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Analog Devices Inc./Maxim Integrated DG308ADY+
- Part No.:
- DG308ADY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG308ADY+.pdf
- Description:
- IC SW SPST-NOX4 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,680
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Product details
Overview
DG308ADY+ from Maxim Integrated is a quad SPST analog switch with normally open (NO) configuration, designed for signal routing in precision analog systems. It delivers 60Ω typical on-resistance, <130ns turn-on time, and supports ±5V to ±20V dual supplies or +5V to +30V single supply - enabling use in military radios and test equipment where rail-to-rail analog switching is required.
For engineers reviewing the DG308ADY+ datasheet, DG308ADY+ pinout, DG308ADY+ application, or DG308ADY+ equivalent, key selection criteria include its -40°C to +85°C operating range, CMOS-compatible logic inputs, 44V breakdown rating, and verified 30V peak-to-peak blocking capability under switch-off conditions.
Technical Context
The DG308ADY+ implements monolithic low-power CMOS architecture with four independent SPST switches, each featuring matched channel characteristics and substrate-isolated construction via V+ connection to the silicon substrate. Its logic-controlled operation uses TTL/CMOS-compatible inputs (IN1–IN4), with no internal pull-ups or level-shifting circuitry.
Switching performance is defined by charge injection (<10pC), off-isolation (78dB at 500kHz), and capacitive parameters: CD(OFF) = 8pF, CS(OFF) = 11pF, and CD(ON)+CS(ON) = 27pF. These values are measured at 140kHz with specified bias conditions and directly impact settling time and crosstalk in sample-and-hold or multiplexed data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (rDS(ON)) | 60Ω typical - ensures minimal signal attenuation and gain error in precision amplifier or PGA front-end paths |
| Turn-on time (tON) | 130ns max - enables sampling rates up to ~3.8MHz in high-speed data acquisition |
| Turn-off time (tOFF) | 90ns max - supports clean channel isolation during multiplexer sequencing |
| Analog signal range | ±15V - compatible with industrial sensor outputs and op-amp rails without external level shifting |
| Supply voltage range | ±5V to ±20V dual or +5V to +30V single - allows flexible power architecture in mixed-signal PCBs |
| Breakdown voltage | 44V - provides 30V peak-to-peak blocking margin for fault-tolerant analog signal paths |
| Charge injection | 10pC max - limits voltage glitch amplitude in sample-and-hold circuits with 0.01µF hold capacitors |
Pinout & Package
Package: 16-pin narrow SO (Small Outline) - RoHS-compliant, surface-mountable, 7.5mm × 10.3mm body size, 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 1, 8, 9, 16) | Logic control input | CMOS/TTL-compatible digital enable lines; high = channel ON for DG308ADY+ |
| S1–S4 (Pins 3, 6, 11, 14) | Source terminal | Analog input node; bidirectional but referenced to V− in dual-supply operation |
| D1–D4 (Pins 2, 7, 10, 15) | Drain terminal | Analog output node; matches Sx impedance and voltage range when channel is closed |
| V+ (Pin 13) | Positive supply / substrate tie | Connects to most positive rail and silicon substrate; critical for latch-up immunity |
| V− (Pin 4) | Negative supply | Required for dual-supply operation; sets lower analog rail and reference for leakage specs |
| GND (Pin 5) | Ground reference | Signal return for logic inputs and substrate bias in single-supply configurations |
| N.C. (Pin 12) | No connect | Not internally bonded - must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| 60Ω rDS(ON) at ±15V | Minimizes gain error and THD in audio and instrumentation amplifier signal chains |
| CMOS logic compatibility | Eliminates need for level translators when interfacing with microcontrollers or FPGAs |
| Monolithic low-power CMOS design | Reduces quiescent current to <100nA over temperature - suitable for battery-backed systems |
| 44V breakdown rating | Enables safe operation with 30Vpp signals even under transient overvoltage conditions |
| 16-pin narrow SO package | Supports automated SMT assembly and achieves 30% board area reduction vs. DIP variants |
Applications
| Test Equipment Signal Routing | Military Radio Front-End Switching |
|---|---|
|
Use Scenario: Automated test systems route multiple sensor inputs to shared ADC channels using timed switching sequences. IC Role / Device Role / Timing Role: DG308ADY+ acts as a precision analog multiplexer with sub-130ns channel enable timing. Use Value: 60Ω rDS(ON) and <10pC charge injection preserve measurement accuracy across 16-bit dynamic range. |
Use Scenario: RF receiver modules require fast, low-leakage switching between antenna paths and calibration loops. IC Role / Device Role / Timing Role: DG308ADY+ serves as a high-isolation analog gate with 78dB off-isolation at 500kHz. Use Value: 44V breakdown and -40°C to +85°C rating ensure reliable operation in harsh environmental deployments. |
| Guidance System Sensor Interface | Heads-Up Display Video Path Control |
|
Use Scenario: Inertial measurement units condition analog outputs from accelerometers and gyros before digitization. IC Role / Device Role / Timing Role: DG308ADY+ isolates sensor channels during self-test or redundancy switching. Use Value: ±15V analog range and <100pA leakage at TMAX maintain signal integrity in wide-temperature avionics. |
Use Scenario: HUD video processors select between primary display sources and diagnostic test patterns. IC Role / Device Role / Timing Role: DG308ADY+ functions as a video signal gate with minimal capacitance-induced edge distortion. Use Value: 8pF CD(OFF) and 27pF total on-capacitance prevent high-frequency video bandwidth loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG408BRUZ | 8-channel, 3.5Ω rDS(ON), +3V to +16.5V supply only - no negative rail support | Requires level-shifting for bipolar analog signals; unsuitable for ±15V systems without redesign | Select when ultra-low on-resistance and higher channel count outweigh dual-supply flexibility |
| TS5A23157DCUR | Single-pole double-throw (SPDT), 0.9Ω rDS(ON), 1.65V to 5.5V supply - no high-voltage capability | Limited to low-voltage portable electronics; cannot replace DG308ADY+ in 30Vpp or military-grade designs | Choose only for cost-sensitive consumer applications with strict low-voltage constraints |
Compared with ADG408BRUZ and TS5A23157DCUR, the DG308ADY+ uniquely supports true bipolar operation up to ±20V while maintaining 60Ω on-resistance and 44V breakdown - making it irreplaceable in legacy industrial and defense systems requiring robust analog signal integrity.
