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Analog Devices Inc./Maxim Integrated MAX4802ACXZ+
- Part No.:
- MAX4802ACXZ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 26-LFBGA, CSBGA
- Datasheet:
-
MAX4802ACXZ+.pdf
- Description:
- IC SWITCH OCTAL SPST 26CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,027
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Product details
Overview
The MAX4802ACXZ+ from Maxim Integrated is an 8-channel, high-voltage SPST analog switch IC designed for ultrasound imaging and printer systems. It features low-charge-injection (≤600pC), 20MHz SPI™ serial interface control, integrated 35kΩ bleed resistors on all switch terminals, ±100V/±160V high-voltage supply capability, and operates across 0°C to +70°C.
For engineers reviewing the MAX4802ACXZ+ datasheet, MAX4802ACXZ+ pinout, MAX4802ACXZ+ application, or MAX4802ACXZ+ equivalent, this device delivers precise high-voltage switching with fast digital control, robust off-isolation (-77dB at 5MHz), and guaranteed power-on reset behavior - critical for medical transducer biasing and precision print-head actuation.
Technical Context
The MAX4802ACXZ+ integrates eight independent BCDMOS-based SPST switches, each with COM/NO terminals rated for analog signals from VNN +10V to VPP −10V. Its 8-bit shift register accepts serial data at up to 20MHz (VDD = +5V), with latch-enable (LE) and clear (CLR) inputs enabling synchronized multi-device updates and safe power-up defaults.
Unlike the MAX4800A variant, the MAX4802ACXZ+ includes internal 35kΩ bleed resistors tied to RGND on every COM and NO terminal - a key differentiator enabling automatic discharge of piezoelectric capacitive loads without external components. All digital inputs (DIN, CLK, LE, CLR) are +6V tolerant regardless of VDD level.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Count & Type | 8 independent SPST analog switches with COM/NO topology |
| High-Voltage Supply Range | VPP/VNN = +100V/−100V, +40V/−160V, or +160V/−40V - supports asymmetric rails up to 200V differential |
| On-Resistance (RONS) | 22Ω typical at +25°C, VPP = +100V/VNN = −100V, ICOM = 5mA - ensures minimal signal attenuation in HV signal paths |
| Off-Isolation | −77dB at 5MHz (RL = 50Ω) - suppresses crosstalk between adjacent channels in dense transducer arrays |
| Charge Injection | 600pC max at VPP = +100V/VNN = −100V - preserves signal integrity during fast switching of sensitive analog nodes |
| Serial Interface Speed | 20MHz SPI™ clock rate (VDD = +5V) - enables sub-µs channel reconfiguration for real-time beamforming |
| Bleed Resistors | 35kΩ integrated per switch terminal (COM/NO to RGND) - eliminates need for external discharge networks in ultrasound probe designs |
Pinout & Package
MAX4802ACXZ+ uses a 26-bump CSBGA package (outline 21-0158, land pattern 90-0184), RoHS-compliant, with 0.5mm pitch and thermal resistance θJA = 85°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM7 | Analog common terminals | Eight independent high-voltage switch inputs; each connects to corresponding NO_ when enabled |
| NO0–NO7 | Analog normally-open terminals | Eight high-voltage outputs; only conductive when associated COM_ is activated via serial command |
| DIN, CLK, LE, CLR | Serial control interface | +6V-tolerant digital inputs; enable daisy-chained configuration and synchronous latch update |
| DOUT | Serial data output | Shift-register echo output (8-cycle delay); allows cascading multiple MAX4802ACXZ+ devices |
| VPP / VNN | High-voltage supplies | Independent positive/negative rails supporting up to 200V differential; bypass required with ≥0.1µF ceramic |
| VDD / GND / RGND | Digital supply & references | VDD = +2.7V to +6V logic supply; RGND is dedicated ground for bleed resistors (MAX4802A only) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bleed resistors | 35kΩ per COM/NO terminal referenced to RGND - enables automatic discharge of piezo transducer capacitance without external parts |
| Low-charge-injection switching | ≤600pC at ±100V rail - minimizes voltage glitch on sensitive analog nodes during switching transitions |
| 20MHz SPI™ serial interface | Supports full 8-bit channel control in ≤400ns - meets timing requirements for real-time ultrasound transmit/receive sequencing |
| Power-on reset | Guarantees all switches open at startup - prevents unintended HV conduction during system initialization |
| +6V-tolerant digital inputs | DIN/CLK/LE/CLR operate independently of VDD level - simplifies interfacing with higher-voltage microcontrollers or FPGAs |
Applications
| Ultrasound Transducer Biasing | Industrial Print-Head Control |
|---|---|
Use Scenario: High-voltage pulsing of piezoelectric transducer arrays in portable and cart-based ultrasound systems. IC Role / Device Role / Timing Role: Eight-channel HV analog switch routing bias voltage to individual transducer elements under SPI™-timed control. Use Value: Integrated 35kΩ bleed resistors discharge transducer capacitance between pulses, eliminating external RC networks and reducing PCB area by >30%. |
Use Scenario: Precision activation of thermal inkjet or piezoelectric print heads requiring programmable HV drive sequencing. IC Role / Device Role / Timing Role: Serial-controlled SPST switch enabling per-nozzle voltage selection from multiple HV rails (e.g., +40V/−160V). Use Value: 22Ω on-resistance and −77dB off-isolation ensure accurate voltage delivery and prevent cross-talk between adjacent nozzles. |
| Medical Imaging Beamforming | Automated Test Equipment (ATE) |
Use Scenario: Dynamic element grouping in phased-array ultrasound probes for electronic beam steering and focusing. IC Role / Device Role / Timing Role: Fast-switching analog multiplexer selecting subsets of transducer elements for time-delayed excitation. Use Value: 5µs turn-on/off time and DC-to-50MHz analog bandwidth support sub-microsecond channel reconfiguration for real-time beam shaping. |
