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Vishay Siliconix DG9234EDQ-T1-GE3
- Part No.:
- DG9234EDQ-T1-GE3
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DG9234EDQ-T1-GE3.pdf
- Description:
- IC SW SPST-NO/NCX2 25OHM 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,123
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Product details
Overview
DG9234EDQ-T1-GE3 from Vishay Siliconix is a dual SPST analog switch IC with break-before-make timing, designed for precision signal routing in low-voltage instrumentation and medical systems. It features 17 Ω typical on-resistance at 5 V, 1 pC charge injection, 100 pA max leakage at 25 °C, and operates from +2.7 V to +5.5 V single supply - enabling high-fidelity signal switching in ADC front ends and sample-and-hold circuits.
For engineers reviewing the DG9234EDQ-T1-GE3 datasheet, DG9234EDQ-T1-GE3 pinout, DG9234EDQ-T1-GE3 application, or DG9234EDQ-T1-GE3 equivalent, key selection criteria include verified break-before-make timing, sub-100 pA leakage performance across -40 °C to +85 °C, 3.8 pF off-capacitance, ESD tolerance (8 kV HBM), and MSOP-8 package compatibility with space-constrained portable healthcare and test equipment designs.
Technical Context
The DG9234EDQ-T1-GE3 implements two independent CMOS SPST switches with complementary control logic: Switch-1 is normally open (NO), Switch-2 is normally closed (NC), and switching follows strict break-before-make timing to prevent signal shorting during state transitions. Its monolithic construction ensures matched RDS(on) (≤2 Ω mismatch) and flat on-resistance (<6 Ω variation over 0–5 V analog range) for precision gain control and multiplexing.
It supports TTL/CMOS-compatible digital inputs (VIL ≤ 0.8 V, VIH ≥ 2.4 V), operates down to 2.7 V, and maintains 1 nW typical power consumption via ultra-low I+ (<1 μA). Internal diode clamping protects NC/NO/COM pins against overvoltage up to (V+ + 0.3 V), supporting robust operation in noisy industrial signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RDS(on)) | 17 Ω typ. at 5 V - enables <1 LSB error in 12-bit+ data acquisition when driving 1 kΩ loads |
| Charge injection | 1 pC max - minimizes voltage glitch in sample-and-hold and switched-capacitor circuits |
| Leakage current | 100 pA max at 25 °C - preserves accuracy in high-impedance sensor interfaces and medical EEG/ECG front ends |
| Switching time | tON = 32 ns, tOFF = 10 ns at 5 V - supports >10 MSPS multiplexing in automated test equipment |
| Supply range | +2.7 V to +5.5 V - compatible with Li-ion battery-powered portable instruments and 3.3 V/5 V mixed-signal systems |
| ESD tolerance | 8 kV HBM, 1 kV CDM - ensures robust handling and board-level reliability without external protection |
| Off-isolation | -80 dB at 1 MHz - suppresses crosstalk between channels in multi-signal medical monitoring systems |
Pinout & Package
Package: 8-lead MSOP (JEDEC MO-187, variation AA/BA), 3.00 mm × 4.90 mm footprint, 0.65 mm pitch, 1.10 mm max height - optimized for compact PCB layouts in handheld diagnostics and portable meters.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: NC1 | No-connect terminal | Internally unconnected; must be left floating or tied to GND per layout best practice |
| 2: V+ | Positive supply rail | Accepts +2.7 V to +5.5 V; decoupling capacitor (0.1 μF) required within 2 mm |
| 3: COM1 | Common terminal for Switch-1 | Signal path input/output for NO1-controlled channel; bidirectional conduction when enabled |
| 4: IN1 | Digital control input for Switch-1 | Active-high logic: "1" (≥2.4 V) closes Switch-1 (NO1 → COM1); "0" (≤0.8 V) opens |
| 5: IN2 | Digital control input for Switch-2 | Active-high logic: "1" closes Switch-2 (COM2 → NC2); "0" opens - inverse behavior to IN1 enables break-before-make |
| 6: COM2 | Common terminal for Switch-2 | Signal path input/output for NC2-controlled channel; bidirectional conduction when enabled |
| 7: GND | Ground reference | Analog/digital common return; requires low-impedance plane connection adjacent to V+ |
