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Analog Devices Inc./Maxim Integrated DG408DY
- Part No.:
- DG408DY
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG408DY.pdf
- Description:
- IC MUX 8:1 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,355
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Product details
Overview
DG408DY from Maxim Integrated is a precision 1-of-8 CMOS analog multiplexer/demultiplexer designed for bidirectional signal routing in precision data-acquisition and test systems. It features guaranteed 100Ω max on-resistance, 8Ω max channel-to-channel matching, 15pC max charge injection, rail-to-rail signal handling up to ±20V dual supply or +30V single supply, and operates across -40°C to +85°C.
For engineers reviewing the DG408DY datasheet, DG408DY pinout, DG408DY application, or DG408DY equivalent, key selection criteria include on-resistance flatness (9Ω max), input off-leakage (<5nA at +85°C), enable-controlled switching (tON(EN) = 100ns typ), TTL/CMOS-compatible digital inputs, and TSSOP/SO package compatibility for space-constrained layouts.
Technical Context
The DG408DY implements an 8-channel analog switch matrix with binary-decoded address inputs (A0–A2) and active-low enable (EN), supporting both multiplexing and demultiplexing modes. Its CMOS transmission-gate architecture ensures symmetrical conduction and low distortion across the full analog signal range (±15V typical).
It operates from ±5V to ±20V dual supplies or +5V to +30V single supply (V− tied to GND), with ESD protection exceeding 2000V per MIL-STD-883 Method 3015.7. Switch control logic tolerates TTL/CMOS voltage levels (VAL ≤ 0.8V, VAH ≥ 2.4V), and all analog terminals support rail-to-rail voltage swing relative to V+ and V−.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 100Ω max - ensures minimal signal attenuation and gain error in precision gain-setting or sensor front-end paths |
| On-Resistance Matching | 8Ω max - guarantees consistent channel gain/attenuation in multi-channel calibration or ratiometric measurement systems |
| Charge Injection | 15pC max - limits voltage glitch and settling time in sample-and-hold circuits using small hold capacitors |
| Analog Signal Range | ±15V (dual), +30V (single) - supports industrial sensor outputs, audio line-level signals, and legacy instrumentation interfaces |
| Input Off-Leakage | 5nA max at +85°C - preserves accuracy in high-impedance pH, thermocouple, or photodiode amplifier inputs |
| Enable Turn-On Time | 100ns typ - enables fast channel switching in automated test equipment scan sequences |
| ESD Protection | >2000V HBM - enhances robustness in benchtop test fixtures and field-deployable measurement hardware |
Pinout & Package
DG408DY is supplied in a 16-pin narrow SO (Small Outline) package, 3.9mm width, JEDEC MS-012 compliant, with gull-wing leads and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15, 16 | A0, A1, A2 | Binary address inputs selecting one of eight analog channels (S1–S8); logic thresholds 0.8V/2.4V support direct MCU GPIO interface |
| 2 | EN | Active-low enable controlling global switch array; when high, all channels are open-circuit (high-Z) |
| 3 | V− | Negative supply rail; must be connected for dual-supply operation or tied to GND for single-supply use |
| 4–7, 9–12 | S1–S4, S5–S8 | Bidirectional analog input terminals; identical electrical characteristics allow flexible mux/demux configuration |
| 8 | D | Common bidirectional analog output/input terminal; connects to selected Sx channel when enabled |
| 13 | V+ | Positive supply rail; supports up to +30V in single-supply mode or +20V in dual-supply mode |
| 14 | GND | Ground reference for logic inputs and internal biasing; separate from analog signal ground in mixed-signal PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| PIN-COMPATIBLE UPGRADE | Direct replacement for legacy DG408 - no PCB or firmware changes required for performance enhancement |
| Rail-to-Rail Signal Handling | Supports analog signals from V− to V+ without clipping - essential for ±10V industrial I/O and unipolar 0–24V sensor interfaces |
| Guaranteed On-Resistance Flatness | 9Ω max variation across full signal range - maintains linearity in precision attenuator or programmable-gain amplifier applications |
| Low Power Consumption | 1.25mW max at +25°C - enables battery-powered portable instrumentation and low-heat-density multichannel DAQ modules |
| TTL/CMOS-Compatible Control | Accepts standard logic levels without level-shifting - simplifies interface to microcontrollers, FPGAs, and CPLDs |
Applications
| Sample-and-Hold Circuits | Test Equipment |
|---|---|
Use Scenario: High-speed sampling of multiple sensor outputs into a shared hold capacitor before ADC conversion. IC Role / Device Role / Timing Role: DG408DY acts as the channel-selecting analog switch preceding the hold capacitor, enabling sequential acquisition with minimal charge injection error. Use Value: 15pC max charge injection and 100ns enable timing ensure sub-12-bit settling accuracy for 100kSPS multi-channel sampling. | Use Scenario: Automated signal routing in benchtop multimeters and functional testers where multiple DUT signals connect to shared measurement resources. IC Role / Device Role / Timing Role: DG408DY serves as the front-end multiplexer, isolating and selecting DUT analog nodes under GPIB/LAN controller command. Use Value: 8Ω max channel matching and <5nA off-leakage preserve measurement integrity across temperature during extended calibration cycles. |
| Guidance and Control Systems | Audio Signal Routing |
