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Analog Devices Inc./Maxim Integrated DG409DY+T
- Part No.:
- DG409DY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG409DY+T.pdf
- Description:
- IC SWITCH SP4T X 2 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,387
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Product details
Overview
DG409DY+T from Maxim Integrated is a dual 4-channel CMOS analog multiplexer/demultiplexer designed for precision signal routing in mixed-signal systems. It features guaranteed on-resistance matching ≤8Ω, flatness ≤9Ω, low charge injection ≤15pC, and operates from ±5V to ±20V dual supplies or +5V to +30V single supply. Used in data-acquisition systems requiring rail-to-rail analog signal handling with TTL/CMOS-compatible digital control.
For engineers reviewing the DG409DY+T datasheet, DG409DY+T pinout, DG409DY+T application, or DG409DY+T equivalent, key selection criteria include channel matching tolerance, leakage performance at +85°C, enable timing (tON(EN) ≤150ns), and SO package thermal derating (696mW at +70°C).
Technical Context
The DG409DY+T implements dual independent 4:1 analog multiplexers with decoded address logic (A0/A1) and global enable (EN). Each 4-channel section routes bidirectional analog signals between four source terminals (S1A–S4A or S1B–S4B) and one common terminal (DA or DB), with rail-to-rail signal capability across its full supply range.
Its CMOS switch architecture guarantees matched on-resistance between channels (ΔrDS(ON) ≤8Ω) and minimal variation over signal voltage (rFLAT ≤9Ω), critical for gain-matching in multi-channel instrumentation. Leakage is specified ≤5nA at +85°C for both on- and off-states, supporting high-impedance sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (rDS(ON)) | 100Ω max - ensures minimal signal attenuation and gain error in precision amplification paths |
| On-Resistance Matching | 8Ω max - enables accurate channel-to-channel ratio matching in differential or multi-sensor applications |
| Charge Injection | 15pC max - limits voltage glitch on sample-and-hold capacitors, preserving ADC accuracy |
| Input Off-Leakage | 5nA max at +85°C - maintains integrity of high-impedance sensor or reference inputs |
| Enable Turn-On Time | 150ns max - supports fast multiplexing in real-time control loops and burst-mode acquisition |
| Analog Signal Range | ±10V (dual supply) or 0V to +10V (single supply) - accommodates industrial sensor outputs without level-shifting |
| ESD Protection | >2000V per MIL-STD-883 Method 3015.7 - enhances robustness in test equipment and field-deployed systems |
Pinout & Package
DG409DY+T is supplied in a 16-pin narrow SO (Small Outline) package, 3.9mm width, with standard JEDEC MS-012AC footprint and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting active channel (00–11) within each 4-channel group |
| 2 | EN | Active-low enable controlling conduction state of both multiplexer sections simultaneously |
| 3 | V− | Negative supply rail; must be connected for dual-supply operation or tied to GND for single-supply use |
| 4–7 | S1A–S4A | Bidirectional analog inputs for first 4-channel mux section; routed to DA when selected |
| 8, 9 | DA, DB | Common bidirectional analog outputs - DA serves S1A–S4A, DB serves S1B–S4B |
| 10–13 | S4B–S1B | Bidirectional analog inputs for second 4-channel mux section; routed to DB when selected |
| 14 | V+ | Positive supply rail; supports up to +30V single or +20V dual supply operation |
| 15 | GND | Ground reference for logic inputs and internal biasing; separate from analog return in mixed-signal layouts |
Key Features
| Feature | Design Value |
|---|---|
| PIN-COMPATIBLE UPGRADE | Direct replacement for legacy DG409 with identical pinout and footprint - no PCB redesign required |
| Rail-to-Rail Signal Handling | Full analog swing from V− to V+ enables interfacing with unbuffered sensors and DACs without clamping |
| TTL/CMOS-Compatible Inputs | Logic thresholds (VAL ≤0.8V, VAH ≥2.4V) ensure reliable interface with microcontrollers and FPGAs |
| Low Power Consumption | 1.25mW max at +25°C - suitable for battery-powered portable instrumentation |
| Break-Before-Make Switching | Guaranteed tOPEN ≥85ns prevents momentary shorting between channels during address changes |
Applications
| Sample-and-Hold Circuits | Test Equipment |
|---|---|
Use Scenario: Multiplexing multiple sensor outputs into a shared sample-and-hold amplifier before ADC conversion. IC Role / Device Role / Timing Role: Dual 4:1 analog switch providing synchronized channel selection with low charge injection to prevent hold capacitor corruption. Use Value: 15pC max charge injection minimizes voltage step error on 1nF hold capacitors, preserving 12-bit+ effective resolution. | Use Scenario: Automated signal routing in benchtop multimeters and automated test equipment (ATE) switching matrices. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling flexible front-end configuration under microcontroller control. Use Value: 8Ω max on-resistance matching ensures consistent gain scaling across all 8 channels, reducing calibration overhead. |
| Guidance and Control Systems | Communications Systems |
