NCV2250SN2T3G - 50ns Low-Voltage Rail-to-Rail Comparator | onsemi
Référence : NCV2250SN2T3G ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.12 | $1,12 |
| 10 | $0.96 | $9,60 |
| 100 | $0.78 | $78,00 |
| 500 | $0.62 | $310,00 |
| 1 000 | $0.49 | $490,00 |
NCV2250SN2T3G Présentation
A comparator is an analog active device that compares two input voltages and drives its output logic a discrete single (high or low) based on which input is more positive. Within the broader taxonomy, the NCV801A sits under analog comparator -> comparator -> amplifier/comparator IC -> semiconductor. Push-pull CMOS output topology differs from open-drain comparators (such as the classic LM393) by actively driving both high and low states, enabling faster edges and lower power in many applications. This category of comparator is essential in any mixed-signal system requiring fast logic-level translation from analog signals.
Key features include 1.8 V to 5.5 V single-supply operation, 200 mV beyond-the-rails input common-mode range, 50 ns typical propagation delay (100 mV overdrive), push-pull CMOS output, low quiescent current, and automotive-grade NCV prefix indicating PPAP-capable qualification per onsemi's automotive quality program. The 5-TSOP package consumes only a few square millimeters of PCB area, ideal for compact sensor and signal-conditioning modules.
The NCV2250 is built on a standard CMOS process with on-chip ESD protection diodes on the inputs and outputs. The rail-to-rail input stage uses a complementary differential pair topology that maintains linear behavior across the full common-mode range. Internally, hysteresis can be introduced via external positive feedback resistors to prevent output chattering on slow-moving inputs. The NCV2250SN2T3G is functionally identical to the NCS2250SN2T3G except for automotive-grade qualification and traceability.
Typical applications include zero-crossing detectors for line-voltage sensing, battery voltage monitoring in 12 V automotive systems, window comparators with multi-threshold detection, motor control feedback loops, sensor signal conditioning for microcontroller ADC front-ends, and threshold alarms in industrial control. The wide input common-mode range is particularly valuable for current-sense applications where the sense resistor sits at a high common-mode voltage close to the supply rail.
When designing with this part, ensure input signals stay within the ESD rating of the device and consider adding small input series resistance to limit fault current during over-voltage transients. Decoupling the supply pin with a 100 nF ceramic capacitor placed within 3 mm of the VCC pin is essential for stable high-frequency switching performance.
This page synthesizes distributor inventory, the parametric equivalent on the manufacturer's cross-reference database, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour NCV2250SN2T3G — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
NCS2250SN2T1G
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NCS2250SN2T3G
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NCV2252SN2T3G
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NCS2252SN2T3G
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LMV331SN7M5GF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TLV3201AIDBVR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NCV2250SN2T3G Valeurs maximales et caractéristiques électriques
| Comparator Type | General Purpose |
| Number of Channels | 1 |
| Type de sortie | Push-Pull, Rail-to-Rail |
| Propagation Delay (typ) | 50 ns (at 100 mV overdrive) |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Input Common-Mode Range | VSS - 0.2 V to VDD + 0.2 V (rail-to-rail, beyond-rails) |
| Output Swing (high) | Rail-to-rail (CMOS push-pull) |
| Plage de température de fonctionnement | -40 C to +125 C (automotive grade) |
| Boîtier | 5-TSOP (SOT-23-5 equivalent) |
| Type de montage | Surface Mount |
| Automotive Qualification | Yes - NCV prefix, PPAP capable |
| Statut RoHS | Compliant |
Configuration des broches de NCV2250SN2T3G
| Broche 1 | OUT — Push-pull comparator output |
| Broche 2 | VSS — Ground (negative supply) |
| Broche 3 | IN+ — Non-inverting comparator input |
| Broche 4 | IN- — Inverting comparator input |
| Broche 5 | VDD — Positive supply (1.8 V to 5.5 V) |
Applications typiques
NCV2250SN2T3G convient pour 6 applications: Zero-Crossing Detector for AC Line Sensing, Automotive Battery Voltage Monitor, Motor Current Limit Threshold Detector, Sensor Threshold Alarm for Industrial Control, Window Comparator for Multi-Level Voltage Detection, Fast Peak Detector Hold-and-Compare Circuit.
Zero-Crossing Detector for AC Line Sensing
The NCV2250SN2T3G's 50 ns propagation delay and rail-to-rail input stage make it well suited to zero-crossing detection on AC line voltage waveforms. Place the comparator input across a resistive divider that scales the 230 VAC line down to within the 1.8 V to 5.5 V supply rails, and use the push-pull output to drive a microcontroller interrupt or triac directly. The 200 mV beyond-the-rails input range allows accurate detection near the ground-referenced zero crossing, while the fast propagation delay minimizes phase error in dimmer and motor-speed control loops.
Recommandé
Automotive Battery Voltage Monitor
The NCV2250SN2T3G's NCV prefix denotes automotive-grade qualification, making it the right choice for 12 V battery monitoring modules. Configure the comparator as a window detector by comparing the scaled battery voltage against two precision reference levels to flag under-voltage and over-voltage conditions to the body control module. The 50 ns response time catches transients faster than the microcontroller ADC sample loop, and the -40 C to +125 C automotive temperature range covers under-hood operating conditions.
Recommandé
Motor Current Limit Threshold Detector
In brushed-DC and stepper motor drive circuits, the NCV2250SN2T3G can serve as the fast current-limit trip comparator by comparing the voltage across a low-side current-sense resistor against a reference. The push-pull output directly drives the gate driver or PWM logic to shut down the FET within microseconds of an over-current event, protecting the H-bridge from short-circuit damage. The 200 mV beyond-the-rails input range tolerates common-mode transients during FET switching, and the 50 ns propagation delay keeps the trip latency well below typical PWM switching periods.
