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Analog Devices Inc./Maxim Integrated MAX4803ETN+
- Part No.:
- MAX4803ETN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 56-WFQFN Exposed Pad
- Datasheet:
-
MAX4803ETN+.pdf
- Description:
- IC MUX 56TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,837
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Product details
Overview
MAX4803ETN+ from Maxim Integrated is an 8-channel, high-voltage, low-charge-injection SPST analog switch IC designed for ultrasound imaging transducer multiplexing and industrial printer head control. It supports VPP/VNN supplies up to +100V/–100V (200V total), delivers 22Ω typical on-resistance, –77dB off-isolation at 5MHz, and operates with digital interface voltage VDD from +2.7V to +13.2V.
For engineers reviewing the MAX4803ETN+ datasheet, MAX4803ETN+ pinout, MAX4803ETN+ application, or MAX4803ETN+ equivalent, key selection criteria include high-voltage analog signal range (VNN +10V to VPP –10V), integrated bleed resistors for capacitive load discharge, daisy-chainable serial interface, power-on reset behavior, and compatibility with Supertex HV232 in TQFN-48 packaging.
Technical Context
The MAX4803ETN+ implements an 8-bit serial shift register with transparent latch, controlled via DIN, CLK, LE (active-low), and CLR inputs. All digital inputs tolerate up to +13.2V independent of VDD, enabling direct interfacing with higher-voltage microcontrollers. The device uses BCDMOS process technology to achieve low charge injection (350pC) and low on-capacitance (4–18pF off, 20–56pF on).
It supports flexible high-voltage supply configurations: +100V/–100V, +185V/–15V, or +40V/–160V - with VPP – VNN ≤ 200V enforced. Each channel features matched COM/NO terminals, and the MAX4803ETN+ variant includes integrated 35kΩ bleed resistors tied to RGND for automatic discharge of piezoelectric transducer capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VPP/VNN Supply Range | +40V to +185V / –15V to –160V; enables asymmetric high-voltage biasing up to 200V differential for ultrasound transmit/receive paths. |
| On-Resistance (RONS) | 22Ω typical at +100V/–100V, 5mA; ensures minimal signal attenuation and thermal rise in high-power analog switching. |
| Off-Isolation | –77dB at 5MHz; suppresses crosstalk between active and inactive channels in multi-element transducer arrays. |
| Charge Injection | 350pC typical; minimizes voltage glitch on sensitive analog nodes during switching, critical for precision echo signal integrity. |
| Switching Frequency | 50kHz max output switching frequency; supports rapid beam steering and pulse sequencing in real-time imaging systems. |
| Digital Input Tolerance | +13.2V tolerant DIN/CLK/LE/CLR; eliminates level-shifting circuitry when interfacing with 5V or 12V controllers. |
| Power-On Reset | Ensures all 8 switches default to open state at startup; prevents unintended high-voltage connection during system initialization. |
Pinout & Package
MAX4803ETN+ is housed in a 48-pin TQFN package (7mm × 7mm, 0.5mm pitch) with exposed paddle connected to VNN for thermal management. Pin functions are identical to MAX4802CCM/MAX4802CTM per Maxim's pin compatibility documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM7 | Analog common terminals | Eight independent high-voltage switch inputs; each connects to transducer element or print head driver node. |
| NO0–NO7 | Analog normally-open terminals | Eight corresponding outputs routed to HV amplifier or bias network; open-circuit until enabled via serial latch. |
| VPP / VNN | High-voltage supply rails | Supports ±100V operation; requires 0.1µF ceramic bypass capacitors placed near pins to stabilize transient current demands. |
| VDD | Digital supply | +2.7V to +13.2V logic rail; powers internal shift register, latch, and interface logic without affecting analog performance. |
| DIN / CLK / LE / CLR | Serial control interface | 4-wire daisy-chainable interface; LE active-low loads shift register into latch; CLR high resets all switches open. |
| DOUT | Serial data output | Enables cascading multiple devices; outputs DIN delayed by 8 clocks, supporting synchronized multi-chip configuration. |
| RGND | Bleed resistor reference | Internal connection point for 35kΩ bleed resistors on all COM/NO terminals; must be externally tied to system ground or bias reference. |
| GND | Digital ground | Logic ground reference; separate from RGND to avoid noise coupling into analog discharge path. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 35kΩ bleed resistors | Discharges piezoelectric transducer capacitance automatically after switch turn-off, eliminating external RC networks and reducing board area. |
| Low-charge-injection (350pC) | Minimizes voltage disturbance on high-impedance analog nodes, preserving signal fidelity in receive-path ultrasound front-ends. |
| DC to 10MHz analog bandwidth | Supports wideband ultrasonic pulse transmission and reception without amplitude or phase distortion across clinical imaging frequencies. |
| Pin-compatible with HV232 | Enables drop-in replacement of Supertex HV232 in existing TQFP-48 layouts; same pin mapping and functional behavior simplifies redesign. |
| Power-on reset (POR) | Guarantees fail-safe open-state initialization, preventing inadvertent high-voltage short circuits during power-up sequencing. |
Applications
| Ultrasound Transducer Multiplexing | Industrial Inkjet Print Head Control |
|---|---|
Use Scenario: Selecting individual elements in a 128-element linear array for phased-array beamforming and echo reception. IC Role / Device Role / Timing Role: High-voltage SPST switch controlling connection between transducer element and HV transmit/receive circuitry. Use Value: Enables precise time-of-flight delay control with <5µs turn-on/turn-off timing and <350pC charge injection to preserve weak echo signal integrity. |
Use Scenario: Driving high-voltage pulses to piezoelectric actuators in wide-format industrial inkjet printheads. IC Role / Device Role / Timing Role: Isolating and routing ±100V drive signals to individual nozzles under microcontroller serial command. Use Value: Integrated 35kΩ bleed resistors discharge nozzle capacitance between firing cycles, ensuring consistent droplet ejection timing and volume. |
