LM2904N - Dual 1 MHz 26 V Op Amp | Texas Instruments
Teilenummer: LM2904N ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.1147 | $0,11 |
| 10 | $0.1147 | $1,15 |
| 100 | $0.1147 | $11,47 |
| 500 | $0.1147 | $57,35 |
| 1.000 | $0.1147 | $114,70 |
LM2904N Übersicht
An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify the difference between two input voltages. Internally compensated LM2904N amplifiers are voltage-amplifier building blocks within the operational-amplifier, analog IC, and semiconductor hierarchies. Their differential inputs support filtering, buffering, summing, comparison, and feedback-control functions without requiring an external compensation network.
The verified product information identifies two amplifiers, single-supply or split-supply use, low power drain, and a common-mode input range extending to ground or VEE. Its internally frequency-compensated architecture simplifies closed-loop design, while the dual configuration places two matched-function amplifiers in one package. However, the supplied data does not state output-current capability, input-offset voltage, input-bias current, slew rate, noise density, or operating-temperature limits.
A key design consideration is supply configuration. Although the official TI product-page snippet specifies a 26 V product family designation, engineers must consult the exact manufacturer datasheet before setting rail voltage, input common-mode limits, output swing, and load current. Decoupling capacitance, input impedance, feedback topology, output loading, and thermal dissipation also remain datasheet- and layout-dependent.
Typical uses include two-channel sensor conditioning, low-frequency active filters, audio preamplification, comparator-style signal detection with suitable saturation limits, control-loop buffering, and general dual-rail analog signal processing. The 1 MHz bandwidth is most appropriate for low-to-moderate-frequency signals rather than high-speed precision instrumentation.
This data page combines verified manufacturer and distributor facts, pin-compatible replacement screening, and practical engineering guidance. It deliberately leaves unverified electrical values marked for completion rather than inferring specifications from related dual-amplifier families.
Drop-in-Alternativen für LM2904N – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit LM2904N (gleiche Bauform und Footprint) – abweichend in Mounting Type, Common-Mode Input Range, Input Type, Package, RoHS Status.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
LM2904N
✅ Drop-In✓ Auf Lager
$0.1147 / Stück
Datenblatt ansehen →LM2904N/NOPB
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
KA358
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LM2904N Grenzwerte & elektrische Eigenschaften
| Amplifier Count | 2 amplifiers |
| Product Family Supply Designation | 26 V |
| Gain-Bandwidth Product | 1 MHz |
| Topologie | Dual independent operational amplifiers |
| Compensation | Internally frequency compensated |
| Supply Configuration | Single supply or split supply |
| Common-Mode Input Range | Extending to ground/VEE |
| Ausgangstyp | Push-pull |
| Gehäuse | 8-pin PDIP |
| Montageart | Through-hole |
| Input Type | Differential |
| Product Classification | Standard general-purpose amplifier |
| RoHS-Status | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
LM2904N 8-pin pdip Pinbelegungsleitfaden
Pinbelegung für LM2904N (8-pin pdip-Gehäuse). Dieses analoge Bauteil verfügt über Eingangs-, Ausgangs- und Versorgungspins. Offset-Null-, Kompensations- und Enable-Pin-Konfigurationen entnehmen Sie dem Herstellerdatenblatt. Ideal für Signalaufbereitung und Verstärkerschaltungen.
Keine detaillierten Pinbelegungsdaten verfügbar für LM2904N.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
LM2904N ist geeignet für 6 Anwendungs: Two-Channel Sensor Conditioning, Low-Frequency Active Filters, Audio Preamplification, Industrial Control Interfaces, Portable Sensor and IoT Nodes, Teaching and Prototyping Circuits.
Two-Channel Sensor Conditioning
The two independent amplifiers in LM2904N can condition two related sensor outputs when the signals fall within the device's verified 1 MHz bandwidth and available common-mode range. Each channel can implement a voltage buffer, non-inverting gain stage, or active-filter section with external resistors and capacitors. The internally frequency-compensated architecture reduces the need for external compensation, while the 8-pin PDIP package simplifies through-hole prototyping. Confirm the exact input-offset, bias-current, noise, supply-voltage, and common-mode limits before selecting resistor and capacitor values, especially for high-impedance sensors where bias-current effects can dominate.
Empfohlen
Low-Frequency Active Filters
LM2904N is suitable for first and second-order active-filter experiments and control panels because each internally compensated amplifier can work with external resistors and capacitors. The verified 1 MHz gain-bandwidth product leaves ample bandwidth for many low-frequency filter stages, including audio, vibration, and industrial process-control bands. Component tolerances and amplifier open-loop behavior will influence cutoff accuracy, gain, and phase. Validate stability, common-mode headroom, output swing, and load drive in the intended rail-to-rail operating conditions; none of those detailed limits was available in the supplied snippets.
