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Analog Devices Inc./Maxim Integrated DG442CJ+
- Part No.:
- DG442CJ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DG442CJ+.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:119
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Product details
Overview
DG442CJ+ from Maxim Integrated is a quad, normally open (NO), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in bipolar or single-supply systems. It features 85Ω max on-resistance, <5nA off-leakage at +85°C, 10pC max charge injection, rail-to-rail analog signal handling (±15.5V), and TTL/CMOS-compatible logic inputs - enabling use in test equipment front-ends and battery-powered instrumentation.
For engineers reviewing the DG442CJ+ datasheet, DG442CJ+ pinout, DG442CJ+ application, or DG442CJ+ equivalent, key selection criteria include guaranteed on-resistance matching (4Ω max between channels), on-resistance flatness (9Ω max over signal range), dual-supply operation (±4.5V to ±20V), single-supply support (+10V to +30V), and 2000V ESD tolerance per Method 3015.7.
Technical Context
The DG442CJ+ implements four independent SPST switches with complementary control logic: logic high enables conduction (ON), logic low disables (OFF). Its silicon-gate 44V process ensures robust operation across wide supply ranges and temperature extremes (0°C to +70°C).
Switching performance is characterized by sub-250ns turn-on (tON) and sub-170ns turn-off (tOFF) times under ±15V supplies, while leakage and charge injection are tightly controlled to support precision sample-and-hold and audio routing applications where signal integrity and settling accuracy are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (rDS(ON)) | 85Ω max - ensures minimal signal attenuation and voltage drop in analog paths up to ±15.5V. |
| On-Resistance Match | 4Ω max - guarantees consistent gain/attenuation across all four channels in multi-path signal conditioning. |
| On-Resistance Flatness | 9Ω max - maintains stable impedance across full analog input range, critical for linearity in data acquisition. |
| Charge Injection | 10pC max - limits voltage glitch on hold capacitors, enabling accurate sampling in precision S/H circuits. |
| Off-Leakage Current | <5nA at +85°C - preserves signal integrity in high-impedance sensor interfaces and long-duration hold states. |
| Supply Range | ±4.5V to ±20V (bipolar) or +10V to +30V (single) - supports industrial, test, and portable system power architectures. |
| ESD Tolerance | 2000V min per Method 3015.7 - enhances reliability during handling and in harsh electromagnetic environments. |
Pinout & Package
DG442CJ+ is housed in a 16-pin plastic DIP package with through-hole mounting. The exposed pad is not present - this variant uses standard leadframe construction without thermal EP.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 9, 8 | IN1–IN4 | Logic control inputs: high = switch ON (normally open configuration). |
| 2, 15, 10, 7 | D1–D4 | Analog drain terminals - bidirectional current path, connected to load side of switch. |
| 3, 14, 11, 6 | S1–S4 | Analog source terminals - bidirectional current path, connected to signal source side. |
| 4 | V− | Negative supply rail - must be referenced to GND; sets lower bound of analog signal range. |
| 5 | GND | Ground reference for logic inputs and internal biasing - separate from analog ground in mixed-signal layouts. |
| 12 | V+ | Positive supply rail - also tied to substrate; sets upper bound of analog signal range and powers internal logic. |
| 13 | N.C. | No internal connection - must remain unconnected; no routing or grounding allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Supports signals from V− to V+ (±15.5V typical), eliminating level-shifting in wide-dynamic-range systems. |
| TTL/CMOS logic compatibility | Accepts 0.8V low / 2.4V high thresholds - interoperable with standard microcontrollers and FPGAs without interface buffers. |
| Low power consumption | 1.65mW max - enables integration into battery-operated test gear and portable instrumentation with minimal thermal impact. |
| Guaranteed rFLAT(ON) | 9Ω max variation across full analog range - ensures amplitude consistency in multi-channel multiplexers and programmable gain stages. |
| Improved off-leakage vs. temp | <5nA at +85°C - reduces drift and error accumulation in high-impedance sensor front-ends and long-integration-time measurements. |
Applications
| Test Equipment Signal Routing | Portable Data Acquisition Front-End |
|---|---|
|
Use Scenario: Multiplexing multiple sensor inputs into a shared ADC channel in automated test equipment. IC Role / Device Role / Timing Role: Quad SPST switch providing isolated, low-distortion analog signal paths under digital control. Use Value: 85Ω max rDS(ON) and 9Ω max rFLAT(ON) preserve signal fidelity across channels; 10pC charge injection prevents hold-capacitor voltage error. |
Use Scenario: Selecting between thermocouple, RTD, and voltage inputs in handheld multimeters or field sensors. IC Role / Device Role / Timing Role: Precision analog switch enabling flexible input configuration with minimal added noise or offset. Use Value: <5nA off-leakage at +85°C maintains accuracy in high-Z sensor interfaces; ±20V bipolar supply supports wide industrial signal ranges. |
| Audio Signal Path Switching | Battery-Powered Instrumentation |
|
Use Scenario: Routing line-level or microphone signals in professional audio mixers or studio interfaces. IC Role / Device Role / Timing Role: Low-distortion, bidirectional analog switch with fast tON/tOFF for real-time channel selection. Use Value: Sub-250ns switching enables glitch-free mute/unmute; rail-to-rail operation preserves full dynamic range of audio signals. |
Use Scenario: Power management and signal path control in portable oscilloscopes or spectrum analyzers. IC Role / Device Role / Timing Role: Low-power analog switch enabling selective activation of sensor chains and signal conditioning blocks. Use Value: 1.65mW max power dissipation extends battery life; single-supply +12V operation simplifies power architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG442BRZ | 80Ω max rDS(ON), 25nA max off-leakage at +85°C, 15pC charge injection, SOIC-16 package. | Higher leakage and charge injection limit use in ultra-low-drift S/H or high-Z sensor paths. | Preferred when SOIC footprint is required and leakage specs are relaxed. |
| TS5A23157DCUR | 0.9Ω typical rDS(ON), but limited to +5.5V supply; 30pC charge injection; 6-pin SC70 package. | Not suitable for ±15V or high-voltage signal routing; optimized for low-voltage portable logic-level switching. | Select only for low-voltage, low-Ron applications where supply headroom is constrained. |
Compared with ADG442BRZ and TS5A23157DCUR, DG442CJ+ uniquely balances high-voltage capability (±20V), low leakage (<5nA), and tight rDS(ON) matching (4Ω) - making it the only option among the three qualified for precision test equipment operating across industrial temperature and supply ranges.
