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Analog Devices Inc./Maxim Integrated DG442CY
- Part No.:
- DG442CY
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG442CY.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,128
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Product details
Overview
DG442CY from Maxim Integrated is a quad, normally open (NO), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in rail-to-rail, bipolar or single-supply systems. It delivers 85Ω max on-resistance, <5nA off-leakage at +85°C, 10pC max charge injection, and operates from ±4.5V to ±20V or +10V to +30V supplies-enabling use in test equipment front-ends and battery-powered instrumentation.
For engineers reviewing the DG442CY datasheet, DG442CY pinout, DG442CY application, or DG442CY equivalent, key selection criteria include guaranteed on-resistance matching (4Ω max), on-resistance flatness (9Ω max), TTL/CMOS logic compatibility, low power consumption (1.65mW), and ESD tolerance (2000V min).
Technical Context
The DG442CY implements four independent SPST switches with NO logic polarity: each channel turns ON when its INx input is high (≥2.4V) and OFF when low (≤0.8V). All channels share common V+, V−, and GND connections, with no internal connection at Pin 12 (N.C.).
It uses a 44V silicon-gate process enabling operation across wide supply ranges while maintaining rail-to-rail analog signal handling (±15.5V with ±16.5V supplies) and low dynamic parameters: tON < 250ns, tOFF < 170ns, and crosstalk < −100dB at 1MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (rDS(ON)) | 85Ω max - ensures minimal signal attenuation and voltage drop in precision analog paths |
| On-Resistance Match | 4Ω max - enables matched gain/attenuation across channels in multi-path signal conditioning |
| On-Resistance Flatness | 9Ω max - maintains consistent channel behavior over full ±15.5V analog range |
| Charge Injection | 10pC max - reduces sampling error and settling time in sample-and-hold circuits |
| Off-Leakage Current | <5nA at +85°C - preserves accuracy in high-impedance sensor interfaces and battery monitoring |
| Supply Range | ±4.5V to ±20V or +10V to +30V - supports flexible system-level power architecture design |
| Logic Compatibility | TTL/CMOS - allows direct interfacing with microcontrollers and FPGAs without level-shifting |
Pinout & Package
Package: 16-pin narrow SO (Small Outline), RoHS-compliant, lead-free option available with "+" suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 15,14,6,7) | Digital control inputs | Active-high logic: high = switch ON (NO configuration); compatible with 0.8V/2.4V thresholds |
| D1–D4 (Pins 13,16,5,8) | Analog drain terminals | Switch output side; bidirectional conduction; connects to load or downstream circuitry |
| S1–S4 (Pins 12,11,4,3) | Analog source terminals | Switch input side; bidirectional conduction; connects to signal source or multiplexer input |
| V+ (Pin 13) | Positive supply rail | Must be ≥ V− + 4.5V; substrate connection point; exposed pad (in QFN) tied to V+ |
| V− (Pin 2) | Negative supply rail | Required for bipolar operation; set to 0V for single-supply mode |
| GND (Pin 5) | Ground reference | Logic ground and return path for supply currents; separate from analog signal ground in mixed-signal layouts |
| N.C. (Pin 10) | No internal connection | Must remain unconnected; not used for thermal or electrical purposes |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPST NO configuration | Enables independent control of four signal paths without cross-talk or interaction between channels |
| Rail-to-rail analog signal handling | Supports full ±15.5V swing with ±16.5V supplies-ideal for industrial sensor interfaces and audio routing |
| Guaranteed rFLAT(ON) ≤ 9Ω | Ensures uniform gain/loss across entire analog input range-critical for precision measurement front-ends |
| ESD tolerance ≥ 2000V (HBM) | Reduces need for external protection in handheld test gear and field-deployable instrumentation |
| Low power: 1.65mW max | Extends battery life in portable data loggers and remote sensor nodes operating from coin cells or Li-ion |
Applications
| Test Equipment Signal Routing | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Multiplexing multiple sensor inputs into a shared ADC in automated test equipment. IC Role / Device Role / Timing Role: Quad SPST analog switch providing isolated, low-distortion signal paths under microcontroller control. Use Value: 4Ω max on-resistance match ensures identical gain scaling across channels; <5nA leakage prevents DC offset drift during long-duration measurements. |
Use Scenario: Selecting between thermocouple, RTD, and voltage inputs in a handheld multimeter. IC Role / Device Role / Timing Role: Low-power, rail-to-rail analog switch enabling flexible input configuration without external biasing. Use Value: 1.65mW max power draw extends runtime; ±4.5V to ±20V operation supports both alkaline and Li-ion battery stacks. |
| Audio-Signal Routing | Heads-Up Display (HUD) Interface |
Use Scenario: Switching between line-in, mic-in, and headphone-out paths in professional audio mixers. IC Role / Device Role / Timing Role: Bidirectional analog switch handling AC-coupled audio signals with minimal THD. Use Value: 10pC max charge injection prevents audible pop/click during switching; 85Ω rDS(ON) avoids loading high-Z sources. |
