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DG445ETE+
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Product Detailed Parameters
- Description：IC SWITCH SPST-NOX4 85OHM 16TQFN
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Switch Circuit：SPST - NO
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：85Ohm
- Channel-to-Channel Matching (ΔRon)：4Ohm (Max)
- Voltage - Supply, Single (V+)：10V ~ 30V
- Voltage - Supply, Dual (V±)：±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max)：250ns, 170ns
- -3db Bandwidth：-
- Charge Injection：5pC
- Channel Capacitance (CS(off), CD(off))：4pF, 4pF
- Current - Leakage (IS(off)) (Max)：500pA
- Crosstalk：-100dB @ 1MHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-WQFN Exposed Pad
- Supplier Device Package：16-TQFN (5x5)
- Number of Circuits：4
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Overview
The DG445ETE+ is a quad, single-pole/single-throw (SPST) analog switch from the Maxim Integrated DG444/DG445 family. It features four normally open switches fabricated with a 44V silicon-gate process. The device operates on a single +10V to +30V supply or bipolar ±4.5V to ±20V supplies. Key electrical parameters include a maximum drain-source on-resistance of 85Ω, an on-resistance match between channels of 4Ω max, and guaranteed on-resistance flatness of 9Ω max over the signal range. Turn-on time is less than 250ns and turn-off time is less than 70ns. It offers low charge injection of 10pC max and off-leakage current below 5nA at +85°C. The component is housed in a 16-pin Thin QFN package and supports an operating temperature range of -40°C to +85°C.
Feature Summary
- Improved on-resistance matching between channels for enhanced signal integrity
- Guaranteed on-resistance flatness across the entire analog signal range
- Low power consumption suitable for battery-operated systems
- High electrostatic discharge tolerance per Method 3015.7
Applications
- Sample-and-hold circuits
- Test equipment
- Heads-up displays
- Guidance and control systems
- Audio signal routing
Procurement Notes
Verify the specific ordering suffix ETE corresponds to the 16-pin Thin QFN package and the industrial temperature range (-40°C to +85°C). Confirm that the component meets RoHS compliance requirements if applicable to your manufacturing standards. Ensure that the logic supply voltage VL is correctly configured for TTL or CMOS compatibility during integration.
Selection Notes
Select the DG445ETE+ when four normally open analog switches are required within a compact surface-mount footprint. This part is appropriate for designs needing rail-to-rail signal handling and low charge injection. Consider the bipolar supply capability if negative voltage rails are available in the system architecture.
Part Context
This component belongs to the redesigned DG444/DG445 series which improves upon industry-standard predecessors. The DG445 variant specifically provides four normally open switches, contrasting with the DG444's four normally closed configuration. Both share identical pinouts and core performance characteristics, allowing for direct functional substitution based on switch state requirements.
Replacement Considerations
The DG445ETE+ serves as a plug-in upgrade for legacy DG444/DG445 devices. Verify that replacement parts maintain the same 16-pin Thin QFN form factor and thermal pad connectivity. Ensure the substitute component supports the required 44V silicon-gate process specifications for overvoltage protection.
