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Analog Devices Inc./Maxim Integrated DG409CY+
- Part No.:
- DG409CY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG409CY+.pdf
- Description:
- IC SWITCH SP4T X 2 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:435
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Product details
Overview
DG409CY+ from Maxim Integrated is a dual 4-channel CMOS analog multiplexer/demultiplexer designed for precision signal routing in mixed-signal systems. It features guaranteed 100Ω max on-resistance, 8Ω max channel-to-channel on-resistance matching, and 15pC max charge injection-enabling accurate sampling in data-acquisition systems and low-distortion audio switching.
For engineers reviewing the DG409CY+ datasheet, DG409CY+ pinout, DG409CY+ application, or DG409CY+ equivalent, key selection criteria include rail-to-rail analog signal handling (±20V dual / +30V single supply), TTL/CMOS-compatible digital control, and guaranteed leakage <5nA at +85°C for high-impedance sensor front-ends.
Technical Context
The DG409CY+ implements a dual independent 4:1 analog switch architecture with separate address inputs (A0, A1) and shared enable (EN) per section. Each 4-channel block routes bidirectional analog signals between four source terminals (S1A–S4A or S1B–S4B) and one common differential output pair (DA, DB).
It operates across ±5V to ±20V dual supplies or +5V to +30V single supply (V− tied to GND), with guaranteed performance over 0°C to +70°C. Internal CMOS decoding logic ensures break-before-make switching and supports unbalanced supplies like +24V/−5V without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (rDS(ON)) | 100Ω max - ensures minimal signal attenuation and gain error in precision gain-setting or sensor interface paths |
| On-Resistance Matching | 8Ω max - enables accurate ratiometric measurements and matched channel calibration in differential acquisition |
| Charge Injection | 15pC max - limits voltage glitch on sample-hold capacitors, critical for 12-bit+ ADC front-ends |
| Analog Signal Range | ±20V dual / +30V single - supports industrial sensor outputs and legacy ±15V op-amp rails without level-shifting |
| Input Leakage (T = +85°C) | 5nA max - preserves accuracy in high-impedance pH, thermocouple, or piezoelectric sensor interfaces |
| Enable Turn-On Time | 150ns max - allows fast channel switching in real-time control loops and automated test equipment |
| ESD Protection | >2000V HBM - meets MIL-STD-883 Method 3015.7, enabling robust handling in manufacturing and field service |
Pinout & Package
Package: 16-pin narrow SO (SOIC-16, package code S16-5), 7.5mm × 10.3mm body, 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 section |
| 2 | EN | Active-low enable controlling both sections simultaneously; high-Z state when disabled |
| 3 | V− | Negative supply rail for dual-supply operation; tied to GND for single-supply mode |
| 4–7 | S1A–S4A | Bidirectional analog inputs for first 4-channel section (A-side) |
| 8, 9 | DA, DB | Differential analog outputs - DA connects to SxA, DB to SxB; supports balanced routing |
| 10–13 | S4B–S1B | Bidirectional analog inputs for second 4-channel section (B-side), mirrored pin order |
| 14 | V+ | Positive supply rail - accepts +5V to +30V (single) or ±5V to ±20V (dual) |
| 15 | GND | Ground reference for logic inputs and internal biasing; separate from analog return path |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports full swing from V− to V+ without clipping - essential for ±10V industrial I/O and audio line-level routing |
| Guaranteed on-resistance flatness | 9Ω max variation across analog range - maintains consistent gain and THD in variable-gain amplifier paths |
| TTL/CMOS-compatible control | VAL ≤ 0.8V / VAH ≥ 2.4V thresholds - interfaces directly with microcontrollers and FPGAs without level shifters |
| Low power consumption | 1.25mW max at +25°C - enables battery-powered portable instrumentation and low-power DAQ modules |
| Dual-section independence | Separate Sx-A and Sx-B banks with shared EN - allows simultaneous but isolated routing of two analog signal streams |
Applications
| Test Equipment | Data-Acquisition Systems |
|---|---|
Use Scenario: Automated test fixtures routing multiple sensor outputs to a shared digitizer channel. IC Role / Device Role / Timing Role: Dual 4:1 analog multiplexer enabling sequential scanning of 8 pressure/temperature sensors. Use Value: Guaranteed 8Ω channel matching eliminates calibration drift between channels; 15pC charge injection prevents hold capacitor corruption during switching. |
Use Scenario: Industrial PLC analog input module aggregating 8 RTD or thermocouple channels into dual ADCs. IC Role / Device Role / Timing Role: Precision signal router with rail-to-rail ±20V support interfacing directly to sensor signal conditioners. Use Value: 5nA max off-leakage at +85°C preserves measurement integrity in high-impedance bridge circuits; 150ns turn-on enables 6.6kHz scan rate. |
| Audio Signal Routing | Guidance and Control Systems |
Use Scenario: Professional audio mixer selecting between four microphone preamp outputs and two main bus destinations. IC Role / Device Role / Timing Role: Low-distortion bidirectional analog switch supporting balanced (DA/DB) and unbalanced signal paths. Use Value: 100Ω max on-resistance and 9Ω flatness minimize level mismatch and THD; ESD >2000V protects against studio handling discharge. |
