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Vishay Siliconix DG2037DS-T1-E3
- Part No.:
- DG2037DS-T1-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- SOT-23-8
- Datasheet:
-
DG2037DS-T1-E3.pdf
- Description:
- IC SWITCH SPST-NOX2 5OHM SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,955
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Product details
Overview
DG2037DS-T1-E3 from Vishay Siliconix is a dual single-pole/single-throw (SPST) monolithic CMOS analog switch optimized for low-voltage, high-accuracy signal routing in portable systems. It operates from 1.8 V to 5.5 V, delivers 3.0 Ω on-resistance at 2.7 V, switches in 12 ns, and injects only 10 pC charge - enabling precision sample-and-hold and battery-powered RF/data-path switching.
For engineers reviewing the DG2037DS-T1-E3 datasheet, DG2037DS-T1-E3 pinout, DG2037DS-T1-E3 application, or DG2037DS-T1-E3 equivalent, key selection criteria include its SOT23-8 package footprint, TTL/CMOS-compatible control logic, guaranteed rON flatness ≤0.5 Ω, and −61 dB off-isolation at 1 MHz - all validated across −40 °C to +85 °C.
Technical Context
The DG2037DS-T1-E3 implements two independent SPST switches with symmetrical bidirectional conduction when on and rail-to-rail blocking when off. Its epitaxial substrate prevents latchup, and internal diode clamping protects NO/COM/IN terminals against signals exceeding V+ by up to 0.3 V.
Control logic is active-high: INx = high enables corresponding switch; INx = low disables it. Switching performance is specified at V+ = 3.0 V and 5.0 V, with rON decreasing to 2.5 Ω typ. at 4.5 V and tON/tOFF tightening to 19 ns/12 ns respectively - confirming voltage-scalable timing behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct interface with 1.8 V, 2.7 V, 3.3 V, and 5 V logic and analog rails without level shifters. |
| On-Resistance (rON) | 3.0 Ω max at V+ = 2.7 V, VCOM = 1.5 V - ensures minimal signal attenuation and distortion in audio, sensor, and data acquisition paths. |
| Turn-On/Off Time | 12 ns typical - enables reliable switching within high-speed serial data sampling windows and multiplexed ADC front-ends. |
| Charge Injection (QINJ) | 10 pC max - limits voltage glitch on sampled nodes, critical for sub-12-bit accuracy in precision hold circuits. |
| Off-Isolation (OIRR) | −61 dB at 1 MHz - suppresses crosstalk between adjacent channels in multi-signal routing applications like cellular transceiver IF switching. |
| Input Logic Compatibility | TTL/CMOS - accepts standard 3.3 V or 5 V microcontroller GPIO outputs without external pull-ups or translators. |
| Leakage Current | ±10 nA max at V+ = 3.3 V - preserves battery life and signal integrity in high-impedance sensor interfaces and sleep-mode circuits. |
Pinout & Package
SOT23-8 package: 3.0 mm × 1.7 mm × 1.3 mm body, gull-wing leads, moisture sensitivity level 1 (MSL1), RoHS-compliant, lead (Pb)-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Digital control input for Switch 1 | Active-high logic input; drives internal gate of first SPST switch; compatible with 1.8 V–5.5 V logic thresholds. |
| 2 (NO1) | Normally open terminal of Switch 1 | Open-circuit when IN1 = low; connects to COM1 when IN1 = high; rated for ±50 mA continuous analog current. |
| 3 (COM1) | Common analog terminal of Switch 1 | Bidirectional signal path; handles full analog range from GND to V+; clamped by internal diodes if exceeded. |
| 4 (NO2) | Normally open terminal of Switch 2 | Independent second SPST path; electrically isolated from Switch 1; shares same V+ and GND references. |
| 5 (IN2) | Digital control input for Switch 2 | Independent active-high control; no inter-switch dependency; enables asynchronous channel enable/disable sequencing. |
| 6 (COM2) | Common analog terminal of Switch 2 | Second bidirectional node; supports separate analog domains or differential pair routing with matched rON flatness ≤0.5 Ω. |
| 7 (GND) | Analog and digital ground reference | Single shared ground pin; requires low-impedance PCB connection to minimize noise coupling between digital control and analog paths. |
