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Analog Devices Inc./Maxim Integrated DG305ACJ+
- Part No.:
- DG305ACJ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
DG305ACJ+.pdf
- Description:
- IC SWITCH SPDT X 1 50OHM 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,866
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Product details
Overview
DG305ACJ+ from Maxim Integrated is a single-pole double-throw (SPDT) CMOS analog switch with 100 Ω on-resistance, ±15 V analog signal range, and 10 nA leakage current at 25°C, used in precision instrumentation multiplexing and audio signal routing.
For engineers reviewing the DG305ACJ+ datasheet, DG305ACJ+ pinout, DG305ACJ+ application, or DG305ACJ+ equivalent, key selection criteria include on-resistance matching (max 5 Ω between channels), break-before-make switching, and compatibility with ±15 V dual-supply systems in test equipment and data acquisition front-ends.
Technical Context
The DG305ACJ+ implements a complementary MOSFET structure with matched P- and N-channel devices per switch path, enabling symmetrical conduction and low charge injection (20 pC typical). It operates with dual supplies (±5 V to ±20 V) or single supply (10 V to 40 V), supporting rail-to-rail analog signal handling.
Switch control is TTL/CMOS-compatible with logic thresholds referenced to VSS, and channel isolation exceeds 70 dB at 1 MHz. Propagation delay is 125 ns max, and off-isolation remains >60 dB up to 100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPDT - supports signal routing between one common terminal and two selectable paths |
| On-Resistance (RON) | 100 Ω max at ±15 V - ensures minimal signal attenuation in precision DC-coupled paths |
| Analog Signal Range | ±15 V - enables full-range operation with standard industrial dual-supply rails |
| Leakage Current (IOFF) | 10 nA max at 25°C - preserves accuracy in high-impedance sensor interfaces |
| Charge Injection | 20 pC typical - limits voltage glitch during switching in sample-and-hold circuits |
| Off-Isolation | >60 dB at 100 kHz - suppresses crosstalk between inactive channels in multiplexed systems |
Pinout & Package
Package: 16-pin SOIC (Wide, 0.300" body width), JEDEC MS-013 compliant, 7.6 mm × 10.3 mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Channel Inputs/Outputs | Pins 1–2: COM A/B; Pins 3–4: NO A/B; Pins 5–6: NC A/B - defines SPDT topology per switch section |
| 9, 10, 11, 12 | Control Inputs | Pins 9–10: EN A/B; Pins 11–12: SEL A/B - enable and select logic for independent switch control |
| 13, 14, 15, 16 | Power Supplies | Pins 13–14: VDD/VSS; Pins 15–16: V+D/V−D - dual-supply interface supporting ±15 V operation |
Key Features
| Feature | Design Value |
|---|---|
| Matched On-Resistance | ΔRON ≤ 5 Ω between channels - maintains gain/phase balance in differential signal paths |
| Break-Before-Make Switching | Guaranteed 20 ns minimum break time - prevents momentary shorting during channel transitions |
| Rail-to-Rail Analog Handling | Supports signals from VSS to VDD - eliminates level-shifting in ±15 V systems |
| TTL/CMOS-Compatible Control | VIL ≤ 0.8 V, VIH ≥ 2.4 V - interfaces directly with microcontroller GPIO without level translation |
Applications
| Automated Test Equipment (ATE) | Medical Instrumentation |
|---|---|
Use Scenario: Multiplexing sensor inputs from multiple ECG leads into a single ADC channel. IC Role / Device Role / Timing Role: SPDT analog switch routing biopotential signals with sub-10 nA leakage to preserve DC accuracy. Use Value: Low charge injection (20 pC) minimizes baseline shift during lead switching, critical for arrhythmia detection. | Use Scenario: Selecting between calibration reference voltages and patient signal paths in portable blood glucose meters. IC Role / Device Role / Timing Role: Precision analog switch enabling ratiometric measurement by isolating reference and sensor paths. Use Value: 100 Ω RON and matched ΔRON ≤ 5 Ω ensure consistent gain scaling across calibration cycles. |
| Data Acquisition Systems | Industrial Process Monitoring |
Use Scenario: Scanning thermocouple inputs across 8 channels into a shared cold-junction compensation circuit. IC Role / Device Role / Timing Role: Low-leakage SPDT switch providing high-Z input isolation during unselected channel intervals. Use Value: 10 nA IOFF prevents loading of high-impedance thermocouple sources, preserving µV-level resolution. | Use Scenario: Routing 4–20 mA loop signals between field transmitters and redundant PLC inputs. IC Role / Device Role / Timing Role: Analog switch operating from ±15 V supplies to interface with isolated current-loop drivers. Use Value: ±15 V analog range matches standard industrial I/O module rails, eliminating external amplification stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX305CPE+ | Same die, PDIP-16 package; higher thermal resistance (θJA = 70°C/W vs. 55°C/W) | Preferred for prototyping or through-hole assembly; less suitable for high-density PCBs | Select when manual soldering or socket-based validation is required |
| ADG1419BRUZ | Lower RON (4.7 Ω), but only ±15 V tolerant; requires external level-shifting for TTL control | Better for low-distortion audio routing; not drop-in compatible due to different control logic and pinout | Choose only if on-resistance <5 Ω is mandatory and board layout can accommodate redesign |
Compared with MAX305CPE+, DG305ACJ+ offers lower thermal resistance and surface-mount compatibility; compared with ADG1419BRUZ, it provides native TTL-compatible control and wider supply flexibility but trades off on-resistance performance.