| 8: NC2 | No-connect terminal | Internally unconnected; must be left floating or tied to GND |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make timing | Guaranteed non-overlapping conduction prevents momentary short-circuit between COM1 and COM2 during switching |
| Matched on-resistance | ΔRDS(on) ≤ 2 Ω ensures consistent gain scaling across dual-channel analog front ends |
| Low parasitic capacitance | 3.8 pF off-capacitance and 7.8 pF on-capacitance minimize bandwidth loss and settling time in wideband signal paths |
| Overvoltage-tolerant inputs | NC/NO/COM pins tolerate signals up to (V+ + 0.3 V) via internal clamping diodes - eliminates need for external protection in ±10 V signal ranges |
| Latch-up immunity | Rated >300 mA per JESD78 - withstands transient overcurrent events in industrial control I/O modules |
Applications
| Medical Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Routing biopotential signals (ECG, EEG) from multiple electrodes to a shared ADC channel while maintaining DC accuracy and low noise. IC Role / Device Role / Timing Role: Dual SPST switch with break-before-make timing isolates electrode inputs sequentially, preventing cross-talk and baseline shift during channel scanning. Use Value: 100 pA leakage and 1 pC charge injection preserve microvolt-level signal integrity; 3.8 pF off-capacitance avoids loading high-Z electrode interfaces. | Use Scenario: Multiplexing sensor outputs (thermocouples, strain gauges) into a precision SAR ADC in environmental monitoring hardware. IC Role / Device Role / Timing Role: Precision analog switch providing low-RDS(on) and flat resistance vs. voltage to minimize gain error across full input range. Use Value: 17 Ω RDS(on) and <6 Ω flatness ensure <0.05% gain error; -80 dB off-isolation prevents inter-channel interference at 1 kHz–1 MHz. |
| Portable Test Equipment | Battery-Powered Meters |
Use Scenario: Configuring signal paths in handheld multimeters and LCR meters requiring auto-ranging and function switching under battery power. IC Role / Device Role / Timing Role: Low-power dual switch enabling relay replacement with nanowatt static consumption and fast 32 ns turn-on for responsive UI feedback. Use Value: 1 nW typical power extends battery life; 8 kV HBM ESD rating eliminates external protection components in field-serviceable units. | Use Scenario: Signal conditioning and range selection in portable pH/ORP meters using high-impedance glass electrodes. IC Role / Device Role / Timing Role: High-isolation SPST switch isolating reference and measurement electrodes during calibration cycles. Use Value: 100 pA leakage prevents drift in picoampere-level bias currents; 5 V supply compatibility aligns with standard meter power rails. |
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 |
|---|---|---|---|
| MAX4618EUA+ | Higher RDS(on) (45 Ω typ. at 5 V), no break-before-make guarantee, SOIC-8 only | Suitable for general-purpose switching where timing overlap is acceptable | Select when cost sensitivity outweighs precision timing requirements and MSOP footprint is not mandatory |
| ADG721BRMZ-REEL7 | Lower leakage (1 pA typ.), but no break-before-make, 16 Ω RDS(on), same MSOP-8 package | Better for ultra-low-leakage sensor front ends, but requires external timing control for safe switching | Choose when sub-picoampere leakage dominates design priority and system-level control can enforce safe sequencing |
Compared with MAX4618EUA+ and ADG721BRMZ-REEL7, the DG9234EDQ-T1-GE3 uniquely delivers guaranteed break-before-make timing in an MSOP-8 package with 17 Ω RDS(on) and 100 pA leakage - making it the only option that simultaneously satisfies precision medical multiplexing, compact layout, and intrinsic timing safety without external logic.
Availability
DG9234EDQ-T1-GE3 is available at Aetrix Electronics and suitable for medical instrumentation, portable test equipment, and battery-powered meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free packaging.
Supply support for DG9234EDQ-T1-GE3 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 analog switches, MOSFETs, and precision resistive solutions for demanding industrial and medical applications.
