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DG191AP/B
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Product Detailed Parameters
- Description：DG191AP/B
- Series：*
- Mfr：Rochester Electronics, LLC
- Package：Bulk
- Switch Circuit：-
- Multiplexer/Demultiplexer Circuit：-
- On-State Resistance (Max)：-
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：-
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：-
- -3db Bandwidth：-
- Charge Injection：-
- Channel Capacitance (CS(off), CD(off))：-
- Current - Leakage (IS(off)) (Max)：-
- Crosstalk：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Number of Circuits：-
- Grade：-
- Qualification：-
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Overview
The DG191AP/B is a dual single-pole double-throw (SPDT) analog switch manufactured by Rochester Electronics. It operates with a maximum supply voltage of ±15 V and supports signal voltages up to ±12 V. The device features a low on-resistance of 150 Ω and an off-isolation of 60 dB at 1 MHz. It includes a built-in clamp diode for input protection and offers a propagation delay of 300 ns. The component is housed in a 16-pin ceramic DIP package and functions within a temperature range of -55 °C to 125 °C.
Feature Summary
- Dual SPDT configuration providing two independent switching channels
- Built-in clamp diodes for enhanced input signal protection
- Low on-resistance for efficient signal transmission
- High off-isolation to minimize signal leakage
Applications
- Data acquisition systems requiring analog signal routing
- Communication equipment utilizing multiplexing
- Industrial control circuits for signal switching
Procurement Notes
Verify the specific manufacturer origin, as Rochester Electronics sources components from original manufacturers. Confirm the package type matches the required application, as variations exist between plastic and ceramic DIP packages. Ensure the lead finish and RoHS compliance status align with project specifications before procurement.
Selection Notes
Select this component when dual SPDT switching is required with high reliability. Consider the 150 Ω on-resistance for signal integrity requirements. Verify that the ±15 V supply capability meets system voltage needs. Check the operating temperature range against environmental conditions.
Part Context
Rochester Electronics specializes in sourcing and distributing obsolete and hard-to-find electronic components. The DG191AP/B is part of their portfolio of legacy analog switches, originally designed by Fairchild Semiconductor. This component serves as a replacement for discontinued parts in existing designs.
Replacement Considerations
Direct replacements include the DG191A and DG191AH from Vishay or Fairchild. Verify pin compatibility and electrical parameters such as on-resistance and supply voltage limits when substituting.
