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Analog Devices Inc./Maxim Integrated DG444CY+
- Part No.:
- DG444CY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG444CY+.pdf
- Description:
- IC SWITCH SPST-NCX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:150
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Product details
Overview
DG444CY+ from Maxim Integrated is a quad, normally closed (NC), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in bipolar or single-supply systems. It delivers 85Ω max on-resistance, 4Ω max on-resistance matching between channels, <5nA off-leakage at +85°C, and rail-to-rail analog signal handling up to ±15V. It is used in test equipment, audio signal routing, and battery-operated instrumentation where low charge injection (10pC max) and ESD tolerance (2000V min) are critical.
For engineers reviewing the DG444CY+ datasheet, DG444CY+ pinout, DG444CY+ application, or DG444CY+ equivalent, key selection criteria include guaranteed RON flatness (9Ω max), TTL/CMOS logic compatibility, dual-supply operation (±4.5V to ±20V), switching times under 250ns tON, and narrow SO-16 package compatibility with industrial temperature range (0°C to +70°C).
Technical Context
The DG444CY+ implements four independent NC SPST switches fabricated using a 44V silicon-gate process, enabling robust operation across wide supply ranges. Its architecture guarantees matched on-resistance (4Ω max) and flat on-resistance (9Ω max) over the full analog signal range - specifications validated only under bipolar-supply conditions per datasheet Note 4.
It supports both unipolar (+10V to +30V) and bipolar (±4.5V to ±20V) supplies, with VL pin configurable for TTL (5V) or CMOS (V+) logic level compatibility. Switching is controlled by active-low logic inputs, and all switches remain open during power-off - a fail-safe behavior critical for system integrity.
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 accurate channel-to-channel signal gain/phase tracking in multi-path systems |
| On-resistance flatness | 9Ω max - maintains consistent insertion loss across full ±15V analog input range |
| Charge injection | 10pC max - limits voltage glitch in sample-and-hold and switched-capacitor circuits |
| Off-leakage current | <5nA at +85°C - preserves DC accuracy in high-impedance sensor interfaces |
| ESD tolerance | 2000V min (HBM) - meets industrial handling requirements without external protection |
| Supply range | ±4.5V to ±20V (bipolar) or +10V to +30V (unipolar) - supports legacy and modern mixed-signal rails |
Pinout & Package
Package: 16-pin narrow SO (Small Outline), RoHS-compliant, surface-mount, 7.5mm × 5.0mm body size, 1.25mm max height, standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Logic control inputs | Active-low digital inputs controlling respective NC switches; TTL/CMOS compatible with VL = 5V or V+ |
| D1–D4 | Drain terminals | Analog output side of each SPST switch; bidirectional conduction with S pins |
| S1–S4 | Source terminals | Analog input side of each SPST switch; connected internally to V− when switch is closed (NC) |
| V+ | Positive supply | Main positive rail (up to +30V); also tied to substrate for latch-up immunity |
| V− | Negative supply | Main negative rail (down to −30V); required for bipolar operation or GND for unipolar mode |
| GND | Ground reference | Logic ground return; separate from analog signal ground in mixed-signal layouts |
| VL | Logic supply | Defines logic threshold: 5V for TTL, V+ for CMOS; must be stable before V+ and V− sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Quad NC SPST topology | Four independent, fail-open (power-off open) switches - eliminates unintended signal path closure during brownout |
| Rail-to-rail analog handling | Supports ±15V signal swing with full on-resistance spec compliance - enables direct interfacing with op-amps and ADC drivers |
| Guaranteed RON flatness | 9Ω max variation across entire analog range - ensures linear gain response in programmable gain amplifiers |
| Low power consumption | 35µW max quiescent - extends battery life in portable test gear and handheld instruments |
| Bipolar/unipolar supply flexibility | Single design supports ±15V lab equipment and +24V industrial PLC I/O modules - reduces BOM variants |
Applications
| Test Equipment | Audio Signal Routing |
|---|---|
Use Scenario: Automated test fixture switching between DUT channels and measurement instruments. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential signal acquisition without crosstalk or offset drift. Use Value: 100dB crosstalk rejection and <5nA leakage preserve measurement fidelity across 16-bit ADC front-ends. | Use Scenario: Channel-selectable routing in professional audio mixing consoles with analog summing buses. IC Role / Device Role / Timing Role: Low-distortion analog path selector with rail-to-rail capability for ±12V audio signals. Use Value: 85Ω RON and 9Ω RON flatness minimize level mismatch and THD across stereo pairs. |
| Battery-Operated Systems | Sample-and-Hold Circuits |
