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Analog Devices Inc./Maxim Integrated MAX4691EGE-T
- Part No.:
- MAX4691EGE-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MAX4691EGE-T.pdf
- Description:
- IC MUX 8:1 70OHM 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
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Product details
Overview
MAX4691EGE-T from Maxim Integrated is an 8-channel analog multiplexer IC configured as a single-pole, 8-throw (SP8T) switch with rail-to-rail signal handling, 25Ω max on-resistance at ±4.5V dual supplies, guaranteed break-before-make timing, and 1.8V logic compatibility when operated from +3V. It serves in precision audio routing, battery-powered instrumentation, and low-voltage communications circuits where channel matching and low leakage are critical.
For engineers reviewing the MAX4691EGE-T datasheet, MAX4691EGE-T pinout, MAX4691EGE-T application, or MAX4691EGE-T equivalent, this page delivers verified electrical specs, UCSP/QFN package mapping, functional pin roles, real-world use scenarios, and validated alternative parts for design-in and supply continuity planning.
Technical Context
The MAX4691EGE-T implements a CMOS transmission-gate architecture with independent control of eight analog inputs (X0–X7) to a common output (X), driven by three address lines (A, B, C) and an enable input (EN). Its internal logic-level translators convert 1.8V/3.3V/5V digital inputs into full-rail analog gate drive signals across V+ and V−.
It supports both single-supply operation (V− = GND, V+ = +2V to +11V) and dual-supply operation (V+ = +2V to +5.5V, V− = −2V to −5.5V), enabling true bipolar signal switching up to ±5.5V with ≤3.5Ω on-resistance flatness and ≤3Ω channel-to-channel RON matching under ±4.5V conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | 8:1 analog multiplexer (SP8T), bidirectional signal path |
| On-Resistance (RON) | 25Ω max at ±4.5V dual supply - ensures minimal signal attenuation and gain error in precision sensor or audio paths |
| RON Matching | 3Ω max between channels at ±4.5V - critical for multi-channel calibration and ratiometric measurement accuracy |
| Break-Before-Make Time | 2ns min - prevents momentary shorting during channel switching in sensitive analog systems |
| Leakage Current | ±20nA max at +85°C - preserves DC integrity in high-impedance sensor front-ends |
| Switching Speed | tON = 50ns typ, tOFF = 90ns typ at +5V - supports >10MHz analog multiplexing in data acquisition |
| Logic Compatibility | 1.8V logic-high threshold at +3V supply - enables direct interface with ultra-low-power microcontrollers |
Pinout & Package
The MAX4691EGE-T is supplied in a 16-pin QFN-EP (4mm × 4mm) package with exposed pad. Pin numbering follows standard QFN layout (pin 1 at top-left corner, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| X0–X7 (Pins 1,3,4,8,9,11,12,16) | Analog Inputs | Eight bidirectional analog signal sources selectable to common output X |
| X (Pin 13) | Analog Common Output | Single-ended output node shared across all eight channels |
| A, B, C (Pins 5,7,15) | Digital Address Inputs | 3-bit binary code selects active channel (X0–X7); C is MSB |
| EN (Pin 10) | Enable Control | Active-low enable: logic low activates switching; logic high forces all channels open |
| V+ (Pin 6) | Positive Supply | Supplies analog switches and internal logic; range +2V to +11V (single) or +2V to +5.5V (dual) |
| V− (Pin 14) | Negative Supply | Required for dual-supply operation (±2V to ±5.5V); connect to GND for single-supply mode |
| GND (Pin 2) | Digital Ground Reference | Reference for logic inputs only; analog signals float between V+ and V− |
| EP (Exposed Pad) | Thermal & Electrical Tie | Must be soldered to PCB copper pour connected to V+ for thermal dissipation and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output voltages from V− to V+, enabling ±5.5V bipolar or 0V–11V unipolar signal routing without clipping |
| Guaranteed break-before-make | Ensures no overlap between channel closures - eliminates transient shorts in power-sensitive or fault-tolerant systems |
| Low 1nA typical leakage current | Maintains signal integrity in high-Z applications like pH sensors, photodiode amplifiers, and medical electrode interfaces |
| 16-pin QFN-EP package (4mm × 4mm) | Reduces PCB area by >50% vs. SOIC-16 while improving thermal performance via exposed pad |
| 1.8V logic-compatible inputs | Eliminates level-shifting circuitry when interfacing with modern low-voltage MCUs (e.g., ARM Cortex-M0+, MSP430) |
Applications
| Audio Signal Routing | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Selecting between multiple microphone or line-level inputs in a portable audio recorder or headset controller. IC Role / Device Role / Timing Role: 8:1 analog multiplexer routing audio signals with <25Ω RON, <3.5Ω flatness, and <90ns switching to preserve fidelity. Use Value: Enables compact, low-noise input selection without external op-amps or level shifters due to rail-to-rail operation and 1.8V logic compatibility. | Use Scenario: Multiplexing thermistor, RTD, and strain gauge outputs into a single ADC channel in handheld test equipment. IC Role / Device Role / Timing Role: Precision analog switch providing matched on-resistance (<3Ω channel delta) and sub-20nA leakage at +85°C. Use Value: Maintains measurement accuracy across temperature without per-channel calibration, reducing firmware complexity and BOM cost. |
| Communications Interface Switching | Modem Analog Front-End |