Use Scenario: Avionics flight control unit routing redundant inertial measurement unit (IMU) analog outputs to central processor. IC Role / Device Role / Timing Role: Fault-tolerant analog multiplexer with dual independent sections for cross-channel monitoring and voting logic. Use Value: Pin-compatible upgrade path from legacy DG409 ensures drop-in reliability; −40°C to +85°C rating validated for extended temperature operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG409BRZ | 100Ω typical on-resistance (125Ω max), no guaranteed matching spec; 25pC charge injection (vs. 15pC max) | Lacks guaranteed 8Ω channel matching and 15pC charge injection - less suitable for ratiometric or high-resolution sampling | Select ADG409BRZ only if cost sensitivity outweighs matching/charge injection requirements; verify layout for higher leakage at temp. |
| MAX4619ESE+ | Dual SPDT (not 4:1); 6Ω on-resistance, but only 2 channels per section and no differential outputs (DA/DB) | Cannot replace DG409CY+ in 4-channel routing or differential signal paths; limited to simple signal gating | Use MAX4619ESE+ only for discrete channel enable/disable where 4:1 topology and DA/DB outputs are unnecessary. |
Compared with ADG409BRZ and MAX4619ESE+, the DG409CY+ uniquely delivers guaranteed 8Ω matching, 15pC charge injection, and dual differential outputs (DA/DB) - making it the only option among the three qualified for precision 4-channel scanning in metrology-grade DAQ and avionics sensor fusion.
Availability
DG409CY+ is available at Aetrix Electronics and suitable for test equipment, data-acquisition systems, and guidance and control systems requiring stable component supply and long-term obsolescence management.
Supply support for DG409CY+ 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 applications.
The DG409CY+ 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 DG409CY+ support?
The DG409CY+ operates with ±5V to ±20V dual supplies or +5V to +30V single supply (with V− tied to GND). It supports unbalanced configurations such as +24V/−5V. The analog signal range scales with supply rails - e.g., ±20V dual yields ±20V signal swing. This flexibility makes DG409CY+ suitable for legacy industrial systems and modern low-voltage designs alike.
Is the DG409CY+ pin-compatible with the original DG409?
Yes, the DG409CY+ is explicitly specified as a pin-compatible plug-in upgrade for the industry-standard DG409. Its pinout matches exactly across all packages (including narrow SO), and all electrical timing, logic thresholds, and functional behavior are backward compatible. No PCB changes are required when replacing legacy DG409 variants with DG409CY+.
What is the maximum operating temperature for the DG409CY+?
The DG409CY+ is rated for 0°C to +70°C ambient operating temperature. This commercial-grade specification is confirmed by its ordering code "CY" (C = 0°C to +70°C, Y = narrow SO package). For extended temperature operation, consider DG409DJ (−40°C to +85°C) or DG409AK (−55°C to +125°C), which share identical functionality but different temp grades.
Does the DG409CY+ support differential signaling via DA and DB pins?
Yes - the DG409CY+ provides dedicated DA and DB pins as differential analog outputs. Each 4-channel section (A and B) routes to its respective output pair, enabling true differential signal routing without external inversion. This architecture reduces common-mode noise in high-noise environments such as motor drives and avionics, and is explicitly documented in the functional diagram and pin description tables of the DG409CY+ datasheet.
How does the DG409CY+ handle charge injection in sample-and-hold circuits?
The DG409CY+ guarantees ≤15pC maximum charge injection, a critical parameter for sample-and-hold accuracy. When a channel turns off, this injected charge transfers to the hold capacitor (CL), causing a voltage error ΔVOUT = Q/CL. With DG409CY+, a 1nF capacitor sees ≤15mV glitch - enabling reliable 12-bit resolution in precision DAQ systems. This spec is 100% tested and guaranteed across temperature.
DG409CY+ 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):
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG409CY+ FAQ
1.How can I place an order for DG409CY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG409CY+ 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 DG409CY+ reliable?
The price and inventory of DG409CY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG409CY+ is usually 5 days.
3.What payment methods are accepted for DG409CY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG409CY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG409CY+?
DG409CY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG409CY+ 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 DG409CY+?
For technical support, including DG409CY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG409CY+ requirements.
6.How does Aetrix verify that DG409CY+ is sourced from the original manufacturer or authorized distributors?
All DG409CY+ 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 DG409CY+ meets industry standards.
7.What is the process for return or replacement of DG409CY+?
All DG409CY+ units undergo pre-shipment inspection (PSI). If there is an issue with DG409CY+, 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 DG409CY+ part is unused and in its original packaging.
Return procedure for DG409CY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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