TS3A5018QPWRQ1 - 10-Ohm Quad SPDT Analog Switch | Texas Instruments
부품 번호: TS3A5018QPWRQ1 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0.95 | $0.95 |
| 10 | $0.86 | $8.60 |
| 100 | $0.68 | $68.00 |
| 500 | $0.55 | $275.00 |
| 1,000 | $0.45 | $450.00 |
TS3A5018QPWRQ1 개요
An analog switch (also called an analog multiplexer/demultiplexer or bidirectional switch IC) is a semiconductor device that routes analog or digital signals through a MOSFET transmission gate controlled by a digital select input. Analog switches sit within the broader signal-routing hierarchy: analog switch IC -> signal multiplexer -> interface and switching IC -> analog signal chain. They are fundamental building blocks wherever a processor must dynamically reconfigure signal paths without degrading signal integrity.
Key features of the TS3A5018QPWRQ1 include the low 10-ohm typical on-resistance, wide 1.8V to 3.6V single-supply operation suited to battery-powered and low-voltage systems, full rail-to-rail signal handling, and break-before-make switching that prevents momentary shorting of signal sources. The Q1 suffix denotes AEC-Q100 qualification for automotive environments, with an extended operating temperature range supporting under-hood and body electronics applications.
The device uses CMOS transmission-gate architecture, which keeps on-resistance relatively flat across the signal range and minimizes signal distortion for audio and data-routing tasks. Because signals up to V+ can pass in either direction, the switches work equally well for multiplexing and demultiplexing, such as sharing a codec between microphone and headset paths or switching antenna and test signals.
Typical applications include automotive infotainment audio routing, battery-management cell-monitoring multiplexing, portable instrument signal switching, and general-purpose I/O expansion in industrial control boards.
Design tip: minimize RON signal loss by keeping source impedance low, and always provide a solid V+ decoupling capacitor (0.1uF close to the pin). Remember that the analog signal range is limited to the 0V-to-V+ supply window; signals outside this range must be blocked or level-shifted.
드롭인 대체품: TS3A5018QPWRQ1 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: TS3A5018QPWRQ1 (동일 폼 팩터 및 풋프린트) — 차이점: Signal Range.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
TS3A5018PWR
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$0.24 / 개
데이터시트 보기 →TS3A5018QPWRQ1 최대 정격 & 전기적 특성
| 기능 | Quad SPDT (2:1) analog switch |
| Number of Channels | 4 |
| On-Resistance (RON) | 10 ohm (typ) |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Signal Range | 0 V to V+ |
| Signal Direction | Bidirectional |
| Signal Type | Analog and digital |
| Automotive Qualification | AEC-Q100 (Q1) |
| 패키지 | TSSOP-16 (PW) |
| 실장 유형 | Surface Mount |
| Switching Configuration | Break-before-make |
| Control Logic | TTL/CMOS compatible select inputs |
| RoHS 상태 | Compliant |
| 브랜드 | Texas Instruments |
| Application | Analog/digital signal multiplexing |
TS3A5018QPWRQ1 핀 구성
| 핀 1 | 1NO — Switch 1 normally-open terminal |
| 핀 2 | 1COM — Switch 1 common terminal |
| 핀 3 | 1NC — Switch 1 normally-closed terminal |
| 핀 4 | 2NO — Switch 2 normally-open terminal |
| 핀 5 | 2COM — Switch 2 common terminal |
| 핀 6 | 2NC — Switch 2 normally-closed terminal |
| 핀 7 | GND — Ground reference |
| 핀 8 | 3NO — Switch 3 normally-open terminal |
| 핀 9 | 3COM — Switch 3 common terminal |
| 핀 10 | 3NC — Switch 3 normally-closed terminal |
| 핀 11 | 4NO — Switch 4 normally-open terminal |
| 핀 12 | 4COM — Switch 4 common terminal |
| 핀 13 | 4NC — Switch 4 normally-closed terminal |
| 핀 14 | S — Select control input |
| 핀 15 | [DATA_NEEDED: pin 15 name] — Verify against TI datasheet pin diagram |
| 핀 16 | V+ — Power supply, 1.8V to 3.6V |
일반적인 애플리케이션
TS3A5018QPWRQ1 적합 용도: 6 애플리케이션s: Automotive Infotainment Audio Routing, Battery Management Cell Monitoring, Portable Audio Headphone/Microphone Switching, Test and Measurement Signal Routing, Industrial Control I/O Expansion, Medical Portable Diagnostic Devices.
Automotive Infotainment Audio Routing
The TS3A5018QPWRQ1's AEC-Q100 qualification and 10-ohm RON make it well suited for switching audio signals between head-unit sources, AUX inputs, and microphone paths in automotive infotainment. Four independent SPDT switches allow a codec input to be shared between an external AUX jack and an internal microphone, with 10-ohm insertion resistance adding negligible attenuation to low-impedance line-level audio. Operating from a 3.3V rail common in automotive modules, the bidirectional 0V-to-V+ signal handling accommodates AC-coupled audio. Break-before-make switching prevents audible clicks from momentary source shorts during source changes.
