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Analog Devices Inc./Maxim Integrated MAX4800CTM+
- Part No.:
- MAX4800CTM+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
MAX4800CTM+.pdf
- Description:
- IC SWITCH SPST-NOX8 38OHM 48TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,826
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Product details
Overview
The MAX4800CTM+ from Maxim Integrated is an 8-channel, high-voltage SPST analog switch IC designed for ultrasonic imaging transducer multiplexing and industrial printer head control. It features low-charge-injection (350pC), 22Ω on-resistance, ±100V/±185V/±40V high-voltage supply flexibility (VPP/VNN), and a serial digital interface with +13.2V-tolerant inputs. It operates across 0°C to +70°C and supports DC–10MHz analog signal switching.
For engineers reviewing the MAX4800CTM+ datasheet, MAX4800CTM+ pinout, MAX4800CTM+ application, or MAX4800CTM+ equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases in medical ultrasound and precision printing, and validated drop-in alternatives to Supertex HV20220.
Technical Context
The MAX4800CTM+ implements eight independent BCDMOS-based SPST switches controlled via an 8-bit serial shift register and programmable latch with active-low LE and asynchronous CLR. Its power-on reset ensures all switches default to open at startup, eliminating unintended conduction during system initialization.
It accepts asymmetric high-voltage supplies up to VPP − VNN = 200V (e.g., +100V/−100V, +185V/−15V, +40V/−160V), while its digital interface runs from a separate +2.7V to +13.2V VDD rail. All logic inputs (DIN, CLK, LE, CLR) are +13.2V tolerant regardless of VDD level, enabling direct interfacing with higher-voltage microcontrollers or FPGAs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | VNN +10V to VPP −10V - enables full utilization of high-voltage rails while maintaining safe margin against breakdown |
| On-Resistance (RONS) | 22Ω typical - minimizes voltage drop and power loss in high-current transducer drive paths |
| Charge Injection | 350pC - reduces image artifacts and baseline drift in ultrasound receive chains |
| Off-Isolation | −77dB at 5MHz - prevents crosstalk between adjacent channels in dense transducer arrays |
| Switching Frequency | 50kHz max output switching - supports rapid beam steering and multi-line scanning |
| Digital Input Tolerance | +13.2V independent of VDD - eliminates level-shifting requirements for mixed-supply systems |
| Quiescent Current (VDD) | 10µA - enables low-power standby modes in battery-assisted portable ultrasound systems |
Pinout & Package
The MAX4800CTM+ is packaged in a 48-pin TQFP (7mm × 7mm, lead-free, RoHS-compliant) with exposed pad for thermal management. Pin 1 is located at top-left corner (marked by dot or beveled edge).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM7 | Analog common terminals (8) | Connect to transducer elements or print head drivers; each pairs with corresponding NOx |
| NO0–NO7 | Analog normally-open terminals (8) | Route switched high-voltage signals to receiver front-ends or driver outputs |
| VPP / VNN | High-voltage supply rails | Support asymmetric operation up to 200V differential; require local 0.1µF ceramic bypassing |
| VDD / GND | Digital supply and ground | Isolate logic domain from high-voltage domain; enable independent power sequencing |
| DIN / CLK / LE / CLR / DOUT | Serial control interface | Enable daisy-chaining of multiple devices; LE active-low latching prevents clock feedthrough glitches |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in replacement for HV20220 | Pins, timing, and functional behavior match Supertex HV20220FG - no PCB or firmware changes required |
| Low-charge-injection switching | 350pC typical - preserves signal integrity in sensitive ultrasound echo amplification stages |
| Wide high-voltage supply range | VPP/VNN options include +100V/−100V, +185V/−15V, +40V/−160V - accommodates diverse transducer biasing schemes |
| DC to 10MHz analog bandwidth | Supports both pulsed excitation and wideband echo reception in diagnostic imaging systems |
| Power-on reset | Guarantees all switches start open - prevents inadvertent transducer activation during boot |
Applications
| Ultrasound Imaging Systems | Industrial Inkjet Printers |
|---|---|
Use Scenario: Multiplexing 128-element linear array transducers for beamforming and echo reception. IC Role / Device Role / Timing Role: High-voltage analog switch matrix routing transmit pulses and receive echoes per channel under serial FPGA control. Use Value: 22Ω RONS and −77dB off-isolation minimize inter-channel coupling and preserve SNR in high-resolution B-mode imaging. |
Use Scenario: Selecting individual piezoelectric print head drivers in high-speed continuous inkjet systems. IC Role / Device Role / Timing Role: Precision SPST switch enabling fast, low-distortion voltage switching to nozzle electrodes. Use Value: 350pC charge injection prevents droplet misdirection; 50kHz switching supports >10kHz line rates. |
| Portable Diagnostic Scanners | Automated Test Equipment (ATE) |
Use Scenario: Battery-powered handheld ultrasound units requiring low quiescent power and robust ESD tolerance. IC Role / Device Role / Timing Role: Low-leakage (10µA IDDQ), high-voltage switch managing transducer bias and signal path selection. Use Value: 10µA VDD quiescent current extends battery life; +13.2V-tolerant inputs simplify host MCU interface design. |
Use Scenario: High-voltage signal routing in semiconductor parametric testers handling ±100V device characterization. IC Role / Device Role / Timing Role: Precision analog switch isolating DUT connections during voltage sweeps and leakage measurements. Use Value: VNN/VPP asymmetry support (+185V/−15V) enables single-rail negative bias generation; 22Ω RONS ensures measurement accuracy. |
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 HV20220FG | Pin-compatible, identical 48-pin PLCC/TQFP footprint and serial interface timing; same 22Ω RONS, but no integrated power-on reset | Lacks guaranteed open-at-power-up behavior - requires external reset coordination in safety-critical systems | Select HV20220FG only if legacy board reuse is mandatory and POR functionality is handled externally |
| Maxim MAX4802CCM+ | Same pinout and interface, but adds integrated 35kΩ bleed resistors on all COM/NO terminals and RGND pin | Required where piezoelectric transducer discharge between pulses is critical (e.g., phased-array transmit burst recovery) | Choose MAX4802CCM+ when capacitive load discharge is needed; otherwise MAX4800CTM+ offers lower cost and simpler layout |
Compared with HV20220FG, MAX4800CTM+ adds guaranteed power-on reset and tighter charge injection spec; compared with MAX4802CCM+, it omits bleed resistors and RGND, reducing component count and PCB area in non-capacitive-load applications.