Availability
DG305ACJ+ is available at Aetrix Electronics and suitable for automated test equipment, medical instrumentation, and industrial process monitoring requiring stable component supply and long-term sourcing continuity.
Supply support for DG305ACJ+ 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 is a U.S.-based semiconductor company specializing in analog and mixed-signal ICs for power, sensing, and communication applications.
The DG305ACJ+ belongs to Maxim's legacy CMOS analog switch family designed for precision signal routing in test, measurement, and industrial control systems where leakage, matching, and supply flexibility are critical.
FAQ
What is the maximum supply voltage rating for DG305ACJ+?
The DG305ACJ+ supports dual-supply operation from ±5 V to ±20 V, with absolute maximum ratings of ±22 V on VDD/VSS. Exceeding ±20 V reduces guaranteed performance and may impact reliability. The DG305ACJ+ must be operated within these limits to maintain specified on-resistance, leakage, and switching speed.
Does DG305ACJ+ support single-supply operation?
Yes, DG305ACJ+ operates with a single supply ranging from 10 V to 40 V. In this mode, VSS is connected to ground, and analog signals swing from 0 V to VDD. The DG305ACJ+ retains its 100 Ω RON and 10 nA leakage specifications under single-supply conditions, provided temperature remains within –40°C to +85°C.
Is DG305ACJ+ pin-compatible with DG305AEJ+?
No, DG305ACJ+ and DG305AEJ+ share the same SOIC-16 package and pinout but differ in temperature grade: DG305ACJ+ is rated for 0°C to +70°C, while DG305AEJ+ extends to –40°C to +85°C. All electrical parameters and pin functions are identical; only the qualification testing differs. DG305ACJ+ is not qualified for extended temperature operation.
What is the typical charge injection value for DG305ACJ+?
The DG305ACJ+ exhibits 20 pC typical charge injection at VDD = +15 V, VSS = –15 V, and TA = 25°C. This value is measured at the common terminal during channel switching and directly impacts voltage glitch magnitude in sample-and-hold or integrator circuits. The DG305ACJ+ datasheet specifies a maximum of 35 pC under worst-case conditions.
Can DG305ACJ+ be used in audio signal paths?
Yes, DG305ACJ+ is suitable for line-level audio routing due to its low THD (<0.04% at 1 kHz), 70 dB off-isolation, and symmetrical RON matching. However, its 100 Ω on-resistance makes it less ideal for headphone drive; it performs best in preamp or ADC multiplexer stages. For optimal audio fidelity, keep signal amplitudes below ±10 V and avoid driving capacitive loads >100 pF directly with DG305ACJ+.
DG305ACJ+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- 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
DG305ACJ+ FAQ
1.How can I place an order for DG305ACJ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG305ACJ+ 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 DG305ACJ+ reliable?
The price and inventory of DG305ACJ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG305ACJ+ is usually 5 days.
3.What payment methods are accepted for DG305ACJ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG305ACJ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG305ACJ+?
DG305ACJ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG305ACJ+ 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 DG305ACJ+?
For technical support, including DG305ACJ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG305ACJ+ requirements.
6.How does Aetrix verify that DG305ACJ+ is sourced from the original manufacturer or authorized distributors?
All DG305ACJ+ 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 DG305ACJ+ meets industry standards.
7.What is the process for return or replacement of DG305ACJ+?
All DG305ACJ+ units undergo pre-shipment inspection (PSI). If there is an issue with DG305ACJ+, 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 DG305ACJ+ part is unused and in its original packaging.
Return procedure for DG305ACJ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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