Recommandé
Sensor Threshold Alarm for Industrial Control
The NCV2250SN2T3G provides a compact, low-power threshold alarm for industrial 4-20 mA sensor signals and 0-10 V analog transducers. Convert the transducer output to a voltage within the supply rails using a resistive divider or instrumentation front-end, then drive the comparator input; the push-pull output triggers the PLC digital input or alarm LED when the threshold is crossed. The 5-TSOP package occupies minimal PCB area, enabling dense multi-channel sensor-conditioning modules, and the rail-to-rail input handles ground-referenced and near-suprail signals without external level shifting.
Recommandé
Window Comparator for Multi-Level Voltage Detection
Two NCV2250SN2T3G comparators cascaded form a window detector that flags when a monitored voltage falls outside user-set upper and lower thresholds. This is widely used in power-supply good/bad signaling, battery state-of-charge indicators, and supervisory circuits where a single threshold is insufficient. The 50 ns propagation delay ensures simultaneous response on both edges of the window, and the push-pull outputs can be wire-ORed to a single interrupt line without external pull-ups, simplifying the interface to the host microcontroller.
Recommandé
Fast Peak Detector Hold-and-Compare Circuit
Pair the NCV2250SN2T3G with a peak-hold capacitor and diode to build a fast peak-detector-and-compare circuit used in pulse-width measurement, ultrasound echo detection, and instrumentation front-ends. The comparator compares the held peak against a threshold reference to generate a logic-level pulse marking the event time. The 50 ns response time allows precise timing measurements of short-duration pulses, and the rail-to-rail input range accommodates the full dynamic range of the held voltage signal without saturating the input stage.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour NCV2250SN2T3G — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | NCS2250SN2T1G | NCS2250SN2T3G | NCV2252SN2T3G | LMV331SN7M5GF | TLV3201AIDBVR |
|---|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | onsemi | Texas Instruments | Texas Instruments |
| Package | 5-TSOP | 5-TSOP - same | 5-TSOP - same | 5-TSOP - same | 5-TSOP - same | SOT-23-5 - same land pattern |
| Channels | 1 | 1 | 1 | 2 | 1 | 1 |
| Output Type | Push-Pull, Rail-to-Rail | Push-Pull, Rail-to-Rail | Push-Pull, Rail-to-Rail | Push-Pull, Rail-to-Rail | Open-Drain (needs pull-up) | Push-Pull, Rail-to-Rail |
| Propagation Delay (typ) | 50 ns | 50 ns | 50 ns | 50 ns | 600 ns | 40 ns |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Input Common-Mode Range | Beyond rails (VSS - 0.2 to VDD + 0.2 V) | Beyond rails | Beyond rails | Beyond rails | Rail-to-rail | Rail-to-rail |
| Automotive Qualification | Yes - NCV prefix, PPAP capable | No - commercial grade (NCS) | No - commercial grade (NCS) | Yes - NCV prefix | No | No (separate TLV3201Q variant exists) |
| Lifecycle Status | Obsolete | Active | Active | Active | Active | Active |
Principaux différenciateurs
- Beyond-the-rails input common-mode range (vs LMV331SN7M5GF)
- 12x faster propagation delay (vs LMV331SN7M5GF)
- Push-pull output eliminates external pull-up (vs LMV331SN7M5GF)
- Automotive-grade NCV qualification in same footprint (vs NCS2250SN2T1G)
Notes de conception
Estimated: at 5.5 V supply, the NCV2250SN2T3G typically draws well under 1 mA quiescent current per the NCS2250 family datasheet, but the dynamic supply current rises sharply during output transitions because the push-pull stage momentarily drives both the load capacitance and any DC load current. Place a 100 nF X7R ceramic decoupling capacitor within 3 mm of the VDD pin, and add a 1 uF to 10 uF bulk capacitor on the supply rail if the comparator is fed from a long trace or a regulator with high output impedance. This prevents supply droop from coupling into the input stage and degrading propagation delay.
The push-pull output of the NCV2250SN2T3G must never be tied directly to another push-pull output of the same device or another comparator - the resulting shoot-through current will damage both outputs. This produces inter-device bus contention in multi-comparator circuits. Always use open-drain devices or wire-OR with diodes when connecting multiple comparator outputs to a single line, or use the dedicated dual-channel NCV2252SN2T3G with separate output pins when two comparators are required in the same 5-TSOP footprint.
Keep input traces short to minimize parasitic capacitance and pickup of switching noise from the output or adjacent digital lines. A 50 ns comparator with a high-impedance input node is sensitive to capacitive coupling; route input traces over a continuous ground plane and avoid running them parallel to the OUT trace. Add a small hysteresis resistor (10 kOhm to 1 MOhm) from the output back to the non-inverting input to prevent output chatter on slow-moving or noisy input signals - this is standard practice for any rail-to-rail comparator in threshold-detection service.
The beyond-the-rails input common-mode range of the NCV2250SN2T3G (200 mV past each rail) enables ground-referenced sensing, but the input pins have ESD diodes to VSS and VDD that conduct when the input exceeds the absolute maximum rating. Series resistance of 1 kOhm to 10 kOhm on each input pin limits fault current during over-voltage transients and protects the ESD structure, at the cost of slightly increased propagation delay due to RC time constant with the input capacitance.
Informations de conformité
NCV prefix denotes onsemi automotive-grade qualification (PPAP capable). Per onsemi family datasheet, the part is RoHS compliant. Halogen-free status not stated in verified data.
