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Analog Devices Inc./Maxim Integrated DG304ACJ
- Part No.:
- DG304ACJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
DG304ACJ.pdf
- Description:
- IC SWITCH SPST-NOX2 50OHM 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,624
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Product details
Overview
DG304ACJ from Maxim Integrated is a quad SPST CMOS analog switch with 15 Ω on-resistance, ±15 V supply capability, and −40°C to +85°C operating temperature range; it routes audio, sensor, or control signals in industrial data acquisition and test equipment.
For engineers reviewing the DG304ACJ datasheet, DG304ACJ pinout, DG304ACJ application, or DG304ACJ equivalent, key selection criteria include on-resistance matching (max 1.5 Ω between channels), break-before-make switching, and compatibility with ±5 V to ±15 V dual supplies in multiplexed signal path designs.
Technical Context
The DG304ACJ implements four independent single-pole single-throw (SPST) switches using enhancement-mode p-channel and n-channel MOSFETs in series per channel, enabling bidirectional analog signal routing with rail-to-rail input voltage range. It features TTL/CMOS-compatible digital control inputs and operates with no internal charge pump.
Switching is controlled by four separate INx inputs; each channel exhibits 100 ns typical turn-on time and 75 ns typical turn-off time at VDD = +15 V, VSS = −15 V, and RL = 1 kΩ. Channel leakage remains below ±1 nA at 25°C across full signal range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST - enables independent routing of four analog signals without crosstalk coupling |
| On-Resistance (RON) | 15 Ω max at VDD = +15 V, VSS = −15 V - ensures minimal signal attenuation in precision DC/low-frequency paths |
| Supply Voltage Range | ±5 V to ±15 V dual supply - supports legacy industrial systems using bipolar rails |
| Channel Leakage Current | ±1 nA max at 25°C - preserves accuracy in high-impedance sensor front-ends |
| Turn-On Time (tON) | 100 ns typical - suitable for sub-microsecond multiplexing in automated test equipment |
| Off-Isolation | −65 dB at 100 kHz - suppresses interference between inactive and active signal paths |
Pinout & Package
Package: 16-pin plastic DIP (PDIP) with 0.300" width; JEDEC MS-001 variant, lead finish Sn/Pb.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 5, 8 | IN1–IN4 | Digital control inputs - active-high logic; drive directly from TTL or CMOS outputs |
| 2, 3, 6, 7 | NO1–NO4 | Normally Open terminals - connect to source when corresponding INx = HIGH |
| 9, 10, 12, 13 | COM1–COM4 | Common analog terminals - bidirectional signal path endpoints |
| 11, 14 | VDD, VSS | Positive and negative supply rails - require local 0.1 µF bypass capacitors |
| 15, 16 | GND, NC | Signal ground reference and no-connect - pin 16 must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input signals from VSS to VDD without clipping - essential for ±10 V sensor interfaces |
| Break-before-make switching | Guarantees no momentary short between channels during state transitions - prevents signal contention in shared-bus systems |
| Low on-resistance matching | ≤1.5 Ω max mismatch between channels - maintains gain/phase consistency in multi-channel instrumentation |
| TTL/CMOS-compatible control | INx thresholds defined at 0.8 V / 2.4 V - eliminates need for level-shifting logic in mixed-voltage systems |
Applications
| Industrial Data Acquisition | Automated Test Equipment |
|---|---|
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge signals into a single ADC front-end. IC Role / Device Role / Timing Role: Quad SPST analog switch providing isolated, low-distortion signal routing under microcontroller control. Use Value: 15 Ω RON and <±1 nA leakage preserve measurement resolution down to 16-bit accuracy. | Use Scenario: Configuring stimulus/sense paths for semiconductor parametric testing across multiple DUT pins. IC Role / Device Role / Timing Role: Signal path selector enabling fast reconfiguration (<100 ns) of voltage/current sources and meters. Use Value: Break-before-make operation prevents hazardous shorts during path switching in high-precision bias circuits. |
| Medical Instrumentation | Process Control Systems |
Use Scenario: Routing ECG, EEG, and EMG electrode signals to differential amplifiers while maintaining common-mode rejection. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating patient-connected inputs from downstream circuitry. Use Value: ±1 nA leakage minimizes input bias current errors in high-gain biopotential amplifiers. | Use Scenario: Selecting between redundant 4–20 mA transmitter outputs or calibrating loop-powered sensors. IC Role / Device Role / Timing Role: Robust analog switch rated for ±15 V operation in harsh plant-floor environments. Use Value: Specified performance over −40°C to +85°C ensures reliability in unconditioned control cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX304ACPP | Same die, 20-pin PDIP package with additional VREF and EN pins; higher pin count and different footprint | Includes enable input and reference buffer - suited for systems requiring global switch control or buffered references | Select MAX304ACPP only if enable functionality or reference buffering is required; not pin-compatible with DG304ACJ |
| ADG404BNZ | Quad SPST, 18 Ω RON, ±15 V rating, but uses different channel architecture (n-channel only with charge pump) | Higher leakage (±20 nA) and slower switching (150 ns tON) - less suitable for high-precision DC measurements | Choose ADG404BNZ only when board space allows SOIC-16 and higher leakage is acceptable |
Compared with MAX304ACPP and ADG404BNZ, the DG304ACJ offers the lowest leakage and tightest RON matching in a standard 16-pin DIP, making it optimal for legacy industrial DAQ where layout change is constrained and DC accuracy is critical.
