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Analog Devices Inc./Maxim Integrated MAX4634ETB+T
- Part No.:
- MAX4634ETB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX4634ETB+T.pdf
- Description:
- IC SWITCH SP4T X 1 4OHM 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,611
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Product details
Overview
MAX4634ETB+T from Analog Devices is a fast, low-voltage, 4-channel CMOS analog multiplexer with 4Ω (max) on-resistance, 18ns turn-on time, and 11ns turn-off time. It operates from +1.8V to +5.5V single supply, handles V+ to GND analog signals, and delivers 0.1nA (max) off-leakage at +25°C - ideal for precision signal routing in battery-powered instrumentation.
For engineers reviewing the MAX4634ETB+T datasheet, MAX4634ETB+T pinout, MAX4634ETB+T application, or MAX4634ETB+T equivalent, key selection criteria include guaranteed RON matching (0.3Ω max), RON flatness (1Ω max), -80dB off-isolation at 1MHz, THD of 0.018%, and TDFN-EP package thermal performance.
Technical Context
The MAX4634ETB+T implements a CMOS transmission-gate architecture with integrated ESD protection diodes and logic-level translation for TTL/CMOS compatibility across 1.8V–5.5V supplies. Its address decoding (A1/A0) and enable (EN) control support 4:1 analog switching with break-before-make timing (8ns typ) to prevent channel shorting.
All four normally-open (NO1–NO4) switches share a common analog terminal (COM), with guaranteed RON flatness over full signal range (0–V+) and minimal charge injection (2pC) - critical for sample-and-hold and data-acquisition front-ends where signal integrity and settling error must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 4Ω (max) at V+ = 4.5V, ensuring minimal signal attenuation and voltage drop in precision analog paths. |
| RON Matching | 0.3Ω (max) between channels, enabling matched gain/attenuation in multi-channel sensor interfaces. |
| RON Flatness | 1Ω (max) over 0–V+ signal range, preserving linearity across full input swing without distortion. |
| Turn-On / Turn-Off Time | 18ns / 11ns (typ), supporting high-speed multiplexing in >20MHz sampling systems. |
| Off-Isolation | -80dB at 1MHz, suppressing crosstalk between active and inactive channels in dense routing. |
| Total Harmonic Distortion | 0.018%, maintaining audio and measurement fidelity in AC-coupled signal chains. |
| Supply Range | +1.8V to +5.5V single supply, enabling direct interface with Li-ion, 3.3V, and 5V logic domains. |
Pinout & Package
The MAX4634ETB+T is housed in a 10-pin, 3mm × 3mm TDFN-EP package with exposed pad (EP) internally connected to GND for enhanced thermal dissipation and noise immunity. The EP must be soldered to a large PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input (LSB) | Selects one of four NO inputs per truth table; TTL/CMOS-compatible thresholds (0.4V/2.0V at 3V). |
| NO1–NO4 | Analog Switch Inputs | Four independent normally-open terminals; each rated for ±50mA continuous current and V+ to GND signal swing. |
| GND | Ground Reference | Primary return path for analog and digital circuitry; connects to EP for thermal and EMI control. |
| EN | Enable Control Input | Active-high logic input; drives all switches to high-impedance state when low, enabling system-level power gating. |
| V+ | Positive Supply | Single analog/digital supply rail; requires local 10µF bypass capacitor for stable switching performance. |
| COM | Common Analog Terminal | Shared output node for all four switches; supports bidirectional signal flow with matched RON. |
| A1 | Address Input (MSB) | Completes 2-bit channel selection with A0; no internal pull-up/down - external bias required if floating. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON flatness | 1Ω max over full 0–V+ signal range ensures consistent gain and minimal harmonic generation in AC applications. |
| Low leakage current | 0.1nA max (at +25°C) enables high-impedance sensor interfacing and long-hold-time sample-and-hold circuits. |
| TTL/CMOS logic compatibility | Fixed VIH/VIL thresholds (0.4V/2.0V at 3V; 0.8V/2.4V at 5V) eliminate level-shifter requirements in mixed-supply systems. |
| Exposed thermal pad (EP) | Internally tied to GND; reduces θJA to 24.4°C/W, supporting 1951mW max power dissipation at +70°C ambient. |
| Break-before-make timing | 8ns typical prevents momentary shorting during channel transitions - essential for fault-tolerant signal routing. |
Applications
| Battery-Powered Instrumentation | Audio Signal Routing |
|---|---|
Use Scenario: Portable multimeter front-end selecting among multiple sensor inputs (thermocouple, RTD, voltage) under 3.3V Li-ion supply. IC Role / Device Role / Timing Role: 4:1 analog multiplexer providing low-RON, low-leakage signal path selection with <20ns switching for synchronized ADC sampling. Use Value: Enables single-ADC architecture with <0.02% gain error across channels and <1µV offset drift due to matched RON and flatness. | Use Scenario: Headphone amplifier input selector routing line-level stereo sources (DAC, Bluetooth, aux) to shared amplification stage. IC Role / Device Role / Timing Role: Bidirectional analog switch handling 2VPP audio with 0.018% THD and -78dB crosstalk at 1kHz. Use Value: Preserves dynamic range and channel separation without audible artifacts or intermodulation distortion. |
| Low-Voltage Data Acquisition | Communications Circuit Switching |
