DG409DJ+ - Dual 4-Channel CMOS Multiplexer | Analog Devices
Référence : DG409DJ+ ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.99 | $3,99 |
| 10 | $3.99 | $39,90 |
| 100 | $3.99 | $399,00 |
| 500 | $3.99 | $1 995,00 |
| 1 000 | $3.99 | $3 990,00 |
DG409DJ+ Présentation
An analog multiplexer is an interface-switching IC that selects one of several analog terminals and connects it to a common output. The DG409 belongs to the CMOS analog multiplexer hierarchy, alongside demultiplexers and analog switches. Its digital address and control inputs determine the selected channel, while the internal CMOS switch array routes the selected analog signal in either direction.
Key features include two independent 4-channel sections, low on-resistance, low charge injection, low off leakage, and guaranteed channel matching and flatness over the specified signal range. The verified product information identifies the device as an improved replacement-compatible mux family and lists 4:1 operation, 100 ohm on-resistance, a 16-pin PDIP package, and a 5 V to 30 V supply range.
The device uses TTL/CMOS-compatible decoding logic, allowing it to be controlled by common digital interface voltages. Its multiplexed architecture reduces the number of external signal lines needed when several analog sources must be routed to one processing channel. Because the switch conducts equally well in both directions, the same device can support routing and demultiplexing arrangements when system timing and signal polarity are suitable.
Typical applications include audio-signal routing, communication systems, data-acquisition systems, guidance and control systems, sample-and-hold circuits, and test equipment. In these systems, the DG409DJ+ can select among multiple sensors, instrument channels, or signal sources before conversion, amplification, measurement, or further processing.
For PCB design, preserve the PDIP pin mapping and route analog traces away from high-current switching nodes. Confirm supply voltage, logic levels, signal amplitude, channel timing, leakage, and off-state behavior against the manufacturer datasheet. The verified data does not provide complete pricing, electrical limits, or a full pin list, so those values must be confirmed before release to production.
Alternatives de remplacement direct pour DG409DJ+ — 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 :
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DG409DJ+ Spécifications
| Product Type | Dual 4-channel CMOS analog multiplexer |
| Multiplexer Configuration | 4:1 |
| Number of Circuits | 2 circuits |
| Number of Channels per Circuit | 4 channels |
| On-Resistance | 100 ohm |
| Supply Voltage Range | 5 V to 30 V |
| Maximum Charge Injection | 15 pC |
| Input Off-Leakage Current | Less than 5 nA at 85 C |
| ESD Protection | Greater than 2000 V |
| Boîtier | 16-pin PDIP |
| Type de montage | Through-hole |
| Signal Conduction Direction | Bidirectional |
| Control Logic Compatibility | TTL/CMOS-compatible |
| Channel Matching | 8 ohm maximum |
| Flatness Over Signal Range | 9 ohm maximum |
| Primary Applications | Audio-signal routing, communication systems, data acquisition, guidance and control systems, sample-and-hold circuits, test equipment |
Guide de configuration des broches du DG409DJ+ 16-pin pdip
Configuration des broches du DG409DJ+ (boîtier 16-pin pdip). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour DG409DJ+.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
DG409DJ+ convient pour 6 applications: Audio Signal Routing, Data Acquisition Systems, Test Equipment Signal Selection, Sample-and-Hold Circuits, Communication System Routing, Guidance and Control Systems.
Audio Signal Routing
DG409DJ+ fits audio-signal routing because its two independent 4-channel sections can select among multiple analog paths while preserving bidirectional conduction. The verified device data identifies 100 ohm on-resistance and less than 5 nA input off-leakage at 85 C, helping control channel attenuation and unwanted leakage in a multi-source audio system. Place the IC between the source-select network and the downstream amplifier or codec, then verify impedance, bandwidth, channel matching, and audible switching transients. The 15 pC maximum charge injection is relevant when the selected signal feeds a high-impedance input, so prototype filtering and settling tests are recommended.
Recommandé
Data Acquisition Systems
DG409DJ+ is suitable for routing multiple analog inputs into a shared data-acquisition channel when system architecture uses two 4-channel sections. The verified Analog Devices application list includes data acquisition, and the device operates from 5 V to 30 V with bidirectional signal conduction. Use the address and enable controls to select the required source, then confirm settling behavior at the ADC input rate. The quoted 100 ohm on-resistance and 15 pC maximum charge injection must be evaluated against source impedance, ADC acquisition time, and the precision required by the measurement chain.
