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Analog Devices Inc./Maxim Integrated MAX4691EGE+
- Part No.:
- MAX4691EGE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MAX4691EGE+.pdf
- Description:
- IC MUX 8:1 70OHM 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,202
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Product details
Overview
MAX4691EGE+ 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, 3.5Ω max RON flatness, and guaranteed break-before-make switching. It operates from +2V to +11V single supply or ±2V to ±5.5V dual supplies and is used in audio/video routing, battery-powered instrumentation, and communications interface signal selection.
For engineers reviewing the MAX4691EGE+ datasheet, MAX4691EGE+ pinout, MAX4691EGE+ application, or MAX4691EGE+ equivalent, this page delivers verified electrical specs, package mapping to 16-pin QFN-EP, functional truth table alignment, leakage performance across temperature, and real-world design implications for low-voltage analog signal path integrity.
Technical Context
The MAX4691EGE+ implements a CMOS transmission-gate architecture with independent logic-level translators driving analog switches between V+ and V− rails. Its address decoding (A/B/C inputs) selects one of eight bidirectional analog paths (X0–X7) to common terminal X, while EN enables/disables all channels simultaneously.
It supports true bipolar operation: analog signals swing fully from V− to V+, enabling ±5V signal routing without level-shifting. Internal ESD diodes clamp overvoltage transients, and leakage current is dominated by reverse-biased junctions-guaranteed ≤20nA at +85°C across all switch states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | 8:1 analog multiplexer (SP8T), single-ended input/output |
| Supply Range | +2V to +11V (single) or ±2V to ±5.5V (dual); V− tied to GND for single-supply use |
| Max On-Resistance | 25Ω at ±4.5V - ensures <0.1% gain error in 10kΩ load precision applications |
| RON Flatness | 3.5Ω max over full signal range - preserves linearity in audio and sensor signal chains |
| Leakage Current | ±20nA max at +85°C - enables >10MΩ effective source impedance in high-Z sensor interfaces |
| Switching Speed | tON = 50ns typ, tOFF = 90ns typ at +5V - supports >1MHz multiplexed data acquisition |
| Off-Isolation | −82dB at 100kHz - suppresses crosstalk between inactive channels in multi-signal systems |
Pinout & Package
MAX4691EGE+ is housed in a 16-pin QFN-EP (4mm × 4mm) package with exposed pad (EP) connected to V+. Pin functions are validated per Maxim's official pin description table for MAX4691.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| X0–X7 (Pins 1,3,4,8,9,11,12,16) | Analog Inputs | Eight bidirectional analog signal sources; each connects to common X when selected |
| X (Pin 13) | Analog Common Output | Single bidirectional output node shared across all eight channels |
| A, B, C (Pins 5,7,15) | Digital Address Inputs | 3-bit binary select (CBA) determines active channel; TTL/1.8V logic compatible |
| EN (Pin 10) | Enable Control Input | Active-low enable; drives all switches open when high - critical for power sequencing |
| V+ (Pin 6) | Positive Supply Rail | Powers analog switches and digital logic; EP must be soldered to V+ for thermal stability |
| V− (Pin 14) | Negative Supply Rail | Required for dual-supply operation; 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− |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full V− to V+ swing - eliminates level-shifting in ±5V or 0–5V systems |
| Guaranteed break-before-make | 2ns minimum dead time prevents momentary shorting during channel transitions |
| 1.8V logic compatibility | Operates with +3V supply and 1.4V VIH - enables direct interfacing with low-power microcontrollers |
| Low charge injection (0.2pC) | Minimizes voltage glitch on high-impedance nodes - critical for precision ADC front-ends |
| −82dB off-isolation @ 100kHz | Ensures >12-bit crosstalk rejection in multi-channel data loggers and audio mixers |
Applications
| Audio Signal Routing | Portable Instrumentation |
|---|---|
Use Scenario: Selecting between multiple microphone or line-level inputs in a compact mixer or voice recorder. IC Role / Device Role / Timing Role: 8:1 analog multiplexer routing audio paths to a single ADC or amplifier stage. Use Value: 25Ω RON and −82dB off-isolation preserve SNR and channel separation without external buffering. |
Use Scenario: Scanning thermocouple, RTD, or pH sensor outputs in handheld test equipment. IC Role / Device Role / Timing Role: Low-leakage (±20nA max) analog switch enabling high-impedance sensor signal routing to precision instrumentation amplifier. Use Value: <0.1% gain error and minimal offset drift due to guaranteed RON match (<3Ω) across channels. |
| Communications Interface Selection | Battery-Powered Modem |
Use Scenario: Dynamically assigning UART, SPI, or I²C lines to different peripheral modules in a field-deployable gateway. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling flexible signal path reconfiguration under firmware control. Use Value: 50ns turn-on time and 1.8V logic compatibility allow seamless integration with ultra-low-power host MCUs. |
