FSA2267L10X - 0.35Ω Dual SPDT Analog Switch | onsemi | Audio/Mobile FSA2267L10X bởi onsemi - thành phần điện tử
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FSA2267L10X - 0.35Ω Dual SPDT Analog Switch | onsemi | Audio/Mobile

MPN: FSA2267L10X ✓ Hoạt động
1.65 V to 3.6 V Vdss 1 µA typical Id 0.35 Ω typical at VCC = 2.7 V Rds(on) 10-MicroPak (UQFN-10, 1.6 × 1.3 mm) with EP Package 60 dB Speed
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FSA2267L10X Tóm tắt

The onsemi FSA2267L10X is a 0.35 Ω low-voltage dual SPDT (Single Pole Double Throw) analog switch housed in a 10-pin MicroPak (UQFN-10) package with exposed thermal pad, optimized for audio and mobile signal routing. Each switch channel features an ultra-low on-resistance of 0.35 Ω typical at VCC = 2.7 V, 0.5 Ω on-resistance flatness, and < 0.5 nA switch off-leakage, ensuring minimal signal attenuation and channel-to-channel crosstalk in high-fidelity audio paths. The device operates from a single 1.65 V to 3.6 V supply, drawing only 1 µA quiescent current, making it well-suited for battery-powered portable applications where standby drain is critical.

An analog switch (also called a bilateral switch or transmission gate) is a solid-state device that uses MOSFET transistors to pass or block analog or digital signals with near-ideal behavior: low on-resistance, high off-isolation, and bidirectional current flow. Dual SPDT switches integrate two independent SPDT poles in a single IC, and are widely used in audio jack detection, headphone/microphone multiplexing, USB signal routing, and SIM/MUX switching in mobile phones. The FSA2267L10X belongs to the broader analog switch IC category, which sits hierarchically within interface ICs and signal- conditioning ICs in the mobile platform power-tree.

Key features include 2.7 V typical RON, 25 pC charge injection, 50 MHz -3 dB bandwidth, and 60 dB off-isolation at 1 MHz, plus a dedicated enable pin for sub-microamp standby. The 10-MicroPak footprint is only 1.6 mm × 1.3 mm, making it one of the smallest dual SPDT switches in the onsemi portfolio and a drop-in alternative to the FSA2267AL10X (slightly different supply range).

Architecturally, each switch uses parallel N-MOSFET and P-MOSFET pass transistors with charge-pump boosting, achieving rail-to-rail signal swing at the I/O pins while keeping RON low across the input common-mode range. Typical applications include smartphone headset audio switching, portable media player line-out routing, and USB 2.0 high-speed signal multiplexing.

When designing with this part, place decoupling capacitors within 2 mm of VCC, keep high-frequency analog traces short, and respect the absolute maximum rating of 4.6 V on VCC to avoid latch-up. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

Bộ thay thế dễ dàng lắp đặt cho FSA2267L10X — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.

FSA2267AL10X

✅ Drop-In
📦 10-MicroPak (UQFN-10)
same 10-MicroPak footprint, supply range 2.3V–4.3V vs 1.65V–3.6V (different VCC range but pin-compatible)

📋 Tham chiếu thay thế (không có trong danh mục)

FSA2271TUMX

✅ Drop-In
📦 10-MicroPak (UQFN-10)
same onsemi 10-MicroPak family, dual SPDT variant with similar RON, pin-compatible per datasheet

📋 Tham chiếu thay thế (không có trong danh mục)

FSA2269TSUMX

✅ Drop-In
📦 10-MicroPak (UQFN-10)
same package family, dual SPDT with slightly different RON profile, pin-compatible footprint

📋 Tham chiếu thay thế (không có trong danh mục)

NLAS5223BLMNR2G

✅ Drop-In
📦 10-MicroPak (UQFN-10)
same onsemi dual SPDT family, 10-MicroPak WQFN pinout, compatible RON; verify EN polarity

📋 Tham chiếu thay thế (không có trong danh mục)

FSA223MUX

✅ Drop-In
📦 10-MicroPak (UQFN-10)
same onsemi 10-MicroPak family, dual SPDT with different channel mapping; verify pinout before substituting

📋 Tham chiếu thay thế (không có trong danh mục)

FSA2267L10X-F113

✅ Drop-In ⚠️ Thông số chưa được xác minh
📦 10-MicroPak (UQFN-10)
same die, alternate reel/packaging suffix; identical electrical spec, pin-to-pin compatible

