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Analog Devices Inc./Maxim Integrated DG441CY+
- Part No.:
- DG441CY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG441CY+.pdf
- Description:
- IC SWITCH SPST-NCX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:519
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Product details
Overview
DG441CY+ from Maxim Integrated is a quad, normally-closed (NC), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in rail-to-rail analog paths. It features 85Ω max on-resistance, 4Ω max on-resistance matching between channels, <5nA off-leakage at +85°C, 10pC max charge injection, and operates from ±4.5V to ±20V bipolar or +10V to +30V single supply - used in test equipment, audio-signal routing, and battery-operated systems.
For engineers reviewing the DG441CY+ datasheet, DG441CY+ pinout, DG441CY+ application, or DG441CY+ equivalent, key selection criteria include guaranteed rDS(ON) flatness (9Ω max), TTL/CMOS logic compatibility, low power consumption (1.65mW), ESD tolerance (2000V min), and thermal stability across 0°C to +70°C operation.
Technical Context
The DG441CY+ implements four independent NC SPST switches using Maxim's 44V silicon-gate process, enabling symmetric conduction in either direction with rail-to-rail analog signal handling. Its architecture guarantees matched on-resistance (≤4Ω) and flat on-resistance (≤9Ω) over the full analog range under bipolar supply conditions.
Switching is controlled by active-low logic inputs (IN1–IN4), where logic "0" closes all switches. Timing performance includes tON < 250ns and tOFF < 170ns at ±15V, with low ground current (±1µA typ) and negligible supply current (±15µA max) supporting low-noise, low-distortion signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| rDS(ON) | 85Ω max - ensures minimal insertion loss and voltage drop in analog signal paths up to ±15.5V. |
| ΔrDS(ON) | 4Ω max - enables precise channel-to-channel signal matching critical for multiplexer and sample-and-hold circuits. |
| rFLAT(ON) | 9Ω max - maintains consistent gain and linearity across full analog input range (±15.5V) under bipolar operation. |
| Charge Injection | 10pC max - minimizes sampling errors and pedestal distortion in precision ADC driver and sample-hold applications. |
| Off-Leakage (IS(OFF)/ID(OFF)) | <5nA at +85°C - preserves signal integrity in high-impedance sensor interfaces and battery-backed circuits. |
| Supply Range | ±4.5V to ±20V bipolar or +10V to +30V single - supports flexible system-level power architecture without level-shifting. |
| Logic Compatibility | TTL/CMOS - allows direct interfacing with microcontrollers, FPGAs, and digital sequencers without external buffers. |
Pinout & Package
Package: 16-pin narrow SOIC (SO), RoHS-compliant lead-free, exposed pad not present (DG441CY+ uses standard SO, not QFN-EP).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 9, 8 | IN1–IN4 | Active-low digital control inputs; logic "0" closes corresponding NC switch. |
| 2, 15, 10, 7 | D1–D4 | Drain terminals - bidirectional analog signal outputs connected to load or downstream circuitry. |
| 3, 14, 11, 6 | S1–S4 | Source terminals - bidirectional analog signal inputs tied to source or upstream signal path. |
| 4 | V− | Negative supply rail; must be connected for bipolar operation or grounded for single-supply use. |
| 5 | GND | Signal reference ground; separate from power ground in mixed-signal layouts to reduce noise coupling. |
| 12 | V+ | Positive supply rail; also serves as substrate connection - requires stable, low-impedance decoupling. |
| 13 | N.C. | No internal connection - left unconnected; no routing or termination required. |
Key Features
| Feature | Design Value |
|---|---|
| Normally Closed (NC) Configuration | Ensures fail-safe signal continuity during power loss or logic reset - critical for safety-critical monitoring paths. |
| Guaranteed rDS(ON) Matching | ≤4Ω channel-to-channel variation enables accurate gain-matched multi-channel instrumentation front-ends. |
| Rail-to-Rail Analog Handling | Supports signals from V− to V+ (±15.5V) without clipping - eliminates need for external biasing in AC-coupled systems. |
| Low Charge Injection (10pC) | Reduces hold-mode error in sample-and-hold amplifiers and improves settling accuracy in data acquisition systems. |
| ESD Robustness (2000V HBM) | Withstands handling and board-level ESD events per Method 3015.7 - reduces field failure risk in test and industrial environments. |
Applications
| Test Equipment Signal Routing | Audio-Signal Switching |
|---|---|
|
Use Scenario: Automated test systems route multiple sensor or DUT signals through a single measurement channel using multiplexed analog paths. IC Role / Device Role / Timing Role: DG441CY+ acts as a precision NC analog switch bank, enabling sequential channel selection while maintaining signal fidelity and low crosstalk. Use Value: 60dB off-isolation and <5nA leakage ensure minimal signal bleed and DC offset drift across 16-channel scan lists at 1MHz. |
Use Scenario: Professional audio mixers require silent, glitch-free switching between microphone preamp outputs and A/D converter inputs. IC Role / Device Role / Timing Role: DG441CY+ provides NC switching with sub-250ns tON, allowing zero-crossing detection-based switching to eliminate pop/click artifacts. Use Value: 10pC charge injection and rail-to-rail swing preserve dynamic range and THD+N performance across ±12V audio rails. |
| Battery-Powered Data Loggers | Heads-Up Display (HUD) Sensor Interfaces |
|
Use Scenario: Portable environmental monitors condition and multiplex thermistor, humidity, and pressure sensor outputs before ADC sampling. IC Role / Device Role / Timing Role: DG441CY+ serves as low-power analog front-end switch, activated only during sampling intervals to minimize quiescent current draw. Use Value: 1.65mW total power and <5nA leakage at +85°C extend battery life and prevent thermal drift-induced calibration errors. |