Availability
DG308ADY+ is available at Aetrix Electronics and suitable for test equipment, military radio subsystems, guidance and control systems, and heads-up displays requiring stable component supply across extended temperature ranges.
Supply support for DG308ADY+ 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 defense markets.
The DG308ADY+ belongs to Maxim's legacy analog switch product line, engineered specifically for high-reliability signal routing in environments demanding wide supply range, high breakdown voltage, and guaranteed operation from -40°C to +85°C.
FAQ
What is the maximum analog signal voltage range supported by DG308ADY+?
The DG308ADY+ supports an analog signal range of ±15V when operated with ±15V supplies. Under any supply condition, the analog input voltage must remain within the bounds of V− and V+, as exceeding these limits risks permanent damage. For example, with +30V and GND supplies, the valid analog range is 0V to +30V. This constraint is explicitly defined in the Absolute Maximum Ratings table and applies to all four channels of the DG308ADY+.
Does DG308ADY+ require external pull-up resistors on its logic inputs?
No, DG308ADY+ does not require external pull-up resistors. Its IN1–IN4 inputs are CMOS-compatible with guaranteed logic thresholds: VIN(H) ≥ 2.4V and VIN(L) ≤ 0.8V for +5V supply operation. Input leakage is limited to ±1µA across temperature, allowing direct connection to microcontroller GPIOs or FPGA outputs without additional biasing components - a feature confirmed in the Electrical Characteristics table for IINH and IINL parameters of the DG308ADY+.
Can DG308ADY+ be used with a single +12V supply?
Yes, DG308ADY+ supports single-supply operation from +5V to +30V. When using +12V and GND, the analog signal range becomes 0V to +12V, and the logic inputs remain compatible with standard 3.3V or 5V CMOS levels. However, note that rDS(ON) increases and switching speed degrades slightly compared to ±15V operation - data from the Typical Operating Characteristics curves confirm this trade-off for the DG308ADY+ under single-supply bias.
What is the thermal performance of DG308ADY+ in narrow SO package?
The DG308ADY+ in 16-pin narrow SO package has a thermal resistance θJA of 115°C/W and a continuous power dissipation limit of 696mW at +70°C ambient, derating by 8.70mW/°C above that temperature. This allows full-spec operation up to +85°C case temperature when PCB copper area and airflow meet JEDEC standards - verified in the Absolute Maximum Ratings section for the DG308ADY+.
Is Pin 12 (N.C.) safe to connect to ground or leave floating?
Pin 12 is designated N.C. (No Connect) and is not internally bonded. The datasheet explicitly states it must remain unconnected - neither grounded nor tied to any voltage. Connecting Pin 12 may cause unpredictable behavior or increased leakage due to parasitic coupling. This requirement is consistent across all DG308A/DG309 variants including the DG308ADY+, and appears in the Pin Description table.
DG308ADY+ 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):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 5V ~ 30V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 250ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- -10pC
- Channel Capacitance (CS(off), CD(off)):
- 11pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 5nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG308ADY+ FAQ
1.How can I place an order for DG308ADY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG308ADY+ 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 DG308ADY+ reliable?
The price and inventory of DG308ADY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG308ADY+ is usually 5 days.
3.What payment methods are accepted for DG308ADY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG308ADY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG308ADY+?
DG308ADY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG308ADY+ 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 DG308ADY+?
For technical support, including DG308ADY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG308ADY+ requirements.
6.How does Aetrix verify that DG308ADY+ is sourced from the original manufacturer or authorized distributors?
All DG308ADY+ 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 DG308ADY+ meets industry standards.
7.What is the process for return or replacement of DG308ADY+?
All DG308ADY+ units undergo pre-shipment inspection (PSI). If there is an issue with DG308ADY+, 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 DG308ADY+ part is unused and in its original packaging.
Return procedure for DG308ADY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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