Use Scenario: Industrial IoT node acquiring 16-bit sensor data from four pressure transducers powered by 1.8V LDO. IC Role / Device Role / Timing Role: Precision analog MUX with 4Ω RON and 1Ω flatness, minimizing gain error and nonlinearity in ratiometric measurements. Use Value: Delivers <±0.005% FSR INL and <1LSB missing-code performance when paired with 16-bit SAR ADC. | Use Scenario: Baseband signal path in cellular modem switching between RFIC receive chains and calibration loops. IC Role / Device Role / Timing Role: High-speed analog switch with 18ns tON/11ns tOFF and -80dB off-isolation at 1MHz for clean LO leakage suppression. Use Value: Reduces adjacent-channel interference by >20dB compared to discrete MOSFET solutions, improving receiver sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG714BRUZ | 4Ω RON (max), but 25ns tON/18ns tOFF; 16-TSSOP, no EP; -40°C to +85°C. | Larger footprint, higher thermal resistance; lacks TDFN-EP's PCB-level EMI shielding. | Prefer MAX4634ETB+T for space-constrained, thermally demanding, or high-density layouts requiring superior isolation. |
| TMUX1574RSVR | 4.5Ω RON (max), 15ns tON/10ns tOFF; 10-WQFN, EP; 1.08V–5.5V supply; -40°C to +125°C. | Wider supply range and extended temperature grade, but RON matching not specified; THD not characterized. | Choose TMUX1574RSVR only if operation beyond +85°C or sub-1.8V supply is required; otherwise MAX4634ETB+T offers tighter RON specs and verified THD. |
Compared with ADG714BRUZ and TMUX1574RSVR, the MAX4634ETB+T provides the tightest RON matching (0.3Ω max) and flatness (1Ω max), validated THD (0.018%), and optimized TDFN-EP thermal design - making it the preferred choice for precision, high-density, and battery-sensitive analog routing.
Availability
MAX4634ETB+T is available at Aetrix Electronics and suitable for battery-operated equipment, audio/video signal routing, and low-voltage data-acquisition systems requiring stable component supply and long-term production continuity.
Supply support for MAX4634ETB+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets.
The MAX4634ETB+T belongs to Analog Devices' high-speed, low-voltage analog switch product line - engineered specifically for precision signal routing in space-constrained, low-power, and thermally sensitive applications.
FAQ
What is the maximum supply voltage rating for the MAX4634ETB+T?
The MAX4634ETB+T has an absolute maximum supply voltage (V+) of +6V. However, its operational range is specified from +1.8V to +5.5V. Exceeding +5.5V may cause parametric degradation or reliability issues, even if within absolute maximum ratings. For robust long-term operation, keep V+ ≤ +5.5V and ensure proper sequencing - apply V+ before analog or logic signals.
Does the MAX4634ETB+T require external pull-up resistors on A0, A1, or EN pins?
No, the MAX4634ETB+T does not integrate internal pull-up or pull-down resistors on A0, A1, or EN. These pins have CMOS-compatible input structure with defined VIH/VIL thresholds, but they must be actively driven to valid logic levels. Leaving them floating risks undefined channel selection or unintended enable states, so external biasing is required if not driven by a controller.
How does the exposed pad (EP) on the MAX4634ETB+T package function electrically and thermally?
The exposed pad (EP) on the MAX4634ETB+T is internally connected to GND and serves dual roles: electrically, it provides a low-inductance ground return path that improves EMI immunity and reduces ground bounce; thermally, it lowers junction-to-ambient thermal resistance to 24.4°C/W, enabling 1951mW power dissipation at +70°C ambient. It must be soldered to a solid PCB ground plane - not used as a signal connection point.
Can the MAX4634ETB+T handle bipolar analog signals such as ±2.5V?
No, the MAX4634ETB+T is designed for unipolar analog signals ranging from GND to V+. Its absolute maximum analog input range is -0.3V to (V+ + 0.3V), but guaranteed operation is only from 0V to V+. Applying negative voltages below GND risks forward-biasing internal ESD diodes and causing excessive leakage or damage unless external clamping is added - it is not rated for true bipolar signal handling.
What is the guaranteed RON matching specification for the MAX4634ETB+T across temperature?
The MAX4634ETB+T guarantees RON matching (ΔRON = RON(MAX) − RON(MIN)) of 0.4Ω maximum across the full operating temperature range of -40°C to +85°C, measured at V+ = 4.5V and ICOM = 10mA. This specification ensures consistent channel-to-channel gain tracking in multi-sensor systems without recalibration over temperature.
MAX4634ETB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 4Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 18ns, 11ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 13pF, 52pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -78dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (3x3)
MAX4634ETB+T FAQ
1.How can I place an order for MAX4634ETB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4634ETB+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 MAX4634ETB+T reliable?
The price and inventory of MAX4634ETB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4634ETB+T is usually 5 days.
3.What payment methods are accepted for MAX4634ETB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4634ETB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4634ETB+T?
MAX4634ETB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4634ETB+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 MAX4634ETB+T?
For technical support, including MAX4634ETB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4634ETB+T requirements.
6.How does Aetrix verify that MAX4634ETB+T is sourced from the original manufacturer or authorized distributors?
All MAX4634ETB+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 MAX4634ETB+T meets industry standards.
7.What is the process for return or replacement of MAX4634ETB+T?
All MAX4634ETB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4634ETB+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 MAX4634ETB+T part is unused and in its original packaging.
Return procedure for MAX4634ETB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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