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STMicroelectronics STG3682QTR
- Part No.:
- STG3682QTR
- Manufacturer:
- STMicroelectronics
- Package:
- 10-UFQFN
- Datasheet:
-
STG3682QTR.pdf
- Description:
- IC SWITCH SPDT X 2 5.2OHM 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:24,739
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Product details
Overview
STG3682QTR from STMicroelectronics is a dual SPDT analog switch fabricated in C2MOS technology, functioning as a 2:1 multiplexer/demultiplexer for high-speed signal routing. It operates from 1.65V to 4.3V single supply, delivers 4.6Ω RON at 4.3V/25°C, achieves 800MHz -3dB bandwidth, and supports USB 2.0 High-Speed (480Mbps) signal switching in portable audio/video interfaces.
For engineers reviewing the STG3682QTR datasheet, STG3682QTR pinout, STG3682QTR application, or STG3682QTR equivalent, key selection criteria include ON-resistance matching (≤0.3Ω), break-before-make delay (≤7ns), charge injection (5.0pC max at 4.3V), and 4.3V-tolerant control inputs compatible with 1.8V logic levels.
Technical Context
The STG3682QTR integrates two independent SPDT switches controlled by complementary SEL1/SEL2 inputs, enabling simultaneous channel selection with guaranteed break-before-make timing. Each switch exhibits matched RON flatness (≤1.6Ω over full signal range) and low crosstalk (-78dB at 1MHz).
Its C2MOS process ensures ultra-low ICC (≤0.2µA at 85°C) and robust ESD immunity (2000V HBM), while the 1.8mm × 1.4mm QFN10 package supports high-density PCB layouts in space-constrained USB and mobile applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 4.3V single supply - enables direct interface with Li-ion battery-powered systems and 1.8V/3.3V logic domains. |
| RON | 4.6Ω max at VCC=4.3V/25°C - minimizes signal attenuation and distortion in high-fidelity analog paths. |
| BW (-3dB) | 800MHz typical - supports full USB 2.0 High-Speed data rate (480Mbps) without signal integrity degradation. |
| Charge Injection | 5.0pC max at VCC=4.3V - reduces glitch-induced errors in precision sampling and video switching. |
| OIRR | -79dB at 1MHz - isolates inactive channels to prevent signal bleed in multi-source audio/video routing. |
| tD (BBM) | 1–7ns - guarantees no short-circuit between source paths during switching transitions. |
| ESD HBM | 2000V - protects against handling damage in manufacturing and end-user environments. |
Pinout & Package
STG3682QTR uses a 10-pin QFN package (1.8mm × 1.4mm, 0.4mm pitch) with exposed thermal pad requiring floating connection. Pin 1 is 1S1; pins 1/3/6/8 are source terminals; pins 2/7 are common outputs (D1/D2); pins 4/10 are control inputs (SEL2/SEL1); pin 9 is VCC; pin 5 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,3,6,8 (1S1,1S2,2S1,2S2) | Analog source inputs | Four independent signal sources routed to D1/D2 via SPDT action; each pair shares one common output path. |
| 2,7 (D1,D2) | Common analog outputs | Single-pole output nodes - D1 serves switch S1 (1S1/1S2), D2 serves switch S2 (2S1/2S2). |
| 4,10 (SEL2,SEL1) | Digital control inputs | Active-high logic: SEL1=H selects 1S1→D1; SEL2=H selects 2S1→D2 - complementary control enables concurrent channel selection. |
| 9 (VCC) | Positive supply | Single power rail supporting 1.65–4.3V operation; powers internal logic and analog switch core. |
| 5 (GND) | Ground reference | Return path for analog signals and digital control; must be low-impedance for noise-sensitive switching. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | ICC ≤ 0.2µA at 85°C - extends battery life in always-on portable devices without compromising switching speed. |
| Matched ON-resistance | ΔRON ≤ 0.3Ω across all four channels - ensures consistent gain and phase response in differential or stereo signal paths. |
| USB 2.0 High-Speed compliance | tSK(P) ≤ 60ps, TJ ≤ 130ps at 480Mbps - meets jitter and skew requirements for reliable high-data-rate interface switching. |
| 4.3V-tolerant control inputs | VIH = 0.65×VCC, VIL ≤ 0.4V at VCC = 4.3V - allows direct interfacing with 1.8V GPIOs while powered from higher VCC. |
| Latch-up immunity | Exceeds 100mA per JESD78 Class II - prevents destructive latch-up under transient overvoltage conditions in noisy industrial environments. |
Applications
| USB 2.0 Peripheral Switching | Mobile Audio Routing |
|---|---|
|
Use Scenario: Dynamic selection between two USB upstream ports (e.g., host PC and OTG device) on a tablet or docking station. IC Role / Device Role / Timing Role: Dual SPDT switch providing bidirectional 480Mbps data path isolation with sub-7ns break-before-make timing. Use Value: Enables seamless USB role swapping without signal corruption or bus contention, validated by 130ps total jitter at 480Mbps. |
Use Scenario: Routing microphone input between headset jack and onboard MEMS mic in smartphones during call handover. IC Role / Device Role / Timing Role: Low-RON analog switch with 5.0pC charge injection minimizing pop/click artifacts during real-time audio path reconfiguration. Use Value: Maintains SNR >95dB and THD <-85dB in 20Hz–20kHz band due to matched 4.6Ω RON and -79dB OFF isolation. |
| HDMI Mux for Portable Displays | Video Signal Multiplexing |
|
Use Scenario: Selecting between HDMI and DisplayPort video sources feeding a single MIPI DSI transmitter in compact projectors. IC Role / Device Role / Timing Role: High-bandwidth 800MHz analog switch preserving TMDS signal integrity up to 1.65Gbps pixel clock rates. Use Value: Achieves <0.64% differential gain error and <0.1° phase error at 3.0–4.3V, ensuring accurate color reproduction. |
