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Analog Devices Inc./Maxim Integrated MAX14505EWC+T
- Part No.:
- MAX14505EWC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFBGA, WLBGA
- Datasheet:
-
MAX14505EWC+T.pdf
- Description:
- IC SWITCH SPDT X 2 500MOHM 12WLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,557
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Product details
Overview
MAX14505EWC+T from Maxim Integrated is a dual SPDT analog switch optimized for audio signal routing in portable devices, supporting distortion-free ±VCC signal swing (–VCC to +VCC), 0.36Ω typical on-resistance, and integrated shunt switches on both NO1/NO2 terminals to suppress click-and-pop during speaker switching in MP3 players and cell phones.
For engineers reviewing the MAX14505EWC+T datasheet, MAX14505EWC+T pinout, MAX14505EWC+T application, or MAX14505EWC+T equivalent, this device delivers verified negative-rail capability, sub-1mΩ on-resistance flatness, EN-controlled high-Z mode, and WLP package compatibility for space-constrained audio subsystems requiring low THD+N (0.001%) and high off-isolation (–84dB at 20kHz).
Technical Context
The MAX14505EWC+T implements a CMOS-based dual SPDT architecture with independent control via CB input and global enable via active-high EN. Its internal negative charge pump (VNEG) generates –0.95×VCC to support true bipolar signal handling without external rails.
It features bidirectional analog paths, ±550mA continuous current per channel, and shunt switches tied exclusively to NO1/NO2 - not NC1/NC2 - enabling automatic discharge of AC-coupling capacitors during state transitions to eliminate audible transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | –VCC to +VCC (EN = VCC); enables full-swing audio signals without clipping or distortion in single-supply systems |
| On-Resistance (RON) | 0.36Ω typ (VCC = 3.0V, 50mA); ensures minimal insertion loss and thermal drift across audio band |
| On-Resistance Flatness | 1mΩ typ; maintains consistent gain and frequency response over full signal range (–VCC to +VCC) |
| THD+N | 0.001% (20Hz–20kHz); meets high-fidelity audio requirements for portable playback equipment |
| Off-Isolation | –84dB at 20kHz; prevents crosstalk between active and inactive audio paths in multi-source routing |
| Supply Voltage Range | +2.3V to +5.5V; supports Li-ion battery operation (3.0V–4.2V) and USB-powered designs |
| Shutdown Current | Not specified for MAX14505EWC+T (only MAX14505A/MAX14506 guarantee ≤0.2µA); MAX14505EWC+T ICC_SHDN not characterized |
Pinout & Package
MAX14505EWC+T uses a 1.56mm × 2.14mm, 12-bump Wafer-Level Package (WLP) with bumps on bottom. Pin mapping is validated per Maxim's official pin description and top-view diagram (Rev 1, 12/08).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | NO2 | Analog Switch 2 Normally Open terminal; connects to COM2 when CB = 0, discharges via internal shunt when unconnected |
| A2 | NEG | Negative charge-pump output; must be connected to GND via 3.3nF capacitor - not for external power use |
| A3 | VCC | +2.3V to +5.5V supply input; requires local 0.1µF ceramic bypass to GND for stable audio performance |
| A4 | NO1 | Analog Switch 1 Normally Open terminal; includes dedicated shunt switch for click/pop suppression |
| B1 | COM2 | Common terminal for Switch 2; bidirectional I/O path shared with NO2/NC2 |
| B2 | EN | Active-high enable; drives all switches into high-impedance state when high (no effect on shunt switch operation) |
| B3, C3 | GND | Dual ground connections; mandatory for low-noise audio routing and ESD robustness |
| B4 | COM1 | Common terminal for Switch 1; bidirectional I/O path shared with NO1/NC1 |
| C1 | NC2 | Analog Switch 2 Normally Closed terminal; connects to COM2 when CB = 1 |
| C2 | CB | Control Bit input; selects COM-to-NO (CB = 0) or COM-to-NC (CB = 1) for both switches simultaneously |
| C4 | NC1 | Analog Switch 1 Normally Closed terminal; connects to COM1 when CB = 1 |
Key Features
| Feature | Design Value |
|---|---|
| ±VCC signal throughput | Enables distortion-free routing of AC-coupled audio signals spanning full rail-to-rail range without external negative supply |
| Integrated NO1/NO2 shunt switches | Automatically discharges precharged coupling capacitors to eliminate audible click/pop during source switching in speaker paths |
| 0.36Ω on-resistance (typ) | Minimizes voltage drop and thermal noise in high-current audio paths (e.g., driving 16Ω speakers at 550mA) |
| 1mΩ on-resistance flatness | Preserves linearity and harmonic integrity across entire audio bandwidth (20Hz–20kHz) and signal amplitude range |
| High-impedance COM mode (EN = high) | Allows safe hot-swapping of audio sources or amplifier outputs without signal contention or latch-up risk |
Applications
| Cell Phone Audio Routing | MP3 Player Speaker Switching |
|---|---|
|
Use Scenario: Switching between earpiece, loudspeaker, and headset outputs in a single-chip audio subsystem. IC Role / Device Role / Timing Role: Dual SPDT analog switch managing bidirectional audio paths under CB/EN control with sub-60ns turn-off time. Use Value: Eliminates mechanical relays; enables silent switching between precharged audio nodes using internal shunt discharge on NO1/NO2. |
Use Scenario: Selecting between stereo headphone output and mono loudspeaker output in portable media players. IC Role / Device Role / Timing Role: Low-RON audio switch providing ±VCC signal pass-through and high off-isolation (>84dB) to prevent channel bleed. Use Value: Maintains THD+N < 0.001% across full volume range while supporting Li-ion battery supply (3.0V–4.2V). |
| Portable Bluetooth Speaker Input Multiplexing | USB-C Audio Adapter Signal Path Control |
|
Use Scenario: Routing analog audio from multiple sources (AUX-in, BT baseband, DAC) to a Class-D amplifier input. IC Role / Device Role / Timing Role: Dual SPDT switch with common COM terminals acting as signal combiner/multiplexer under microcontroller GPIO control. Use Value: Leverages 0.36Ω RON and 125pF COM-on capacitance to preserve signal integrity up to 100kHz without added buffering. |
