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Diodes Incorporated PI3A2268ZMEX
- Part No.:
- PI3A2268ZMEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 10-UFQFN
- Datasheet:
-
PI3A2268ZMEX.pdf
- Description:
- IC SWITCH SPDTX2 750MOHM 10UQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,419
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Product details
Overview
PI3A2268ZMEX from Diodes Incorporated is a dual SPDT analog switch fabricated in CMOS technology, designed for low-distortion signal routing in portable audio/video and bus applications. It delivers 0.45 Ω on-resistance at 4.2 V, rail-to-rail signal handling (0 V to VDD), and break-before-make switching across –40°C to +85°C. Used in headset switching and power routing where low crosstalk and high off-isolation are critical.
For engineers reviewing the PI3A2268ZMEX datasheet, PI3A2268ZMEX pinout, PI3A2268ZMEX application, or PI3A2268ZMEX equivalent, key selection criteria include on-resistance flatness (≤0.26 Ω), channel crosstalk rejection (–108 dB @ 100 kHz), isolation (–83 dB @ 100 kHz), 10-pin UQFN package footprint, and 1.65 V to 4.2 V supply compatibility.
Technical Context
The PI3A2268ZMEX implements two independent SPDT switches with separate logic controls (IN1/IN2), each selecting between normally-open (NO) and normally-closed (NC) paths to a shared common (COM). Its CMOS architecture enables rail-to-rail analog signal switching without level-shifting constraints.
Break-before-make timing (8 ns typical at 4.2 V) ensures no momentary short between NO and NC terminals during state transitions. Dynamic performance includes 84 MHz 3dB bandwidth and <50 pC charge injection, supporting clean switching of audio and high-speed digital signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 0.45 Ω at VDD = 4.2 V - enables minimal voltage drop and power loss in signal path |
| Supply Voltage Range | 1.65 V to 4.2 V - supports single-supply operation from Li-ion battery down to 1.8 V logic rails |
| Off Isolation | –83 dB @ 100 kHz - suppresses leakage between disconnected channels in audio routing |
| Crosstalk Rejection | –108 dB @ 100 kHz - prevents audible interference between adjacent audio channels |
| Turn-On/Off Time | 13 ns / 12 ns at 4.2 V - supports fast multiplexing in USB 2.0 or I²S data paths |
| ESD Protection | 4 kV HBM - meets IEC 61000-4-2 Level 2 for handheld device front-end robustness |
| Operating Temperature | –40°C to +85°C - qualified for industrial and consumer portable equipment environments |
Pinout & Package
Package: 10-pin Ultra-thin Quad Flat No-Lead (UQFN), 1.4 mm × 1.8 mm, 0.4 mm pitch, ZM footprint per Diodes Inc. mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NO1 | Normally-open data port (Switch 1) | Connects to COM1 only when IN1 = HIGH; open-circuit otherwise |
| 2 NC2 | Normally-closed data port (Switch 2) | Connects to COM2 when IN2 = LOW; disconnects when IN2 = HIGH |
| 3 NO2 | Normally-open data port (Switch 2) | Connects to COM2 only when IN2 = HIGH; open-circuit otherwise |
| 4 GND | Ground reference | Return path for analog signals and digital control; must be low-impedance |
| 5 COM2 | Common output (Switch 2) | Shared signal node for NC2/NO2; connects to either based on IN2 logic state |
| 6 IN2 | Logic control input (Switch 2) | Active-HIGH control: HIGH selects NO2→COM2, LOW selects NC2→COM2 |
| 7 IN1 | Logic control input (Switch 1) | Active-HIGH control: HIGH selects NO1→COM1, LOW selects NC1→COM1 |
| 8 COM1 | Common output (Switch 1) | Shared signal node for NC1/NO1; connects to either based on IN1 logic state |
| 9 VDD | Positive power supply | Supplies bias for internal CMOS switch transistors; decoupling capacitor required |
| 10 NC1 | Normally-closed data port (Switch 1) | Connects to COM1 when IN1 = LOW; disconnects when IN1 = HIGH |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal range | Supports full 0 V to VDD signal swing without clipping or distortion |
| Break-before-make switching | Guarantees ≥8 ns dead time between NC and NO connection to prevent signal shorting |
| Low on-resistance flatness | ≤0.26 Ω variation over signal range - preserves amplitude fidelity in audio paths |
| Ultra-low charge injection | 50 pC max at 4.2 V - minimizes glitch-induced pop/click in headset switching |
| High off-isolation & crosstalk rejection | –83 dB COM–NC/NO isolation and –108 dB inter-channel crosstalk at 100 kHz |
Applications
| Headset Audio Routing | USB Data Line Multiplexing |
|---|---|
Use Scenario: Switching between mono headset and stereo speaker output in smartphones. IC Role / Device Role / Timing Role: Dual SPDT analog switch routing left/right audio channels and microphone path. Use Value: 0.45 Ω RON and –108 dB crosstalk ensure undistorted stereo separation and zero audible switching artifacts. |
Use Scenario: Sharing USB 2.0 D+/D– lines between host controller and peripheral IC in compact modules. IC Role / Device Role / Timing Role: Low-capacitance (20 pF off-state), fast-switching (13 ns tON) analog multiplexer. Use Value: 84 MHz bandwidth and <50 pC charge injection maintain signal integrity up to 480 Mbps without eye diagram degradation. |
