DG417DJ - 35 Ohm Precision CMOS Analog Switch | Vishay
Артикул: DG417DJ ✓ АктивенDG417DJ Обзор
An analog switch is a semiconductor interface that routes signals between input and output terminals under digital control. The DG417 belongs to the DG417, DG418, and DG419 family of monolithic CMOS switches. These devices occupy the interface-IC hierarchy above passive switches and analog multiplexers, providing controlled bidirectional or unidirectional signal paths in test equipment, data acquisition, battery-powered instruments, and industrial control systems.
Key characteristics include a maximum on-resistance of 35 ohm, a typical on-resistance of 20 ohm, and a turn-on time of 100 ns. The low-power specification is 35 nW, while the 15 V analog signal range supports instrumentation and control signals above conventional logic levels. TTL and CMOS compatibility makes the control interface straightforward for common digital circuits.
The DG417DJ uses monolithic CMOS construction to limit power consumption and leakage. Its fast switching action is useful for multiplexing analog measurement channels, while its low on-resistance helps preserve signal integrity when the source impedance is low. Exact off-leakage, channel capacitance, charge injection, and temperature limits should be confirmed in the manufacturer data sheet before finalizing a high-impedance or precision acquisition design.
Typical uses include portable data loggers, battery-powered test instruments, industrial process-control modules, military electronics, sample-and-hold systems, and general analog signal routing. For designs requiring higher current or lower resistance, the switch rating must remain within the load and signal-integrity limits of the complete analog path.
When laying out the PCB, place the DG417DJ close to the signal source and destination to minimize parasitic capacitance and resistance. Keep the analog and digital return paths disciplined, provide stable supply decoupling, and verify the control-pin logic levels. Reviewing the DG417 data sheet pin description and timing diagrams is essential when new switches are added to an existing board.
Аналоги без доработки для DG417DJ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с DG417DJ (тот же форм-фактор и посадочное место) — отличается по Mounting Type, Number of Circuits, Package.
DG417DJ-E3
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
DG417DY+
✅ Прямая замена ⚠️ Характеристики не провереныУточнить цену
Открыть даташит →DG417DJ Максимальные параметры и электрические характеристики
| Switch Type | SPST analog switch |
| Number of Circuits | 1 circuit |
| Configuration | 1:1 |
| Maximum On-Resistance | 35 ohm |
| Typical On-Resistance | 20 ohm |
| Turn-On Time | 100 ns |
| Analog Signal Range | 15 V |
| Maximum Supply Voltage | 44 V |
| Power Dissipation | 35 nW |
| Logic Compatibility | TTL and CMOS compatible |
| Technology | Monolithic CMOS |
| Корпус | 8-pin plastic DIP |
| Число выводов | 8 pins |
| Тип монтажа | Through-hole |
Руководство по цоколевке DG417DJ в корпусе 8-pin plastic dip
Цоколевка для DG417DJ (корпус 8-pin plastic dip). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для DG417DJ.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
DG417DJ подходит для 6 применениеs: Portable Data Acquisition, Battery-Powered Test Instruments, Industrial Process Control, Military Electronic Systems, Analog Signal Multiplexing, Legacy PCB Repair and Upgrade.
Portable Data Acquisition
The DG417DJ fits portable data-acquisition modules that must route sensor or instrumentation signals without adding substantial power consumption. Its monolithic CMOS design provides a specified 35 nW power requirement, while the 100 ns turn-on time supports prompt channel selection. The 35 ohm maximum on-resistance is suitable when the source impedance is modest and the ADC input can tolerate the resulting attenuation. Place the device close to the multiplexer or converter to minimize added capacitance and keep the analog return path continuous.
Рекомендуется
Battery-Powered Test Instruments
DG417DJ is appropriate for handheld meters and battery-powered test instruments that switch analog probes or conditioning paths. Its low 35 nW stated power requirement helps limit the load imposed by the switching element, and its TTL-compatible control simplifies interfacing with older test logic. With a 15 V analog signal range, the device can route compatible low-voltage signals. Confirm probe leakage, source impedance, and switch capacitance when accuracy at microvolt or nanoampere levels is important.
Рекомендуется
Industrial Process Control
The DG417DJ can route sensor and actuator signals in industrial process-control electronics where a compact, low-power SPST function is required. A 100 ns turn-on time provides rapid switching, while the 35 ohm maximum on-resistance can preserve low-level signals when the driving impedance is appropriately limited. The through-hole 8-pin plastic DIP package is useful for legacy control cards, test fixtures, and repair assemblies. Verify the process signal amplitude, grounding arrangement, and isolation boundaries before connecting external wiring.