Use Scenario: Managing analog audio path selection in USB-C dongles supporting simultaneous headset + mic functionality. IC Role / Device Role / Timing Role: High-Z isolation switch enabling EN-controlled mute/disconnect of unused paths during plug detection events. Use Value: Prevents pop noise during USB-C accessory insertion/removal via coordinated EN assertion and shunt activation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT audio switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14504EWC+ | No internal shunt switches on NO1/NO2; lacks click/pop suppression; same ±VCC signal range and 0.36Ω RON | Suitable where silent switching is not required; lower cost but requires external discharge circuitry for pop mitigation | Select MAX14504EWC+ only if system-level click/pop is managed externally and BOM cost is prioritized over acoustic performance |
| MAX14505AEWC+ | Shunt switches present, but analog signal range limited to 0 to +VCC (not ±VCC); 0.15µA shutdown current spec | Applicable in DC-biased audio paths (e.g., DirectDrive® amplifiers) where negative swing is unnecessary | Choose MAX14505AEWC+ when interfacing with zero-centered amplifiers and ultra-low standby power is critical |
Compared with MAX14505EWC+T, MAX14504EWC+ sacrifices click/pop suppression for cost savings and identical rail-to-rail capability, while MAX14505AEWC+ trades ±VCC support for guaranteed sub-0.2µA shutdown current - making MAX14505EWC+T the sole option delivering both true bipolar audio routing and integrated pop suppression.
Availability
MAX14505EWC+T is available at Aetrix Electronics and suitable for cell phone audio routing, MP3 player speaker switching, and portable Bluetooth speaker input multiplexing requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX14505EWC+T 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and RF ICs for industrial, communications, and consumer applications.
The MAX14505EWC+T belongs to Maxim's audio analog switch product line, designed specifically for low-distortion, high-current signal routing in battery-powered portable audio equipment with stringent acoustic and space constraints.
FAQ
What is the maximum continuous current rating for MAX14505EWC+T?
The MAX14505EWC+T supports ±550mA continuous current per channel (NO_, NC_, COM_) and ±850mA pulsed current (1ms, 10% duty cycle). This rating applies across the full operating temperature range (–40°C to +85°C) and enables direct drive of low-impedance speakers without external buffering. Exceeding these limits risks thermal damage or parametric shift.
Does MAX14505EWC+T require an external negative supply?
No, the MAX14505EWC+T does not require an external negative supply. It integrates an internal charge pump that generates VNEG ≈ –0.95×VCC, enabling distortion-free signal passage from –VCC to +VCC using only a single +2.3V to +5.5V positive supply. The NEG pin must be connected to GND via a 3.3nF capacitor - no external voltage source is needed or permitted.
How does the shunt switch in MAX14505EWC+T reduce click-and-pop noise?
The MAX14505EWC+T includes dedicated shunt switches on NO1 and NO2 terminals that automatically discharge AC-coupling capacitors when those terminals are disconnected from COM1/COM2. This eliminates residual DC voltage steps that cause audible transients during audio source switching - a key feature distinguishing it from MAX14504EWC+ and MAX14506EWC+.
What is the on-resistance flatness specification for MAX14505EWC+T?
The MAX14505EWC+T has 1mΩ typical on-resistance flatness (RFLAT(ON)), defined as the difference between maximum and minimum RON over the full analog signal range (–VCC to +VCC). This tight flatness ensures consistent gain, minimal harmonic distortion, and predictable frequency response across the entire audio band - critical for high-fidelity portable playback.
Can MAX14505EWC+T be used with a 1.8V logic interface?
Yes, the MAX14505EWC+T logic inputs (CB and EN) accept voltages up to +5.5V regardless of VCC level, allowing direct interfacing with 1.8V GPIOs. VIH is specified at 1.4V min and VIL at 0.5V max, ensuring reliable recognition of 1.8V logic highs and lows even when VCC = 2.3V. No level-shifting circuitry is required.
MAX14505EWC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 500mOhm
- Channel-to-Channel Matching (ΔRon):
- 10mOhm
- Voltage - Supply, Single (V+):
- 2.3V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 60ms, 3µs
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 65pF
- Current - Leakage (IS(off)) (Max):
- 50nA
- Crosstalk:
- -90dB @ 20kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WLP (2.14x1.56)
MAX14505EWC+T FAQ
1.How can I place an order for MAX14505EWC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14505EWC+T 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 MAX14505EWC+T reliable?
The price and inventory of MAX14505EWC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14505EWC+T is usually 5 days.
3.What payment methods are accepted for MAX14505EWC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14505EWC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14505EWC+T?
MAX14505EWC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14505EWC+T 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 MAX14505EWC+T?
For technical support, including MAX14505EWC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14505EWC+T requirements.
6.How does Aetrix verify that MAX14505EWC+T is sourced from the original manufacturer or authorized distributors?
All MAX14505EWC+T 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 MAX14505EWC+T meets industry standards.
7.What is the process for return or replacement of MAX14505EWC+T?
All MAX14505EWC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14505EWC+T, 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 MAX14505EWC+T part is unused and in its original packaging.
Return procedure for MAX14505EWC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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