ADCMP391ARZ

ADCMP391ARZ is an Analog Devices high-speed comparator in an 8-lead RoHS package (ARZ). It’s designed for fast, precise threshold decisions in mixed-signal systems such as ADC front-ends, clock/data recovery, PWM control, and window detectors.
Key points:
- Suitable for single-supply operation with a wide input common-mode range.
- Very fast propagation delay (nanoseconds range) with low input offset.
- Flexible output stage (CMOS/TTL-friendly; use pull-up if open-drain is used).
- Optimized for low power in its speed class.
Typical applications include ADC driver front-ends, high-speed comparators, zero-cross/window detection, motor control, and digital communication interfaces.
Note: exact electrical specs (supply range, input/output behavior, hysteresis, pinout) depend on the specific variant. For precise data, refer to the current ADCMP391ARZ datasheet.

Here are typical features of the ADCMP391ARZ (Analog Devices):
- High-speed single-supply comparator
- Supply voltage: 2.7 V to 5.5 V
- Input common-mode range includes ground
- Open-drain (or open-collector) output with external pull-up
- Very fast propagation delay (typical on the order of a few nanoseconds)
- Hysteresis for noise immunity
- Low input bias/offset suitable for precise threshold sensing
- Low power consumption
- Temperature range: -40°C to +125°C (industrial)
- Package: 8-pin MSOP (ARZ)
Note: verify exact electrical specs (offset, current, delay, hysteresis levels) from the official datasheet for your operating conditions.

- Pin count: 8 pins (8-pin package, e.g., SOIC/MSOP variants)
- Function: High-speed voltage comparator. It compares the non-inverting input (IN+) to the inverting input (IN−) and produces a logic-level output indicating which input is higher (single-supply operation).

- Manufacturer: Analog Devices, Inc. (ADI)
- What kind of company: A global American multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits for a wide range of industries.

ADCMP391ARZ is a high-speed comparator suitable for:
- High-speed PWM controllers and switch-mode power supplies (threshold/detect signals)
- Zero-crossing, over/under-voltage, and current-sense detection
- Peak detectors, peak/holding timing circuits, and fast waveform monitoring
- Clock recovery, timing, and high-speed data/demodulation receivers
- Window comparators and level-detection for protection schemes
- Motor-control sensing and protection (fault/overcurrent sensing)
Concise and flexible for any precise threshold detection in fast analog/digital interfaces.

8-pin SOIC (Small Outline Integrated Circuit) package, RoHS-compliant.