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Analog Devices Inc./Maxim Integrated MAX4802CCM
- Part No.:
- MAX4802CCM
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 48-LQFP
- Datasheet:
-
MAX4802CCM.pdf
- Description:
- IC SW SPSTX8 25OHM 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,950
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Product details
Overview
MAX4802CCM from Maxim Integrated is an 8-channel, high-voltage SPST analog switch IC designed for ultrasonic imaging and printer systems. It features integrated 35kΩ bleed resistors on each switch terminal, supports VPP/VNN supplies up to +100V/–100V (200V total), delivers ≤22Ω on-resistance, achieves –77dB off-isolation at 5MHz, and operates with digital inputs tolerant to +13.2V independent of VDD.
For engineers reviewing the MAX4802CCM datasheet, MAX4802CCM pinout, MAX4802CCM application, or MAX4802CCM equivalent, key selection criteria include high-voltage analog switching capability, low-charge-injection performance (350pC), integrated bleed resistor functionality, 8-bit serial interface timing compliance, and drop-in replacement suitability for Supertex HV232FG in 48-pin TQFP layouts.
Technical Context
The MAX4802CCM implements eight independent SPST switches fabricated in BCDMOS process, each supporting analog signal ranges from VNN + 10V to VPP – 10V. Its 8-bit shift register accepts serial data via DIN/CLK, latched by LE and cleared by CLR - all logic inputs tolerate +13.2V regardless of VDD level (2.7V–13.2V).
Unlike MAX4800/MAX4801, the MAX4802CCM integrates 35kΩ bleed resistors between each COM/NO terminal and RGND to discharge piezoelectric transducer capacitance. Power-on reset ensures all switches default open, and supply sequencing requires no special ordering between VDD, VPP, and VNN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VPP/VNN Range | +40V/–160V to +185V/–15V (200V max differential); enables flexible high-voltage biasing for ultrasound transducers. |
| On-Resistance | 22Ω typical (VPP=+100V, VNN=–100V, ICOM=5mA); ensures minimal signal attenuation in precision analog paths. |
| Off-Isolation | –77dB at 5MHz (RL=50Ω); suppresses crosstalk between active and inactive channels in multi-element arrays. |
| Charge Injection | 350pC (VPP=+160V, VNN=–40V); minimizes voltage glitch on capacitive loads like piezo elements during switching. |
| Bleed Resistors | 35kΩ per terminal (COM/NO to RGND); actively discharges stored charge to prevent transducer ringing and settling delay. |
| Digital Input Tolerance | +13.2V absolute max on DIN/CLK/LE/CLR; allows direct interfacing with 12V microcontrollers without level-shifting. |
| Switching Speed | 5µs turn-on/turn-off time (RL=10kΩ); supports pulsed excitation waveforms up to 50kHz output switching frequency. |
Pinout & Package
MAX4802CCM is housed in a 48-pin TQFP (7mm × 7mm) package with exposed pad. Pin functions are defined per Maxim's official pinout documentation for MAX4802 TQFP variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM7 | Analog common terminals | Eight independent input nodes for high-voltage analog signals; each paired with corresponding NOx terminal. |
| NO0–NO7 | Analog normally-open terminals | Eight output nodes; closed only when respective bit in latch = 1; connected to RGND via 35kΩ bleed resistor. |
| VPP / VNN | High-voltage supply rails | Support asymmetric operation (e.g., +40V/–160V); require ≥0.1µF ceramic bypass to GND near pins. |
| RGND | Bleed resistor reference | Dedicated ground return for internal 35kΩ bleed resistors; must be connected to system ground for proper discharge function. |
| DIN / CLK / LE / CLR | Serial control interface | 8-bit shift register control: DIN (MSB-first), CLK (rising-edge), LE (active-low latch load), CLR (active-high reset). |
| DOUT | Serial data output | Shift-register output delayed by 8 clocks; enables daisy-chaining multiple MAX4802CCM devices without external logic. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bleed resistors | 35kΩ per COM/NO terminal tied to RGND - eliminates need for external discharge networks in ultrasound probe designs. |
