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STMicroelectronics STG3482QTR
- Part No.:
- STG3482QTR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-UFQFN Exposed Pad
- Datasheet:
-
STG3482QTR.pdf
- Description:
- IC SWITCH SP4T X 2 5.2OHM 16QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
STG3482QTR from STMicroelectronics is a low-voltage dual SP4T analog switch, also used as a dual 4:1 multiplexer/demultiplexer switch. The device is fabricated in silicon-gate C²MOS technology and is designed for single-supply operation from 1.65 V to 4.3 V, making it suitable for portable systems, audio routing, video signal switching, sensor-channel selection, and low-voltage mixed-signal signal paths.
For engineers reviewing the STG3482QTR datasheet, STG3482QTR pinout, STG3482QTR application, or STG3482QTR equivalent, this analog switch is most relevant for designs requiring two independent 4:1 switch sections, 5.2 Ω maximum on-resistance at 3.0 V under defined test conditions, 300 MHz typical -3 dB bandwidth, break-before-make switching, low leakage, 4.3 V tolerant control inputs, and compact QFN16L 2.6 mm × 1.8 mm tape-and-reel assembly.
Technical Context
STG3482QTR contains two independent common ports, D1 and D2, with each common port selectable to one of four switch channels through the shared 1SEL and 2SEL control inputs. When /OE is high, all switch paths are placed in high impedance; when /OE is low, the SEL inputs select D1-1S1 / D2-2S1, D1-1S2 / D2-2S2, D1-1S3 / D2-2S3, or D1-1S4 / D2-2S4.
The analog path supports signal levels from 0 V to VCC, while the control inputs tolerate up to 4.3 V and support 1.8 V-compatible logic thresholds when VCC is in the 2.3 V to 3.0 V range. RF and signal-integrity parameters include -75 dB typical off isolation at 1 MHz, -77 dB typical crosstalk at 1 MHz, 0.01% typical THD at 3.7 V under audio-band test conditions, and 300 MHz typical bandwidth with a 50 Ω load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | Low-voltage high-speed CMOS dual analog SP4T switch / dual 4:1 multiplexer-demultiplexer. |
| Switch Configuration | Two independent SP4T sections, with common ports D1 and D2 each selectable to one of four analog switch channels. |
| Supply Voltage | 1.65 V to 4.3 V single-supply operating range for portable and low-voltage mixed-signal systems. |
| Analog Signal Range | 0 V to VCC on switch inputs and outputs, supporting rail-referenced analog routing in single-supply designs. |
| Control Input Range | 0 V to 4.3 V control input range, with 4.3 V tolerant digital control inputs. |
| Logic Threshold Context | 1.8 V compatible threshold behavior on digital control inputs when VCC is from 2.3 V to 3.0 V. |
| On-Resistance | 4.6 Ω typical at VCC = 4.3 V and 5.8 Ω typical at VCC = 3.0 V; RON is 5.2 Ω maximum at VCC = 3.0 V, VS = 3 V, and IS = 8 mA. |
| Channel Matching | 0.3 Ω on-resistance matching between channels, supporting balanced routing across the selected analog paths. |
| Bandwidth | 300 MHz typical -3 dB bandwidth on all channels with a 50 Ω load and 1 V bias. |
| Switching Time | Turn-on time down to 12 ns typical / 18 ns maximum and turn-off time down to 10 ns typical / 15 ns maximum at higher VCC operating conditions. |
| Break-Before-Make | Break-before-make delay helps prevent temporary shorting between selected channels during switching transitions. |
| Leakage Current | OFF-state switch leakage is ±20 nA typical and ±100 nA maximum at VCC = 4.3 V under the listed test condition. |
| Low-Power Operation | ICC is 0.1 µA maximum at TA = 25°C for ultra-low static power consumption. |
| Signal Integrity | -75 dB typical off isolation and -77 dB typical crosstalk at 1 MHz; 0.01% typical THD under audio-band test conditions. |
| ESD and Latch-Up | 2000 V human-body-model ESD rating and latch-up performance exceeding 300 mA per JESD78 Class II. |
| Package | QFN16L package, 2.6 mm × 1.8 mm, 0.40 mm pitch, supplied as STG3482QTR in tape-and-reel format. |
| Operating Temperature | -40°C to +85°C operating temperature range for portable, consumer, and embedded mixed-signal equipment. |
Pinout & Package
STG3482QTR is supplied in a QFN16L package measuring 2.6 mm × 1.8 mm with 0.40 mm lead pitch and a 0.45 mm to 0.55 mm package height range. This compact no-lead package supports short analog-signal routing, dense portable PCB placement, and low parasitic interconnects for audio, video, sensor, and high-speed analog switching paths. The exposed pad must be soldered to a floating PCB area and must not be connected to power or ground.