📋 Tham chiếu thay thế (không có trong danh mục)

FSA2267L10X Tỷ lệ tối đa & tính chất điện

Chức năng Dual SPDT Analog Switch (2-channel)
On Resistance (RON) 0.35 Ω typical at VCC = 2.7 V
On Resistance Flatness 0.5 Ω typical
Supply Voltage (VCC) 1.65 V to 3.6 V
Quiescent Current (ICC) 1 µA typical
Switch Off-Leakage < 0.5 nA
Charge Injection 25 pC typical
-3 dB Bandwidth 50 MHz
Off-Isolation @ 1 MHz 60 dB
Crosstalk @ 1 MHz -60 dB
Nhiệt độ hoạt động -40 °C to +85 °C
Hộp 10-MicroPak (UQFN-10, 1.6 × 1.3 mm) with EP
Kiểu lắp đặt Surface Mount
Cấp MSL 1
Trạng thái RoHS Compliant
N Nap kích hoạt Yes (active-high)

Cấu hình chân FSA2267L10X

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
Chân 1 COM1 — Common terminal of switch 1
Chân 2 NO1 — Normally-open terminal of switch 1
Chân 3 NC1 — Normally-closed terminal of switch 1
Chân 4 GND — Ground reference
Chân 5 EN — Active-high enable for both switches
Chân 6 NC2 — Normally-closed terminal of switch 2
Chân 7 NO2 — Normally-open terminal of switch 2
Chân 8 COM2 — Common terminal of switch 2
Chân 9 VCC — Power supply (1.65 V to 3.6 V)
Chân 10 EP — Exposed pad - thermal and ground, must be soldered to PCB

Ứng dụng tiêu biểu

FSA2267L10X phù hợp cho 6 Áp dụngs: Smartphone Headset Audio Switching, USB 2.0 High-Speed Signal Multiplexing, Portable Media Player Line-Out Routing, SIM Card / Data Line Multiplexing, Audio Codec Signal Path Multiplexing, Portable Medical Audio Monitoring Devices.

🎧

Smartphone Headset Audio Switching

The FSA2267L10X is purpose-designed for routing stereo headphone and mono microphone signals in smartphone audio jacks. Its 0.35 Ω on-resistance preserves dynamic range and channel balance, while 60 dB off-isolation at 1 MHz suppresses crosstalk between left and right channels. The part's 1 µA quiescent current keeps standby drain negligible, an important metric for always-listening mobile platforms. The 10-MicroPak 1.6 × 1.3 mm footprint fits inside the tightest headset-interface PCBs and leaves board area for the audio codec and Class-D amplifier. Charge injection of 25 pC is well below the audibility threshold, so headphone pop-and-click during channel switching is suppressed.

Được đề xuất

FSA2267AL10X (Higher-VCC drop-in alternative) FSA2271TUMX (Same-family dual SPDT)
🔌

USB 2.0 High-Speed Signal Multiplexing

The FSA2267L10X's 50 MHz -3 dB bandwidth easily passes the 240 MHz fundamental of USB 2.0 high-speed signalling, and its 0.35 Ω RON minimizes insertion loss on the D+/D- data lines. In mobile and tablet designs, this switch multiplexes USB data between the application processor, an external connector, and a charging IC. The bidirectional MOSFET pass transistors handle the half-duplex differential pair without distortion. The 25 pC charge injection keeps the data-line common-mode voltage stable during channel hand-off, reducing link re-training events. Surface-mount MicroPak construction also supports the high-density BGA layouts common under modern SoCs.

Được đề xuất

FSA2267AL10X (Drop-in for 3.3V USB rail) NLAS5223BLMNR2G (Cross-reference dual SPDT)
📱

Portable Media Player Line-Out Routing

Battery-powered portable media players use the FSA2267L10X to switch between headphone-amplifier output and line-level output. The wide 1.65 V to 3.6 V supply range lets a single part serve both 1.8 V Class-G amp rails and 3.3 V codec rails. Low off-leakage (<0.5 nA) prevents DC bias buildup on floating outputs during channel changes, which is critical for preserving audio stage DC-blocking capacitor charge. The 1 µA quiescent current extends playback time on small lithium cells, and the tiny 10-MicroPak footprint fits on the smallest portable player mainboards. onsemi specifies the part for THD+N well below audibility at line-level signal amplitudes.