Use Scenario: Switching composite video signals between camera modules and display drivers in automotive rear-view systems. IC Role / Device Role / Timing Role: Dual-channel analog multiplexer with -60dB crosstalk at 10MHz preventing ghosting or interference between adjacent video feeds. Use Value: Supports NTSC/PAL resolution switching with <1ns propagation delay skew between channels for synchronized frame capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS5A23157DCUR | RON = 0.9Ω @ 3.3V (lower), BW = 200MHz (narrower), ICC = 0.1µA (lower), QFN10 footprint identical | Optimized for low-RON audio line driving but lacks USB 2.0 compliance and 800MHz bandwidth | Select when ultra-low resistance dominates over high-frequency performance and USB timing specs. |
| ADG723BRMZ | RON = 4.5Ω @ 3V, BW = 200MHz, ICC = 0.5µA, SOIC-10 package (larger), no USB 2.0 validation | Suitable for industrial control I/O expansion where board space and high-speed compliance are secondary | Choose for legacy SOIC compatibility and extended temperature range (-40°C to +125°C), not for portable high-speed interfaces. |
Compared with TS5A23157DCUR and ADG723BRMZ, the STG3682QTR uniquely balances USB 2.0 timing compliance (130ps TJ), 800MHz bandwidth, and 4.3V-tolerant 1.8V-compatible control - making it the only option qualified for battery-powered, high-data-rate consumer interface switching.
Availability
STG3682QTR is available at Aetrix Electronics and suitable for USB 2.0 peripheral switching, mobile audio routing, and HDMI/DisplayPort muxing requiring stable component supply across production volumes and long-lifecycle designs.
Supply support for STG3682QTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog switches for industrial, automotive, and consumer markets.
The STG3682 belongs to ST's high-speed analog switch product line, engineered specifically for low-voltage, high-bandwidth signal routing in portable electronics where power efficiency, small footprint, and USB 2.0 compliance are critical.
FAQ
What is the maximum recommended operating voltage for STG3682QTR?
The absolute maximum VCC rating is 5.5V, but the recommended operating range is strictly 1.65V to 4.3V per datasheet Table 5. Operation above 4.3V voids USB 2.0 compliance and risks exceeding RON flatness specifications. The 4.3V upper limit ensures guaranteed 800MHz bandwidth and -79dB OFF isolation performance.
Can STG3682QTR switch differential USB 2.0 signals without termination?
No - STG3682QTR switches single-ended signals only. For USB 2.0 differential pairs, two STG3682QTR devices are required (one per D+/D− line), with matched layout and external 90Ω differential termination at the receiver. The device's 130ps total jitter and 26ps channel skew meet USB 2.0 eye diagram requirements when used in this configuration.
Is the exposed thermal pad on QFN10 required to connect to ground?
No - the exposed pad must be soldered to a floating copper plane per datasheet Note in Section 1.2. Connecting it to VCC or GND violates the internal C2MOS structure and may cause latch-up or increased leakage. Thermal relief is achieved through conduction via the floating pad and surrounding solder joints, not electrical connection.
Does STG3682QTR support level-shifting between 1.8V control and 3.3V analog signals?
Yes - SEL1/SEL2 inputs tolerate up to 4.3V regardless of VCC, and VIH/VIL thresholds scale with VCC. When VCC = 3.3V, VIH = 2.15V min, allowing reliable recognition of 1.8V logic highs. Analog signal swing is limited to 0–VCC, so 3.3V analog operation requires VCC ≥ 3.3V.
STG3682QTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 5.2Ohm
- Channel-to-Channel Matching (ΔRon):
- 300mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 4.3V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 15ns, 13ns
- -3db Bandwidth:
- 800MHz
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF
- Current - Leakage (IS(off)) (Max):
- 20nA
- Crosstalk:
- -78dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-QFN (1.8x1.4)
STG3682QTR FAQ
1.How can I place an order for STG3682QTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STG3682QTR 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 STG3682QTR reliable?
The price and inventory of STG3682QTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STG3682QTR is usually 5 days.
3.What payment methods are accepted for STG3682QTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STG3682QTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STG3682QTR?
STG3682QTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STG3682QTR 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 STG3682QTR?
For technical support, including STG3682QTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STG3682QTR requirements.
6.How does Aetrix verify that STG3682QTR is sourced from the original manufacturer or authorized distributors?
All STG3682QTR 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 STG3682QTR meets industry standards.
7.What is the process for return or replacement of STG3682QTR?
All STG3682QTR units undergo pre-shipment inspection (PSI). If there is an issue with STG3682QTR, 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 STG3682QTR part is unused and in its original packaging.
Return procedure for STG3682QTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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