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Analog Devices Inc./Maxim Integrated MAX4802CXZ+T
- Part No.:
- MAX4802CXZ+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 26-LFBGA, CSBGA
- Datasheet:
-
MAX4802CXZ+T.pdf
- Description:
- IC SW SPST-NOX8 38OHM 72CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,640
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Product details
Overview
The MAX4802CXZ+T 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 integrated 35kΩ bleed resistors on all COM/NO terminals, supports VPP/VNN up to +40V/–160V (200V total), delivers ≤27Ω on-resistance at 200mA, and operates with digital supply VDD from +2.7V to +13.2V. Its low-charge-injection (350pC) architecture ensures minimal signal disturbance in precision pulsed applications.
For engineers reviewing the MAX4802CXZ+T datasheet, MAX4802CXZ+T pinout, MAX4802CXZ+T application, or MAX4802CXZ+T equivalent, key selection criteria include high-voltage rail flexibility (±100V, +185V/–15V, +40V/–160V), 5MHz off-isolation (–77dB), daisy-chainable serial interface, RGND-referenced bleed resistor grounding, and compatibility with Supertex HV232PJ/HV230GA in 26-bump CSBGA packaging.
Technical Context
The MAX4802CXZ+T implements eight independent BCDMOS-based SPST switches controlled via an 8-bit serial shift register with latch enable (LE) and clear (CLR) inputs. Power-on reset guarantees all switches start open, and digital inputs (DIN, CLK, LE, CLR) tolerate up to +13.2V regardless of VDD level.
Each switch channel integrates dual 35kΩ bleed resistors - one from COM_ to RGND and another from NO_ to RGND - enabling automatic discharge of piezoelectric capacitive loads without external components. The RGND terminal must be connected to a dedicated ground reference separate from GND for proper bleed resistor operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VPP/VNN Supply Range | +40V to –160V (200V max differential); enables single-supply operation up to +200V when VNN = GND |
| On-Resistance (RONS) | ≤27Ω at 200mA, VPP=+160V/VNN=–40V; ensures minimal voltage drop and power loss in high-current switching |
| Off-Isolation | –77dB at 5MHz; suppresses crosstalk between active and inactive channels in broadband ultrasound signals |
| Charge Injection | 350pC typical; limits transient voltage spikes at switch transitions critical for low-noise echo reception |
| Bleed Resistor Value | 35kΩ per terminal (COM_/NO_ to RGND); discharges piezo capacitance without external parts or timing control |
| Digital Input Tolerance | +13.2V absolute max on DIN/CLK/LE/CLR; allows direct interfacing with 12V microcontrollers or FPGAs |
| Switching Frequency | 50kHz max output switching frequency; supports rapid transducer element sequencing in real-time imaging |
Pinout & Package
The MAX4802CXZ+T is housed in a 26-bump Chip-Scale Ball Grid Array (CSBGA) package measuring 3.5mm × 3.5mm with 0.5mm pitch, optimized for space-constrained medical probe and print-head modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM7 | Analog common terminals (8) | High-voltage current paths connecting to transducer elements or print-head drivers; rated for VNN to VPP range |
| NO0–NO7 | Analog normally-open terminals (8) | Switched outputs routed to receive amplifiers or driver stages; each includes internal 35kΩ bleed to RGND |
| VPP / VNN | Positive/negative high-voltage supplies | Independent rails supporting asymmetric configurations (e.g., +40V/–160V); require local 0.1µF ceramic bypassing |
| VDD | Digital logic supply | +2.7V to +13.2V operation; powers shift register, latch, and interface logic independently of analog rails |
| GND | Digital ground reference | Return path for VDD and logic signals; electrically isolated from RGND to prevent bleed resistor interference |
| RGND | Bleed resistor ground | Dedicated analog ground for 35kΩ resistors; must be connected separately from GND to avoid leakage path errors |
| DIN / CLK / LE / CLR | Serial control interface | CMOS-compatible inputs tolerant to +13.2V; support daisy-chaining multiple devices using DOUT-to-DIN connection |