Use Scenario: Enabling/disabling video signal paths between HUD controller and projection optics in automotive displays. IC Role / Device Role / Timing Role: High-reliability analog switch isolating sensitive display drivers during power-up sequencing. Use Value: 2000V HBM ESD rating withstands assembly handling and in-vehicle electrostatic events; fast tOFF < 170ns ensures clean blanking transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG442BRZ | 80Ω rDS(ON) typ, 15pC charge injection, −40°C to +85°C grade only | Higher leakage (>20nA at +85°C); requires tighter thermal management in hot environments | Preferred where lower typical on-resistance outweighs leakage sensitivity and temperature range needs |
| TS5A23157DCUR | Single-supply only (+1.65V to +5.5V), 0.9Ω rDS(ON), 3.5pC charge injection | Not suitable for ±15V or high-voltage signal routing; limited to low-voltage digital/audio applications | Select when operating from 3.3V/5V rails and ultra-low on-resistance is critical, but high-voltage capability is unnecessary |
Compared with ADG442BRZ and TS5A23157DCUR, the DG442CY uniquely supports dual-supply operation up to ±20V with guaranteed low leakage at +85°C-making it the only viable choice for industrial test equipment requiring wide dynamic range and thermal stability.
Availability
DG442CY is available at Aetrix Electronics and suitable for test equipment signal routing, battery-powered instrumentation, audio-signal routing, heads-up display interface, and sample-and-hold circuits requiring stable component supply across extended temperature and voltage ranges.
Supply support for DG442CY 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 computing applications.
The DG442CY belongs to Maxim's precision analog switch product line, engineered for low distortion, low leakage, and robust operation in demanding test and measurement systems.
FAQ
What is the maximum allowable supply voltage difference for DG442CY?
The DG442CY specifies an absolute maximum V+ to V− differential of 44V. This means the device can safely operate with asymmetric supplies-for example, +24V and −5V-as long as their difference does not exceed 44V. Exceeding this rating risks permanent damage, regardless of individual rail voltages. Always verify compliance using the Absolute Maximum Ratings table in the DG442CY datasheet.
Does DG442CY support rail-to-rail analog signal operation?
Yes, the DG442CY supports rail-to-rail analog signal handling: with ±16.5V supplies, it passes signals from −15.5V to +15.5V without clipping. This is enabled by its 44V silicon-gate process and internal level-shifting architecture. The DG442CY maintains low on-resistance and flatness across this full range, making it suitable for precision applications like sensor front-ends and programmable gain amplifiers.
What is the logic polarity configuration of DG442CY?
The DG442CY is a normally open (NO) quad SPST switch: each channel conducts (ON) only when its corresponding INx input is high (≥2.4V), and blocks (OFF) when low (≤0.8V). This differs from the DG441CY, which is normally closed (NC). The DG442CY's NO behavior simplifies fail-safe designs where signal interruption is required during power loss or logic reset.
Can DG442CY be used with single-supply operation?
Yes, the DG442CY supports single-supply operation from +10V to +30V. In this mode, connect V− to ground (0V), and ensure logic inputs meet TTL/CMOS thresholds referenced to that ground. Analog signals must stay within 0V to V+ − 0.5V to avoid forward-biasing internal clamping diodes. The DG442CY's performance-including on-resistance and leakage-is fully specified under both single- and dual-supply conditions.
Is the exposed pad on DG442CY packages required to be connected?
The exposed pad (EP) is present only on Thin QFN variants-not on the DG442CY (narrow SO package). Therefore, the DG442CY has no exposed pad and no thermal pad connection requirement. For QFN versions like DG442ETE, EP must be soldered to a V+-referenced copper plane per Maxim's layout guidelines-but this does not apply to the DG442CY.
DG442CY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- 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, 170ns
- -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
DG442CY FAQ
1.How can I place an order for DG442CY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG442CY 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 DG442CY reliable?
The price and inventory of DG442CY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG442CY is usually 5 days.
3.What payment methods are accepted for DG442CY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG442CY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG442CY?
DG442CY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG442CY 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 DG442CY?
For technical support, including DG442CY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG442CY requirements.
6.How does Aetrix verify that DG442CY is sourced from the original manufacturer or authorized distributors?
All DG442CY 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 DG442CY meets industry standards.
7.What is the process for return or replacement of DG442CY?
All DG442CY units undergo pre-shipment inspection (PSI). If there is an issue with DG442CY, 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 DG442CY part is unused and in its original packaging.
Return procedure for DG442CY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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