| Pin / Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 - 1S4 | Independent channel for switch section 1. | Connects to common port D1 when /OE is low and the control state selects channel S4. |
| Pin 2 - VCC | Positive supply voltage. | Supplies the analog switch core over the 1.65 V to 4.3 V operating range and defines the allowable analog signal range. |
| Pin 3 - 1SEL | Switch selection control input. | Works with 2SEL to select which S-channel is connected to each common D port. |
| Pin 4 - 2S1 | Independent channel for switch section 2. | Connects to common port D2 when /OE is low and the control state selects channel S1. |
| Pin 5 - NC | No-connect terminal. | Provides no functional switch connection and should be handled as a no-connect pad in the PCB layout. |
| Pin 6 - 2S2 | Independent channel for switch section 2. | Connects to common port D2 when /OE is low and the control state selects channel S2. |
| Pin 7 - D2 | Common channel for switch section 2. | Routes the second common analog node to one of 2S1, 2S2, 2S3, or 2S4 according to the SEL control state. |
| Pin 8 - 2S3 | Independent channel for switch section 2. | Connects to common port D2 when /OE is low and the control state selects channel S3. |
| Pin 9 - 2S4 | Independent channel for switch section 2. | Connects to common port D2 when /OE is low and the control state selects channel S4. |
| Pin 10 - 2SEL | Switch selection control input. | Works with 1SEL to define the active 4:1 path for both switch sections. |
| Pin 11 - GND | Ground reference. | Provides the 0 V reference for the device supply and control logic. |
| Pin 12 - 1S1 | Independent channel for switch section 1. | Connects to common port D1 when /OE is low and the control state selects channel S1. |
| Pin 13 - /OE | Active-low output-enable control. | Enables the selected analog switch paths when low and disconnects all switch paths into high impedance when high. |
| Pin 14 - 1S2 | Independent channel for switch section 1. | Connects to common port D1 when /OE is low and the control state selects channel S2. |
| Pin 15 - D1 | Common channel for switch section 1. | Routes the first common analog node to one of 1S1, 1S2, 1S3, or 1S4 according to the SEL control state. |
| Pin 16 - 1S3 | Independent channel for switch section 1. | Connects to common port D1 when /OE is low and the control state selects channel S3. |
Key Features
- Dual SP4T analog switch / dual 4:1 multiplexer-demultiplexer for low-voltage analog signal routing.
- 1.65 V to 4.3 V single-supply operation with analog signal range from 0 V to VCC.
- Low on-resistance with 4.6 Ω typical at VCC = 4.3 V and 5.8 Ω typical at VCC = 3.0 V.
- 300 MHz typical -3 dB bandwidth on all channels for wideband analog and video signal paths.
- Fast switching with break-before-make behavior and /OE control for high-impedance disconnect.
- 4.3 V tolerant digital control inputs with 1.8 V compatible threshold behavior in the 2.3 V to 3.0 V VCC range.
- Low static current, low leakage, -77 dB typical crosstalk at 1 MHz, and 0.01% typical THD under audio-band test conditions.
- QFN16L 2.6 mm × 1.8 mm package supplied in tape-and-reel format for compact SMT production.
