consumer electronics, and communications markets.

LM2902DG is a quad low-power op-amp for single-supply use. Common applications:
- Sensor signal conditioning and buffering
- Active filters (low/high/band-pass)
- Summing, integrating, and differentiating circuits
- Voltage followers for ADC/DAC front-ends
- DC servo loops and control systems
- Audio preamplification in portable devices
- Instrumentation/transducer interfaces
- General-purpose analog gain stages in battery-powered equipment