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Vishay Siliconix DG2738DN-T1-E4
- Part No.:
- DG2738DN-T1-E4
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-UFQFN
- Datasheet:
-
DG2738DN-T1-E4.pdf
- Description:
- IC SW SPST-NCX2 8OHM 8MINIQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,804
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Product details
Overview
DG2738DN-T1-E4 from Vishay Siliconix is a dual single-pole single-throw (SPST) analog switch in miniQFN-8L package, designed for bidirectional signal routing in low-voltage portable systems. It delivers 6 Ω typical on-resistance at 3 V supply, 720 MHz -3 dB bandwidth, and operates across 2.3 V to 4.3 V. Used in high-speed audio/data paths where low distortion and minimal charge injection are critical.
For engineers reviewing the DG2738DN-T1-E4 datasheet, DG2738DN-T1-E4 pinout, DG2738DN-T1-E4 application, or DG2738DN-T1-E4 equivalent, key selection criteria include on-resistance matching (±0.5 Ω), crosstalk (-48 dB @ 240 MHz), break-before-make timing (6 ns), and ultra-small 1.4 × 1.4 mm footprint for space-constrained PCB layouts.
Technical Context
The DG2738DN-T1-E4 implements independent digital control of two SPST switches via separate VIN1 and VIN2 inputs, enabling asynchronous channel enable/disable. Each switch supports rail-to-rail analog signal swing (0 V to V+) with clamping diodes limiting overvoltage to V+ + 0.3 V.
Its sub-micron CMOS process ensures low power consumption (1.0 µA max supply current), high ESD robustness (>5 kV HBM), and latch-up immunity (>300 mA per JESD78). Switching performance is characterized with 50 Ω source/load and 35 pF load capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 6 Ω typ. at 3 V - ensures minimal signal attenuation and voltage drop in audio/RF signal paths |
| -3 dB Bandwidth | 720 MHz - supports high-fidelity video, USB 2.0, and fast data switching without roll-off |
| Crosstalk | -48 dB @ 240 MHz - prevents interference between adjacent channels in multi-signal routing |
| Charge Injection | 10.4 pC - limits glitch amplitude in precision sampling circuits and ADC front-ends |
| Supply Voltage Range | 2.3 V to 4.3 V - compatible with Li-ion battery discharge profile and single-supply logic interfaces |
| Turn-On/Off Time | 23 ns / 13 ns typ. - enables fast multiplexing in time-critical instrumentation and test equipment |
| Off-Isolation | -79 dB @ 1 MHz - maintains signal integrity when channel is disabled in sensitive receiver paths |
Pinout & Package
Package: miniQFN-8L (1.4 mm × 1.4 mm × 0.55 mm), RoHS-compliant, Pb-free terminations, wettable flank option not specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for analog and digital sections; must be low-impedance connection to minimize noise coupling |
| 2 | V+ | Positive supply input (2.3–4.3 V); powers internal logic and switch driver circuitry |
| 3 | D1 | Channel 1 drain terminal - bidirectional analog node connected to signal source or load |
| 4 | S1 | Channel 1 source terminal - bidirectional analog node; forms switch path with D1 when enabled |
| 5 | VIN1 | Independent digital control input for Channel 1 - logic high enables S1–D1 conduction |
| 6 | D2 | Channel 2 drain terminal - isolated from D1; supports independent signal routing |
| 7 | S2 | Channel 2 source terminal - forms switch path with D2 when VIN2 = high |
| 8 | VIN2 | Independent digital control input for Channel 2 - enables asynchronous operation vs. DG2737 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent SPST control | VIN1/VIN2 allow separate enable/disable of each channel - eliminates need for external gating logic |
| Rail-to-rail analog signal handling | Supports 0 V to V+ signal swing with internal clamping - simplifies level-shifting in mixed-supply systems |
| Ultra-low 10.4 pC charge injection | Minimizes voltage glitches during switching - critical for sample-and-hold and precision DAC output buffering |
| Miniature 1.4 × 1.4 mm QFN | Reduces PCB area by >50% vs. comparable SOIC-8 - enables dense layout in wearables and hearing aids |
| High-speed 720 MHz bandwidth | Preserves signal integrity up to UWB and HDMI 1.4 TMDS frequencies - suitable for portable display interfaces |
Applications
| Portable Audio Multiplexer | USB 2.0 Data Line Switch |
|---|---|
|
Use Scenario: Routing microphone/line-in signals between multiple codecs in smartphones or wireless earbuds. IC Role / Device Role / Timing Role: Dual SPST switch isolating analog inputs while maintaining low THD+N (<0.01%) and wideband flatness. Use Value: 6 Ω RON and 10.4 pC charge injection prevent audible pop/click and preserve SNR >95 dB. |
Use Scenario: Dynamic reconfiguration of USB D+/D− lines between host controller and peripheral ports in docking stations. IC Role / Device Role / Timing Role: High-bandwidth analog switch enabling hot-plug detection and port arbitration without signal degradation. Use Value: 720 MHz bandwidth and -48 dB crosstalk ensure full-speed USB 2.0 compliance (480 Mbps) with <1% jitter. |
| Medical Sensor Signal Path | Test Equipment Channel Selector |
|
Use Scenario: Selecting between ECG, SpO₂, and temperature sensor outputs in handheld patient monitors. IC Role / Device Role / Timing Role: Low-leakage (<100 nA off-state) analog switch preserving microvolt-level bio-potential accuracy. Use Value: -79 dB off-isolation and <0.5 Ω RON matching suppress common-mode error and gain drift across channels. |
Use Scenario: Automated signal routing in benchtop oscilloscopes and logic analyzers with 16+ input channels. IC Role / Device Role / Timing Role: Fast-switching (23 ns tON), low-skew (25 ps) dual switch enabling synchronized acquisition paths. Use Value: Independent VIN1/VIN2 control allows parallel channel enable without inter-channel delay skew. |
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 |
|---|---|---|---|
| TMUX1574RTER | Higher 8.5 Ω RON at 3 V; integrated ESD protection (±2 kV); 1.8 V min supply | Better suited for 1.8 V logic systems; lower bandwidth (300 MHz) | Select when interfacing with low-voltage microcontrollers and ESD-sensitive environments |
| ADG723BRMZ-REEL | 7 Ω RON at 3 V; 500 MHz bandwidth; SOIC-8 package (3 × 4.9 mm) | Larger footprint; higher thermal resistance; no independent VIN1/VIN2 control (shared EN) | Choose for legacy board upgrades requiring SOIC compatibility and simplified control interface |
Compared with TMUX1574RTER and ADG723BRMZ-REEL, the DG2738DN-T1-E4 offers superior bandwidth and smaller size but requires separate digital controls - making it optimal for new designs prioritizing speed, density, and channel independence.