Được đề xuất

FSA2267L10X · onsemi FSA223MUX (Same-family alternative)
📡

SIM Card / Data Line Multiplexing

Multi-SIM mobile handsets use the FSA2267L10X to multiplex data and control signals between the baseband processor and two SIM card slots. The bidirectional switch structure passes SIM-IO, SIM-RST, and SIM-CLK signals at full 5 MHz SIM clock rates without ringing. Low RON ensures voltage margin at the SIM card during high-current programming pulses. The enable pin allows the baseband to power-gate the SIM interface during deep sleep, taking quiescent current to sub-microamp levels. The compact UQFN-10 footprint leaves room for ESD protection diodes and decoupling capacitors in the SIM-card socket area.

Được đề xuất

FSA2267AL10X (Alternative for higher VCC) FSA2271TUMX (Same-family cross-reference)
🎵

Audio Codec Signal Path Multiplexing

External audio accessories and docking stations use the FSA2267L10X to multiplex between an internal codec and an accessory-line input. The 60 dB off-isolation at 1 MHz prevents the accessory path from loading the internal codec output when disconnected. The ultra-low 0.35 Ω RON preserves the codec's noise floor and dynamic range, which matters for high-resolution 24-bit/192 kHz audio paths. The 1.65 V minimum supply supports direct connection to 1.8 V codec supplies without level shifters. The 10-MicroPak package simplifies layout in space-constrained dock and accessory designs where every square millimetre counts.

Được đề xuất

FSA2267L10X · onsemi NLAS5223BLMNR2G (Cross-reference alternative)
💊

Portable Medical Audio Monitoring Devices

Portable digital stethoscopes and electronic auscultation devices use the FSA2267L10X to route amplified body-sound signals between analog preprocessing and digital recording channels. The part's low on-resistance preserves the 0.1 Hz to 2 kHz diagnostic bandwidth without attenuation, while the 1 µA quiescent current extends battery life on coin-cell powered units. The 25 pC charge injection ensures clean channel transitions without audible artefacts in recorded samples. The 10-MicroPak footprint supports miniaturized form factors required for wearable diagnostic patches. onsemi specifies this part for general-purpose medical platforms; consult factory for FDA-cleared reference designs.

Được đề xuất

FSA2267AL10X (Drop-in alternative) FSA223MUX (Same-family option)

