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Analog Devices Inc./Maxim Integrated DG509ADY+
- Part No.:
- DG509ADY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG509ADY+.pdf
- Description:
- IC SWITCH SP4T X 2 450OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:424
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Product details
Overview
DG509ADY+ from Maxim Integrated is a monolithic CMOS differential 4-channel (2-of-8) analog multiplexer with ±4.5V to ±18V dual-supply operation, break-before-make switching, and 16-pin narrow SOIC package. It supports bidirectional signal routing in precision data-acquisition systems, features 500Ω typical on-resistance at ±15V, <0.5nA max off-leakage at +25°C, and 0.6μs typical switch transition time.
For engineers reviewing the DG509ADY+ datasheet, DG509ADY+ pinout, DG509ADY+ application, or DG509ADY+ equivalent, key selection criteria include its differential channel architecture, guaranteed latchup immunity with powered-off supplies, low standby current (0.02mA), and compatibility with TTL/CMOS logic levels across industrial temperature range (–40°C to +85°C).
Technical Context
The DG509ADY+ implements a fully decoded address logic block controlling four differential switch pairs (S1A/S1B through S4A/S4B), each capable of bidirectional analog signal flow. Its break-before-make timing ensures no transient shorting between channels, with a guaranteed 0.2μs minimum open interval during switching.
It operates with symmetrical analog signal range (±15V) referenced to V− and GND, and features rail-to-rail-compatible digital inputs (A0, A1, EN) that accept 0.8V/2.4V logic thresholds. The device maintains specified RDS(ON) and leakage performance over full –40°C to +85°C temperature range under ±15V supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V - Supports full-rail analog signals without clipping when V+ = +15V, V− = −15V, enabling direct interface with ±10V sensor outputs. |
| Drain-Source On-Resistance | 500Ω typ - Low and matched channel resistance minimizes gain error and crosstalk in precision instrumentation amplifier front-ends. |
| Off-Leakage Current | ±0.5nA max - Enables high-impedance signal routing in data-logging systems where input bias currents must remain below 1nA. |
| Switch Transition Time | 0.6μs typ - Allows sampling rates up to ~1.2MHz in sequential mux applications without significant settling delay. |
| Break-Before-Make Interval | 0.2μs min - Prevents momentary short-circuit between differential channel pairs during address changes, critical for fault-tolerant control systems. |
| Supply Voltage Range | ±4.5V to ±18V - Permits flexible system-level power design, including compatibility with legacy ±12V and ±15V industrial rails. |
| Logic Compatibility | TTL/CMOS - Direct interfacing with microcontroller GPIOs or FPGA I/O banks without level-shifting circuitry. |
Pinout & Package
Package: 16-pin narrow SOIC (S16-5), RoHS-compliant, surface-mountable with 1.27mm pitch and 10.3mm × 5.3mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting one of four differential channel pairs (00→S1A/S1B, 11→S4A/S4B). |
| 2 | EN | Active-high enable controlling global switch conduction; logic low disables all channels, placing outputs in high-Z state. |
| 3 | V− | Negative supply rail connection; sets lower bound of analog signal range and powers internal CMOS switch core. |
| 4–7 | S1A–S4A | First side of differential analog inputs/outputs; each pair (e.g., S1A/S1B) routes one balanced signal path. |
| 8, 9 | DA, DB | Differential analog output terminals; DA and DB carry complementary signals from selected channel pair. |
| 10–13 | S4B–S1B | Second side of differential analog inputs/outputs; mirrored ordering supports PCB layout symmetry for EMI reduction. |
| 14 | V+ | Positive supply rail connection; defines upper bound of analog signal swing and powers decode logic. |
| 15 | GND | Signal reference ground; decoupling capacitor placement here minimizes noise coupling into analog paths. |
Key Features
| Feature | Design Value |
|---|---|
| Latchup-proof construction | Guaranteed immunity to latchup even when input signals remain present while power supplies are off-enables hot-swap and fail-safe system designs. |
| Symmetrical bidirectional operation | Identical on-resistance and capacitance in either direction allows use as mux or demux without performance penalty or signal polarity inversion. |
| Low-power CMOS design | 0.02mA supply current in standby mode reduces thermal load and extends battery life in portable data loggers and handheld test equipment. |
| Plug-in upgrade for industry-standard DG509A | Pin- and function-compatible replacement with faster enable switching (0.4μs tON) and lower leakage-no PCB redesign required for legacy upgrades. |
| Break-before-make switching | Hardware-enforced isolation between channel selections eliminates transient shorts, satisfying safety requirements in aircraft HUD and medical monitoring systems. |
Applications
| Control Systems | Data-Acquisition Systems |
|---|---|
Use Scenario: Routing analog feedback signals from multiple motor drives to a single ADC in a multi-axis CNC controller. IC Role / Device Role / Timing Role: Differential analog multiplexer selecting one of four isolated current-sense amplifier outputs per cycle. Use Value: Break-before-make prevents cross-talk between axes; ±15V range accommodates industrial transducer outputs without external scaling. |
Use Scenario: Scanning thermocouple inputs in an environmental chamber monitor with cold-junction compensation. IC Role / Device Role / Timing Role: High-impedance, low-leakage analog switch sequencing eight differential thermocouple pairs to a precision sigma-delta ADC. Use Value: <0.5nA off-leakage avoids measurement drift; narrow SOIC footprint enables dense channel packing on compact DAQ PCBs. |
| Aircraft Heads-Up Displays | Signal Routing |