| 8 (V+) | Positive supply rail | Powers both analog switch core and digital interface; must be decoupled with ≥0.1 µF ceramic capacitor near pin 8. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 1.8 V | Enables direct integration with ultra-low-power MCUs and sensors in wearables and IoT edge nodes without voltage boosting. |
| rON flatness ≤0.5 Ω | Maintains consistent gain and linearity across full analog signal swing (0 V to V+), essential for audio line-level switching and precision instrumentation. |
| rON matching ≤0.3 Ω between channels | Ensures balanced signal routing in differential or dual-channel applications such as stereo audio or dual ADC inputs. |
| 17 pF source-off capacitance (CNO(off)) | Minimizes capacitive loading on driving sources during switch-off, preserving bandwidth in high-frequency signal chains. |
| Epitaxial latchup immunity | Guarantees robust operation under transient overvoltage or ESD events without destructive latchup - critical for handheld device reliability. |
Applications
| Cellular Phone Front-End | Portable Oscilloscope Input Multiplexer |
|---|---|
Use Scenario: Routing RF receive paths between multiple antennas and transceiver ICs in LTE/5G handsets. IC Role / Device Role / Timing Role: Dual SPST analog switch providing low-loss, fast isolation between antenna diversity branches. Use Value: 3.0 Ω rON minimizes insertion loss (<0.15 dB at 2.4 GHz), while 12 ns switching enables dynamic reconfiguration during TDD frame boundaries. | Use Scenario: Selecting between probe attenuation settings (1×, 10×) and input coupling (AC/DC) in handheld digital scopes. IC Role / Device Role / Timing Role: Precision analog signal path selector with minimal charge injection and flat rON across voltage range. Use Value: 10 pC QINJ prevents vertical offset jumps during range changes; −61 dB OIRR isolates channels to avoid ghosting artifacts. |
| Battery-Powered Sensor Hub | Medical ECG Signal Conditioning |
Use Scenario: Multiplexing outputs from temperature, humidity, and accelerometer sensors into a shared ADC input. IC Role / Device Role / Timing Role: Low-leakage, low-power analog switch enabling sequential sensor readout with minimal standby current. Use Value: ±10 nA off-leakage preserves sensor bias stability; 0.02 µA supply current extends battery life in always-on monitoring modes. | Use Scenario: Isolating patient-connected electrode inputs during calibration or lead-off detection in portable ECG monitors. IC Role / Device Role / Timing Role: Medical-grade analog switch with rail-to-rail blocking and verified latchup immunity per IEC 61000-4-2. Use Value: Epitaxial construction prevents latchup during defibrillation pulse transients; 1.8 V operation allows direct interface with low-voltage medical SoCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617EUT+T | Higher rON (6 Ω typ. at 3 V), slower tON (25 ns), but offers fault protection and higher V+ rating (up to 12 V). | Preferred in industrial systems requiring overvoltage tolerance; unsuitable for <2.5 V battery operation due to 2.7 V min V+. | Select MAX4617EUT+T only when fault protection or >5.5 V operation is required; DG2037DS-T1-E3 remains optimal for 1.8–5.5 V portable designs. |
| ADG721BRMZ-REEL | Identical 8-pin MSOP package and 3 Ω rON, but uses active-low logic (IN = low enables switch) and lacks latchup immunity documentation. | Requires inverted control logic; not recommended for high-reliability medical or automotive use where latchup immunity is mandated. | Choose ADG721BRMZ-REEL only for cost-sensitive consumer applications with existing active-low control architecture; DG2037DS-T1-E3 provides superior reliability and logic flexibility. |
Compared with MAX4617EUT+T and ADG721BRMZ-REEL, the DG2037DS-T1-E3 uniquely combines 1.8 V operation, 12 ns switching, documented epitaxial latchup immunity, and SOT23-8 footprint - making it the only option qualified for space-constrained, ultra-low-voltage, high-reliability portable signal routing.