Applications
| Portable Audio Signal Routing | Video and Wideband Analog Switching |
|---|---|
|
Use Scenario: Battery-powered devices that route multiple audio sources or loads through a low-voltage analog switch. IC Role: Dual 4:1 switch selecting one of four analog channels for each common audio path. Use Value: Low on-resistance, low THD, and low static current help preserve audio signal quality while minimizing standby power. |
Use Scenario: Portable or embedded systems that need compact selection between multiple wideband analog or video paths. IC Role: High-speed CMOS analog multiplexer/demultiplexer with 300 MHz typical bandwidth. Use Value: The 300 MHz bandwidth, fast switching, and compact QFN16L footprint support dense signal-routing designs where board area is limited. |
| Sensor Channel Multiplexing | Low-Voltage Mixed-Signal Interfaces |
|
Use Scenario: Embedded controllers selecting among multiple analog sensor outputs before an ADC or signal-conditioning stage. IC Role: Dual SP4T analog switch providing two independent 4:1 channel-selection paths. Use Value: The 1.65 V to 4.3 V supply range and low leakage support compact sensor-interface designs powered from low-voltage system rails. |
Use Scenario: Mixed-signal boards where 1.8 V logic must control analog routing powered from a low-voltage rail. IC Role: Logic-controlled analog switch with /OE disconnect and shared SEL inputs. Use Value: 4.3 V tolerant control pins and 1.8 V compatible threshold behavior simplify control from low-voltage processors while maintaining analog switching flexibility. |
Equivalent & Alternatives
When evaluating STG3482QTR equivalent devices, engineers should compare switch topology, number of channels, analog signal range, supply-voltage range, on-resistance, bandwidth, switching timing, break-before-make behavior, control-pin logic thresholds, package footprint, and whether the circuit needs true dual SP4T routing or can be redesigned around SPDT switch sections.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STG3682QTR | STMicroelectronics low-voltage high-bandwidth dual SPDT switch in a QFN-10L package, with 1.65 V to 4.3 V operation but only 2:1 selection per switch section. | Better suited when the design needs two 2:1 analog switch paths rather than the two 4:1 switch paths provided by STG3482QTR. | Select STG3482QTR for dual SP4T channel selection; select STG3682QTR only when the system can use a smaller dual SPDT switch topology. |
| STG3693QTR | STMicroelectronics low-voltage high-bandwidth quad SPDT video switch in a QFN16L 2.6 mm × 1.8 mm package, with 1.65 V to 4.3 V operation and a different 2:1 switch architecture. | Useful when the circuit needs four independent SPDT paths rather than two linked 4:1 multiplexer paths. | Compare STG3482QTR vs STG3693QTR by required mux topology, control scheme, signal bandwidth, pin mapping, and whether independent SPDT routing can replace the dual SP4T structure. |
| STG3699A | STMicroelectronics quad SPDT analog switch with very low on-resistance behavior and break-before-make operation, but with a different switch configuration from STG3482QTR. | Relevant for low-resistance 2:1 analog switching designs where the system architecture does not require the exact STG3482QTR dual 4:1 mux arrangement. | Use STG3482QTR when dual SP4T channel selection and QFN16L pinout compatibility are required; use STG3699A only when the design can be reworked around quad SPDT routing. |
Compared with STG3682QTR, STG3482QTR provides a wider 4:1 selection structure for each of two common analog ports. STG3482QTR vs STG3693QTR or STG3699A selection depends mainly on whether the circuit needs dual SP4T switching, independent SPDT paths, lower on-resistance, higher bandwidth, or a specific PCB footprint and control-pin mapping.
Quality
STG3482QTR should be sourced as original STMicroelectronics components through traceable and controlled supply channels. Quality verification procedures may include QFN16L package inspection, top-mark validation, tape-and-reel label review, solderability testing, exposed-pad placement inspection, VCC and GND continuity checks, SEL and /OE logic-function testing, selected-path on-resistance verification, leakage screening, and incoming inspection according to portable mixed-signal product production requirements.
Availability
STG3482QTR is available at Aetrix Electronics and suitable for portable audio routing, analog signal multiplexing, video signal switching, sensor channel selection, and compact low-voltage mixed-signal systems requiring stable component supply and repeatable production support.
