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Analog Devices Inc./Maxim Integrated DG308ADK
- Part No.:
- DG308ADK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
DG308ADK.pdf
- Description:
- IC SW SPST-NOX4 100OHM 16CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,203
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Product details
Overview
DG308ADK from Maxim Integrated is a quad SPST analog switch with normally open (NO) configuration, designed for precision signal routing in bipolar or single-supply systems. It delivers 60Ω typical on-resistance, <130ns turn-on time, and ±15V analog signal range, supporting applications such as test equipment and military radios where low leakage and fast switching are critical.
For engineers reviewing the DG308ADK datasheet, DG308ADK pinout, DG308ADK application, or DG308ADK equivalent, key selection criteria include its -40°C to +85°C operating range, CMOS-compatible logic inputs, 44V breakdown rating, and verified performance under ±15V dual-supply or +5V to +30V single-supply operation.
Technical Context
The DG308ADK implements monolithic CMOS switch architecture with four independent NO channels, each featuring matched rDS(ON) and low charge injection (<10pC). Its substrate-connected V+ pin enables stable operation across wide supply ranges while minimizing latch-up risk.
It supports rail-to-rail analog signal switching up to ±15V with off-isolation of 78dB at 500kHz and channel capacitance of 27pF (CD(ON)+CS(ON)), making it suitable for high-fidelity sample-and-hold and communications signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (rDS(ON)) | 60Ω typical - ensures minimal signal attenuation and gain error in precision analog paths |
| Turn-on time (tON) | 130ns max - enables high-speed multiplexing in automated test equipment |
| Analog signal range | ±15V - supports full-range bipolar signal handling without clipping |
| Supply voltage range | ±5V to ±20V dual or +5V to +30V single - simplifies power architecture in mixed-signal systems |
| Off-isolation (OIRR) | 78dB at 500kHz - suppresses crosstalk between adjacent channels in dense PCB layouts |
| Charge injection | -10pC max - reduces sampling error in precision ADC front-ends |
| Breakdown voltage | 44V - allows safe blocking of 30V peak-to-peak signals during off-state |
Pinout & Package
Package: 16-pin CERDIP (hermetically sealed ceramic dual in-line package), rated for -40°C to +85°C operation and suitable for high-reliability industrial and defense applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 1, 8, 9, 16) | CMOS logic control inputs | Accept 0V/3.5V or 0V/11V logic thresholds; drive internal gate electrodes with <1µA input current |
| S1–S4 (Pins 3, 6, 11, 14) | Source terminals (analog inputs) | Accept bidirectional analog signals within V− to V+ rails; connected to switch channel inputs |
| D1–D4 (Pins 2, 7, 10, 15) | Drain terminals (analog outputs) | Deliver switched analog signals; exhibit matched rDS(ON) and low off-capacitance (11pF CS(OFF)) |
| V+ (Pin 13) | Positive supply / substrate connection | Bias source for NMOS transistors; tied to substrate to prevent parasitic thyristor activation |
| V− (Pin 4) | Negative supply | Reference for NMOS body bias; enables true bipolar operation down to -20V |
| GND (Pin 5) | Ground reference | Logic ground return; isolated from analog signal path to minimize noise coupling |
| N.C. (Pin 12) | No-connect terminal | Not internally bonded - must remain unconnected to avoid parasitic coupling or mechanical stress |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic CMOS construction | Eliminates discrete transistor matching issues and reduces thermal drift across channels |
| Low on-resistance flatness | ≤15Ω variation over ±15V analog range - preserves linearity in programmable-gain amplifier interfaces |
| CMOS-input compatibility | Operates directly with microcontroller GPIOs without level-shifting circuitry |
| High off-state blocking | 30V peak-to-peak analog signal isolation - meets MIL-STD-883 requirements for guidance systems |
| Low leakage currents | ±100nA max ID(OFF)/IS(OFF) at TMAX - prevents DC error accumulation in long-duration sample-and-hold |
Applications
| Test Equipment Signal Routing | Military Radio Front-End Switching |
|---|---|
Use Scenario: Automated test systems route multiple sensor signals to shared ADCs using timed switching sequences. IC Role / Device Role / Timing Role: DG308ADK acts as a precision analog multiplexer, enabling sequential sampling of 4 independent channels with sub-130ns channel settling. Use Value: 60Ω rDS(ON) and 78dB off-isolation minimize inter-channel crosstalk and measurement uncertainty in 16-bit data acquisition. |
Use Scenario: Tactical radios require RF front-end signal path selection under extreme temperature and vibration conditions. IC Role / Device Role / Timing Role: DG308ADK serves as a ruggedized analog switch controlling antenna diversity paths and filter bank selection. Use Value: CERDIP packaging and -40°C to +85°C rating ensure reliable operation in airborne and ground-mobile platforms without derating. |
| Guidance System Sample-and-Hold | PBX/PABX Line Interface |
Use Scenario: Inertial navigation units capture synchronized analog outputs from gyros and accelerometers before digitization. IC Role / Device Role / Timing Role: DG308ADK provides low-charge-injection (<10pC) switching to preserve signal integrity during hold-phase acquisition. Use Value: Minimal pedestal error and <100nA leakage maintain DC accuracy over extended hold times in closed-loop stabilization loops. |
Use Scenario: Private branch exchange systems manage analog voice line connections between trunk and extension ports. IC Role / Device Role / Timing Role: DG308ADK functions as a line-level analog switch enabling dynamic reconfiguration of call paths without relay wear-out. Use Value: 44V breakdown rating safely handles ringing voltages up to 105Vpk, eliminating need for external protection components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1404BRUZ | 4-channel SPST, 4.7Ω rDS(ON), but requires ≥±4.5V supplies; no single-supply operation | Better for low-distortion audio routing; unsuitable for +5V-only systems | Select when ultra-low on-resistance is prioritized and dual supply is available |
| TS5A23157DCUR | Single-supply only (+1.65V to +5.5V), 0.9Ω rDS(ON), but limited to 5.5V max analog range | Ideal for portable battery-powered test gear; cannot handle ±15V signals | Choose for compact, low-voltage designs where high-voltage blocking is unnecessary |
Compared with ADG1404BRUZ and TS5A23157DCUR, the DG308ADK uniquely supports both wide analog voltage range (±15V) and single-supply operation (+5V to +30V), making it irreplaceable in legacy military and industrial systems requiring field-proven reliability and broad supply flexibility.