| Medical Imaging System Scalability | High-Voltage Test Equipment Switching |
Use Scenario: Expanding channel count in portable ultrasound systems using daisy-chained MAX4803ETN+ devices. IC Role / Device Role / Timing Role: Serially configurable analog switch providing scalable I/O expansion without additional GPIO resources. Use Value: DOUT-to-DIN daisy chaining allows single microcontroller to control up to 64+ channels with minimal wiring and timing overhead. |
Use Scenario: Routing high-voltage test signals between DUT ports and measurement instruments in automated test fixtures. IC Role / Device Role / Timing Role: Precision analog switch enabling safe, repeatable connection of ±100V sources to device-under-test terminals. Use Value: –77dB off-isolation at 5MHz prevents signal leakage between test channels, ensuring measurement accuracy in multi-port validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Supertex HV232FG | Same pinout and function; lacks integrated bleed resistors and requires external 35kΩ resistors to RGND. | Requires PCB layout changes for external bleed network; not suitable for space-constrained ultrasound modules. | Select MAX4803ETN+ when minimizing external components and board area is critical for medical-grade miniaturization. |
| Maxim MAX4802CCM | Identical electrical specs and pinout; differs only in TQFP-48 package vs. MAX4803ETN+'s TQFN-48; same RGND and bleed resistor implementation. | TQFP offers easier rework and visual inspection; TQFN provides superior thermal performance and smaller footprint. | Choose MAX4803ETN+ for thermally demanding, high-density ultrasound PCBs where exposed paddle-to-VNN improves heat dissipation. |
Compared with HV232FG, MAX4803ETN+ eliminates external bleed resistors and reduces component count; compared with MAX4802CCM, it delivers identical functionality in a thermally optimized TQFN package ideal for compact medical electronics.
Availability
MAX4803ETN+ is available at Aetrix Electronics and suitable for ultrasound imaging systems, industrial inkjet printers, and high-voltage test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX4803ETN+ 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 high-voltage ICs for medical, industrial, and communications applications.
The MAX4800 family was engineered specifically for high-reliability, high-voltage analog switching in ultrasound and printing - emphasizing low charge injection, robust isolation, and seamless integration with legacy Supertex-based systems.
FAQ
What high-voltage supply configurations does the MAX4803ETN+ support?
The MAX4803ETN+ supports three standard VPP/VNN combinations: +100V/–100V, +185V/–15V, and +40V/–160V - all constrained by VPP – VNN ≤ 200V. It tolerates asymmetric supplies, enabling optimization for specific transducer bias requirements. The MAX4803ETN+ maintains specified RONS, isolation, and timing across these ranges, verified per its Electrical Characteristics table.
Does the MAX4803ETN+ require external bleed resistors?
No. The MAX4803ETN+ integrates 35kΩ bleed resistors on every COM and NO terminal, connected internally to the RGND pin. This eliminates the need for external resistors used in alternatives like HV232, reducing bill-of-materials count and PCB area. RGND must be externally connected to system ground or a defined reference potential for proper discharge operation.
How does the serial interface of the MAX4803ETN+ enable daisy-chaining?
The MAX4803ETN+ features a DOUT pin that outputs the DIN signal delayed by eight clock cycles. By connecting DOUT of one device to DIN of the next, and sharing CLK, LE, and CLR lines, up to dozens of MAX4803ETN+ units can be cascaded. A single 8×N-bit data stream configures all devices, and pulsing LE simultaneously updates all latches - enabling synchronized switching across large transducer arrays.
What is the purpose of the RGND pin on the MAX4803ETN+?
The RGND pin on the MAX4803ETN+ serves as the reference node for its integrated 35kΩ bleed resistors. All bleed resistors connect each COM and NO terminal to RGND. Unlike GND (digital ground), RGND is isolated to prevent switching noise from coupling into the discharge path. It must be externally tied to a clean, low-impedance reference - typically system ground - to ensure reliable capacitive load discharge.
Is the MAX4803ETN+ a direct replacement for Supertex HV232?
Yes. The MAX4803ETN+ is explicitly documented as a drop-in replacement for Supertex HV232 in TQFP and TQFN packages. Its pinout, logic interface, electrical specifications (including RONS, isolation, and timing), and functional behavior match HV232 - with the added benefit of integrated bleed resistors. No PCB layout changes are required when upgrading from HV232 to MAX4803ETN+ in compatible packages.
MAX4803ETN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TQFN (8x8)
MAX4803ETN+ FAQ
1.How can I place an order for MAX4803ETN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4803ETN+ 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 MAX4803ETN+ reliable?
The price and inventory of MAX4803ETN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4803ETN+ is usually 5 days.
3.What payment methods are accepted for MAX4803ETN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4803ETN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4803ETN+?
MAX4803ETN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4803ETN+ 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 MAX4803ETN+?
For technical support, including MAX4803ETN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4803ETN+ requirements.
6.How does Aetrix verify that MAX4803ETN+ is sourced from the original manufacturer or authorized distributors?
All MAX4803ETN+ 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 MAX4803ETN+ meets industry standards.
7.What is the process for return or replacement of MAX4803ETN+?
All MAX4803ETN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4803ETN+, 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 MAX4803ETN+ part is unused and in its original packaging.
Return procedure for MAX4803ETN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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