| Portable Instrument Signal Path Selection | Power Source Routing in Wearables |
Use Scenario: Selecting between internal ADC reference and external sensor signal in handheld multimeters. IC Role / Device Role / Timing Role: Precision analog switch with matched on-resistance (ΔRON ≤ 0.23 Ω) and low leakage (<1 μA). Use Value: On-resistance flatness ≤0.26 Ω and rail-to-rail operation preserve measurement accuracy across full input range. |
Use Scenario: Dynamically routing power from battery or USB charger to system rails in smartwatches. IC Role / Device Role / Timing Role: Low-RON (0.45 Ω) SPDT switch enabling efficient power path management. Use Value: 300 mA continuous current rating and –40°C to +85°C operation support reliable battery charging handoff. |
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 |
|---|---|---|---|
| TSM1022YFPR | Higher RON (0.8 Ω typ), wider VDD (1.65–5.5 V), lower ESD (2 kV HBM) | Better suited for 5 V systems; less optimal for low-voltage audio due to higher on-resistance | Select when operating above 4.2 V or requiring extended voltage margin |
| MAX4688EUB+ | Lower crosstalk (–115 dB), but larger 10-pin µMAX package; higher cost | Preferred for high-fidelity audio test equipment where PCB area is secondary to signal purity | Choose when ultra-low crosstalk outweighs size and cost constraints |
Compared with TSM1022YFPR and MAX4688EUB+, the PI3A2268ZMEX offers superior on-resistance (0.45 Ω) and smallest footprint (1.4 × 1.8 mm), making it optimal for space-constrained portable devices requiring low-distortion switching below 4.2 V.
Availability
PI3A2268ZMEX is available at Aetrix Electronics and suitable for headset audio routing, USB 2.0 multiplexing, and portable instrumentation requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for PI3A2268ZMEX 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance, energy-efficient components for consumer, computing, and industrial markets.
The PI3A2268ZMEX belongs to Diodes' analog switch product line, engineered specifically for low-RON, low-distortion signal routing in battery-powered portable electronics.
FAQ
What is the maximum signal frequency supported by the PI3A2268ZMEX?
The PI3A2268ZMEX has a 3dB bandwidth of 84 MHz at VDD = 4.2 V, verified under 1.5 V bias and 0 dBm input conditions. This supports clean switching of USB 2.0 (480 Mbps), I²S, and composite video signals without significant attenuation or phase shift.
Can the PI3A2268ZMEX operate from a 1.8 V supply?
Yes - the PI3A2268ZMEX is fully specified from 1.65 V to 4.2 V. At 1.8 V, on-resistance increases to ≤1.2 Ω (typical), and switching times extend to ~25 ns, while maintaining rail-to-rail signal handling and break-before-make functionality.
Is external pull-up or pull-down required on IN1/IN2 control pins?
No - the PI3A2268ZMEX features CMOS-compatible inputs with VIH = 1.2 V (min) and VIL = 0.5 V (max) across temperature. Control pins must be driven actively HIGH or LOW; floating inputs are prohibited and may cause undefined switching behavior.
How does the PI3A2268ZMEX handle unused NO/NC pins?
Per Diodes' datasheet Figure 1 note, unused NO or NC pins must be grounded to minimize off-capacitance and prevent noise coupling. Leaving them floating increases crosstalk and degrades isolation performance, especially at high frequencies.
PI3A2268ZMEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 750mOhm
- Channel-to-Channel Matching (ΔRon):
- 50mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 4.2V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 13ns, 12ns
- -3db Bandwidth:
- 84MHz
- Charge Injection:
- 50pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF
- Current - Leakage (IS(off)) (Max):
- 1µA
- Crosstalk:
- -110dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-UQFN (1.4x1.8)
PI3A2268ZMEX FAQ
1.How can I place an order for PI3A2268ZMEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3A2268ZMEX 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 PI3A2268ZMEX reliable?
The price and inventory of PI3A2268ZMEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3A2268ZMEX is usually 5 days.
3.What payment methods are accepted for PI3A2268ZMEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3A2268ZMEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3A2268ZMEX?
PI3A2268ZMEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3A2268ZMEX 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 PI3A2268ZMEX?
For technical support, including PI3A2268ZMEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3A2268ZMEX requirements.
6.How does Aetrix verify that PI3A2268ZMEX is sourced from the original manufacturer or authorized distributors?
All PI3A2268ZMEX 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 PI3A2268ZMEX meets industry standards.
7.What is the process for return or replacement of PI3A2268ZMEX?
All PI3A2268ZMEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3A2268ZMEX, 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 PI3A2268ZMEX part is unused and in its original packaging.
Return procedure for PI3A2268ZMEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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