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Analog Devices Inc./Maxim Integrated MAX4992ELB+
- Part No.:
- MAX4992ELB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN
- Datasheet:
-
MAX4992ELB+.pdf
- Description:
- MAX4992 DUAL-SPDT ANALOG SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:2,575
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Product details
Overview
The MAX4992ELB+ from Maxim Integrated is a dual single-pole/double-throw (SPDT) analog switch optimized for high-fidelity audio routing in portable devices, featuring 0.3Ω typical on-resistance, 0.004% THD+N, and 1.2µA typical supply current at +3V. It operates from a single +1.8V to +5.5V supply and is designed for speaker/headset source switching where low distortion and minimal power consumption are critical.
For engineers reviewing the MAX4992ELB+ datasheet, MAX4992ELB+ pinout, MAX4992ELB+ application, or MAX4992ELB+ equivalent, this device is selected for compact audio signal routing requiring low RON flatness (1mΩ), fast turn-off (≤2µs), and no slow-turn-on feature-distinguishing it from the MAX4991/MAX4993 variants.
Technical Context
The MAX4992ELB+ implements break-before-make switching with bidirectional analog signal paths across two independent SPDT channels. Its digital control uses rail-to-rail compatible CB1 and CB2 inputs, each directly selecting NO1/NC1 and NO2/NC2 states without enable logic or internal pull-ups.
Unlike the MAX4993/MAX4994, it lacks an active-low EN pin and slow turn-on circuitry-enabling microsecond-scale switching (tOFF = 0.5–2µs) while maintaining 80dB PSRR and ±100nA off-leakage over –40°C to +85°C. All analog terminals (NO_, NC_, COM_) support 0V to VCC signal swing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | 0.3Ω typical at VCC = +2.7V - ensures minimal insertion loss and voltage drop in audio paths. |
| THD+N | 0.004% at 20Hz–20kHz - preserves signal fidelity for high-resolution audio playback. |
| Supply current (ICC) | 1.2µA typical at +3V - enables ultra-low-power operation in battery-powered MP3 players. |
| Turn-off time (tOFF) | 0.5–2µs - supports rapid channel switching without audible artifacts in multi-source systems. |
| Off-isolation | –90dB at 20kHz - prevents crosstalk between inactive and active audio paths. |
| Analog signal range | 0V to VCC - allows full-rail signal handling without clipping in single-supply amplifier interfaces. |
| Power supply range | +1.8V to +5.5V - compatible with Li-ion, Li-poly, and regulated 3.3V/5V rails in portable designs. |
Pinout & Package
Package: 10-pin UTQFN (1.4mm × 1.8mm × 0.55mm), RoHS-compliant, thermal resistance θJA = 143.1°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | Bypass with 0.1µF capacitor near pin to suppress supply noise affecting RON stability. |
| NO1 (Pin 2) | Switch 1 normally open terminal | Connects to COM1 when CB1 = 1; used for alternate audio source selection (e.g., headset vs. speaker). |
| COM1 (Pin 3) | Switch 1 common terminal | Primary output node; must interface directly with speaker load for optimal impedance matching. |
| CB1 (Pin 4) | Digital control input for Switch 1 | CMOS-compatible; drives NO1/NC1 state; rail-to-rail operation minimizes ICC increase. |
| NC1 (Pin 5) | Switch 1 normally closed terminal | Connected to COM1 when CB1 = 0; provides default path during power-up or control reset. |
| GND (Pin 6) | Ground reference | Low-impedance return path for analog and digital currents; separate grounding improves THD+N. |
| NC2 (Pin 7) | Switch 2 normally closed terminal | Default path for second audio channel; paired with COM2 and NO2 for stereo routing. |
| CB2 (Pin 8) | Digital control input for Switch 2 | Independent of CB1; enables asynchronous switching of left/right audio paths. |
| COM2 (Pin 9) | Switch 2 common terminal | Stereo counterpart to COM1; requires identical load connection for balanced click-pop suppression. |
| NO2 (Pin 10) | Switch 2 normally open terminal | Second audio source node; toggled with CB2 to route auxiliary input (e.g., Bluetooth receiver). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent SPDT topology | Enables simultaneous stereo source switching without shared control logic or timing constraints. |
| 0.3Ω typical on-resistance | Reduces power loss and thermal drift in 16Ω speaker loads, preserving amplifier efficiency. |
| 1mΩ RON flatness | Maintains consistent gain across full audio bandwidth, eliminating frequency-dependent distortion. |
| 80dB PSRR | Rejects supply ripple-induced modulation, critical for clean output with noisy DC-DC converters. |
| ±100nA off-leakage current | Prevents DC bias shift in coupling-capacitor-based amplifier outputs, avoiding pop transients. |
Applications
| Speaker Headset Source Switching | Cellular Phones |
|---|---|
|
Use Scenario: Seamless switching between built-in speaker and 3.5mm headset jack during call handover or media playback. IC Role / Device Role / Timing Role: Dual-SPDT analog switch routing audio output from baseband processor to either transducer path. Use Value: Eliminates audible clicks via low RON flatness and high off-isolation, while 1.2µA ICC extends standby battery life. |
Use Scenario: Dynamic audio path reconfiguration in multi-band LTE smartphones supporting simultaneous voice and VoIP. IC Role / Device Role / Timing Role: Independent control of left/right channels using CB1/CB2 for concurrent speakerphone and earpiece operation. Use Value: 0.5–2µs tOFF enables real-time switching without interrupting call continuity or introducing latency. |
| Portable MP3 Players | Audio Signal Routing |
|
Use Scenario: Selecting between internal DAC output and line-in from external audio source in handheld music players. IC Role / Device Role / Timing Role: Bidirectional analog switch handling full-rail (0V–VCC) signals without level-shifting circuitry. Use Value: 0.004% THD+N ensures studio-grade playback fidelity; 10-pin UTQFN saves PCB area in space-constrained form factors. |