| DOUT | Serial data output | Shift-register output delayed by 8 clocks; enables cascaded configuration without additional glue logic |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bleed resistors | 35kΩ per COM/NO terminal referenced to dedicated RGND; eliminates need for external discharge networks in piezo systems |
| Wide high-voltage supply range | VPP/VNN combinations up to 200V differential including +100V/–100V, +185V/–15V, +40V/–160V; supports legacy and next-gen transducer bias schemes |
| Low-charge-injection switching | 350pC typical; reduces settling time and baseline drift in sensitive ultrasound receiver front-ends |
| Pin-compatible replacement | Direct drop-in for Supertex HV232PJ (28-pin PLCC) and HV230GA (26-bump CSBGA); preserves layout in second-source designs |
| Power-on reset safety | Guarantees all 8 switches initialize in OFF state; prevents unintended high-voltage activation during system startup |
Applications
| Ultrasound Transducer Multiplexing | Industrial Print-Head Control |
|---|---|
Use Scenario: Selecting individual piezoelectric elements in phased-array probes for beam steering and focusing. IC Role / Device Role / Timing Role: High-voltage SPST switch managing bidirectional analog signal paths between transducer elements and transmit/receive circuitry. Use Value: Integrated 35kΩ bleed resistors rapidly discharge element capacitance between pulses, enabling faster frame rates and reduced ring-down artifacts. |
Use Scenario: Driving high-voltage waveforms to thermal or piezoelectric print-head nozzles in wide-format inkjet printers. IC Role / Device Role / Timing Role: Precision analog switch routing pulsed high-voltage drive signals to selected nozzle banks under microcontroller command. Use Value: 27Ω on-resistance and 50kHz switching capability ensure accurate waveform fidelity and high nozzle firing density without thermal derating. |
| Capacitive Load Discharge Systems | High-Voltage Test Equipment |
Use Scenario: Automatic discharge of charged capacitors in automated test fixtures before contactor closure or measurement. IC Role / Device Role / Timing Role: Controlled high-voltage switch with built-in bleed path to safely dissipate stored energy prior to safe handling. Use Value: Eliminates external resistor networks and timing controllers; RGND-referenced bleed ensures predictable discharge time constants across temperature. |
Use Scenario: Signal routing and isolation in programmable high-voltage source-measure units (SMUs) and semiconductor testers. IC Role / Device Role / Timing Role: Low-crosstalk (–80dB), high-isolation (–77dB @ 5MHz) analog switch enabling precise multi-channel stimulus/response separation. Use Value: 4pF–18pF off-capacitance and <5µs turn-on/turn-off times support accurate high-frequency parametric measurements without guard-path complexity. |
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 |
|---|---|---|---|
| HV230GA | Same 26-bump CSBGA package and pinout; identical bleed resistor value (35kΩ) and VPP/VNN rating; manufactured by Supertex (now Microchip) | Legacy second-source part; lacks Maxim's enhanced ESD protection and tighter RONS matching (±5% vs ±20%) | Select HV230GA only for existing HV232-compatible designs requiring unchanged bill-of-materials and qualification status. |
| MAX4802CQI+ | Same functionality and bleed resistors; packaged in 28-pin PLCC instead of 26-bump CSBGA; requires PCB layout change and larger footprint | Better mechanical robustness and hand-solderability; suited for prototyping, service modules, or non-space-constrained industrial controls | Choose MAX4802CQI+ when board area is not constrained and through-hole or PLCC assembly is preferred over CSP mounting. |
Compared with HV230GA and MAX4802CQI+, the MAX4802CXZ+T offers the smallest form factor (3.5mm × 3.5mm), guaranteed lower charge injection (350pC vs unspecified for HV230GA), and tighter on-resistance matching - making it optimal for miniaturized ultrasound probes and high-density print-head driver ICs where parasitic control and thermal management are critical.