Availability
DG2037DS-T1-E3 is available at Aetrix Electronics and suitable for cellular phone RF front-ends, portable test equipment multiplexers, and battery-operated sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG2037DS-T1-E3 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
Vishay Siliconix is a global leader in discrete semiconductors and passive components, specializing in high-reliability power MOSFETs, analog switches, and precision resistors for demanding industrial and portable applications.
The DG2037DS-T1-E3 belongs to Vishay's low-voltage analog switch product line, engineered specifically for high-accuracy, low-power signal routing in space-constrained battery-powered devices - emphasizing rON consistency, charge injection control, and latchup-free operation.
FAQ
What is the maximum analog signal voltage range supported by the DG2037DS-T1-E3?
The DG2037DS-T1-E3 supports analog signals from GND to V+, with absolute maximum ratings allowing VNO/VNC/VCOM to reach (V+ + 0.3) V due to internal diode clamping. For safe operation, keep analog voltages within 0 V to V+ - e.g., 0–3.3 V when V+ = 3.3 V. Exceeding this range risks forward-biasing clamp diodes and violating the ±50 mA current limit.
Does the DG2037DS-T1-E3 require external pull-up or pull-down resistors on its IN1 and IN2 pins?
No, the DG2037DS-T1-E3 does not require external pull-up or pull-down resistors on IN1 or IN2. Its TTL/CMOS-compatible inputs have guaranteed logic thresholds (VINH ≥ 1.5 V at V+ = 3 V; ≥2.4 V at V+ = 5 V) and leakage <±1 µA, allowing direct connection to microcontroller GPIOs. However, floating inputs must be avoided - tie unused control lines to GND or V+ to prevent undefined switch states.
Can the DG2037DS-T1-E3 be used in bidirectional analog signal paths?
Yes, the DG2037DS-T1-E3 supports fully bidirectional analog signal flow through each SPST switch. When enabled, COM1–NO1 and COM2–NO2 conduct equally well in either direction, with identical rON, flatness, and leakage specifications regardless of signal polarity. This makes it suitable for audio line switching, differential data routing, and sensor excitation/reception paths.
What is the thermal derating behavior of the DG2037DS-T1-E3 above 25 °C?
The DG2037DS-T1-E3 has a thermal derating factor of 6.5 mW/°C above 25 °C ambient. Its SOT23-8 package is rated for 515 mW at 25 °C, so maximum allowable power dissipation drops linearly - e.g., to 450 mW at 35 °C. To maintain reliability, ensure PCB copper area and airflow keep junction temperature below 150 °C, especially under sustained 50 mA load conditions.
How does the DG2037DS-T1-E3 handle overvoltage transients on analog pins?
The DG2037DS-T1-E3 incorporates internal diode clamping from NO/NC/COM pins to V+ and GND. Signals exceeding V+ by >0.3 V forward-bias the V+-clamp diode; signals below GND by >0.3 V forward-bias the GND-clamp diode. To prevent damage, limit forward current to ≤50 mA per diode using external series resistors - e.g., a 100 Ω resistor limits transient current to <10 mA for a 1 V overshoot.
DG2037DS-T1-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 5Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm (Max)
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 30ns, 22ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 15pF, 17pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -67dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
DG2037DS-T1-E3 FAQ
1.How can I place an order for DG2037DS-T1-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG2037DS-T1-E3 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 DG2037DS-T1-E3 reliable?
The price and inventory of DG2037DS-T1-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG2037DS-T1-E3 is usually 5 days.
3.What payment methods are accepted for DG2037DS-T1-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG2037DS-T1-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG2037DS-T1-E3?
DG2037DS-T1-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG2037DS-T1-E3 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 DG2037DS-T1-E3?
For technical support, including DG2037DS-T1-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG2037DS-T1-E3 requirements.
6.How does Aetrix verify that DG2037DS-T1-E3 is sourced from the original manufacturer or authorized distributors?
All DG2037DS-T1-E3 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 DG2037DS-T1-E3 meets industry standards.
7.What is the process for return or replacement of DG2037DS-T1-E3?
All DG2037DS-T1-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG2037DS-T1-E3, 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 DG2037DS-T1-E3 part is unused and in its original packaging.
Return procedure for DG2037DS-T1-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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