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Analog Devices Inc./Maxim Integrated MAX4802CXZ+
- Part No.:
- MAX4802CXZ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 26-LFBGA, CSBGA
- Datasheet:
-
MAX4802CXZ+.pdf
- Description:
- IC SW SPST-NOX8 38OHM 72CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,867
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Product details
Overview
MAX4802CXZ+ from Maxim Integrated is an 8-channel, high-voltage SPST analog switch IC designed for ultrasound 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 +100V/–100V, and operates with digital supply VDD from +2.7V to +13.2V.
For engineers reviewing the MAX4802CXZ+ datasheet, MAX4802CXZ+ pinout, MAX4802CXZ+ application, or MAX4802CXZ+ equivalent, this page provides verified technical context, real-world switching performance data, confirmed package mapping to 26-bump CSBGA, and validated drop-in alternatives for high-voltage analog routing in medical and industrial systems.
Technical Context
The MAX4802CXZ+ implements eight independent BCDMOS-based SPST switches controlled via an 8-bit serial shift register with latch enable (LE) and clear (CLR). Its internal architecture includes power-on reset that forces all switches open at startup, and RGND-referenced 35kΩ bleed resistors on each analog terminal to discharge piezoelectric loads.
Digital inputs (DIN, CLK, LE, CLR) tolerate up to +13.2V regardless of VDD level, enabling direct interfacing with higher-voltage microcontrollers. Analog signal range spans VNN +10V to VPP –10V, with off-isolation of –77dB at 5MHz and charge injection limited to 350pC - critical for low-distortion ultrasonic pulse transmission.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VPP/VNN Range | +40V/–160V to +185V/–15V (200V max differential); enables flexible HV biasing for piezo drivers and print-head arrays |
| RONS (Typ) | 22Ω at +100V/–100V, 5mA; ensures minimal signal attenuation in wideband analog paths |
| Off-Isolation | –77dB at 5MHz; suppresses crosstalk between adjacent transducer channels during echo reception |
| Charge Injection | 350pC; limits voltage glitch on capacitive loads like ultrasound transducers during switching |
| Bleed Resistors | 35kΩ per COM/NO terminal to RGND; actively discharges stored energy without external components |
| Logic Input Tolerance | +13.2V tolerant DIN/CLK/LE/CLR; eliminates level-shifting when driven by 5V or 12V controllers |
| Supply Quiescent Current | 15µA on VDD; reduces standby power in battery-backed or always-on medical equipment |
Pinout & Package
MAX4802CXZ+ uses a 26-bump wafer-level chip-scale package (CSBGA), RoHS-compliant, with 0.5mm pitch and bottom-side thermal pad. Pin mapping follows the standard MAX4802 CSBGA layout per Maxim document X07265-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM7 | Analog common terminals | Eight independent high-voltage input nodes; each connects to transducer or print-head driver stage |
| NO0–NO7 | Analog normally-open terminals | Eight output nodes routed to HV supply rails; closed only when corresponding bit = 1 in latch |
| RGND | Bleed resistor reference | Ground return for all integrated 35kΩ bleed resistors; must be connected to system ground |
| VPP / VNN | High-voltage supplies | Separate positive/negative HV rails; support asymmetric configurations (e.g., +40V/–160V) |
| VDD / GND | Digital supply and ground | +2.7V to +13.2V logic domain; decoupling required with ≥0.1µF ceramic capacitor |
| DIN / CLK / LE / CLR / DOUT | Serial interface signals | 4-wire daisy-chainable control; LE active-low updates latch; CLR high resets all switches open |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bleed resistors | 35kΩ per switch terminal to RGND - eliminates need for external discharge networks in ultrasound probe modules |
| Wide HV supply flexibility | VPP – VNN ≤ 200V with asymmetric options (+40V/–160V, +100V/–100V, +185V/–15V) - simplifies power supply design across platforms |
| Low-charge-injection switching | 350pC typical - preserves signal integrity during fast switching of high-impedance piezo elements |
| High off-isolation | –77dB @ 5MHz - prevents channel-to-channel interference in multi-element transducer arrays |
| +13.2V-tolerant digital inputs | CLK/DIN/LE/CLR operate independently of VDD level - enables direct connection to 12V FPGA I/O or microcontroller GPIO |
Applications
| Ultrasound Transducer Multiplexing | Industrial Print-Head Driver Control |
|---|---|
|
Use Scenario: Selecting individual elements in a 128-element linear array for beam steering and focusing. IC Role / Device Role / Timing Role: High-voltage SPST switch routing HV pulses to specific transducer elements under serial timing control. Use Value: Integrated 35kΩ bleed resistors discharge element capacitance between pulses, eliminating ghost echoes and enabling >10MHz bandwidth operation. |
Use Scenario: Driving multiple solenoid-based inkjet nozzles in high-speed label printers. IC Role / Device Role / Timing Role: Isolating 100V print-head drivers from shared HV bus using digitally latched switch states. Use Value: 22Ω on-resistance minimizes voltage drop across switch path, ensuring consistent nozzle actuation energy across all 8 channels. |
| Capacitive Load Discharge Management | High-Voltage Signal Routing |
|
Use Scenario: Safely discharging piezoelectric transducers after diagnostic scan completion. IC Role / Device Role / Timing Role: Active discharge path via internal bleed resistors referenced to RGND during idle state. Use Value: Eliminates need for external bleeder FETs or RC networks, reducing BOM count and PCB area in portable ultrasound units. |
Use Scenario: Routing ±100V analog test signals in automated semiconductor test equipment. IC Role / Device Role / Timing Role: Low-crosstalk, high-isolation analog switch matrix for precision HV signal selection. Use Value: –77dB off-isolation at 5MHz prevents measurement contamination between adjacent DUT channels during parallel testing. |
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 |
|---|---|---|---|
| HV232PJ | Same 28-pin PLCC package; no integrated bleed resistors; requires external discharge network | Limited to applications where external bleed circuitry is acceptable and board space permits | Select HV232PJ only if legacy PLCC footprint compatibility is mandatory and RGND routing is impractical |
| MAX4802CCM+ | 48-pin TQFP package; identical electrical specs and bleed resistor implementation | Better thermal dissipation and higher pin-count routing flexibility; not suitable for space-constrained handheld devices | Choose MAX4802CCM+ when thermal management or daisy-chained multi-device layouts require larger package footprint |
Compared with HV232PJ and MAX4802CCM+, the MAX4802CXZ+ uniquely combines wafer-level CSBGA miniaturization, integrated 35kΩ bleed resistors, and full functional equivalence - making it optimal for next-generation portable ultrasound probes and compact industrial print engines where size, component count, and reliability are co-prioritized.
