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DG303ABWE Equivalent & Substitute Parts
Part Overview
The DG303ABWE is a dual SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This 16-SOIC surface mount component provides two independent 2:1 multiplexer/demultiplexer circuits with 50Ohm on-state resistance, designed for signal routing and switching applications in analog systems.
The DG303ABWE carries an Obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this interface component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Configuration | SPDT (Single Pole Double Throw) |
| Multiplexer/Demultiplexer Circuit | 2:1 |
| Number of Circuits | 2 |
| On-State Resistance (Max) | 50Ohm |
| Voltage Supply Range (Dual) | ±5V ~ 18V |
| Switch Time (Ton/Toff Max) | 300ns / 250ns |
| Charge Injection | 12pC |
| Channel Capacitance (CS(off)/CD(off)) | 14pF / 14pF |
| Current Leakage (IS(off) Max) | 5nA |
| Crosstalk | -74dB @ 500kHz |
| Operating Temperature Range | -25°C ~ 85°C (TA) |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the DG303ABWE is determined by strict equivalence across the following critical parameters:
- Switch circuit configuration (SPDT)
- Multiplexer/demultiplexer circuit topology (2:1)
- Number of independent circuits (2)
- On-state resistance specification (50Ohm maximum)
- Dual supply voltage range (±5V ~ 18V)
- Switch timing characteristics (Ton/Toff)
- Charge injection and capacitance specifications
- Leakage current and crosstalk performance
- Package type and pin compatibility (16-SOIC)
- Operating temperature range (-25°C ~ 85°C)
Only parts meeting all these parameters without deviation are classified as direct substitutes. The DG303ABWE+ is identified as a direct substitute based on identical electrical and mechanical specifications.
Parameter Comparison
| Parameter | DG303ABWE (Main Part) | DG303ABWE+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Switch Circuit | SPDT | SPDT |
| Multiplexer/Demultiplexer Circuit | 2:1 | 2:1 |
| Number of Circuits | 2 | 2 |
| On-State Resistance (Max) | 50Ohm | 50Ohm |
| Voltage Supply (Dual) | ±5V ~ 18V | ±5V ~ 18V |
| Switch Time (Ton/Toff Max) | 300ns / 250ns | 300ns / 250ns |
| Charge Injection | 12pC | 12pC |
| Channel Capacitance (CS(off)/CD(off)) | 14pF / 14pF | 14pF / 14pF |
| Current Leakage (IS(off) Max) | 5nA | 5nA |
| Crosstalk | -74dB @ 500kHz | -74dB @ 500kHz |
| Operating Temperature | -25°C ~ 85°C (TA) | -25°C ~ 85°C (TA) |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The DG303ABWE+ is the direct substitute for the obsolete DG303ABWE. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical and mechanical specifications across all critical parameters.
The primary distinction between these parts is product status and regulatory compliance. The DG303ABWE+ carries Active product status, ensuring ongoing manufacturer support and availability. The DG303ABWE+ also meets ROHS3 compliance requirements, whereas the original DG303ABWE is RoHS non-compliant.
For new designs or production transitions, the DG303ABWE+ is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, the DG303ABWE remains functionally equivalent if inventory is available.
Frequently Asked Questions (FAQ)
Q: Can the DG303ABWE+ be used as a direct replacement for the DG303ABWE in existing designs?
A: Yes. The DG303ABWE+ is electrically and mechanically identical to the DG303ABWE. Pin configuration, package dimensions (16-SOIC), and all electrical parameters are equivalent. No circuit modifications are required.
Q: What is the primary reason to transition from DG303ABWE to DG303ABWE+?
A: The DG303ABWE is classified as Obsolete, creating supply chain risk. The DG303ABWE+ is Active status, ensuring continued availability and manufacturer support. Additionally, the DG303ABWE+ meets ROHS3 compliance standards.
Q: Are there any differences in switching performance between these parts?
A: No. Both parts specify identical switch timing (Ton/Toff: 300ns/250ns), charge injection (12pC), capacitance (14pF), leakage current (5nA), and crosstalk (-74dB @ 500kHz).
Q: Is the 16-SOIC package identical between both parts?
A: Yes. Both parts use the same 16-SOIC package with 0.295" (7.50mm) width. PCB footprints and assembly processes are identical.
Q: What supply voltage range do these parts support?
A: Both parts operate with dual supply voltages ranging from ±5V to ±18V, providing flexibility for various analog system designs.
Q: Are there any temperature range differences?
A: No. Both parts operate across the identical temperature range of -25°C to 85°C (TA).
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