Availability
DG442CJ+ is available at Aetrix Electronics and suitable for test equipment signal routing, portable data acquisition front-ends, and battery-powered instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for DG442CJ+ 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 precision analog, mixed-signal, and high-reliability semiconductor solutions for industrial, communications, and computing markets.
DG442CJ+ belongs to Maxim's legacy high-voltage analog switch family, engineered specifically for robust signal routing in test, measurement, and military-grade systems demanding wide supply range, low leakage, and guaranteed matching.
FAQ
What is the maximum analog signal voltage range supported by DG442CJ+?
DG442CJ+ supports rail-to-rail analog signals from V− to V+, with a specified analog-signal range of ±15.5V under ±16.5V supplies. When operated from a +12V single supply (V− = 0V), the analog range extends from 0V to +12V. This capability allows DG442CJ+ to interface directly with industrial sensors, audio line drivers, and test equipment signal sources without external level shifting.
Does DG442CJ+ require matched supply rails for bipolar operation?
No - DG442CJ+ supports unbalanced supplies such as +24V and −5V, provided the difference between V+ and V− does not exceed +44V. The device maintains specified performance across the full bipolar range of ±4.5V to ±20V, and its on-resistance matching and flatness are guaranteed only under bipolar-supply conditions per the datasheet. DG442CJ+ remains functional but may exhibit degraded rFLAT(ON) and ΔrDS(ON) when used with highly asymmetric rails.
How is the "N.C." pin (Pin 13) used in DG442CJ+?
Pin 13 of DG442CJ+ is labeled N.C. (Not Internally Connected) and must remain unconnected - neither grounded nor tied to any voltage. It serves no electrical function and is reserved for mechanical or future revision purposes. Connecting Pin 13 risks introducing parasitic coupling or violating absolute maximum ratings; the DG442CJ+ datasheet explicitly prohibits routing or soldering to this pin.
What logic families are compatible with DG442CJ+ control inputs?
DG442CJ+ accepts TTL- and CMOS-compatible logic levels: VINL ≤ 0.8V (guaranteed OFF) and VINH ≥ 2.4V (guaranteed ON) over temperature. It interfaces directly with 3.3V and 5V microcontrollers, FPGAs, and logic gates without level shifters. Input currents are limited to ±5nA at +25°C, minimizing loading on driving circuitry - a key design advantage confirmed in the DG442CJ+ electrical characteristics table.
Is DG442CJ+ suitable for sample-and-hold (S/H) circuitry?
Yes - DG442CJ+ is explicitly validated for sample-and-hold applications due to its 10pC max charge injection, <5nA off-leakage at +85°C, and guaranteed on-resistance flatness (9Ω max). These parameters minimize hold-step error and droop rate in precision S/H stages. The DG442CJ+ datasheet includes Figure 3 (Charge Injection Test Circuit) and lists "Sample-and-Hold Circuits" as a primary application, confirming its suitability for metrology-grade designs.
DG442CJ+ 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DG442CJ+ FAQ
1.How can I place an order for DG442CJ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG442CJ+ 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 DG442CJ+ reliable?
The price and inventory of DG442CJ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG442CJ+ is usually 5 days.
3.What payment methods are accepted for DG442CJ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG442CJ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG442CJ+?
DG442CJ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG442CJ+ 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 DG442CJ+?
For technical support, including DG442CJ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG442CJ+ requirements.
6.How does Aetrix verify that DG442CJ+ is sourced from the original manufacturer or authorized distributors?
All DG442CJ+ 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 DG442CJ+ meets industry standards.
7.What is the process for return or replacement of DG442CJ+?
All DG442CJ+ units undergo pre-shipment inspection (PSI). If there is an issue with DG442CJ+, 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 DG442CJ+ part is unused and in its original packaging.
Return procedure for DG442CJ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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