Use Scenario: Automotive HUD units interface ambient light, temperature, and image sensor signals to an MCU under wide temperature swings. IC Role / Device Role / Timing Role: DG441CY+ routes analog sensor outputs while maintaining signal integrity across −40°C to +85°C operating range. Use Value: Guaranteed rFLAT(ON) ≤9Ω and matched rDS(ON) ensure consistent gain scaling for auto-brightness and thermal compensation algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG441BRZ | Quad NC SPST, 85Ω rDS(ON), but higher charge injection (25pC) and no guaranteed rFLAT(ON) spec. | Lacks guaranteed on-resistance flatness and tighter leakage specs - less suitable for precision sample-and-hold or high-Z sensor muxing. | Select DG441CY+ when rFLAT(ON) ≤9Ω and leakage <5nA @ +85°C are required; ADG441BRZ may suffice for general-purpose routing. |
| TS5A3157DCKR | Single-pole/double-throw (SPDT), 0.75Ω rDS(ON), but only single-channel, lower voltage rating (5.5V), and no NC default state. | Not functionally equivalent: SPDT vs SPST, no NC behavior, incompatible supply range - unsuitable for fail-safe or high-voltage routing. | DG441CY+ remains necessary for quad NC SPST topology, ±20V operation, and fail-safe closure; TS5A3157DCKR serves low-voltage, single-channel reconfiguration only. |
Compared with ADG441BRZ and TS5A3157DCKR, DG441CY+ uniquely delivers quad NC SPST functionality with guaranteed on-resistance flatness, ultra-low leakage at temperature, and bipolar ±20V capability - making it irreplaceable in precision, high-reliability, and fail-safe analog routing applications.
Availability
DG441CY+ is available at Aetrix Electronics and suitable for test equipment, audio-signal routing, and battery-powered data loggers requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free packaging.
Supply support for DG441CY+ 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, communications, and consumer applications.
The DG441CY+ belongs to Maxim's precision analog switch product line, engineered specifically for low-distortion, low-leakage, and thermally stable signal routing in demanding instrumentation and portable systems.
FAQ
What is the default switch state of DG441CY+?
The DG441CY+ is a normally closed (NC) analog switch: each of its four SPST switches conducts when the corresponding INx input is logic low (0V), and opens when INx is logic high (≥2.4V). This fail-safe behavior ensures signal continuity during power-down or controller reset - a key design feature confirmed in the functional diagram and truth table of the DG441CY+ datasheet.
Does DG441CY+ support single-supply operation?
Yes, DG441CY+ supports single-supply operation from +10V to +30V. In this mode, V− must be connected to ground (0V), and the analog signal range extends from 0V to V+. The device retains rail-to-rail signal handling, 85Ω max rDS(ON), and all key specs including charge injection (10pC) and leakage (<5nA at +85°C) - verified in the "Electrical Characteristics-Single Supply" section of the DG441CY+ datasheet.
What is the maximum analog signal voltage range for DG441CY+?
The DG441CY+ supports analog signals from V− to V+, with absolute limits of ±15.5V when operated at ±15V supplies. Under full-rated bipolar conditions (±20V), the usable analog range is ±19.5V. These values are specified in the "Analog-Signal Range" parameter (±15V typical, ±15.5V guaranteed) and validated across temperature in the Typical Operating Characteristics graphs for DG441CY+.
Is DG441CY+ pin-compatible with legacy DG441 variants?
Yes, DG441CY+ is pin-compatible with all industry-standard DG441 variants in the 16-pin narrow SO package (e.g., DG441CY, DG441DY), sharing identical pinout, footprint, and electrical interface. The "+" suffix denotes lead-free compliance per Maxim's ordering convention - confirmed in the "Ordering Information" table and package drawings for DG441CY+.
What thermal performance can be expected from DG441CY+ at +85°C?
At +85°C, DG441CY+ guarantees off-leakage current <5nA (per IS(OFF)/ID(OFF) specs), on-resistance flatness ≤9Ω, and rDS(ON) ≤85Ω - all tested and 100% production-verified per the "Electrical Characteristics" tables. Thermal derating follows the narrow SO package's 8.70mW/°C specification, with 696mW max power dissipation at +70°C ambient - data confirmed in the Absolute Maximum Ratings and Thermal Characteristics sections for DG441CY+.
DG441CY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 4Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 250ns, 120ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 4pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -100dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG441CY+ FAQ
1.How can I place an order for DG441CY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG441CY+ 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 DG441CY+ reliable?
The price and inventory of DG441CY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG441CY+ is usually 5 days.
3.What payment methods are accepted for DG441CY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG441CY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG441CY+?
DG441CY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG441CY+ 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 DG441CY+?
For technical support, including DG441CY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG441CY+ requirements.
6.How does Aetrix verify that DG441CY+ is sourced from the original manufacturer or authorized distributors?
All DG441CY+ 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 DG441CY+ meets industry standards.
7.What is the process for return or replacement of DG441CY+?
All DG441CY+ units undergo pre-shipment inspection (PSI). If there is an issue with DG441CY+, 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 DG441CY+ part is unused and in its original packaging.
Return procedure for DG441CY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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