| High-voltage supply flexibility | VPP/VNN combinations up to 200V differential (e.g., +100V/–100V, +185V/–15V, +40V/–160V) - accommodates diverse transducer bias requirements. |
| Low-charge-injection switching | 350pC typical - reduces transient voltage spikes on piezoelectric elements, improving echo signal fidelity and reducing post-pulse settling time. |
| +13.2V-tolerant digital inputs | DIN/CLK/LE/CLR accept up to +13.2V regardless of VDD (2.7V–13.2V) - simplifies interface with industrial PLCs or legacy 12V controllers. |
| Power-on reset | Guarantees all 8 switches start open at power-up - prevents unintended high-voltage connection during system initialization. |
Applications
| Ultrasound Transducer Multiplexing | Industrial Printer Head Control |
|---|---|
Use Scenario: Selecting individual elements in a 128-element phased-array ultrasound probe for beam steering and focusing. IC Role / Device Role / Timing Role: High-voltage SPST switch enabling precise time-of-flight gating of transmit/receive paths. Use Value: Integrated 35kΩ bleed resistors ensure rapid discharge of element capacitance between pulses, minimizing dead time and improving frame rate. |
Use Scenario: Driving high-voltage piezoelectric actuators in wide-format inkjet printers for precise droplet ejection timing. IC Role / Device Role / Timing Role: Serial-controlled analog switch delivering ±100V pulses to print head elements with sub-5µs edge control. Use Value: 22Ω on-resistance and –77dB off-isolation prevent cross-talk between adjacent nozzles, ensuring consistent dot placement accuracy. |
| Capacitive Load Discharge Circuit | High-Voltage Test Equipment Switching |
Use Scenario: Safely discharging charged piezoceramic components after functional testing in medical device manufacturing. IC Role / Device Role / Timing Role: Bleed resistor-enabled switch providing controlled 35kΩ discharge path from COM/NO to RGND. Use Value: Eliminates need for external bleeder circuits or manual discharge tools, reducing test fixture complexity and operator risk. |
Use Scenario: Routing high-voltage calibration signals (±100V) between DUT ports in automated test equipment for power electronics modules. IC Role / Device Role / Timing Role: Precision analog switch with <100mV DC offset and 5MHz bandwidth supporting accurate signal routing. Use Value: Low 350pC charge injection prevents voltage step errors during switching, preserving measurement integrity across 100+ test cycles. |
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 |
|---|---|---|---|
| HV232FG | Pin-compatible predecessor; no integrated bleed resistors; requires external 35kΩ resistors per channel. | Lacks built-in discharge capability - increases PCB area, BOM count, and layout complexity for piezo-based systems. | Select MAX4802CCM when bleed resistor integration reduces design cycle time and improves reliability over HV232FG. |
| MAX4802CQI | Same die, identical specs, but in 28-pin PLCC package - different pinout, smaller channel count (only 8 switches retained, no RGND pin). | Not suitable for space-constrained TQFP layouts; lacks RGND terminal, so bleed resistors cannot be used as intended. | Choose MAX4802CCM over MAX4802CQI when 48-pin TQFP mechanical fit and full bleed resistor functionality are required. |
Compared with HV232FG and MAX4802CQI, the MAX4802CCM uniquely combines drop-in TQFP compatibility, integrated 35kΩ bleed resistors with dedicated RGND, and guaranteed –77dB off-isolation - making it the optimal choice for new ultrasound and high-reliability printer designs requiring minimal external components.
Availability
MAX4802CCM is available at Aetrix Electronics and suitable for ultrasound imaging systems, industrial printer head drivers, high-voltage test equipment, and capacitive load discharge circuits requiring stable component supply and long-term manufacturability.
Supply support for MAX4802CCM 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 demanding industrial and medical applications.