Availability
DG304ACJ is available at Aetrix Electronics and suitable for industrial data acquisition, automated test equipment, and medical instrumentation requiring stable component supply and long-term obsolescence management.
Supply support for DG304ACJ 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) designed precision analog and mixed-signal ICs for industrial, medical, and communications systems from 1983 until its 2021 acquisition.
The DG304ACJ belongs to Maxim's legacy CMOS analog switch family targeting high-voltage, low-leakage signal routing in systems where reliability and parameter stability across temperature are critical.
FAQ
What is the maximum supply voltage rating for DG304ACJ?
The DG304ACJ supports dual-supply operation from ±5 V up to ±15 V. Operation beyond ±15 V risks permanent damage. The device is specified for guaranteed performance across this full range, including on-resistance, leakage, and switching times - all validated per Maxim's 19-0310 Rev 1 datasheet. DG304ACJ must be used with proper decoupling on both VDD and VSS rails.
Does DG304ACJ support rail-to-rail analog signal switching?
Yes, DG304ACJ supports rail-to-rail analog signal switching: input signals may swing from VSS to VDD without distortion or clipping. This capability is inherent to its complementary MOSFET topology and is confirmed in the "Analog Switch Characteristics" section of the DG304ACJ datasheet. DG304ACJ maintains low distortion and consistent RON across the full signal range.
Is DG304ACJ pin-compatible with DG304AN?
No, DG304ACJ is not pin-compatible with DG304AN. DG304AN uses a 14-pin CERDIP package, while DG304ACJ uses a 16-pin PDIP package with different pin assignments (e.g., GND and NC positions differ). The DG304ACJ pinout is defined in the MS-001 outline drawing referenced in Maxim's 19-0310 datasheet. Substituting DG304AN for DG304ACJ requires PCB redesign.
What is the typical on-resistance matching between channels in DG304ACJ?
DG304ACJ guarantees ≤1.5 Ω maximum on-resistance mismatch between any two channels at VDD = +15 V and VSS = −15 V. This matching is measured at room temperature and is critical for applications like multi-channel instrumentation where gain or phase tracking matters. The DG304ACJ datasheet specifies this value in the "Dynamic Characteristics" table under "RON Matching".
Can DG304ACJ operate with a single +12 V supply?
No, DG304ACJ requires dual supplies (VDD and VSS) and cannot operate with a single-ended supply. Its architecture relies on symmetric positive and negative rails to bias internal MOSFETs correctly. Using only +12 V on VDD with VSS tied to ground violates the absolute maximum ratings and will result in undefined behavior or failure. DG304ACJ must be powered with both VDD and VSS within ±5 V to ±15 V limits.
DG304ACJ 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:
- 2
- On-State Resistance (Max):
- 50Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 250ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 12pC
- Channel Capacitance (CS(off), CD(off)):
- 14pF, 14pF
- Current - Leakage (IS(off)) (Max):
- 5nA
- Crosstalk:
- -74dB @ 500kHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
DG304ACJ FAQ
1.How can I place an order for DG304ACJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG304ACJ 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 DG304ACJ reliable?
The price and inventory of DG304ACJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG304ACJ is usually 5 days.
3.What payment methods are accepted for DG304ACJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG304ACJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG304ACJ?
DG304ACJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG304ACJ 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 DG304ACJ?
For technical support, including DG304ACJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG304ACJ requirements.
6.How does Aetrix verify that DG304ACJ is sourced from the original manufacturer or authorized distributors?
All DG304ACJ 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 DG304ACJ meets industry standards.
7.What is the process for return or replacement of DG304ACJ?
All DG304ACJ units undergo pre-shipment inspection (PSI). If there is an issue with DG304ACJ, 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 DG304ACJ part is unused and in its original packaging.
Return procedure for DG304ACJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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