Analog Devices Inc./Maxim Integrated MAX4802CCM+

Overview

MAX4802CCM+ from Maxim Integrated is an 8-channel, high-voltage SPST analog switch IC designed for ultrasound imaging and printer systems. It features integrated 35kΩ bleed resistors on each switch terminal, supports VPP/VNN up to +100V/–100V (200V total), delivers ≤22Ω on-resistance, and operates with digital supply VDD from +2.7V to +13.2V. Its low-charge-injection (350pC) and –77dB off-isolation at 5MHz enable precise control of piezoelectric transducer signals.

For engineers reviewing the MAX4802CCM+ datasheet, MAX4802CCM+ pinout, MAX4802CCM+ application, or MAX4802CCM+ equivalent, this page provides verified technical context, real-world timing and isolation specs, package-specific pin mapping for the 48-pin TQFP, and validated drop-in alternatives for HV232FG replacement scenarios in medical imaging front-ends and industrial print head drivers.

Technical Context

The MAX4802CCM+ implements eight independent BCDMOS-based SPST switches controlled via an 8-bit serial shift register with latch enable (LE) and clear (CLR) inputs. Its power-on reset ensures all switches default open, and its digital interface tolerates +13.2V logic inputs regardless of VDD level.

Each switch supports analog signal ranges from VNN +10V to VPP –10V, with turn-on/off times ≤5µs and DC-to-10MHz signal bandwidth. The integrated 35kΩ bleed resistors connect each COM/NO terminal to RGND, enabling automatic discharge of capacitive loads like ultrasonic transducers without external components.

Key Specifications

Pinout & Package

MAX4802CCM+ is housed in a 48-pin TQFP (7mm × 7mm) package with exposed pad. Pin functions are electrically identical across MAX4800/MAX4801/MAX4802 families but include RGND (Pin 27) unique to MAX4802 variants for bleed resistor reference.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage analog switching applications.

Compared with HV232FG and MAX4800CCM+, the MAX4802CCM+ uniquely integrates 35kΩ bleed resistors tied to RGND-reducing component count and improving discharge consistency in ultrasound and print head systems where capacitive load management is critical.

Availability

MAX4802CCM+ is available at Aetrix Electronics and suitable for ultrasound imaging systems, industrial printer controllers, and medical diagnostic equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

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 industrial, medical, and communications markets.

The MAX4800/MAX4801/MAX4802 family was engineered specifically for high-voltage, low-distortion analog switching in ultrasound and printer applications-emphasizing charge injection control, wide supply flexibility, and integrated load discharge.

FAQ

What is the function of the RGND pin on the MAX4802CCM+?

The RGND pin on the MAX4802CCM+ serves as the dedicated ground reference for the integrated 35kΩ bleed resistors connected to each COM and NO terminal. It must be tied to the system ground plane to enable automatic discharge of capacitive loads such as piezoelectric transducers. Unlike standard GND (Pin 28), RGND isolates bleed current return paths to minimize noise coupling into sensitive analog sections-ensuring reliable operation in the MAX4802CCM+.

Does the MAX4802CCM+ require specific power-supply sequencing?

No, the MAX4802CCM+ does not require strict power-supply sequencing among VDD, VPP, and VNN. However, analog inputs (COM_/NO_) must remain unconnected or within VNN to VPP during power-up and power-down to prevent latch-up. All supplies-VDD, VPP, and VNN-must be bypassed with ≥0.1µF ceramic capacitors placed close to their respective pins. This design simplifies power management in the MAX4802CCM+ while maintaining robustness across varying rail configurations.

Can the MAX4802CCM+ be used in daisy-chained configurations?

Yes, the MAX4802CCM+ supports daisy-chaining via its DOUT pin, which outputs shifted data delayed by eight clock cycles. Multiple MAX4802CCM+ devices can be connected serially (DOUT → next DIN) while sharing common CLK, LE, and CLR lines. A single LE pulse updates all devices simultaneously, enabling synchronized switching across large transducer arrays-making daisy-chaining a key capability of the MAX4802CCM+ in scalable ultrasound systems.

What is the maximum analog signal frequency supported by the MAX4802CCM+?

The MAX4802CCM+ supports analog signals from DC up to 10MHz, as confirmed by its specified bandwidth and –77dB off-isolation at 5MHz. This performance is validated under RL = 50Ω and CL = 15pF conditions. The 10MHz upper limit ensures faithful reproduction of fast-rising ultrasound echo waveforms and high-frequency print head drive signals-defining the usable signal range of the MAX4802CCM+ in time-critical applications.

How does the MAX4802CCM+ handle power-on initialization?

The MAX4802CCM+ incorporates an internal power-on reset circuit that forces all eight switches to the open (off) state at power-up, regardless of input logic states. This ensures safe default behavior-preventing unintended high-voltage connections during system startup. The internal 8-bit shift register and latch are both initialized to zero, guaranteeing predictable initial conditions without external reset circuitry-a built-in safety feature of the MAX4802CCM+.