Use Scenario: High-voltage signal routing in semiconductor test handlers requiring reliable, low-leakage switching of ±100V stimulus signals. IC Role / Device Role / Timing Role: Eight independent HV switches isolating DUT connections during test sequence changes. Use Value: <2µA switch-off leakage and 18pF off-capacitance maintain signal fidelity and minimize settling time in precision parametric 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 |
|---|---|---|---|
| HV2303PJ-G | Pin-compatible PLCC-28 variant; no integrated bleed resistors; requires external discharge network | Limited to legacy PLCC layouts; lacks RGND terminal and bleed functionality | Select only if redesigning for CSBGA is not feasible and external bleed resistors are acceptable |
| MAX4802ACCM+ | Same functionality and bleed resistors, but in 48-pin LQFP package (7mm × 7mm) | Higher pin count enables easier routing in space-constrained industrial PCBs; larger thermal footprint | Prefer for new designs needing better thermal dissipation (θJA = 44°C/W) and standard surface-mount assembly |
Compared with HV2303PJ-G and MAX4802ACCM+, the MAX4802ACXZ+ offers the smallest footprint (26-bump CSBGA), integrated bleed resistors eliminating external components, and identical electrical performance - making it optimal for miniaturized ultrasound probe modules and high-density printer controller boards.
Availability
MAX4802ACXZ+ is available at Aetrix Electronics and suitable for ultrasound imaging systems, industrial printer controllers, medical beamforming modules, and automated test equipment requiring stable component supply and long-term production continuity.
Supply support for MAX4802ACXZ+ 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX4800A/MAX4802A product line was designed specifically for high-voltage, low-distortion analog switching in ultrasound and precision printing - emphasizing charge injection control, wide supply flexibility, and robust serial configurability.
FAQ
What is the maximum allowable voltage difference between VPP and VNN for the MAX4802ACXZ+?
The MAX4802ACXZ+ specifies a maximum VPP − VNN differential of 200V. This is explicitly stated in the Absolute Maximum Ratings table and confirmed in the Detailed Description section. Operation beyond this limit risks permanent damage. Valid configurations include +100V/−100V, +40V/−160V, and +160V/−40V - all satisfying the 200V constraint. The MAX4802ACXZ+ does not require symmetrical supplies.
Does the MAX4802ACXZ+ require external bleed resistors for piezoelectric load discharge?
No. The MAX4802ACXZ+ integrates 35kΩ bleed resistors on every COM and NO terminal, connected internally to the RGND pin. This feature is exclusive to the MAX4802A family (including MAX4802ACXZ+) and eliminates the need for external discharge networks - a key distinction from the MAX4800A and Supertex HV2303PJ-G alternatives.
What is the guaranteed power-up state of the MAX4802ACXZ+ switches?
The MAX4802ACXZ+ incorporates a power-on reset circuit that guarantees all eight switches are open (non-conductive) at power-up. This behavior is documented in both the General Description and Detailed Description sections and ensures safe default operation before any serial commands are issued.
Can the MAX4802ACXZ+ be daisy-chained with other devices using its DOUT pin?
Yes. The MAX4802ACXZ+ provides a DOUT pin that echoes the DIN input after an 8-clock-cycle delay, enabling direct daisy-chaining of multiple units. As described in Figure 3 and Applications Information, DOUT of one device connects to DIN of the next, while CLK, LE, and CLR are shared across the chain for synchronized updates.
What is the analog signal bandwidth supported by the MAX4802ACXZ+ switches?
The MAX4802ACXZ+ supports analog signals from DC to 50MHz, as specified in the Features list and Electrical Characteristics table. This bandwidth is validated by −77dB off-isolation at 5MHz and −33dB at 1MHz, confirming suitability for ultrasound transmit pulse shaping and high-speed test signal routing.
MAX4802ACXZ+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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 ~ 6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 5µs, 5µs
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 18pF
- Current - Leakage (IS(off)) (Max):
- 2µA
- Crosstalk:
- -80dB @ 5MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 72-CSBGA (6x5.35)
MAX4802ACXZ+ FAQ
1.How can I place an order for MAX4802ACXZ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4802ACXZ+ 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 MAX4802ACXZ+ reliable?
The price and inventory of MAX4802ACXZ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4802ACXZ+ is usually 5 days.
3.What payment methods are accepted for MAX4802ACXZ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4802ACXZ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4802ACXZ+?
MAX4802ACXZ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4802ACXZ+ 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 MAX4802ACXZ+?
For technical support, including MAX4802ACXZ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4802ACXZ+ requirements.
6.How does Aetrix verify that MAX4802ACXZ+ is sourced from the original manufacturer or authorized distributors?
All MAX4802ACXZ+ 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 MAX4802ACXZ+ meets industry standards.
7.What is the process for return or replacement of MAX4802ACXZ+?
All MAX4802ACXZ+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4802ACXZ+, 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 MAX4802ACXZ+ part is unused and in its original packaging.
Return procedure for MAX4802ACXZ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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