Use Scenario: Consolidating feedback signals (gyro, accelerometer, encoder) into a flight controller's analog input stage with fault-isolation capability. IC Role / Device Role / Timing Role: DG408DY functions as a redundant analog signal selector, routing primary or backup sensor data based on health monitoring logic. Use Value: ±20V dual-supply operation and >2000V ESD rating withstand harsh avionics power bus transients and handling events. | Use Scenario: Dynamic reconfiguration of analog audio paths in professional mixing consoles or modular synthesizers. IC Role / Device Role / Timing Role: DG408DY provides silent, glitch-free channel switching between line-level sources and effects processors or output buses. Use Value: Rail-to-rail ±15V signal handling and 9Ω on-resistance flatness maintain wide dynamic range and tonal neutrality across all selected paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG408BRUZ | 16-pin TSSOP; 75Ω max on-resistance; 10pC max charge injection; −40°C to +85°C | Lower on-resistance and charge injection, but requires different PCB footprint and has tighter supply voltage limits (±16.5V max) | Select ADG408BRUZ when lower distortion and faster settling are critical, and board redesign is acceptable. |
| MAX4617ESA+ | 8-channel, 30Ω max on-resistance, +2.7V to +12V single-supply only, −40°C to +85°C | Optimized for low-voltage portable systems; incompatible with ±15V or +24V industrial rails | Choose MAX4617ESA+ for battery-powered handheld instruments where supply headroom is constrained. |
Compared with DG408DY, ADG408BRUZ offers superior analog performance but demands layout revision, while MAX4617ESA+ sacrifices voltage range and on-resistance for ultra-low supply operation-making DG408DY the optimal choice for industrial-grade, wide-supply, drop-in upgrade scenarios.
Availability
DG408DY is available at Aetrix Electronics and suitable for test equipment, guidance and control systems, and data-acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG408DY 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, and communications applications.
The DG408DY belongs to Maxim's precision analog switch product line, engineered specifically for high-fidelity signal routing in environments demanding low leakage, tight matching, and rugged supply flexibility.
FAQ
What is the maximum supply voltage rating for DG408DY in dual-supply operation?
The DG408DY supports dual-supply operation from ±5V to ±20V. The absolute maximum rating specifies V+ up to +44V referenced to V−, but functional operation is guaranteed only within the ±5V to ±20V range. Exceeding ±20V risks violating the specified on-resistance flatness and leakage performance, and may compromise long-term reliability. Always observe the recommended operating conditions in the official Maxim datasheet for DG408DY.
Does DG408DY support single-supply operation, and how is it configured?
Yes, DG408DY supports single-supply operation from +5V to +30V. To configure it, tie the V− pin to GND (not left floating), apply the positive supply to V+, and ensure all analog signals remain within 0V to V+. Digital inputs retain TTL/CMOS compatibility. This configuration is commonly used in PLC analog input modules and portable data loggers where negative supply rails are unavailable.
Is DG408DY pin-compatible with the original industry-standard DG408?
Yes, DG408DY is explicitly designed as a pin-compatible plug-in upgrade for the legacy DG408. Its pinout, package outline (16-pin narrow SO), and logic-level timing match exactly. No PCB layout or firmware modifications are needed to replace older DG408 variants with DG408DY, delivering improved on-resistance matching, lower charge injection, and enhanced temperature stability out-of-the-box.
What is the guaranteed on-resistance flatness specification for DG408DY, and why does it matter?
DG408DY guarantees on-resistance flatness of 9Ω maximum across its full specified analog signal range. This means the variation in rDS(ON) from minimum to maximum measured at signal extremes (e.g., V− to V+) stays within 9Ω. In practice, this ensures consistent gain and minimal harmonic distortion when used in programmable-gain amplifiers or precision attenuator networks-critical for 12-bit+ data-acquisition accuracy.
How does DG408DY handle ESD, and what protection level is assured?
DG408DY is tested and guaranteed to withstand >2000V HBM (Human Body Model) ESD per MIL-STD-883 Method 3015.7. This level of protection makes it suitable for use in lab environments, field-serviceable test gear, and industrial control panels where accidental static discharge is common. No external ESD clamps are required for basic handling robustness, though system-level protection remains recommended for mission-critical deployments.
DG408DY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- 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, 26pF
- 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
DG408DY FAQ
1.How can I place an order for DG408DY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG408DY 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 DG408DY reliable?
The price and inventory of DG408DY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG408DY is usually 5 days.
3.What payment methods are accepted for DG408DY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG408DY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG408DY?
DG408DY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG408DY 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 DG408DY?
For technical support, including DG408DY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG408DY requirements.
6.How does Aetrix verify that DG408DY is sourced from the original manufacturer or authorized distributors?
All DG408DY 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 DG408DY meets industry standards.
7.What is the process for return or replacement of DG408DY?
All DG408DY units undergo pre-shipment inspection (PSI). If there is an issue with DG408DY, 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 DG408DY part is unused and in its original packaging.
Return procedure for DG408DY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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