Availability
The MAX4800CTM+ is available at Aetrix Electronics and suitable for ultrasound imaging systems, industrial printers, and automated test equipment requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX4800CTM+ 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) is a leader in high-performance analog, mixed-signal, and power management ICs, serving medical, industrial, and communications markets since 1983.
The MAX4800 family was engineered specifically for high-reliability, high-voltage analog switching in ultrasound transducer arrays and precision print head control - emphasizing low charge injection, rail-to-rail signal handling, and robust serial configurability.
FAQ
What is the maximum allowable VPP − VNN voltage for the MAX4800CTM+?
The MAX4800CTM+ supports a maximum VPP − VNN differential of 200V, as confirmed in Absolute Maximum Ratings and Electrical Characteristics tables. Valid configurations include +100V/−100V, +185V/−15V, and +40V/−160V. Exceeding 200V risks permanent damage, even if individual rail limits are not breached.
Does the MAX4800CTM+ require specific power supply sequencing?
No - the MAX4800CTM+ does not mandate strict VDD/VPP/VNN sequencing. However, analog inputs (COMx/NOx) must remain unconnected or within VNN ≤ V ≤ VPP during power-up/down to prevent latch-up. Local 0.1µF ceramic bypassing on all supplies is mandatory per datasheet recommendations.
Is the MAX4800CTM+ pin-compatible with the Supertex HV20220?
Yes - the MAX4800CTM+ is explicitly documented as a pin-compatible, drop-in replacement for Supertex HV20220FG in the 48-pin TQFP package. Pin functions, electrical timing, and serial interface behavior match, enabling direct substitution without layout or firmware modification.
What is the purpose of the DOUT pin on the MAX4800CTM+?
The DOUT pin provides serial data output delayed by eight clock cycles, enabling daisy-chaining of multiple MAX4800CTM+ devices. When DIN data is shifted in, DOUT reflects the oldest bit, allowing cascaded configuration of large switch matrices using a single SPI bus and shared CLK/LE/CLR lines.
How does the power-on reset function operate in the MAX4800CTM+?
The MAX4800CTM+ integrates an internal power-on reset circuit that forces the 8-bit latch to zero at power-up, ensuring all eight switches default to the open (non-conducting) state. This behavior is guaranteed across the full 0°C to +70°C operating range and eliminates risk of unintended transducer activation or print head firing during system startup.
MAX4800CTM+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 8
- On-State Resistance (Max):
- 38Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.9Ohm
- Voltage - Supply, Single (V+):
- 2.7V ~ 13.2V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 5µs, 5µs
- -3db Bandwidth:
- -
- Charge Injection:
- 820pC
- Channel Capacitance (CS(off), CD(off)):
- 18pF
- Current - Leakage (IS(off)) (Max):
- 4µA
- Crosstalk:
- -80dB @ 5MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TQFN (6x6)
MAX4800CTM+ FAQ
1.How can I place an order for MAX4800CTM+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4800CTM+ 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 MAX4800CTM+ reliable?
The price and inventory of MAX4800CTM+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4800CTM+ is usually 5 days.
3.What payment methods are accepted for MAX4800CTM+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4800CTM+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4800CTM+?
MAX4800CTM+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4800CTM+ 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 MAX4800CTM+?
For technical support, including MAX4800CTM+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4800CTM+ requirements.
6.How does Aetrix verify that MAX4800CTM+ is sourced from the original manufacturer or authorized distributors?
All MAX4800CTM+ 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 MAX4800CTM+ meets industry standards.
7.What is the process for return or replacement of MAX4800CTM+?
All MAX4800CTM+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4800CTM+, 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 MAX4800CTM+ part is unused and in its original packaging.
Return procedure for MAX4800CTM+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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