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Analog Devices Inc./Maxim Integrated DG444CJ+
- Part No.:
- DG444CJ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DG444CJ+.pdf
- Description:
- IC SWITCH SPST-NCX4 85OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,286
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Product details
Overview
DG444CJ+ 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 systems requiring low charge injection (10pC max) and high ESD tolerance (2000V min).
For engineers reviewing the DG444CJ+ datasheet, DG444CJ+ pinout, DG444CJ+ application, or DG444CJ+ equivalent, key selection criteria include guaranteed RON flatness (9Ω max), TTL/CMOS logic compatibility, dual-supply operation (±4.5V to ±20V), fast switching (tON < 250ns), and 16-pin plastic DIP packaging with NC configuration.
Technical Context
The DG444CJ+ implements four independent SPST switches with normally closed topology, controlled by active-low logic inputs (IN1–IN4). Its silicon-gate 44V process enables robust operation across wide supply ranges and ensures low leakage over temperature.
It supports both bipolar (±4.5V to ±20V) and single-supply (+10V to +30V) configurations, with VL pin configurable for TTL (5V) or CMOS (V+) logic-level compatibility. Signal paths are bidirectional, with rail-to-rail analog voltage handling and guaranteed on-resistance flatness only under bipolar operation per datasheet Note 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST, normally closed (NC) - all four switches conduct when logic input = 0V |
| On-Resistance (RDS(ON)) | 85Ω max at V+ = 15V, V− = −15V, IS = −10mA - ensures minimal signal attenuation in precision analog paths |
| RON Matching | 4Ω max between channels - critical for matched gain/attenuation in multi-channel instrumentation |
| Charge Injection | 10pC max - limits voltage glitch in sample-and-hold and switched-capacitor circuits |
| Off-Leakage Current | <5nA at +85°C - preserves accuracy in high-impedance sensor interfaces and battery-backed systems |
| Supply Range | Bipolar: ±4.5V to ±20V; Single: +10V to +30V - supports industrial, military, and portable designs without level-shifting |
| ESD Tolerance | 2000V min per Method 3015.7 - enhances reliability during board handling and system integration |
Pinout & Package
Package: 16-pin plastic DIP (0°C to +70°C operating range), through-hole mount, JEDEC MS-001 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | S1–S4 (Sources) | Analog source terminals for NC switches; connected internally to D pins when enabled |
| 5 | GND | Ground reference for logic and substrate; must be tied to system ground |
| 6, 7, 8, 9 | D1–D4 (Drains) | Analog drain terminals; output side of each NC switch |
| 10 | VL | Logic supply input - set to 5V for TTL compatibility or V+ for CMOS-compatible thresholds |
| 11, 12, 13, 14 | IN1–IN4 | Active-low logic control inputs - low = switch closed (S-D path conductive) |
| 15 | V− | Negative supply rail - required for bipolar operation; tied to 0V for single-supply use |
| 16 | V+ | Positive supply rail - also connected to substrate; absolute max 44V referenced to V− |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON flatness | 9Ω max over full ±15V analog signal range - maintains consistent gain/loss across input voltage swing |
| Low power consumption | 35µW max total supply current - extends battery life in portable instrumentation |
| Rail-to-rail signal handling | Supports analog signals from V− to V+ - eliminates need for external biasing in DC-coupled paths |
| TTL/CMOS logic compatibility | Input thresholds fixed by VL pin - simplifies interface with microcontrollers and FPGAs without level shifters |
| Improved off-leakage vs. temp | <5nA at +85°C - outperforms legacy DG444 variants in high-temp industrial environments |
Applications
| Test Equipment | Audio Signal Routing |
|---|---|
Use Scenario: Automated test systems switching calibration references and DUT signal paths under software control. IC Role / Device Role / Timing Role: Quad NC analog switch enabling sequential connection of precision voltage sources to measurement front-ends. Use Value: 4Ω RON matching ensures channel-to-channel gain consistency; low charge injection prevents settling errors in 16-bit ADC sampling. |
Use Scenario: Programmable audio mixer selecting between microphone preamp outputs and line-level inputs. IC Role / Device Role / Timing Role: Low-distortion analog path selector with rail-to-rail capability for ±12V audio rails. Use Value: 85Ω RDS(ON) and 100dB crosstalk minimize inter-channel bleed; 2000V ESD protects against user-handling events. |
| Battery-Operated Systems | Sample-and-Hold Circuits |
Use Scenario: Portable data loggers multiplexing thermocouple, RTD, and voltage sensor inputs to a shared ADC. IC Role / Device Role / Timing Role: Low-power, low-leakage analog switch isolating high-impedance sensors during idle cycles. Use Value: <5nA off-leakage at +85°C preserves measurement integrity over extended field deployments; 35µW total power minimizes quiescent drain. |
Use Scenario: Precision acquisition systems capturing transient waveforms with sub-microsecond hold timing. IC Role / Device Role / Timing Role: Fast-switching (tON < 250ns), low-charge-injection switch controlling hold capacitor connection. Use Value: 10pC max charge injection limits hold-step error to <1 LSB in 16-bit systems; 9Ω RON flatness ensures linear sampling across full input range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG444BRZ | Quad NC SPST; 75Ω max RDS(ON); 16-pin SOIC; −40°C to +85°C rating | Lower RON but higher charge injection (25pC); requires reflow-compatible layout | Preferred for wider temperature range and surface-mount assembly; not drop-in due to package and leakage profile |
| MAX4617CPE+ | Quad NC SPST; 60Ω max RDS(ON); 16-pin PDIP; 0°C to +70°C; 12V single-supply only | Optimized for +12V systems; lacks bipolar support and RON flatness guarantee | Valid for cost-sensitive 12V-only designs where ±15V operation and flatness are not required |
Compared with DG444CJ+, ADG444BRZ offers better on-resistance but trades off charge injection and temperature range, while MAX4617CPE+ simplifies supply design at the expense of analog range flexibility and matching performance.
