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Analog Devices Inc./Maxim Integrated MAX4732EBL-T
- Part No.:
- MAX4732EBL-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 9-WFBGA, CSPBGA
- Datasheet:
-
MAX4732EBL-T.pdf
- Description:
- IC SWITCH SPST-NCX2 25OHM 9UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
The MAX4732EBL-T from Maxim Integrated is a dual, normally closed (NC), single-pole/single-throw (SPST) analog switch IC operating from a single +2V to +11V supply and supporting rail-to-rail signal switching. It delivers 50Ω (max) on-resistance at +3V, 3.5Ω (max) channel-to-channel RON matching, and <0.1nA leakage current at +25°C-enabling precision low-power signal routing in portable instrumentation and battery-powered audio systems.
For engineers reviewing the MAX4732EBL-T datasheet, MAX4732EBL-T pinout, MAX4732EBL-T application, or MAX4732EBL-T equivalent, this page provides verified electrical specs, UCSP-9 package layout, real-world use cases in audio routing and data acquisition, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The MAX4732EBL-T implements two independent NC SPST switches using CMOS process technology, with logic-controlled inputs (IN1/IN2) that disconnect COM–NC paths when high and connect them when low. Its architecture ensures bidirectional analog signal handling across the full supply range (GND to V+), with guaranteed RON flatness of 9Ω (max) over the signal range at +3V.
It features TTL/CMOS-compatible digital inputs, -72dB off-isolation and -108dB crosstalk at 1MHz, and ultra-low quiescent power consumption (0.5nW typ). The device is specified for operation from -40°C to +85°C and supports single-supply biasing without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.0V to +11V - enables direct integration into 3.3V, 5V, and higher-voltage portable systems without regulators |
| On-Resistance (RON) | 50Ω (max) at +3V - ensures minimal signal attenuation and gain error in precision sensor interfaces |
| RON Matching | 3.5Ω (max) between channels at +3V - critical for matched-path applications like differential signal switching |
| Leakage Current | <0.1nA at +25°C - preserves accuracy in high-impedance circuits such as medical front-ends and pH sensors |
| Off-Isolation | -72dB at 1MHz - suppresses unwanted coupling between adjacent switched signal paths |
| Crosstalk | -108dB at 1MHz - prevents interference in multi-channel audio or AFE routing |
| Turn-On/Off Time | 170ns / 70ns (max) at +3V - supports fast multiplexing in data-acquisition systems up to ~5MHz effective sample rate |
Pinout & Package
The MAX4732EBL-T is housed in a 9-bump, 1.52mm × 1.52mm wafer-level chip-scale package (UCSP™) with bottom-side solder bumps. This ultra-compact footprint reduces PCB area by >70% versus 8-pin µMAX® or TDFN alternatives while maintaining thermal performance via exposed substrate contact.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | NC1 | Normally closed analog terminal for Switch 1 - connects to COM1 when IN1 = LOW |
| A2 | COM1 | Common analog node for Switch 1 - bidirectional path shared between NC1 and external circuitry |
| A3 | GND | Digital ground reference - must be connected to system ground plane for stable logic and analog performance |
| B1 | IN1 | Logic control input for Switch 1 - active-low enables NC1–COM1 connection |
| B3 | IN2 | Logic control input for Switch 2 - independent active-low control for NC2–COM2 path |
| C1 | V+ | Positive supply input - bypass with ≥0.1µF ceramic capacitor placed adjacent to the package |
| C2 | COM2 | Common analog node for Switch 2 - bidirectional path shared between NC2 and external circuitry |
| C3 | NC2 | Normally closed analog terminal for Switch 2 - connects to COM2 when IN2 = LOW |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Analog signals from GND to V+ pass unattenuated - eliminates need for level-shifting in mixed-voltage systems |
| Ultra-low leakage | <0.1nA NO_/NC_ off-leakage at +25°C - maintains integrity of high-Z sensor outputs and battery-monitoring nodes |
| Guaranteed RON matching | 3.5Ω max mismatch at +3V - enables precise channel balancing in instrumentation-grade multiplexers |
| Low dynamic power | 0.5nW typical quiescent consumption - extends battery life in always-on portable devices |
| High-frequency isolation | -108dB crosstalk at 1MHz - prevents audible artifacts in stereo audio routing and RF-adjacent signal paths |
Applications
| Portable Audio Signal Routing | Low-Voltage Data Acquisition |
|---|---|
Use Scenario: Switching microphone inputs or headphone outputs in smartphones and wireless earbuds. IC Role / Device Role / Timing Role: Dual NC SPST switch isolating signal paths during mode transitions (e.g., call-to-music handover). Use Value: 50Ω RON and 3.5Ω matching preserve audio fidelity; <0.1nA leakage prevents DC offset drift in electret mic bias networks. |
Use Scenario: Multiplexing sensor outputs (thermocouples, strain gauges) into a low-power ADC in handheld test equipment. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling of multiple high-impedance sources. Use Value: Rail-to-rail operation accommodates full sensor voltage swing; -72dB off-isolation prevents cross-channel measurement errors. |
| Battery Monitoring Systems | Communications Circuit Protection |
Use Scenario: Isolating battery cell voltage sense lines during charging/discharging cycles in Li-ion packs. IC Role / Device Role / Timing Role: Normally closed switch maintaining default connection until fault detection triggers disconnection. Use Value: NC configuration ensures fail-safe continuity; 0.5nW quiescent power minimizes parasitic drain on standby batteries. |
Use Scenario: Protecting baseband processor I/Os from transient surges in cellular modem interfaces. IC Role / Device Role / Timing Role: Fast-switching analog gate inserted between RF transceiver and baseband ASIC. Use Value: 70ns turn-off time blocks ESD-induced glitches; -108dB crosstalk prevents RF noise coupling into sensitive analog rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4732EUA+ | 8-pin µMAX® package (3mm × 3mm); identical electrical specs and NC functionality | Requires larger PCB area; better thermal dissipation for continuous 10mA loads | Select when board space permits and higher power handling is needed |
| ADG722BRMZ-REEL7 | 5V-only supply (±1.8V to ±5.5V dual or +2.7V to +5.5V single); 4.5Ω RON matching at +5V; no UCSP option | Not suitable for 3.3V-only or >5V systems; requires level-shifting for 3V logic interfacing | Select only for 5V designs where tighter RON matching outweighs supply flexibility loss |
Compared with MAX4732EUA+, the MAX4732EBL-T saves >75% board area but has lower thermal mass; compared with ADG722BRMZ-REEL7, it supports wider supply range and lower leakage but trades off some RON matching at +5V.