Use Scenario: Routing feedback signals from multiple inertial measurement units (IMUs) or position encoders in aerospace flight controllers. IC Role / Device Role / Timing Role: High-reliability analog switch operating over −40°C to +85°C with guaranteed leakage <5nA at temperature extremes. Use Value: Low +85°C off-leakage preserves signal integrity in sealed avionics enclosures where thermal management is constrained. | Use Scenario: Channel selection in RF front-end calibration paths and baseband signal conditioning for multi-band transceivers. IC Role / Device Role / Timing Role: Low-capacitance analog switch (CD(OFF) = 26pF, CS(OFF) = 3pF) minimizing crosstalk and loading on sensitive IF stages. Use Value: −92dB crosstalk and −75dB off-isolation prevent inter-channel interference in dense multi-carrier architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG409BRZ | 16-pin SO, 100Ω rDS(ON), but higher charge injection (25pC) and no guaranteed matching spec | Acceptable where channel matching is non-critical; lower ESD rating (1500V) | Select ADG409BRZ only if system-level testing confirms 25pC charge injection meets hold-step error budget |
| MAX4619ESE+ | Dual 4:1, but rated only to +70°C and higher on-resistance (125Ω max) | Limited to commercial-grade instrumentation; not suitable for extended temperature industrial deployment | Choose MAX4619ESE+ only for cost-sensitive, non-extended-temp designs where 125Ω rDS(ON) is acceptable |
Compared with DG409DY+T, ADG409BRZ trades guaranteed channel matching and higher ESD protection for broader vendor availability, while MAX4619ESE+ sacrifices temperature range and on-resistance performance for lower unit cost in benign environments.
Availability
DG409DY+T is available at Aetrix Electronics and suitable for data-acquisition systems, test equipment, and guidance and control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG409DY+T 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 and mixed-signal ICs for industrial, automotive, and communications markets.
The DG409DY+T belongs to Maxim's precision analog multiplexer product line, engineered for applications demanding low distortion, tight channel matching, and robust operation across wide supply and temperature ranges.
FAQ
What supply voltage ranges does the DG409DY+T support?
The DG409DY+T operates from ±5V to ±20V dual supplies or +5V to +30V single supply. When using single supply, V− must be connected to GND. Unbalanced supplies (e.g., +24V/−5V) are also supported, provided the difference between V+ and V− does not exceed +44V. These ranges are validated across the full −40°C to +85°C operating temperature.
Is the DG409DY+T pin-compatible with the original DG409?
Yes, the DG409DY+T is a pin-compatible plug-in upgrade for the industry-standard DG409. Its 16-pin narrow SO package matches the footprint, pinout, and signal assignments of legacy DG409 variants, enabling drop-in replacement without layout modification.
What is the maximum allowable leakage current for DG409DY+T at +85°C?
The DG409DY+T guarantees input off-leakage current ≤5nA at +85°C, verified per datasheet testing conditions. This applies to both source-off (IS(OFF)) and drain-off (ID(OFF)) states, ensuring signal integrity in high-impedance sensor front-ends and precision reference routing.
How does the enable timing of DG409DY+T impact multiplexing speed?
The DG409DY+T specifies enable turn-on time tON(EN) ≤150ns and turn-off time tOFF(EN) ≤300ns under typical dual-supply conditions. This allows multiplexing rates exceeding 3MHz in burst-mode acquisition, provided external load capacitance remains ≤100pF and drive strength meets TTL/CMOS thresholds.
Does DG409DY+T require external protection diodes for overvoltage conditions?
No, external blocking diodes are optional. The DG409DY+T includes internal clamp diodes that limit analog input voltages to within V+ +2V and V− −2V. However, if absolute maximum ratings risk being exceeded (e.g., during power-supply sequencing faults), series diodes may be added - reducing analog range by ~1V but preserving low-resistance and low-leakage performance.
DG409DY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.5Ohm
- Voltage - Supply, Single (V+):
- 5V ~ 30V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 14pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG409DY+T FAQ
1.How can I place an order for DG409DY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG409DY+T 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 DG409DY+T reliable?
The price and inventory of DG409DY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG409DY+T is usually 5 days.
3.What payment methods are accepted for DG409DY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG409DY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG409DY+T?
DG409DY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG409DY+T 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 DG409DY+T?
For technical support, including DG409DY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG409DY+T requirements.
6.How does Aetrix verify that DG409DY+T is sourced from the original manufacturer or authorized distributors?
All DG409DY+T 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 DG409DY+T meets industry standards.
7.What is the process for return or replacement of DG409DY+T?
All DG409DY+T units undergo pre-shipment inspection (PSI). If there is an issue with DG409DY+T, 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 DG409DY+T part is unused and in its original packaging.
Return procedure for DG409DY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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