Availability
DG444CJ+ is available at Aetrix Electronics and suitable for test equipment, audio signal routing, and battery-operated systems requiring stable component supply, long-term obsolescence management, and traceable sourcing from authorized channels.
Supply support for DG444CJ+ 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The DG444CJ+ belongs to Maxim's precision analog switch product line, engineered for signal integrity in demanding instrumentation, military radios, and guidance systems where leakage, matching, and ESD robustness are critical.
FAQ
What is the operating temperature range for DG444CJ+?
The DG444CJ+ is rated for 0°C to +70°C ambient operation, as confirmed in the Ordering Information table. This commercial-grade temperature range aligns with its 16-pin plastic DIP packaging and is validated across all electrical specifications including leakage, RON, and switching times. For extended temperature operation, consider DG444DJ (−40°C to +85°C) in the same DIP package.
Does DG444CJ+ support single-supply operation?
Yes, DG444CJ+ supports single-supply operation from +10V to +30V, with V− tied to ground. The datasheet specifies analog signal range as 0V to V+ under this configuration, and all key parameters-including 85Ω max RDS(ON) and <5nA off-leakage-are guaranteed across the full temperature range. Logic compatibility remains via VL pin setting.
What is the logic polarity of DG444CJ+ switches?
DG444CJ+ implements normally closed (NC) switches with active-low control: a logic low (≤0.8V) on IN1–IN4 closes the corresponding S–D path, while a logic high (≥2.4V) opens it. This behavior is explicitly defined in the Functional Diagram and Truth Table sections, and applies identically across all four channels.
Can DG444CJ+ handle bipolar analog signals?
Yes, DG444CJ+ fully supports bipolar analog signals from V− to V+ when operated with dual supplies (±4.5V to ±20V). The datasheet guarantees rail-to-rail signal handling, 9Ω max RON flatness, and <5nA off-leakage under these conditions. Bipolar operation is required to meet the RON flatness and matching specifications cited in the New Features section.
Is DG444CJ+ pin-compatible with legacy DG444 devices?
Yes, DG444CJ+ maintains identical pinout, package (16-pin PDIP), and functional behavior as the original DG444, serving as a plug-in upgrade per the datasheet's "New Features" section. All electrical and timing parameters are backward-compatible, with improvements in RON match, flatness, charge injection, and off-leakage-requiring no PCB or firmware changes.
DG444CJ+ 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DG444CJ+ FAQ
1.How can I place an order for DG444CJ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG444CJ+ 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 DG444CJ+ reliable?
The price and inventory of DG444CJ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG444CJ+ is usually 5 days.
3.What payment methods are accepted for DG444CJ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG444CJ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG444CJ+?
DG444CJ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG444CJ+ 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 DG444CJ+?
For technical support, including DG444CJ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG444CJ+ requirements.
6.How does Aetrix verify that DG444CJ+ is sourced from the original manufacturer or authorized distributors?
All DG444CJ+ 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 DG444CJ+ meets industry standards.
7.What is the process for return or replacement of DG444CJ+?
All DG444CJ+ units undergo pre-shipment inspection (PSI). If there is an issue with DG444CJ+, 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 DG444CJ+ part is unused and in its original packaging.
Return procedure for DG444CJ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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