Availability
MAX4802CXZ+ is available at Aetrix Electronics and suitable for ultrasound imaging systems, industrial printer head drivers, and high-voltage test equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX4802CXZ+ 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/MAX4801/MAX4802 family targets high-voltage analog switching in ultrasound and printing - delivering low-charge-injection, integrated bleed functionality, and robust serial control for demanding capacitive load environments.
FAQ
What is the function of the RGND pin on the MAX4802CXZ+?
The RGND pin on the MAX4802CXZ+ serves as the dedicated ground reference for all integrated 35kΩ bleed resistors connected to each COM and NO terminal. It must be tied to system ground to enable active discharge of capacitive loads such as piezoelectric transducers. Unlike standard GND, RGND is internally isolated from digital ground to prevent noise coupling into sensitive analog paths - a key design feature confirmed in the MAX4802 functional diagram and pin description tables.
Does the MAX4802CXZ+ support daisy-chaining with other MAX4802 devices?
Yes, the MAX4802CXZ+ supports daisy-chaining via its DOUT pin, which outputs shifted data delayed by eight clock cycles. Multiple MAX4802CXZ+ units can be cascaded by connecting DOUT of one device to DIN of the next, while sharing CLK, LE, and CLR lines. This configuration allows synchronized update of all switches across the chain with a single 8×N-bit serial stream - a capability explicitly documented in Figure 3 and Applications Information section of the MAX4802 datasheet.
What is the maximum analog signal frequency supported by the MAX4802CXZ+?
The MAX4802CXZ+ supports analog signal frequencies from DC to 10MHz, as specified in the Features list and confirmed by –77dB off-isolation measured at 5MHz. Its small-signal on-resistance of 22Ω and low off-capacitance (4–18pF) maintain signal fidelity across this range. Performance degrades above 10MHz due to increasing crosstalk and reduced isolation - values validated in Typical Operating Characteristics plots (toc02) and Electrical Characteristics tables.
How does the power-on reset behavior affect switch state initialization in the MAX4802CXZ+?
The MAX4802CXZ+ incorporates an internal power-on reset circuit that forces all eight switches to the open (OFF) state at power-up, regardless of shift register contents. This ensures safe default behavior in ultrasound and printer applications where unintended HV conduction could damage transducers or cause misfired nozzles. The reset is automatic, requires no external components, and is guaranteed across the full 0°C to +70°C operating range per Absolute Maximum Ratings and Detailed Description sections.
Can the MAX4802CXZ+ operate with a single high-voltage supply (e.g., VNN = GND)?
Yes, the MAX4802CXZ+ supports single-supply operation with VNN tied to GND, allowing VPP up to +200V. This configuration is explicitly permitted in the Detailed Description section, which states: "When VNN is connected to GND (single-supply applications), the devices operate with VPP up to +200V." However, analog inputs must remain within VNN ≤ (VCOM_, VNO_) ≤ VPP during power-up/down, and proper bypassing of VPP to GND with ≥0.1µF ceramic is mandatory to ensure stability.
MAX4802CXZ+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tray
- 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+ FAQ
1.How can I place an order for MAX4802CXZ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4802CXZ+ 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+ reliable?
The price and inventory of MAX4802CXZ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4802CXZ+ is usually 5 days.
3.What payment methods are accepted for MAX4802CXZ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4802CXZ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4802CXZ+?
MAX4802CXZ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4802CXZ+ 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+?
For technical support, including MAX4802CXZ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4802CXZ+ requirements.
6.How does Aetrix verify that MAX4802CXZ+ is sourced from the original manufacturer or authorized distributors?
All MAX4802CXZ+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX4802CXZ+?
All MAX4802CXZ+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4802CXZ+, 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+ part is unused and in its original packaging.
Return procedure for MAX4802CXZ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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