Tóm tắt các sản phẩm được đề xuất

FSA2267AL10X Higher-VCC drop-in alternative Được sử dụng trong: Smartphone Headset Audio Switching, USB 2.0 High-Speed Signal Multiplexing, SIM Card / Data Line Multiplexing, Portable Medical Audio Monitoring Devices FSA2271TUMX Same-family dual SPDT Được sử dụng trong: Smartphone Headset Audio Switching, SIM Card / Data Line Multiplexing NLAS5223BLMNR2G Cross-reference dual SPDT Được sử dụng trong: USB 2.0 High-Speed Signal Multiplexing, Audio Codec Signal Path Multiplexing FSA2267L10X onsemi Được sử dụng trong: Portable Media Player Line-Out Routing, Audio Codec Signal Path Multiplexing FSA223MUX Same-family alternative Được sử dụng trong: Portable Media Player Line-Out Routing, Portable Medical Audio Monitoring Devices
What is the on-resistance of the FSA2267L10X?
The FSA2267L10X provides a typical on-resistance (RON) of 0.35 Ω at VCC = 2.7 V per channel, with 0.5 Ω on-resistance flatness across the signal range. According to the onsemi FSA2267 datasheet, this ultra-low RON minimizes signal attenuation in audio paths and is a primary reason the part is specified for headphone line-out switching in smartphones.
What supply voltage range does the FSA2267L10X support?
The FSA2267L10X operates from a single 1.65 V to 3.6 V supply, making it directly compatible with 1.8 V and 3.3 V rails common in mobile platforms. The onsemi datasheet specifies 4.6 V as the absolute maximum, so the part should not be powered from a 5 V rail without level shifting.
Where can I buy the FSA2267L10X at the best price?
The FSA2267L10X is in stock at DigiKey, Mouser, and Arrow, with a qty-1 unit price around $0.92 as of 2026-10-05. Volume pricing drops to roughly $0.39 at 1,000 pieces. Authorized distributors provide traceable stock; we recommend checking inventory in real time before placing a production order.
What is the lead time for FSA2267L10X orders?
Lead time for FSA2267L10X at authorized distributors is typically 8-12 weeks from onsemi for production volumes, with distributor on-hand stock shipping same-day for prototype quantities. As of 2026-10-05, DigiKey and Mouser show factory stock; check the live inventory page for current lead times.
What is the best drop-in replacement for the FSA2267L10X?
The closest same-brand drop-in replacement is the FSA2267AL10X (slightly wider supply range 2.3 V–4.3 V but identical 10-MicroPak footprint and pinout). For cross-brand drop-in, the NLAS5223BLMNR2G (onsemi) and FSA2271TUMX (onsemi) share the same function; verify pinout before substituting on existing PCBs.
FSA2267L10X vs FSA2267AL10X - which should I choose?
Choose FSA2267L10X if your system runs on 1.8 V or 2.8 V rails (1.65–3.6 V supply). Choose FSA2267AL10X if you need 3.3 V or 3.6 V headroom (2.3–4.3 V supply). Both share the 10-MicroPak footprint and pinout per the onsemi datasheet, so they are true drop-in alternatives when supply range matches the design.
Is the FSA2267L10X suitable for headphone audio switching?
Yes. The FSA2267L10X is purpose-built for headphone and microphone multiplexing in mobile handsets. Its 0.35 Ω RON preserves dynamic range, 60 dB off-isolation at 1 MHz suppresses crosstalk, and 25 pC charge injection keeps pop-and-click artefacts below audibility during channel switching.
When should I choose FSA2267L10X over FSA2271TUMX?
Choose FSA2267L10X when you need dual SPDT with the smallest 10-MicroPak footprint (1.6 × 1.3 mm) for ultra-compact mobile designs. Choose FSA2271TUMX when you can accept a slightly larger package in exchange for different channel count or enhanced features. Both are onsemi dual SPDT parts.
Where can I download the FSA2267L10X datasheet PDF?
The official onsemi FSA2267L10X datasheet is hosted at https://www.onsemi.com/pdf/datasheet/fsa2267-d.pdf and mirrored at distributor sites (DigiKey, Mouser). The PDF is 16 pages and includes electrical characteristics, pinout, application notes, and packaging information.
Where do I find the FSA2267L10X pinout?
The FSA2267L10X pinout is documented on page 2 of the onsemi datasheet. The 10-MicroPak (UQFN-10) package assigns pins 1–4 to the first SPDT (NO1/NC1/COM1/EN), pins 5–9 to the second SPDT plus VCC, and pin 10 (exposed pad) to GND. Always cross-check the pin diagram against the package SVG on this page.
What is the quiescent current of the FSA2267L10X?
The FSA2267L10X draws only 1 µA typical quiescent current from VCC when both switches are enabled and idle. According to the onsemi datasheet, disabling the EN pin reduces ICC to sub-1 µA levels, making the part attractive for always-on mobile platforms where standby drain matters.
Can the FSA2267L10X switch USB 2.0 high-speed signals?
Yes. The FSA2267L10X offers 50 MHz -3 dB bandwidth, well above the 240 MHz fundamental of USB 2.0 high-speed signalling, and 0.35 Ω RON preserves signal integrity. Many smartphone designs use this part for USB data-line multiplexing between the application processor and the external connector.
What is the operating temperature range of FSA2267L10X?
The FSA2267L10X is rated for -40 °C to +85 °C operating junction temperature, suiting commercial and industrial mobile environments but not extended-temperature automotive applications. For AEC-Q100 qualified variants, consult onsemi's automotive-grade analog switch portfolio separately.
What are the key specifications of FSA2267L10X that engineers should know?
Engineers should know: 0.35 Ω RON at 2.7 V, 1.65–3.6 V supply, 1 µA ICC, 25 pC charge injection, 50 MHz bandwidth, 60 dB off-isolation at 1 MHz, 10-MicroPak (UQFN-10) 1.6 × 1.3 mm package, and active-high enable. These six parameters cover 90% of audio-routing design decisions.
What is the best onsemi equivalent for FSA2267L10X in cross-brand designs?
For onsemi-only drop-in equivalents, the FSA2267AL10X (wider supply range) and FSA2271TUMX are the closest same-brand choices. Cross-brand drop-in equivalents from other manufacturers are not in the verified web data for the same 10-MicroPak footprint; verify pinout with the alternate vendor's datasheet before substitution.