Use Scenario: Reconfigurable signal path in USB-C audio adapters supporting headphone, microphone, and digital audio passthrough. IC Role / Device Role / Timing Role: Low-capacitance (45pF COFF) switch minimizing high-frequency roll-off in wideband audio transmission. Use Value: –110dB crosstalk prevents interference between mic and headphone paths, meeting USB Audio Class 2.0 requirements. |
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 |
|---|---|---|---|
| MAX4991ELB+ | Includes slow turn-on circuitry (tON ≈ 360ms); identical pinout and RON/THD+N specs. | Required where click-and-pop suppression is mandatory in DC-biased amplifier architectures. | Select MAX4991ELB+ only if system-level testing confirms audible pop without slow turn-on; otherwise MAX4992ELB+ offers faster switching. |
| TMUX1574RSVR | 0.5Ω RON, 0.006% THD+N, 10-pin UQFN, but lacks guaranteed –40°C to +85°C operation and has higher 2.5µA ICC. | Suitable for commercial-temperature consumer audio, not industrial or automotive environments. | Choose TMUX1574RSVR only for cost-sensitive designs where extended temperature range and sub-2µA ICC are noncritical. |
Compared with MAX4991ELB+, the MAX4992ELB+ trades slow turn-on for microsecond switching-ideal for dynamic routing; versus TMUX1574RSVR, it delivers lower RON, tighter THD+N, and guaranteed extended-temp performance at marginally higher unit cost.
Availability
MAX4992ELB+ is available at Aetrix Electronics and suitable for portable MP3 players, cellular phones, and audio signal routing applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4992ELB+ 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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, communications, and consumer applications.
The MAX4991–MAX4994 family targets high-fidelity audio routing in battery-powered portable electronics, emphasizing ultra-low distortion, minimal power, and compact packaging for space-constrained layouts.
FAQ
What is the maximum analog signal voltage range supported by the MAX4992ELB+?
The MAX4992ELB+ supports analog signals from 0V to VCC across all terminals (NO_, NC_, COM_), enabling full-rail operation with single-supply audio amplifiers. This range holds for VCC between +1.8V and +5.5V, and is validated over the full –40°C to +85°C operating temperature range per the official datasheet specifications.
Does the MAX4992ELB+ include an enable pin like the MAX4993/MAX4994?
No, the MAX4992ELB+ does not have an enable (EN) pin. It uses two independent digital control inputs-CB1 and CB2-to operate its dual SPDT switches. In contrast, the MAX4993/MAX4994 integrate an active-low EN pin that places all channels in high-impedance state when driven high, a feature absent in the MAX4992ELB+ design.
What is the typical on-resistance flatness of the MAX4992ELB+, and why does it matter for audio performance?
The MAX4992ELB+ specifies 1mΩ on-resistance flatness-the difference between max and min RON over the full 0V to VCC analog input range. This tight flatness ensures uniform gain across the entire audio band (20Hz–20kHz), preventing frequency-dependent distortion and preserving tonal accuracy in high-fidelity playback systems.
Can the MAX4992ELB+ be used in place of the MAX4991ELB+ without layout changes?
Yes, the MAX4992ELB+ is pin-compatible with the MAX4991ELB+ in the same 10-pin UTQFN package, sharing identical pin functions and footprint. However, the MAX4992ELB+ lacks slow turn-on circuitry-so systems relying on that feature for click-and-pop suppression will require firmware or external timing adjustments to avoid audible transients.
What is the off-isolation performance of the MAX4992ELB+, and how is it measured?
The MAX4992ELB+ delivers –90dB off-isolation at 20kHz, measured as 20log(VCOM/VNO or VNC) with RS = RL = 50Ω. This specification ensures strong rejection of unwanted signals from inactive paths, critical for preventing crosstalk between headset and speaker outputs in dual-source mobile audio systems.
MAX4992ELB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- 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):
- 3mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 150µs, 2µs
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 45pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -110dB @ 20kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uDFN (2x2)
MAX4992ELB+ FAQ
1.How can I place an order for MAX4992ELB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4992ELB+ 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 MAX4992ELB+ reliable?
The price and inventory of MAX4992ELB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4992ELB+ is usually 5 days.
3.What payment methods are accepted for MAX4992ELB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4992ELB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4992ELB+?
MAX4992ELB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4992ELB+ 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 MAX4992ELB+?
For technical support, including MAX4992ELB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4992ELB+ requirements.
6.How does Aetrix verify that MAX4992ELB+ is sourced from the original manufacturer or authorized distributors?
All MAX4992ELB+ 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 MAX4992ELB+ meets industry standards.
7.What is the process for return or replacement of MAX4992ELB+?
All MAX4992ELB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4992ELB+, 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 MAX4992ELB+ part is unused and in its original packaging.
Return procedure for MAX4992ELB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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