The MAX4800/MAX4801/MAX4802 product line was engineered specifically for high-voltage, low-charge-injection switching in ultrasound transducer multiplexing and precision printer actuation - prioritizing signal integrity, reliability, and integration of discharge functionality.
FAQ
What is the purpose of the RGND pin on the MAX4802CCM?
The RGND pin on the MAX4802CCM serves as the dedicated return path for the integrated 35kΩ bleed resistors connected to each COM and NO terminal. It must be connected to system ground to enable active discharge of capacitive loads such as piezoelectric transducers. Unlike standard GND, RGND isolates bleed current from digital and high-voltage supply return paths, preventing noise coupling into sensitive analog sections. This functionality is exclusive to the MAX4802CCM and not present in MAX4800CCM or MAX4801CQI.
Does the MAX4802CCM support asymmetric high-voltage supplies like +40V/–160V?
Yes, the MAX4802CCM fully supports asymmetric high-voltage supplies including +40V/–160V, +100V/–100V, and +185V/–15V - all within its 200V maximum VPP–VNN rating. The device specifies analog signal range from VNN + 10V to VPP – 10V under these conditions, and electrical characteristics such as on-resistance and off-isolation are validated across this full operating envelope. This flexibility allows the MAX4802CCM to drive diverse transducer types without redesigning the bias network.
How does the MAX4802CCM differ from the MAX4800CCM in terms of bleed resistor functionality?
The MAX4802CCM integrates 35kΩ bleed resistors between each COM/NO terminal and RGND, while the MAX4800CCM has no bleed resistors. This makes the MAX4802CCM self-contained for capacitive load discharge - critical in ultrasound where piezo element ringing degrades image resolution. The MAX4800CCM requires external resistors for equivalent behavior, increasing component count and layout complexity. Both share identical serial interface, timing, and switching specs, but only MAX4802CCM provides this integrated discharge feature.
Can the MAX4802CCM be used in daisy-chain configurations?
Yes, the MAX4802CCM supports daisy-chaining via its DOUT pin, which outputs the shifted-in data stream delayed by eight clock cycles. Multiple MAX4802CCM devices can be connected DIN→DOUT→DIN with shared CLK, LE, and CLR lines. When LE is pulsed low, all devices simultaneously update their latches using the latest 8-bit word from the chain. This enables synchronized control of up to N×8 switches with only four control lines - a capability confirmed in Maxim's Application Note and functional diagrams for the MAX4802CCM.
What is the maximum analog signal frequency supported by the MAX4802CCM?
The MAX4802CCM supports analog signal frequencies from DC to 10MHz, as explicitly stated in its Features section and verified by –77dB off-isolation at 5MHz and –60dB crosstalk at the same frequency. Its 22Ω on-resistance and 11pF typical off-capacitance yield a calculated –3dB bandwidth exceeding 15MHz for a 50Ω load, confirming suitability for broadband ultrasound pulse transmission and high-speed printer waveform generation. Performance remains stable across the full 0°C to +70°C commercial temperature range.
MAX4802CCM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - Open
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 8
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.25Ohm
- 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)):
- 11pF
- 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-LQFP (7x7)
MAX4802CCM FAQ
1.How can I place an order for MAX4802CCM through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4802CCM 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 MAX4802CCM reliable?
The price and inventory of MAX4802CCM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4802CCM is usually 5 days.
3.What payment methods are accepted for MAX4802CCM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4802CCM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4802CCM?
MAX4802CCM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4802CCM 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 MAX4802CCM?
For technical support, including MAX4802CCM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4802CCM requirements.
6.How does Aetrix verify that MAX4802CCM is sourced from the original manufacturer or authorized distributors?
All MAX4802CCM 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 MAX4802CCM meets industry standards.
7.What is the process for return or replacement of MAX4802CCM?
All MAX4802CCM units undergo pre-shipment inspection (PSI). If there is an issue with MAX4802CCM, 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 MAX4802CCM part is unused and in its original packaging.
Return procedure for MAX4802CCM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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