Use Scenario: Selecting video sync and brightness calibration signals from redundant display generators in avionics HUD units. IC Role / Device Role / Timing Role: Fault-tolerant differential mux ensuring uninterrupted analog video path during generator switchover. Use Value: Latchup immunity guarantees continued operation during power brownouts; –40°C to +85°C rating meets DO-160 environmental specs. |
Use Scenario: Reconfiguring analog signal paths in automated test equipment (ATE) for mixed-signal IC characterization. IC Role / Device Role / Timing Role: Programmable analog interconnect matrix routing DUT outputs to multiple measurement instruments. Use Value: 0.6μs transition time supports high-throughput test sequences; TTL/CMOS compatibility simplifies FPGA control integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX339CPE+ | Single-supply (±5V to ±20V), higher on-resistance (900Ω typ), wider temp range (–40°C to +85°C), same 16-pin PDIP/SO. | Preferred for cost-sensitive industrial controls where ±5V operation suffices and leakage <1nA is acceptable. | Select MAX339CPE+ when single-supply simplicity outweighs need for ultra-low leakage and fast switching. |
| ADG509AKRZ-REEL7 | Higher on-resistance (550Ω typ), higher leakage (±2nA), same 16-pin SOIC, but rated only to +70°C operating range. | Suitable for commercial-grade data loggers where extended temperature range is not required. | Choose ADG509AKRZ-REEL7 only if sourcing constraints favor Analog Devices' distribution network and –40°C rating is unnecessary. |
Compared with MAX339CPE+ and ADG509AKRZ-REEL7, the DG509ADY+ delivers superior leakage performance (0.5nA vs. ≥2nA), faster switching (0.6μs vs. ≥1.2μs), and guaranteed industrial temperature support-making it optimal for high-reliability, precision analog routing where signal integrity and environmental robustness are critical.
Availability
DG509ADY+ is available at Aetrix Electronics and suitable for control systems, data-acquisition systems, and aircraft heads-up displays requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DG509ADY+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, communications, and computing applications.
The DG509ADY+ belongs to Maxim's legacy monolithic CMOS analog multiplexer family, engineered for precision signal routing in harsh environments where latchup immunity, wide supply range, and differential channel integrity are essential.
FAQ
What is the maximum analog signal voltage range supported by the DG509ADY+?
The DG509ADY+ supports an analog signal range of ±15V when operated with V+ = +15V and V− = −15V. Its absolute maximum ratings allow V+ up to +44V referenced to V−, but specified performance-including on-resistance and leakage-is guaranteed only within ±4.5V to ±18V supply range. Operation outside ±15V requires derating per datasheet Note 4.
Does the DG509ADY+ require external pull-up resistors on its address or enable pins?
No, the DG509ADY+ does not require external pull-up resistors. Its logic inputs (A0, A1, EN) are CMOS-compatible with guaranteed high-level input current ≤±30μA and low-level input current ≤±30μA across temperature, allowing direct connection to microcontroller GPIOs or FPGA outputs without additional biasing components.
Can the DG509ADY+ be used in single-supply configurations?
The DG509ADY+ is designed for dual-supply operation (±4.5V to ±18V) and is not characterized for true single-supply use. While it may function with asymmetric supplies (e.g., +15V and GND), its analog signal range, on-resistance matching, and leakage specifications are validated only under symmetrical dual-rail conditions per the datasheet's test conditions.
How does the break-before-make timing of the DG509ADY+ prevent signal corruption?
The DG509ADY+ guarantees a minimum 0.2μs break interval between channel deactivation and activation. This hardware-enforced gap prevents momentary short-circuiting of differential signal pairs during address transitions-critical in applications like aircraft HUDs where simultaneous conduction could induce transient faults or measurement errors in sensitive analog paths.
Is the DG509ADY+ pin-compatible with older DG509A variants?
Yes, the DG509ADY+ is a plug-in upgrade for the industry-standard DG509A, sharing identical pinout, package outline (16-pin narrow SOIC), and functional behavior. It improves upon legacy versions with faster enable switching (0.4μs vs. 1.0μs), lower leakage (<0.5nA vs. <5nA), and enhanced latchup immunity-requiring no PCB or firmware changes for drop-in replacement.
DG509ADY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 450Ohm
- Channel-to-Channel Matching (ΔRon):
- 27Ohm
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 1.5µs, 1µs
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG509ADY+ FAQ
1.How can I place an order for DG509ADY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG509ADY+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DG509ADY+ reliable?
The price and inventory of DG509ADY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG509ADY+ is usually 5 days.
3.What payment methods are accepted for DG509ADY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG509ADY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG509ADY+?
DG509ADY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG509ADY+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DG509ADY+?
For technical support, including DG509ADY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG509ADY+ requirements.
6.How does Aetrix verify that DG509ADY+ is sourced from the original manufacturer or authorized distributors?
All DG509ADY+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DG509ADY+ meets industry standards.
7.What is the process for return or replacement of DG509ADY+?
All DG509ADY+ units undergo pre-shipment inspection (PSI). If there is an issue with DG509ADY+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DG509ADY+ part is unused and in its original packaging.
Return procedure for DG509ADY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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