Availability
DG308ADK is available at Aetrix Electronics and suitable for test equipment, military radios, guidance systems, and PBX/PABX infrastructure requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG308ADK 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, automotive, and communications markets.
The DG308ADK belongs to Maxim's legacy analog switch product line, engineered for high-reliability signal routing in environments demanding wide supply tolerance, low leakage, and hermetic packaging - particularly for defense and aerospace applications.
FAQ
What is the operating temperature range of the DG308ADK?
The DG308ADK is rated for operation from -40°C to +85°C, validated across its full electrical specification range. This extended temperature capability is achieved through CERDIP packaging and process design optimized for thermal stability, making DG308ADK suitable for deployment in avionics, vehicle-mounted radios, and outdoor industrial controllers where ambient extremes are expected.
Can the DG308ADK operate from a single positive supply?
Yes, the DG308ADK supports single-supply operation from +5V to +30V, with analog signals constrained to 0V to V+. When used this way, DG308ADK maintains CMOS-compatible logic inputs and functional switching, though rDS(ON) increases and switching speed decreases slightly versus dual-supply mode - a trade-off documented in Maxim's Applications Information section for DG308ADK.
What is the maximum analog signal voltage the DG308ADK can handle?
The DG308ADK supports analog signals from V− to V+, with absolute maximum ratings specifying V+ ≤ +44V referenced to V−. In standard ±15V operation, this allows ±15V signal swing. For single-supply use at +30V, the analog range is 0V to +30V. Exceeding these limits risks permanent damage, as confirmed in the Absolute Maximum Ratings table for DG308ADK.
Is the DG308ADK pin-compatible with other variants in the DG308A family?
Yes, all DG308A variants - including DG308ACJ, DG308ACK, DG308ADY, and DG308ADK - share identical 16-pin footprints and pin functions. The DG308ADK specifically uses the 16-pin CERDIP package, matching the mechanical and electrical interface of DG308ACK (16-pin CERDIP, 0°C to +70°C), enabling drop-in replacement where extended temperature range is required.
Does the DG308ADK require external pull-up or pull-down resistors on its logic inputs?
No, the DG308ADK features CMOS logic inputs with guaranteed low input current (<1µA) and defined thresholds (3.5V for high, 1.5V for low), allowing direct interfacing with standard microcontroller GPIOs without external biasing. This eliminates board space and power overhead, a verified behavior confirmed in the Input Current specifications and Truth Table sections of the DG308ADK datasheet.
DG308ADK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 13V ~ 36V
- Voltage - Supply, Dual (V±):
- ±7V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 250ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- -10pC
- Channel Capacitance (CS(off), CD(off)):
- 11pF
- Current - Leakage (IS(off)) (Max):
- 100µA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CDIP
DG308ADK FAQ
1.How can I place an order for DG308ADK through Aetrix?
Please submit a Request for Quotation (RFQ) for DG308ADK 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 DG308ADK reliable?
The price and inventory of DG308ADK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG308ADK is usually 5 days.
3.What payment methods are accepted for DG308ADK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG308ADK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG308ADK?
DG308ADK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG308ADK 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 DG308ADK?
For technical support, including DG308ADK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG308ADK requirements.
6.How does Aetrix verify that DG308ADK is sourced from the original manufacturer or authorized distributors?
All DG308ADK 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 DG308ADK meets industry standards.
7.What is the process for return or replacement of DG308ADK?
All DG308ADK units undergo pre-shipment inspection (PSI). If there is an issue with DG308ADK, 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 DG308ADK part is unused and in its original packaging.
Return procedure for DG308ADK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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