Availability
The MAX4732EBL-T is available at Aetrix Electronics and suitable for portable audio signal routing, low-voltage data acquisition, and battery monitoring systems requiring stable component supply across extended production lifecycles.
Supply support for MAX4732EBL-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) designs precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, automotive, and consumer markets.
The MAX4731/MAX4732/MAX4733 family was developed specifically for ultra-low-power, rail-to-rail analog switching in space-constrained portable electronics-emphasizing leakage control, supply flexibility, and miniature packaging.
FAQ
What is the function of the NC configuration in the MAX4732EBL-T?
The MAX4732EBL-T contains two normally closed (NC) SPST switches, meaning each switch conducts between its COM and NC terminals when its respective IN input is logic low (0V), and opens the path when IN is high (V+). This fail-safe behavior ensures default connectivity in power-loss or reset conditions-critical for battery monitoring and safety-critical signal paths. The MAX4732EBL-T's NC topology differs from the NO (MAX4731) and SPDT (MAX4733) variants in the same family.
Does the MAX4732EBL-T require external protection diodes for overvoltage tolerance?
No-internal protection diodes are integrated, but external blocking diodes (D1/D2 per Figure 1 of the datasheet) are recommended if analog signals may exceed V+ + 0.3V or dip below GND. The MAX4732EBL-T's absolute maximum ratings allow V+ up to +12V and analog pins to -0.3V or V+ + 0.3V. Adding external diodes reduces the usable analog range by ~0.7V but prevents damage during fault conditions without affecting MAX4732EBL-T leakage or RON.
Can the MAX4732EBL-T operate reliably at 2.0V supply?
Yes-the MAX4732EBL-T is fully specified from +2.0V to +11V. At +2.0V, RON increases to 60Ω (max), and logic thresholds scale proportionally (VIH ≈ 1.4V, VIL ≈ 0.8V). The MAX4732EBL-T maintains rail-to-rail analog signal handling and <0.1nA leakage at this minimum supply, making it suitable for single-cell Li-metal or alkaline battery systems where voltage sags to 2.0V under load.
How does the UCSP-9 package of the MAX4732EBL-T impact PCB assembly?
The MAX4732EBL-T's 9-bump UCSP-9 package (1.52mm × 1.52mm) requires JEDEC J-STD-020-compliant reflow profiles (IR/VPR or convection), preheating, and no hand/wave soldering. Bump temperature limits (220°C IR, 215°C vapor phase) mandate strict thermal profile adherence. The MAX4732EBL-T's small size reduces parasitic inductance/capacitance versus leaded packages, improving high-frequency performance-but demands precise stencil design and automated optical inspection for reliable bump joint formation.
What is the significance of the 3.5Ω RON matching specification for the MAX4732EBL-T?
The 3.5Ω (max) RON matching between the two NC switches in the MAX4732EBL-T ensures near-identical on-resistance values across channels at +3V. This minimizes gain mismatch and timing skew in differential or parallel-path applications-such as dual-channel sensor multiplexing or balanced audio switching. Unlike typical "matching" specs expressed as percentage, the MAX4732EBL-T guarantees absolute delta-RON, directly enabling sub-0.1% error budgets in precision measurement systems.
MAX4732EBL-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm
- Voltage - Supply, Single (V+):
- 2V ~ 11V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 85ns, 45ns
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- 7.5pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -108dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-UCSP (1.52x1.52)
MAX4732EBL-T FAQ
1.How can I place an order for MAX4732EBL-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4732EBL-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 MAX4732EBL-T reliable?
The price and inventory of MAX4732EBL-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4732EBL-T is usually 5 days.
3.What payment methods are accepted for MAX4732EBL-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4732EBL-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4732EBL-T?
MAX4732EBL-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4732EBL-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 MAX4732EBL-T?
For technical support, including MAX4732EBL-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4732EBL-T requirements.
6.How does Aetrix verify that MAX4732EBL-T is sourced from the original manufacturer or authorized distributors?
All MAX4732EBL-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 MAX4732EBL-T meets industry standards.
7.What is the process for return or replacement of MAX4732EBL-T?
All MAX4732EBL-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4732EBL-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 MAX4732EBL-T part is unused and in its original packaging.
Return procedure for MAX4732EBL-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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