Availability
The MAX4802CXZ+T is available at Aetrix Electronics and suitable for ultrasound imaging systems, industrial inkjet printer controllers, and high-voltage test instrumentation requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX4802CXZ+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The MAX4800/MAX4801/MAX4802 product line was engineered specifically for high-voltage, low-distortion analog switching in ultrasound and precision printing - emphasizing charge injection control, flexible rail operation, and integrated safety features like bleed resistors and power-on reset.
FAQ
What is the function of the RGND pin on the MAX4802CXZ+T?
The RGND pin on the MAX4802CXZ+T serves as the dedicated return path for the integrated 35kΩ bleed resistors connected to each COM_ and NO_ terminal. Unlike the main GND pin used for digital logic, RGND must be connected to a clean, low-noise analog ground separate from GND to ensure accurate discharge behavior and prevent interference with the shift register or latch operation. Failure to isolate RGND from GND may cause unpredictable switch leakage or timing anomalies.
Can the MAX4802CXZ+T operate with VNN tied to ground?
Yes, the MAX4802CXZ+T can operate with VNN tied to ground in single-supply configurations, supporting VPP up to +200V. This mode is explicitly supported per the datasheet and maintains full functionality including bleed resistor operation, provided RGND is properly connected and VPP–VNN does not exceed 200V. The device retains its 27Ω on-resistance and 350pC charge injection performance under this condition, making it suitable for high-side switching architectures in print-head drivers.
How does the MAX4802CXZ+T differ from the MAX4800CXZ and MAX4801CXZ variants?
The MAX4802CXZ+T differs from MAX4800CXZ and MAX4801CXZ by integrating 35kΩ bleed resistors on all COM/NO terminals and featuring the RGND pin - neither present in MAX4800CXZ or MAX4801CXZ. Additionally, MAX4802CXZ+T is specified as a drop-in replacement for Supertex HV232/HV230GA, while MAX4800CXZ replaces HV20220 and MAX4801CXZ replaces HV20320. All three share identical serial interface timing, package options, and temperature range (0°C to +70°C).
What is the maximum clock frequency supported by the MAX4802CXZ+T serial interface?
The MAX4802CXZ+T supports a maximum CLK frequency of 10MHz when VDD ≥ +4.5V and 4MHz when VDD < +4.5V, as specified in the Timing Characteristics table. This allows full 8-bit data loading in under 1µs, enabling rapid reconfiguration of all eight switches - critical for real-time beamforming in ultrasound systems where channel selection latency directly impacts image resolution and frame rate.
Does the MAX4802CXZ+T require specific power-supply sequencing during startup?
No, the MAX4802CXZ+T does not require strict power-supply sequencing for VDD, VPP, and VNN. However, analog inputs (COM_, NO_) must remain unconnected or held within VNN to VPP during power-up and power-down to prevent latch-up or damage. The internal power-on reset ensures all switches default to OFF regardless of supply ramp order, and the 0.1µF ceramic bypass capacitors on VDD, VPP, and VNN must be placed as close as possible to their respective pins to maintain stability.
MAX4802CXZ+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- 72-CSBGA (6x5.35)
MAX4802CXZ+T FAQ
1.How can I place an order for MAX4802CXZ+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4802CXZ+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 MAX4802CXZ+T reliable?
The price and inventory of MAX4802CXZ+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4802CXZ+T is usually 5 days.
3.What payment methods are accepted for MAX4802CXZ+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4802CXZ+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4802CXZ+T?
MAX4802CXZ+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4802CXZ+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 MAX4802CXZ+T?
For technical support, including MAX4802CXZ+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4802CXZ+T requirements.
6.How does Aetrix verify that MAX4802CXZ+T is sourced from the original manufacturer or authorized distributors?
All MAX4802CXZ+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 MAX4802CXZ+T meets industry standards.
7.What is the process for return or replacement of MAX4802CXZ+T?
All MAX4802CXZ+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4802CXZ+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 MAX4802CXZ+T part is unused and in its original packaging.
Return procedure for MAX4802CXZ+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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