The DG9234EDQ-T1-GE3 belongs to Vishay's DG92xxE precision analog switch family, engineered specifically for low-leakage, low-charge-injection signal routing in battery-operated and high-accuracy measurement systems.
FAQ
What is the guaranteed break-before-make interval for DG9234EDQ-T1-GE3?
The DG9234EDQ-T1-GE3 guarantees break-before-make timing per its truth table and functional description: when IN1 and IN2 transition, Switch-1 turns off before Switch-2 turns on. This timing is inherent to the device architecture and does not require external delay circuitry. The exact minimum dead-time is not specified in absolute nanoseconds, but the design ensures no overlap under all operating conditions (–40 °C to +85 °C, 2.7–5.5 V).
Does DG9234EDQ-T1-GE3 support dual-supply operation?
No, DG9234EDQ-T1-GE3 is specified for single-supply operation only, with V+ ranging from +2.7 V to +5.5 V relative to GND. It does not support split-rail (±V) supplies or negative analog signal swings below GND. Analog signals must remain within 0 V to V+ to avoid forward-biasing internal clamping diodes.
What is the maximum analog signal voltage range supported by DG9234EDQ-T1-GE3?
The DG9234EDQ-T1-GE3 supports analog signals from 0 V to V+ (e.g., 0–5 V at V+ = 5 V). Per Absolute Maximum Ratings, voltages on NC, NO, or COM pins may exceed V+ by up to 0.3 V due to internal diode clamping, but sustained operation above V+ is not recommended. For reliable linear operation, analog inputs must stay within the 0 V to V+ range.
Is DG9234EDQ-T1-GE3 pin-compatible with DG9232EDQ-T1-GE3 or DG9233EDQ-T1-GE3?
Yes, DG9234EDQ-T1-GE3 shares identical MSOP-8 pinout and package dimensions with DG9232EDQ-T1-GE3 and DG9233EDQ-T1-GE3. However, logic polarity differs: DG9234EDQ-T1-GE3 has complementary IN1/IN2 control (break-before-make), whereas DG9232E is normally closed and DG9233E is normally open. PCB layout is interchangeable, but firmware/control logic must be adapted.
What is the thermal derating specification for DG9234EDQ-T1-GE3 in MSOP-8 package?
For the MSOP-8 package, DG9234EDQ-T1-GE3 has a thermal derating factor of 6.5 mW/°C above +70 °C ambient. The maximum power dissipation at +70 °C is 400 mW (same as SOIC-8 rating); above that, allowable power decreases linearly. At +85 °C, maximum continuous power drops to 302.5 mW. Layout must include adequate copper area and thermal vias for sustained operation near limits.
DG9234EDQ-T1-GE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 400mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 75ns, 50ns
- -3db Bandwidth:
- -
- Charge Injection:
- -0.78pC
- Channel Capacitance (CS(off), CD(off)):
- 3.8pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -108dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
DG9234EDQ-T1-GE3 FAQ
1.How can I place an order for DG9234EDQ-T1-GE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG9234EDQ-T1-GE3 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 DG9234EDQ-T1-GE3 reliable?
The price and inventory of DG9234EDQ-T1-GE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG9234EDQ-T1-GE3 is usually 5 days.
3.What payment methods are accepted for DG9234EDQ-T1-GE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG9234EDQ-T1-GE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG9234EDQ-T1-GE3?
DG9234EDQ-T1-GE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG9234EDQ-T1-GE3 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 DG9234EDQ-T1-GE3?
For technical support, including DG9234EDQ-T1-GE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG9234EDQ-T1-GE3 requirements.
6.How does Aetrix verify that DG9234EDQ-T1-GE3 is sourced from the original manufacturer or authorized distributors?
All DG9234EDQ-T1-GE3 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 DG9234EDQ-T1-GE3 meets industry standards.
7.What is the process for return or replacement of DG9234EDQ-T1-GE3?
All DG9234EDQ-T1-GE3 units undergo pre-shipment inspection (PSI). If there is an issue with DG9234EDQ-T1-GE3, 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 DG9234EDQ-T1-GE3 part is unused and in its original packaging.
Return procedure for DG9234EDQ-T1-GE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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