Use Scenario: Dynamically reconfiguring analog filter banks or RF front-end paths in software-defined radio modules. IC Role / Device Role / Timing Role: High-speed SP8T switch with 50ns tON, −80dB off-isolation, and −87dB crosstalk at 100kHz. Use Value: Prevents signal coupling between adjacent channels during frequency-agile operation, supporting clean spectral purity in narrowband comms. | Use Scenario: Isolating analog voice/data paths in DSL or POTS modems during line testing or fallback mode transitions. IC Role / Device Role / Timing Role: Fault-tolerant analog mux with guaranteed break-before-make and ±5.5V signal swing capability. Use Value: Eliminates cross-talk-induced line errors during hot-swapping of analog line cards, improving modem reliability and certification margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1408BRUZ | 8:1 mux with 1.5Ω RON at ±15V, but requires ±15V supplies; no 1.8V logic support | Targeted at high-precision industrial PLC I/O, not low-voltage portable designs | Select when ultra-low RON and wide voltage range outweigh size and logic-level constraints |
| TMUX1308RTER | 8:1 mux with 4.5Ω RON at +5V, 1.8V logic compatible, but only rated to +85°C (no extended temp option) | Suitable for consumer-grade USB-C analog switches, not automotive or industrial environments | Select for cost-sensitive, commercial-temp applications where 4.5Ω RON is acceptable and footprint matches |
Compared with ADG1408BRUZ and TMUX1308RTER, the MAX4691EGE-T uniquely balances low-voltage operation (+2V min), 1.8V logic compatibility, ±5.5V bipolar capability, and industrial temperature range (−40°C to +85°C) in a space-efficient QFN package-making it optimal for portable, battery-constrained, and mixed-signal embedded systems requiring robust analog signal routing.
Availability
MAX4691EGE-T is available at Aetrix Electronics and suitable for audio signal routing, battery-powered instrumentation, and communications interface switching requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4691EGE-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, mixed-signal, and power-management ICs for demanding industrial, medical, and communications applications.
The MAX4691EGE-T belongs to Maxim's low-voltage analog switch family, engineered specifically for compact, energy-efficient systems requiring rail-to-rail signal handling, low leakage, and seamless integration with modern low-voltage microcontrollers.
FAQ
What is the maximum supply voltage rating for MAX4691EGE-T?
The MAX4691EGE-T has an absolute maximum V+ to GND rating of +12V and a V+ to V− rating of +12V. For reliable operation, the recommended single-supply range is +2V to +11V (with V− tied to GND), and the dual-supply range is ±2V to ±5.5V. Exceeding these limits risks permanent damage due to internal ESD diode conduction.
Does MAX4691EGE-T support rail-to-rail analog signal switching?
Yes, the MAX4691EGE-T supports true rail-to-rail analog signal handling: input and output signals can swing from V− to V+ across all operating conditions. This is confirmed in the datasheet's "Analog Signal Range" specification (0V to V+ for single supply; V− to V+ for dual supply) and enables full utilization of ADC/DAC dynamic range in precision systems.
What is the function of the EN pin on MAX4691EGE-T?
The EN (Enable) pin on MAX4691EGE-T is an active-low digital control that disables all eight analog channels when driven high. When EN = logic high, all switches open regardless of address inputs A/B/C. When EN = logic low, channel selection proceeds normally via A/B/C. This allows global shutdown for power saving or safety-critical isolation.
Can MAX4691EGE-T operate from a +3.3V single supply?
Yes, the MAX4691EGE-T is fully specified and guaranteed for operation from a +3.3V single supply (V+ = +3.3V, V− = GND). At this voltage, it delivers ≤70Ω max on-resistance, ≤5Ω max RON matching, and maintains 1.8V logic compatibility - making it ideal for interfacing directly with 3.3V microcontrollers without level translation.
Is the exposed pad (EP) on MAX4691EGE-T electrically connected?
Yes, the exposed pad (EP) on the MAX4691EGE-T QFN-EP package is internally connected to V+ and must be soldered to a PCB copper pour tied to the V+ net. This connection provides critical thermal dissipation and reduces ground bounce and EMI - omitting it degrades thermal performance and may cause premature failure under sustained load.
MAX4691EGE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 70Ohm
- Channel-to-Channel Matching (ΔRon):
- 2Ohm
- Voltage - Supply, Single (V+):
- 2.7V ~ 11V
- Voltage - Supply, Dual (V±):
- ±2V ~ 5.5V
- Switch Time (Ton, Toff) (Max):
- 300ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 0.1pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 68pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -75dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (4x4)
MAX4691EGE-T FAQ
1.How can I place an order for MAX4691EGE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4691EGE-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 MAX4691EGE-T reliable?
The price and inventory of MAX4691EGE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4691EGE-T is usually 5 days.
3.What payment methods are accepted for MAX4691EGE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4691EGE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4691EGE-T?
MAX4691EGE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4691EGE-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 MAX4691EGE-T?
For technical support, including MAX4691EGE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4691EGE-T requirements.
6.How does Aetrix verify that MAX4691EGE-T is sourced from the original manufacturer or authorized distributors?
All MAX4691EGE-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 MAX4691EGE-T meets industry standards.
7.What is the process for return or replacement of MAX4691EGE-T?
All MAX4691EGE-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4691EGE-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 MAX4691EGE-T part is unused and in its original packaging.
Return procedure for MAX4691EGE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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