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Analog Devices Inc./Maxim Integrated DG308ADY+T
- Part No.:
- DG308ADY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG308ADY+T.pdf
- Description:
- IC SW SPST-NOX4 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,856
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Product details
Overview
DG308ADY+T 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 with 44V breakdown voltage. Used in test equipment and communications systems where low leakage and fast switching are critical.
For engineers reviewing the DG308ADY+T datasheet, DG308ADY+T pinout, DG308ADY+T application, or DG308ADY+T equivalent, this page provides verified electrical parameters, package mapping to 16-pin narrow SOIC, truth table behavior, supply flexibility (±5V to ±20V or +5V to +30V), and real-world design constraints including charge injection (–10pC) and off-isolation (78dB).
Technical Context
The DG308ADY+T implements monolithic CMOS switch architecture with substrate-connected V+ pin, enabling robust analog signal handling across rail-to-rail input ranges up to ±15V. Its logic-compatible inputs accept TTL/CMOS levels regardless of supply polarity, and internal charge-balanced design minimizes transients during switching.
It supports both split-supply (e.g., ±15V) and single-positive-supply (e.g., +30V/GND) operation without external level-shifting. Channel isolation is maintained via controlled channel capacitance (CD(OFF) = 8pF, CS(OFF) = 11pF) and low off-leakage (±100nA at TMAX), ensuring integrity in sample-and-hold and multiplexed sensor interfaces.
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-ends |
| Turn-on time (tON) | 130ns max - enables sub-microsecond channel selection in high-speed data acquisition |
| Analog signal range | ±15V - supports full-range operation with ±15V op-amp rails without clipping |
| Breakdown voltage (V+ to V−) | 44V - allows safe blocking of 30V peak-to-peak signals under worst-case off-state conditions |
| Charge injection | –10pC - limits voltage step error in sample-and-hold circuits with 0.01µF hold capacitors |
| Off-isolation (OIRR) | 78dB - suppresses crosstalk between active and inactive channels at 500kHz in RF/mixed-signal routing |
| Supply range | +5V to +30V (single) or ±5V to ±20V (split) - eliminates need for dual supplies in portable or industrial systems |
Pinout & Package
Package: 16-pin narrow SOIC (SO), body width 3.9mm, JEDEC MS-012AC, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 1, 8, 9, 16) | Logic control inputs | CMOS/TTL-compatible; drive internal gate to select NO state per channel |
| S1–S4 (Pins 3, 6, 11, 14) | Source inputs | Analog input nodes; referenced to V− in split-supply mode; must stay within V− to V+ range |
| D1–D4 (Pins 2, 7, 10, 15) | Drain outputs | Switched analog outputs; exhibit rDS(ON) and CD(ON)+CS(ON) = 27pF when closed |
| V+ (Pin 13) | Positive supply / substrate connection | Must be ≥ V−; ties substrate to highest potential to prevent latch-up |
| V− (Pin 4) | Negative supply | Required for split-supply operation; sets lower bound of analog range |
| GND (Pin 5) | Ground reference | System ground return for logic and supply currents; not internally tied to substrate |
| N.C. (Pin 12) | No connect | Not bonded; must remain unconnected to avoid parasitic coupling or ESD path disruption |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic CMOS construction | Enables low power consumption (<100µA supply current) and high reliability without hybrid assembly |
| Single/bipolar supply compatibility | Eliminates need for external level shifters when interfacing with microcontrollers operating on +3.3V or +5V logic |
| Low on-resistance flatness | rDS(ON) varies <±5Ω over ±10V analog range - preserves linearity in audio and instrumentation signal paths |
| CMOS logic-compatible inputs | Accepts 0.8V/2.0V thresholds across full temperature range - ensures robust control even with marginal drive strength |
| 44V breakdown rating | Supports 30Vpp signal blocking with 4.5V safety margin - meets MIL-STD-883 Class B transient immunity requirements |
Applications
| Test Equipment Signal Routing | Communications System Multiplexing |
|---|---|
Use Scenario: Automated test equipment routes multiple sensor inputs to a shared ADC using timed channel selection. IC Role / Device Role / Timing Role: DG308ADY+T acts as a precision analog multiplexer with sub-150ns channel settling, minimizing measurement dead time. Use Value: 60Ω rDS(ON) and 78dB off-isolation reduce inter-channel crosstalk and gain error, improving multi-channel accuracy to <0.1%. |
Use Scenario: PBX/PABX systems route voice-band signals between line cards and DSP resources. IC Role / Device Role / Timing Role: DG308ADY+T serves as a low-distortion analog switch in 300–3400Hz voice path, controlled by FPGA GPIO. Use Value: ±15V analog range and <10pC charge injection prevent audible clicks and DC offset drift during call setup/hangup. |
| Sample-and-Hold Front-End | Military Radio Signal Conditioning |
Use Scenario: High-resolution data acquisition system samples analog sensor outputs into a 0.01µF hold capacitor before digitization. IC Role / Device Role / Timing Role: DG308ADY+T isolates the sampling node during hold phase, acting as a low-leakage gate. Use Value: ±100nA off-leakage at +85°C extends hold time beyond 10ms with <1LSB error in 16-bit systems. |