추천
Battery Management Cell Monitoring
In battery-management systems, the TS3A5018QPWRQ1 multiplexes multiple cell-voltage sense points into a single ADC input, reducing ADC channel count and cost. Its 1.8V to 3.6V supply matches typical cell-monitoring front-end rails, and the 10-ohm RON introduces only millivolt-level errors with high-impedance sense resistors. The Q1 automotive grade supports 12V/48V automotive battery packs used in EVs and HEVs. Signals up to V+ pass bidirectionally, simplifying balancing-current measurement paths. Place the switch close to the ADC and guard the switching node to minimize leakage-induced errors.
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Portable Audio Headphone/Microphone Switching
Battery-powered headsets and portable recorders use the TS3A5018QPWRQ1 to route a shared 3.5mm jack between headphone output and microphone input modes. The 1.8V low end of the supply range supports single-cell Li-Ion down-conversion rails, extending battery life, while 10-ohm RON keeps drive impedance low for 16-ohm to 32-ohm headphones. Bidirectional switching supports CTIA/OMTP headset-detection schemes where the jack pins change roles. Break-before-make action prevents pops when reconfiguring the audio path, and the compact TSSOP-16 fits space-constrained portable boards.
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Test and Measurement Signal Routing
Bench instruments and automated test equipment use the TS3A5018QPWRQ1 to switch test signals between DUT channels and measurement front ends. The 10-ohm RON preserves signal amplitude for low-frequency analog measurements, and bidirectional transmission up to V+ allows the same switch bank to feed stimulus in and route responses out. Operating from 3.3V logic rails simplifies integration with controller GPIO for select-line control. Note the 0V-to-V+ signal limitation: level-shift or AC-couple any signal outside the supply window before routing it through the switch.
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Industrial Control I/O Expansion
PLC and factory-automation I/O modules use the TS3A5018QPWRQ1 to share a single measurement or actuation resource across several field signals, cutting component count and board area. Its 1.8V to 3.6V operation integrates directly with 3.3V microcontroller rails common in industrial controllers, and the four SPDT channels provide four-way 2:1 selection per device with simple select-pin control. The 10-ohm RON suits low-frequency sensor signals such as 4-20mA-derived voltages and thermocouple front ends when used with proper scaling. Multiple devices cascade under MCU control to scale channel counts modularly.
추천
Medical Portable Diagnostic Devices
Portable medical monitors use the TS3A5018QPWRQ1 to multiplex biopotential or sensor signals into shared amplifier and ADC chains, minimizing channel count in battery-operated designs. The low 1.8V supply capability helps meet strict power budgets in wearable and handheld diagnostics, and 10-ohm RON adds negligible error to buffered physiological signals. Bidirectional routing supports calibration-reference switching, where the same front end alternates between patient inputs and a precision reference. AC-couple inputs and maintain high switch-node impedance discipline to preserve signal integrity in these noise-sensitive applications.
추천
추천 제품 요약
엔지니어링 참조 데이터: TS3A5018QPWRQ1 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TS3A5018PWR | TS3A5018RSVR | SN74LVC4066A |
|---|---|---|---|---|
| Package | TSSOP-16 (PW) | TSSOP-16 (PW) - same | UQFN-16 (RSV) - different | TSSOP-14 - different |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices (Maxim Integrated) |
| Configuration | Quad SPDT (2:1) | Quad SPDT (2:1) | Quad SPDT (2:1) | Quad SPST |
| Automotive Grade | Yes (AEC-Q100 Q1) | No | No | No |
| Signal Direction | Bidirectional up to V+ | Bidirectional up to V+ | Bidirectional up to V+ | Bidirectional |
주요 차별점
- AEC-Q100 automotive qualification (vs TS3A5018PWR)
- True quad SPDT in a compact TSSOP-16 (vs SN74LVC4066A)
- Low-voltage 1.8V operation (vs MAX4544)
설계 노트
Decouple V+ with a 0.1uF ceramic capacitor placed within 2mm of pin 16, plus a 1uF bulk capacitor per device group. The TS3A5018QPWRQ1 draws minimal quiescent current, but switching transients on select lines can couple supply droop into the analog signal path if decoupling is poor. Keep the analog signal amplitude strictly within 0V to V+; signals beyond this window forward-bias the internal ESD structures and cause distortion or damage.
With 10-ohm RON, insertion loss matters when source impedance is low: driving a 10-ohm switch into a high-impedance load adds negligible error, but series RON with downstream low-impedance loads forms a divider. For audio paths, keep the load impedance at least 100x RON. Route switched analog traces away from fast digital select lines and use ground pour between the select inputs and the signal terminals to reduce charge injection coupling.
A common mistake is assuming the Q1 and standard TS3A5018 parts differ electrically - they do not; only qualification level differs, so do not pay the Q1 premium in non-automotive designs. Also, never leave select (S) inputs floating; tie them through a pull-up or pull-down so switch state is defined during power-up. Verify the unused NO/NC terminals are grounded or tied to a defined potential to avoid floating-node crosstalk between channels.
규정 준수 정보
Q1 suffix denotes AEC-Q100 automotive qualification per TI product documentation. RoHS/lead-free per TI current product portfolio; REACH and halogen-free declarations require TI quality documentation.
