DG407DJ+ - Dual 8:1 CMOS Analog Multiplexer | Analog Devices
MPN: DG407DJ+ ✓ Hoạt độngDG407DJ+ Tóm tắt
An analog multiplexer is a switching interface that connects one source path to one of several signal paths. The DG407 belongs to the broader analog switch and multiplexer hierarchy, where it enables one physical signal to be routed among multiple sensors, test points, amplifiers, or data-conversion channels. Its differential 8-channel configuration makes it useful when the switched signal must be balanced or when two related signals are selected together.
Key features include a maximum on-resistance of 100 ohm, guaranteed channel matching of 8 ohm maximum, and signal-range flatness of 9 ohm maximum. Charge injection is limited to 15 pC maximum, reducing the switching transient that can otherwise disturb precision measurement nodes. The on-resistance conducts equally well in either direction, while TTL- and CMOS-compatible address inputs simplify control from digital logic.
Internally, the DG407 uses an array of 16 analog switches and a digital decode circuit for channel selection. A voltage reference establishes the logic thresholds, and the enable input permits device selection when more than one multiplexer is installed. These functions allow engineers to construct larger switched-channel systems while retaining standardized digital control.
Typical applications include battery-cell measurement, automated test equipment, data acquisition, industrial process monitoring, instrumentation, and multiplexed sensor interfaces. The device is particularly appropriate when a low-frequency analog node must be routed among several inputs with controlled resistance, matching, and charge injection.
Designers should account for the 100 ohm maximum on-resistance when calculating source impedance and settling behavior. Input and ground routing should minimize parasitic resistance and coupling, while digital address and enable traces should be kept away from sensitive analog conductors. The 28-pin PDIP package also requires adequate through-hole spacing and suitable protection from mechanical or moisture exposure.
This product page combines the verified manufacturer and distributor information with package-specific selection guidance, data gaps, pricing context, and same-footprint alternatives. It distinguishes directly documented variants from candidates that require independent pin, logic-level, and absolute-maximum-rating verification before substitution.
Bộ thay thế dễ dàng lắp đặt cho DG407DJ+ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
DG407DJ
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DG407DY+
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DG507AJ+
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DG407DJ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DG407DJ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DG407DJ+ Thông số kỹ thuật
| Multiplexer Configuration | Dual 8:1 multiplexer |
| Channel Architecture | 16-channel dual 8-channel or differential 8-channel |
| Maximum On-Resistance | 100 ohm |
| Maximum On-Resistance Matching | 8 ohm |
| Maximum On-Resistance Flatness | 9 ohm |
| Maximum Charge Injection | 15 pC |
| Signal Conduction Direction | Bidirectional |
| Digital Control Compatibility | TTL- and CMOS-compatible |
| Address Decode Circuit | Internal digital channel-selection decode |
| Logic Threshold Reference | Internal voltage reference |
| Enable Function | Enable input for device selection and multiplexing |
| Hộp | 28-pin PDIP |
| Kiểu lắp đặt | Through-hole |
| Analog Switch Count | 16 analog switches |
Hướng dẫn cấu hình chân DG407DJ+ 28-pin pdip
Cấu hình chân cho DG407DJ+ (28-pin pdip gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho DG407DJ+.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
DG407DJ+ phù hợp cho 6 Áp dụngs: Battery-Cell Measurement, Automated Test Equipment, Data-Acquisition Systems, Industrial Process Monitoring, Precision Instrumentation, Multiplexed Sensor Interfaces.
Battery-Cell Measurement
The DG407DJ+ fits multiplexed battery-cell monitoring because its dual 8:1 arrangement can route related differential signals through a controlled switching matrix. The manufacturer documents maximum channel matching of 8 ohm, flatness of 9 ohm, and charge injection of 15 pC, all of which help limit measurement variation between sequentially selected cells. A practical implementation can place the device between cell-monitoring inputs and a shared amplifier or converter. Engineers should verify leakage, settling time, protection requirements, and common-mode limits against the cell range before assigning the multiplexer.
Được đề xuất
Automated Test Equipment
The DG407DJ+ is appropriate for automated test equipment that must connect a shared measurement channel to multiple test points. Its 16 internal analog switches, dual 8-channel organization, and enable input permit two routing banks to be selected by common digital control. The documented 100 ohm maximum on-resistance adds source impedance, while 8 ohm matching and 9 ohm flatness reduce channel-to-channel variation. Use short, shielded analog routing and provide adequate settling time so the system performance is not dominated by switch resistance or switching transients.