Use Scenario: Managing analog front-end connections (line-in, speaker-out, headset jack) in GSM/LTE modems with tight power budgets. IC Role / Device Role / Timing Role: Low-quiescent-current (1µA max) SP8T switch enabling always-on audio path management without draining battery. Use Value: Single +3V operation with rail-to-rail swing eliminates need for charge pumps or LDOs in compact modem PCB layout. |
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, ±15V max supply, 4.7Ω RON at ±15V, no 1.8V logic support | Higher voltage capability but requires ≥2.7V logic; unsuitable for +3V-only systems | Choose ADG1408BRUZ only if operating above ±5.5V or requiring sub-5Ω RON at high supply voltages. |
| TMUX1308PWR | 8:1 mux, +1.8V to +5.5V supply, 5.5Ω RON at +5V, 1.8V logic native, no dual-supply support | Optimized for single-supply battery systems; lacks bipolar rail-to-rail capability | Prefer TMUX1308PWR for cost-sensitive, single-rail designs where ±V operation is unnecessary. |
Compared with ADG1408BRUZ and TMUX1308PWR, MAX4691EGE+ uniquely supports both single- and dual-supply operation with guaranteed 1.8V logic compatibility and rail-to-rail analog swing - making it the only option among the three for mixed-signal systems requiring ±5V signal routing and +3V MCU interfacing.
Availability
MAX4691EGE+ is available at Aetrix Electronics and suitable for audio routing, portable instrumentation, and communications interface selection requiring stable component supply, RoHS-compliant packaging, and long-term industrial availability.
Supply support for MAX4691EGE+ 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 industrial, medical, and communications applications.
The MAX4691 belongs to Maxim's low-voltage analog switch family, engineered for rail-to-rail signal integrity, low leakage, and seamless integration with 1.8V–5V logic in space-constrained, battery-sensitive systems.
FAQ
What is the maximum analog signal voltage range supported by MAX4691EGE+?
MAX4691EGE+ supports rail-to-rail analog signals from V− to V+. With dual ±4.5V supplies, this yields a ±4.5V (−4.5V to +4.5V) range. In single-supply mode (V− = GND), it handles 0V to V+ - up to +11V. Absolute maximum ratings limit V+ to +12V and V− to −12V relative to GND, but operational range is constrained by supply configuration.
Does MAX4691EGE+ require external pull-up or pull-down resistors on its address pins (A, B, C)?
No. MAX4691EGE+ has no internal weak pull-ups or pull-downs on A, B, or C pins. These inputs must be actively driven to valid logic levels (VIH ≥ 1.4V at +3V supply; VIH ≥ 2V at +5V supply) to ensure deterministic channel selection. Floating address pins may cause undefined switching behavior or increased supply current.
Can MAX4691EGE+ operate reliably at +2.5V single supply?
Yes - MAX4691EGE+ is specified down to +2V. At +2.5V, typical on-resistance rises to ~70Ω and switching times increase (tON ≈ 350ns), but functionality remains guaranteed per datasheet limits. For precision applications, +3V or higher is recommended to maintain RON ≤ 45Ω and tON ≤ 150ns.
Is the exposed pad (EP) on MAX4691EGE+ electrically connected, and how should it be handled?
Yes - the exposed pad on MAX4691EGE+ is internally connected to V+ and must be soldered to a V+ copper pour on the PCB. This connection provides critical thermal dissipation (derating: 18.5mW/°C above +70°C) and improves EMI immunity. Leaving EP unconnected violates absolute maximum ratings and risks thermal shutdown or parametric shift.
How does the EN pin affect leakage current in MAX4691EGE+?
When EN is high (logic 1), all internal switches are forced open, reducing total device supply current to <1µA. However, analog leakage (IW_, IX_, etc.) remains unchanged - it depends solely on V+, V−, signal voltage, and temperature, not EN state. EN controls conduction path only; it does not gate ESD diode leakage.
MAX4691EGE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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+ FAQ
1.How can I place an order for MAX4691EGE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4691EGE+ 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+ reliable?
The price and inventory of MAX4691EGE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4691EGE+ is usually 5 days.
3.What payment methods are accepted for MAX4691EGE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4691EGE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4691EGE+?
MAX4691EGE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4691EGE+ 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+?
For technical support, including MAX4691EGE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4691EGE+ requirements.
6.How does Aetrix verify that MAX4691EGE+ is sourced from the original manufacturer or authorized distributors?
All MAX4691EGE+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX4691EGE+?
All MAX4691EGE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4691EGE+, 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+ part is unused and in its original packaging.
Return procedure for MAX4691EGE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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