Availability
DG2738DN-T1-E4 is available at Aetrix Electronics and suitable for portable audio multiplexing, USB 2.0 line switching, medical sensor signal routing, test equipment channel selection, and high-speed data acquisition requiring stable component supply and consistent parametric performance.
Supply support for DG2738DN-T1-E4 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 semiconductor manufacturer specializing in discrete components and analog ICs, with leadership in MOSFETs, diodes, optoelectronics, and precision analog switches.
The DG2738DN-T1-E4 belongs to Vishay's low-voltage analog switch product line, engineered for battery-powered portable electronics demanding ultra-low RON, minimal charge injection, and miniature packaging.
FAQ
What is the maximum analog signal voltage range supported by the DG2738DN-T1-E4?
The DG2738DN-T1-E4 supports analog signals from 0 V to V+, where V+ ranges from 2.3 V to 4.3 V. Internal clamping diodes limit any signal exceeding V+ to V+ + 0.3 V, protecting the device from overvoltage. This rail-to-rail capability makes DG2738DN-T1-E4 ideal for direct interfacing with Li-ion battery-powered circuits without external level shifters.
Does the DG2738DN-T1-E4 support independent control of its two switch channels?
Yes, the DG2738DN-T1-E4 features fully independent digital control via VIN1 and VIN2 pins. Unlike the DG2737 (shared control) or DG2739 (break-before-make), DG2738DN-T1-E4 allows asynchronous enable/disable of Channel 1 (S1/D1) and Channel 2 (S2/D2), enabling flexible signal routing in multi-path architectures without cross-talk risk.
What is the typical on-resistance matching between channels for the DG2738DN-T1-E4?
The DG2738DN-T1-E4 guarantees on-resistance matching (ΔRON) of ≤0.5 Ω typical at 3 V supply and 8 mA current. This tight matching ensures balanced gain and phase response across dual signal paths - essential for differential signaling, stereo audio, and precision instrumentation applications using DG2738DN-T1-E4.
Can the DG2738DN-T1-E4 be used in USB 2.0 applications?
Yes, the DG2738DN-T1-E4 is suitable for USB 2.0 data line switching due to its 720 MHz -3 dB bandwidth, low 25 ps channel-to-channel skew, and -48 dB crosstalk at 240 MHz. When implemented with proper 50 Ω termination and controlled impedance routing, DG2738DN-T1-E4 maintains signal integrity for full-speed (480 Mbps) USB 2.0 compliance.
What package type and dimensions does the DG2738DN-T1-E4 use?
The DG2738DN-T1-E4 uses the miniQFN-8L package measuring 1.4 mm × 1.4 mm × 0.55 mm with 0.4 mm pitch. Its compact footprint, exposed thermal pad (not electrically connected), and RoHS-compliant Pb-free terminations make DG2738DN-T1-E4 suitable for high-density portable designs including hearing aids, smartwatches, and IoT edge sensors.
DG2738DN-T1-E4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 8Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 2.3V ~ 4.3V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 60ns, 50ns
- -3db Bandwidth:
- 720MHz
- Charge Injection:
- 10.4pC
- Channel Capacitance (CS(off), CD(off)):
- 4.4pF, 3.8pF
- Current - Leakage (IS(off)) (Max):
- 10nA
- Crosstalk:
- -109dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-miniQFN (1.4x1.4)
DG2738DN-T1-E4 FAQ
1.How can I place an order for DG2738DN-T1-E4 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG2738DN-T1-E4 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 DG2738DN-T1-E4 reliable?
The price and inventory of DG2738DN-T1-E4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG2738DN-T1-E4 is usually 5 days.
3.What payment methods are accepted for DG2738DN-T1-E4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG2738DN-T1-E4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG2738DN-T1-E4?
DG2738DN-T1-E4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG2738DN-T1-E4 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 DG2738DN-T1-E4?
For technical support, including DG2738DN-T1-E4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG2738DN-T1-E4 requirements.
6.How does Aetrix verify that DG2738DN-T1-E4 is sourced from the original manufacturer or authorized distributors?
All DG2738DN-T1-E4 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 DG2738DN-T1-E4 meets industry standards.
7.What is the process for return or replacement of DG2738DN-T1-E4?
All DG2738DN-T1-E4 units undergo pre-shipment inspection (PSI). If there is an issue with DG2738DN-T1-E4, 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 DG2738DN-T1-E4 part is unused and in its original packaging.
Return procedure for DG2738DN-T1-E4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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