Được đề xuất
Data-Acquisition Systems
The DG407DJ+ can route multiple low-frequency sensor or instrumentation outputs into a shared data-acquisition front end. Its dual 8:1 structure supports compact channel expansion without requiring a separate address decoder for each bank, while the internal voltage reference establishes consistent logic thresholds. The 15 pC maximum charge injection helps limit transient error during channel changes, and 8 ohm maximum matching improves consistency across channels. Exact converter settling behavior remains application-dependent, so calculate total source impedance and acquisition time for the selected downstream ADC.
Được đề xuất
Industrial Process Monitoring
The DG407DJ+ is suitable for industrial monitoring systems that must select among multiple analog sensor nodes. Its low-frequency CMOS switching structure, bidirectional conduction, TTL- and CMOS-compatible decode, and enable input simplify integration with supervisory logic. Channel matching of 8 ohm maximum and flatness of 9 ohm maximum help preserve measurement consistency across the selected inputs. The design should include input protection appropriate for the industrial environment and should place the mux close enough to the protected sensor interface to minimize pickup on long analog traces.
Được đề xuất
Precision Instrumentation
The DG407DJ+ can improve source consistency in precision instrumentation that selects among several signal sources, including bridge, reference, or diagnostic nodes. The manufacturer guarantees no more than 8 ohm channel-to-channel matching and 9 ohm flatness, which helps when calibration assumes comparable switch paths. Charge injection is limited to 15 pC, reducing the magnitude of control pulses introduced into the switched node. For high-impedance sensors, check input leakage and capacitance in the official datasheet because those values were not present in the supplied verified snippets.
Được đề xuất
Multiplexed Sensor Interfaces
The DG407DJ+ fits interfaces combining several sensors with a shared amplifier or converter, particularly where the signals are low frequency and require matched routing. Its two 8-channel banks provide 16 analog switches, and the enable input can isolate one mux while another is selected in a larger system. The 100 ohm maximum on-resistance can become significant with high source impedance, so the acquisition chain should be designed around that added impedance. Keep control traces away from sensor inputs and use a ground reference that minimizes coupling during address transitions.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DG407DJ+ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DG407DJ | DG407DY+ | DG507AJ+ | DG407DJ | DG407DJ |
|---|---|---|---|---|---|---|
| Package | 28-PDIP | 28-PDIP | 28-PDIP | 28-PDIP | 28-PDIP | 28-PDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Vishay Intertechnology | Renesas Electronics |
Bảo phân biệt quan trọng
- Guaranteed matching between multiplexed channels (vsDG507AJ+)
- Low maximum charge injection for analog switching (vsDG507AJ+)
- Matched resistance and flatness across the selected signal range (vsDG407DJ)
- Integrated enable control for multi-device expansion (vsDG407DJ)
Ghi chú thiết kế
Treat the 100 ohm maximum on-resistance as part of the source impedance of every selected channel. For a high-impedance sensor, this resistance can materially reduce signal amplitude and increase settling time. Include the switch resistance, connector resistance, trace resistance, and downstream input impedance in the acquisition calculation. If the resulting attenuation or settling behavior is excessive, use a lower-on-resistance switch rather than compensating with unnecessary amplifier gain.
Route each analog signal so its switch and connector share a nearby ground reference, and keep address, enable, and other digital traces away from sensitive analog inputs. Through-hole PDIP routing provides flexibility, but long analog loops can increase coupling and susceptibility to noise. When the mux is located remotely from the source, use a low-impedance reference plane and consider guarding or shielding rather than relying on the mux's 8 ohm channel matching to correct board-level errors.
Do not treat the dual 8:1 architecture as a generic 16:1 mux without verifying the exact DG407DJ+ pin table and whether the selected channels are single-ended or differential. Also verify the enable polarity, address truth table, allowable analog voltage, and supply range from Data Sheet Rev. 6. The verified snippets identify the channel architecture and enable function but do not provide the complete pin-by-pin mapping, so relying on a generic schematic can produce wiring errors.
Decouple the DG407DJ+ supply with standard high-frequency bypass and a local bulk reservoir located close to the device pins. Because the supplied data does not specify supply current, transient current, or permitted voltage, do not infer a switching regulator or capacitor size from the 100 ohm analog on-resistance. Establish the actual supply network from the manufacturer limits and current-consumption table, then verify that address transitions do not disturb adjacent analog rails.
Thông tin tuân thủ
The supplied verified sources identify the family as production but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for DG407DJ+. Compliance must be confirmed from the current manufacturer product documentation for the exact ordering code.