Supply support may include scheduled delivery planning, volume procurement support, BOM continuity assistance, traceable sourcing management, and long-term availability support for embedded device manufacturers, consumer electronics builders, portable equipment developers, repair groups, contract manufacturers, and legacy product owners using ST analog switch designs.
For production deployment, confirming the QFN16L 2.6 mm × 1.8 mm footprint, tape-and-reel format, exposed-pad floating requirement, 1.65 V to 4.3 V supply plan, analog signal range, SEL and /OE control logic, operating temperature requirement, and sourcing continuity helps reduce procurement risk and improve manufacturing stability.
Manufacturer
STMicroelectronics supplies analog switches, multiplexers, power-management ICs, microcontrollers, sensors, RF devices, protection products, and discrete semiconductors for consumer, industrial, automotive, communication, and portable electronics. STG3482QTR belongs to ST's low-voltage analog switch portfolio for compact signal routing in battery-powered and mixed-signal applications.
FAQ
What is STG3482QTR used for?
STG3482QTR is used for low-voltage analog signal routing, dual 4:1 multiplexing, audio source selection, video path switching, sensor channel selection, and portable mixed-signal interfaces. It provides two independent SP4T switch sections controlled by shared SEL inputs and an active-low output-enable pin.
What switch configuration does STG3482QTR provide?
STG3482QTR provides two SP4T analog switch sections. The D1 common port can connect to 1S1, 1S2, 1S3, or 1S4, while the D2 common port can connect to 2S1, 2S2, 2S3, or 2S4. The selected channel is controlled by 1SEL and 2SEL when /OE is low.
What supply voltage does STG3482QTR require?
STG3482QTR operates from a 1.65 V to 4.3 V single supply. The switch inputs and outputs support analog signal levels from 0 V to VCC, while the digital control pins tolerate up to 4.3 V. This makes STG3482QTR practical for battery-powered products using low-voltage logic and analog rails.
How does the /OE pin work on STG3482QTR?
STG3482QTR uses an active-low /OE pin. When /OE is low, 1SEL and 2SEL select the active switch path for both SP4T sections. When /OE is high, all switches are disconnected and the D1 and D2 common ports are isolated from the S-channel pins in a high-impedance state.
What package is used by STG3482QTR?
STG3482QTR uses a QFN16L package measuring 2.6 mm × 1.8 mm with 0.40 mm pitch and tape-and-reel packaging. The package includes an exposed pad, but that exposed pad must be soldered to a floating PCB area and must not be connected to the power rail or ground.
Is STG3482QTR suitable for audio switching?
STG3482QTR can be used in audio switching paths because it combines low on-resistance, low leakage, break-before-make switching, and low distortion behavior. The analog characteristics list 0.01% typical total harmonic distortion at 3.7 V under audio-band test conditions, making the device useful for portable audio routing designs within its voltage and signal limits.
What are common STG3482QTR alternatives?
Common comparison parts include STG3682QTR for lower-channel-count dual SPDT routing, STG3693QTR for quad SPDT high-bandwidth analog switching, and STG3699A for low-resistance quad SPDT switching. These alternatives are not direct drop-in replacements for STG3482QTR; engineers must compare switch topology, pinout, bandwidth, on-resistance, and control logic before changing the design.
STG3482QTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- 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):
- 18ns, 15ns
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- 11pC
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- 20nA
- Crosstalk:
- -77dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (2.6x1.8)
STG3482QTR FAQ
1.How can I place an order for STG3482QTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STG3482QTR 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 STG3482QTR reliable?
The price and inventory of STG3482QTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STG3482QTR is usually 5 days.
3.What payment methods are accepted for STG3482QTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STG3482QTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STG3482QTR?
STG3482QTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STG3482QTR 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 STG3482QTR?
For technical support, including STG3482QTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STG3482QTR requirements.
6.How does Aetrix verify that STG3482QTR is sourced from the original manufacturer or authorized distributors?
All STG3482QTR 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 STG3482QTR meets industry standards.
7.What is the process for return or replacement of STG3482QTR?
All STG3482QTR units undergo pre-shipment inspection (PSI). If there is an issue with STG3482QTR, 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 STG3482QTR part is unused and in its original packaging.
Return procedure for STG3482QTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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