Empfohlen
Audio Preamplification
LM2904N can serve as a general-purpose dual audio preamplifier for low-to-moderate-frequency signals, using one channel per stereo or differential audio path. Its verified 1 MHz bandwidth exceeds the bandwidth commonly needed for baseband audio, and its dual internal frequency compensation supports straightforward closed-loop gain configurations. The through-hole 8-PDIP package is useful for hand-built and educational equipment. Audio performance still depends on the exact noise, distortion, output-swing, slew-rate, and load specifications, which must be verified from the manufacturer data sheet before setting gain or driving a particular output stage.
Empfohlen
Industrial Control Interfaces
The dual LM2904N architecture can buffer two low-frequency control or measurement channels in industrial equipment while retaining a familiar through-hole package for serviceability. Its verified support for single- or split-supply operation allows grounding around zero-centered signals, and the common-mode range extending toward ground or VEE is useful for sensor interfaces. Designers must still budget analog input range, output swing, supply noise rejection, and transient margin. The 26 V family designation is not a substitute for the exact supply-voltage and absolute-maximum tables required by industrial equipment safety and reliability programs.
Empfohlen
Portable Sensor and IoT Nodes
LM2904N can amplify or buffer slow sensor channels in a battery-powered IoT node when its supply current and common-mode limits fit the available power budget. The verified source does not provide a numeric quiescent current, so battery-life calculations cannot be completed from the supplied evidence. Two channels in one package can reduce board-space needs in prototypes, while internal frequency compensation supports standard feedback networks. Measure input bias current with high-impedance sensors and verify supply rejection, noise, output range, and shutdown requirements before adopting it for low-energy production hardware.
Empfohlen
Teaching and Prototyping Circuits
LM2904N is a practical choice for electronics education because it packages two independent, internally frequency-compensated amplifiers in an easy-to-probe 8-pin PDIP. Students can implement inverting and non-inverting amplifiers, integrators, filters, comparators, and feedback-control demonstrations without a complex compensation network. The verified 1 MHz bandwidth is sufficient for many audible and low-frequency control experiments. Before using it as a comparator, account for output saturation and recovery behavior; before using it as a precision reference amplifier, check offset, drift, bias current, and noise from the exact data sheet.
Empfohlen
Technische Referenzdaten für LM2904N – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | LM2904N | LM2904N/NOPB | KA358 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics |
Wichtigste Unterscheidungsmerkmale
- Verified dual internally compensated architecture (vs. KA358)
- Through-hole DIP land-pattern continuity (vs. LM2904D)
- Single- and split-supply architecture (vs. LM2904D)
Designhinweise
Confirm the exact recommended supply range before connecting LM2904N. The verified 26 V label is a product-family designation, not a substitute for the ordering-specific operating and absolute-maximum tables. Place a local bypass capacitor near each supply pin and provide a low-impedance return path. For single-supply operation, explicitly check whether the signal can remain inside the common-mode range and whether the output can reach the required swing at the selected load.
Keep op-amp input and feedback routes short, preserve a continuous ground or supply-return plane, and avoid routing high-current or switching-node traces adjacent to sensitive amplifier inputs. The through-hole package provides forgiving prototype accessibility, but long breadboard or lead wires can add parasitic capacitance and pickup. For high-source-impedance sensors, minimize leakage paths and guard routing because the supplied evidence does not provide input-bias-current values.
Do not assume that an LM2904-family name guarantees drop-in interchangeability across package suffixes or manufacturers. LM2904D is described in the supplied comparison result as SOIC-8, while LM2904N is PDIP-8; those packages require different PCB land patterns. Also do not infer the full LM2904N supply range from the 26 V snippet. Verify pinout, supply limits, common-mode range, offset, bias current, bandwidth, slew rate, noise, output swing, and temperature grade from the exact data sheet.
Internal frequency compensation removes the usual need for a discrete compensation capacitor, but it does not guarantee stability with every external network. Check the manufacturer's recommended noise-gain and capacitive-load conditions, especially when driving long cables, ADC inputs, loudspeakers, or other capacitance. At 1 MHz gain-bandwidth product, reserve bandwidth for the intended closed-loop gain and evaluate phase margin if unusually high gain or additional poles are introduced.
Compliance-Informationen
The verified search results do not provide suffix-specific environmental or automotive declarations. No compliance claim should be inferred from the component category or general distributor availability.