Recommandé
Test Equipment Signal Selection
DG409DJ+ can route test signals among instruments, sensor inputs, or stimulus outputs in a compact instrument architecture. Its dual 4-channel organization reduces the number of separate analog connections, while bidirectional conduction supports both source selection and signal distribution when the control sequence permits. The verified 5 V to 30 V supply range is useful for conventional test-equipment rails. Before production, check leakage, on-resistance, charge injection, switching time, and channel matching against the required measurement uncertainty; those complete values are not supplied in the verified snippets.
Recommandé
Sample-and-Hold Circuits
DG409DJ+ is applicable to sample-and-hold signal paths because the verified family information explicitly lists sample-and-hold circuits as an application. The device can select an analog source before the holding stage, while its bidirectional switch conduction allows system architects to evaluate both routing arrangements. Charge injection of 15 pC maximum can create a transient when the channel changes, so use a low-leakage hold capacitor and verify settling time against the switch resistance and downstream input capacitance. Exact switching time and hold-capacitor recommendations must be taken from the manufacturer datasheet.
Recommandé
Communication System Routing
DG409DJ+ can support analog routing in communication systems where multiple receive or transmit paths must be selected through common circuitry. The Analog Devices application description identifies communication systems, and the device's two 4-channel sections offer a practical way to organize routing when the board architecture uses shared amplifiers, converters, or filters. Because the verified data does not state dynamic frequency response, insertion loss, or switching speed, high-frequency designs must be checked against the complete datasheet and measured with the intended source and load impedances.
Recommandé
Guidance and Control Systems
DG409DJ+ is suitable for guidance and control applications that select among multiple analog command, feedback, or sensor channels. The verified Analog Devices page lists guidance and control systems, and the through-hole 16-pin PDIP package is compatible with conventional leaded PCB construction. In a control loop, keep the selected path's on-resistance and switching transient within the system's error budget, and confirm that the control logic levels meet the device requirements. Verify temperature range, supply tolerance, and channel leakage in the official datasheet before using it in safety-related or mission-critical equipment.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour DG409DJ+ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | DG409DJ | DG409DY+T | DG409DJZ | MAX303CPE+ |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Renesas Electronics | Analog Devices | Analog Devices |
| Package | 16-pin PDIP | 16-pin PDIP | 16-pin PDIP | 16-pin PDIP | 16-pin PDIP |
Principaux différenciateurs
- Improved DG409 family positioning (vs Industry-standard DG409)
- Two 4-channel sections (vs Single 8-channel single-ended multiplexer architecture)
- Bidirectional conduction (vs Directional-only signal-routing implementations)
- Through-hole PDIP integration (vs Surface-mount multiplexer options)
Notes de conception
Use the 16-pin PDIP footprint and verify the manufacturer's pin numbering before routing the PCB. Keep the common analog terminals and selected channel traces short, and place the device close to the source and destination circuitry so switching transients are not amplified by long traces. Because the verified information confirms the package but not the complete pin map, do not infer analog, address, enable, supply, or ground pin assignments from the product summary.
Treat the specified 100 ohm on-resistance as part of the signal-path design. Estimated insertion loss and settling behavior depend on source impedance, load capacitance, downstream input resistance, and the complete switching-time specification, none of which are available in the verified snippets. For high-impedance or precision nodes, include filtering only after measuring charge injection and leakage; the verified value of 15 pC maximum charge injection can create a meaningful transient when the impedance is high.
The verified operating range is 5 V to 30 V. Validate that the system's supply, control levels, and analog signal amplitude remain within the absolute maximum and recommended conditions in the manufacturer datasheet. Place local supply decoupling close to the IC pins according to the datasheet layout guidance. Do not derive a definitive bypass-capacitor value or power figure from the snippets alone, because switching dissipation and supply-current limits were not supplied.
Do not assume that a family-compatible DG408 or DG409 suffix is automatically interchangeable in every application. Confirm the exact suffix, package orientation, channel mapping, logic thresholds, voltage limits, timing, leakage, and ESD ratings. The Analog Devices family page states pin-compatible plug-in upgrade relationships, but the complete electrical comparison still belongs in the manufacturer datasheet.
Informations de conformité
The verified product snippets do not provide RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification information. ESD protection greater than 2000 V is stated in the verified distributor descriptions, but it is not an AEC-Q100 qualification claim.