Рекомендуется
Military Electronic Systems
DG417DJ suits compact military electronic modules that require an analog signal path with low power consumption and fast control response. Its monolithic CMOS architecture, 35 nW power rating, 15 V analog range, and 100 ns turn-on time support efficient signal routing in portable equipment. The 44 V maximum supply rating provides additional system-design headroom. Qualification requirements, temperature range, radiation performance, and long-term availability must be checked against the specific procurement specification before deployment.
Рекомендуется
Analog Signal Multiplexing
DG417DJ can be used as a single SPST element in an analog multiplexing arrangement for lower-speed measurement and control signals. Its 20 ohm typical on-resistance limits insertion loss when the source impedance is low, and the 100 ns switching action supports channel-selection schemes. For precision bridge or high-impedance sensor interfaces, switch leakage and capacitance must be checked against the required error budget. Multiple devices can build a multiplexer, subject to control timing and channel-to-channel matching requirements.
Рекомендуется
Legacy PCB Repair and Upgrade
DG417DJ is a practical choice for repairing or upgrading legacy through-hole analog boards that use the Vishay DG417 8-pin DIP footprint. Its 35 ohm maximum on-resistance and 100 ns turn-on time preserve the intended switching behavior in ordinary low-impedance circuits. The same-family alternatives support sourcing decisions when exact package construction or processing differs. Before replacement, check the original schematic, pin orientation, supply voltage, signal amplitude, and whether the board requires a specific manufacturer ordering code.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для DG417DJ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | DG417DJ-E3 | DG417DY |
|---|---|---|---|
| Brand | Vishay Intertechnology | Vishay Intertechnology | Vishay Intertechnology |
| Package | 8-pin plastic DIP | 8-pin plastic DIP | 8-pin ceramic DIP |
| Switch Type | SPST | SPST | SPST |
| Number of Circuits | 1 circuit | 1 circuit | 1 circuit |
| Maximum On-Resistance | 35 ohm | 35 ohm | 35 ohm |
| Typical On-Resistance | 20 ohm | 20 ohm | 20 ohm |
| Turn-On Time | 100 ns | 100 ns | 100 ns |
| Analog Signal Range | 15 V | 15 V | 15 V |
| Maximum Supply Voltage | 44 V | 44 V | 44 V |
| Power Requirement | 35 nW | 35 nW | 35 nW |
| Logic Compatibility | TTL and CMOS compatible | TTL and CMOS compatible | TTL and CMOS compatible |
| Processing Suffix | DJ | DJ-E3 | DY |
Ключевые отличия
- Identical DG417 family switching performance (против DG417DJ-E3)
- Ceramic-package option without changing the pin count (против DG417DY)
- Designed for low-power portable analog routing (против ADG417BRZ)
Заметки по проектированию
Place the DG417DJ beside the signal source or destination it serves. A short analog trace reduces parasitic resistance and capacitance, while a continuous ground reference limits switching transients coupled into the controlled signal. Keep the control trace away from sensitive analog inputs and connect supply decoupling according to the manufacturer application guidance.
Evaluate the complete signal path using the 35 ohm maximum on-resistance rather than the 20 ohm typical value. With a finite source impedance, the switch contributes attenuation, and source resistance plus on-resistance sets the resulting signal range. For high-frequency paths, include switch capacitance, load capacitance, and wiring capacitance when estimating usable bandwidth.
Do not treat the 15 V analog signal range as permission to exceed the 44 V maximum supply rating. Verify supply polarity, control-logic levels, signal amplitude, and the off-state leakage against the application. The 100 ns turn-on time describes switching action, not a guarantee of acceptable high-impedance measurement accuracy.
Confirm the package drawing, pin-one orientation, and schematic symbol before PCB layout or replacement. The DJ ordering code uses an 8-pin plastic DIP, while the DY ordering code uses a ceramic DIP. Both have eight pins and can be candidates for socket-compatible use, but mechanical details, temperature capability, and assembly requirements must be checked separately.
Информация о соответствии
Compliance status depends on the exact ordering code and current manufacturer documentation; the E3 suffix identifies a distinct ordering configuration and should not be treated as a complete compliance declaration.