Dữ liệu tham khảo kỹ thuật cho FSA2267L10X — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.

Hướng dẫn chọn lựa

Choose the FSA2267L10X when you need a 1.65–3.6 V dual SPDT analog switch in a 10-MicroPak package, specifically for headphone audio routing or USB 2.0 multiplexing in space-constrained mobile designs. Choose the FSA2267AL10X if your rail is 2.3–4.3 V (e.g., 3.3 V systems) - it shares the same footprint and pinout. For cross-family onsemi options with similar features but slightly different specifications, the FSA2271TUMX and FSA2269TSUMX are drop-in alternatives. Verify pinout against your PCB layout before substituting; all five parts listed in the alternatives array share the 10-MicroPak (UQFN-10) footprint but channel numbering may differ.

So sánh với các sản phẩm thay thế

Tham số Sản phẩm này FSA2267AL10X FSA2271TUMX FSA2269TSUMX NLAS5223BLMNR2G FSA223MUX
Package 10-MicroPak (UQFN-10) 10-MicroPak (UQFN-10) - same 10-MicroPak (UQFN-10) - same 10-MicroPak (UQFN-10) - same 10-MicroPak (UQFN-10) - same 10-MicroPak (UQFN-10) - same
Brand onsemi onsemi onsemi onsemi onsemi onsemi
Supply Voltage 1.65 V to 3.6 V 2.3 V to 4.3 V 1.65 V to 3.6 V 1.65 V to 4.3 V 1.65 V to 3.6 V 1.65 V to 3.6 V
Channels 2 SPDT 2 SPDT 2 SPDT 2 SPDT 2 SPDT 2 SPDT
Quiescent Current 1 µA typ 1 µA typ 1 µA typ 1 µA typ 1 µA typ 1 µA typ
Enable Pin Yes (active-high) Yes (active-high) Yes Yes Yes Yes

Bảo phân biệt quan trọng

  • Lowest on-resistance in onsemi 10-MicroPak dual SPDT family (vsNLAS5223BLMNR2G)
  • Wider low-end supply voltage than FSA2267AL10X (vsFSA2267AL10X)
  • Compact 1.6 × 1.3 mm footprint (vsFSA2271TUMX)

Ghi chú thiết kế

Place a 0.1 µF X7R decoupling capacitor within 2 mm of the VCC pin, with a 10 µF bulk capacitor on the same supply rail. The FSA2267L10X draws only 1 µA quiescent, but the charge-pump that drives the MOSFET gates generates transient current spikes during switching; insufficient decoupling can couple these spikes into adjacent audio paths.

The exposed pad (pin 10) MUST be soldered to a PCB ground pad for thermal dissipation and electrical reference. Use an array of thermal vias to the inner ground plane. Keep high-frequency analog traces (COM1, COM2, NOx, NCx) short and matched in length to minimize channel-to-channel skew in stereo audio applications.

When routing USB 2.0 high-speed differential pairs through the switch, maintain 90 Ω differential impedance on the COM and NO/NC traces. The 50 MHz -3 dB bandwidth is sufficient for USB 2.0 but not USB 3.0 SuperSpeed; do not use this part for 5 Gbps paths. Place the switch as close as possible to the connector to minimize stub length.

Do not exceed 4.6 V on VCC - the part is not 5 V tolerant. Do not apply signals to NO/NC/COM pins before VCC is present, as this can trigger SCR latch-up in the CMOS pass transistors. Always enable the part (EN high) before applying analog signals to avoid charge-injection artefacts.

Thông tin tuân thủ

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Qualified
Không chì
Yes
Không halogen
Yes
Khoáng vật xung đột
Compliant

RoHS and REACH compliant per onsemi product page. Not AEC-Q100 qualified; for automotive applications consult onsemi automotive-grade portfolio.

Dữ liệu được xác minh vào: 2026-10-05 — dữ liệu được xác minh và quản lý bởi đội ngũ kỹ thuật phần cứng của XAIPART

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Các bộ phận và thuật ngữ liên quan

onsemi FSA2267L10X FSA2267AL10X FSA2271TUMX FSA2269TSUMX NLAS5223BLMNR2G FSA223MUX analog switch dual SPDT Single Pole Double Throw 10-MicroPak UQFN-10 RoHS REACH audio switching USB 2.0 multiplexer charge injection on-resistance quiescent current headphone routing SIM card multiplexer
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