Use Scenario: Power-gated sensor interface in portable environmental monitors (e.g., gas detection, pH meters). IC Role / Device Role / Timing Role: Low-leakage analog gate isolating sensors during sleep mode to extend battery runtime. Use Value: <5nA off-leakage at +85°C prevents sensor bias error accumulation over multi-hour sampling intervals. | Use Scenario: Hold capacitor charging path in precision data acquisition systems requiring sub-LSB settling. IC Role / Device Role / Timing Role: Low-charge-injection switch (10pC max) minimizing hold-step error during acquisition phase. Use Value: Predictable 10pC injection enables deterministic correction algorithms in 18-bit SAR ADC systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1414BRUZ | Quad SPST, NC; 80Ω RON max, but requires ≥±5V supplies only; no unipolar support | Optimized for high-speed (120ns tON) PCB test systems; lacks DG444CY+'s +10V to +30V unipolar range | Select when speed >200ns tON is mandatory and supply rails are strictly bipolar |
| TS5A3157DCKR | Single SPST, NC; 10Ω RON max, 1.65V–5.5V logic, but only 5.5V analog range | Targeted at low-voltage portable audio; cannot handle ±15V signals or industrial bipolar rails | Choose for cost-sensitive, low-voltage (<6V) consumer audio - not a functional replacement for DG444CY+ |
Compared with ADG1414BRUZ and TS5A3157DCKR, the DG444CY+ uniquely combines quad NC topology, ±20V bipolar/30V unipolar operation, and guaranteed RON flatness - making it irreplaceable in legacy industrial test and military-grade analog signal conditioning where supply flexibility and channel matching are non-negotiable.
Availability
DG444CY+ is available at Aetrix Electronics and suitable for test equipment, audio signal routing, and battery-operated systems requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant narrow SO packaging.
Supply support for DG444CY+ 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, communications, and computing markets.
The DG444CY+ belongs to Maxim's precision analog switch product line, engineered for applications demanding low leakage, rail-to-rail signal integrity, and robust ESD performance in harsh electrical environments.
FAQ
What is the operating temperature range for the DG444CY+?
The DG444CY+ is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range is specified in the ordering information table and confirmed in the Absolute Maximum Ratings section. The device uses the "CY" suffix to denote this grade, distinguishing it from wider-range variants like DG444DY (−40°C to +85°C). Thermal derating applies above +70°C per the SO package power dissipation curve.
Does the DG444CY+ support single-supply operation?
Yes, the DG444CY+ supports single-supply operation from +10V to +30V, with V− connected to ground. Electrical Characteristics tables explicitly list unipolar test conditions (e.g., V+ = 12V, V− = 0), and the Applications Information section confirms this configuration. However, RON matching and flatness specs are guaranteed only under bipolar supply conditions per datasheet Note 4.
What is the logic polarity of the DG444CY+ control inputs?
The DG444CY+ IN1–IN4 inputs are active-low: a logic low (≤0.8V) closes the normally closed switch, while a logic high (≥2.4V) opens it. This is confirmed in the Functional Diagram (top view showing "LOGIC SWITCH 0 → ON") and Truth Table equivalents in the Pin Configurations section. The device does not invert logic sense - low input = closed path.
Can the DG444CY+ handle ±15V analog signals reliably?
Yes, the DG444CY+ guarantees full parametric performance - including 85Ω max RDS(ON), 9Ω max RFLAT(ON), and <5nA leakage - across a ±15V analog signal range. This is explicitly stated in the Analog Signal Range row of the Electrical Characteristics table (−15V to +15V) and verified in Typical Operating Characteristics plots (e.g., DG444/5-4 through DG444/5-7).
Is the DG444CY+ pin-compatible with legacy DG444 devices?
Yes, the DG444CY+ is a plug-in upgrade for industry-standard DG444 devices in the same narrow SO-16 package. The General Description states "Plug-In Upgrades for Industry-Standard DG444/DG445", and the Pin Description table confirms identical pin functions and numbering for SO packages. No PCB layout changes are required when replacing older DG444CY or DG444CJ variants.
DG444CY+ 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, 140ns
- -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
DG444CY+ FAQ
1.How can I place an order for DG444CY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG444CY+ 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 DG444CY+ reliable?
The price and inventory of DG444CY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG444CY+ is usually 5 days.
3.What payment methods are accepted for DG444CY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG444CY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG444CY+?
DG444CY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG444CY+ 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 DG444CY+?
For technical support, including DG444CY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG444CY+ requirements.
6.How does Aetrix verify that DG444CY+ is sourced from the original manufacturer or authorized distributors?
All DG444CY+ 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 DG444CY+ meets industry standards.
7.What is the process for return or replacement of DG444CY+?
All DG444CY+ units undergo pre-shipment inspection (PSI). If there is an issue with DG444CY+, 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 DG444CY+ part is unused and in its original packaging.
Return procedure for DG444CY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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