Use Scenario: Tactical radio front-end switches between antenna inputs and receiver chains under environmental stress (-40°C to +85°C). IC Role / Device Role / Timing Role: DG308ADY+T provides ruggedized analog path selection with guaranteed operation across military temperature range. Use Value: 44V breakdown and –40°C to +85°C rating ensure uninterrupted signal routing during thermal cycling and voltage transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG408BRUZ | 8-channel, 35Ω rDS(ON), 16-TSSOP; requires separate VDD/VSS pins (no substrate tie) | Higher channel count but lacks V+ substrate connection - unsuitable for high-voltage latch-up immunity designs | Select ADG408BRUZ only if 8-channel density outweighs need for 44V breakdown and substrate-controlled robustness |
| TS5A23157DCUR | 2-channel, 0.9Ω rDS(ON), 10-pin VSSOP; single-supply only (+1.65V to +5.5V); no negative rail support | Optimized for low-voltage portable gear; cannot replace DG308ADY+T in ±15V or >5.5V systems | Choose TS5A23157DCUR only for battery-powered 3.3V signal routing where ultra-low on-resistance is primary requirement |
Compared with ADG408BRUZ and TS5A23157DCUR, the DG308ADY+T uniquely combines 44V breakdown, substrate-connected V+, and true bipolar supply operation - making it irreplaceable in high-reliability industrial and military analog routing where voltage margin and latch-up immunity are non-negotiable.
Availability
DG308ADY+T is available at Aetrix Electronics and suitable for test equipment, communications systems, and military radio applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG308ADY+T 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The DG308ADY+T belongs to Maxim's legacy analog switch product line, engineered for high-voltage signal integrity and robust operation in mission-critical systems where reliability under electrical stress is paramount.
FAQ
What is the maximum analog signal voltage range supported by DG308ADY+T?
The DG308ADY+T supports an analog signal range of ±15V when operated with ±15V supplies. Under single-supply conditions (e.g., +30V/GND), the analog input must remain between GND and +30V. Exceeding these bounds risks permanent damage, as specified in the Absolute Maximum Ratings table where V+ to V− must not exceed +44V and analog signals must stay within the supply rails.
Does DG308ADY+T require external pull-up or pull-down resistors on its logic inputs?
No, DG308ADY+T does not require external pull-up or pull-down resistors. Its CMOS logic inputs have guaranteed thresholds (0.8V low, 2.0V high) and leakage <±1µA at +25°C, allowing direct connection to microcontroller GPIO or FPGA outputs. Internal input structure ensures stable state retention without external biasing under normal operating conditions.
Can DG308ADY+T operate with a +12V single supply instead of split supplies?
Yes, DG308ADY+T can operate with a +12V single supply (V+ = +12V, V− = GND). In this configuration, analog signals must remain between 0V and +12V, and logic inputs remain compatible with standard 3.3V or 5V CMOS levels. Performance trade-offs include slightly higher rDS(ON) (~75Ω typical) and reduced switching speed versus ±15V operation, as confirmed in the Typical Operating Characteristics graphs.
What is the thermal performance of DG308ADY+T in narrow SOIC package at +85°C ambient?
In its 16-pin narrow SOIC package, DG308ADY+T has a thermal resistance θJA of 115°C/W. At +85°C ambient and 696mW maximum power dissipation (derated from 842mW at +70°C), junction temperature remains within safe limits (<+150°C) assuming standard PCB copper area. Measured supply current stays below 100µA across the full –40°C to +85°C range, minimizing self-heating.
How does the N.C. pin (Pin 12) affect PCB layout for DG308ADY+T?
Pin 12 of DG308ADY+T is a true no-connect terminal - not internally bonded or tied to any circuit node. It must remain unconnected on the PCB to avoid introducing parasitic capacitance or unintended ESD discharge paths. Leaving it floating is safe; however, routing traces or vias to this pad is discouraged, as it may degrade high-frequency off-isolation or increase susceptibility to board-level noise coupling.
DG308ADY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for DG308ADY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG308ADY+T 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+T reliable?
The price and inventory of DG308ADY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG308ADY+T is usually 5 days.
3.What payment methods are accepted for DG308ADY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG308ADY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG308ADY+T?
DG308ADY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG308ADY+T 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+T?
For technical support, including DG308ADY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG308ADY+T requirements.
6.How does Aetrix verify that DG308ADY+T is sourced from the original manufacturer or authorized distributors?
All DG308ADY+T 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+T meets industry standards.
7.What is the process for return or replacement of DG308ADY+T?
All DG308ADY+T units undergo pre-shipment inspection (PSI). If there is an issue with DG308ADY+T, 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+T part is unused and in its original packaging.
Return procedure for DG308ADY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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