Analog Devices Inc./Maxim Integrated MAX165BEPN+

Overview

MAX165BEPN+ from Maxim Integrated is a 12-bit analog-to-digital converter (ADC) with parallel interface, ±0.5 LSB integral nonlinearity, 100 kSPS sampling rate, and internal 2.5 V reference. It operates from a single +5 V supply and is used in data acquisition systems requiring high DC accuracy.

For engineers reviewing the MAX165BEPN+ datasheet, MAX165BEPN+ pinout, MAX165BEPN+ application, or MAX165BEPN+ equivalent, key selection factors include its 12-bit resolution, ±0.5 LSB INL, single-supply operation, internal reference, and parallel 8-bit multiplexed bus interface.

Technical Context

The MAX165BEPN+ employs a successive-approximation register (SAR) architecture with internal track-and-hold, enabling accurate DC and low-frequency signal conversion. It features a built-in 2.5 V reference with ±0.5% initial accuracy and 20 ppm/°C temperature drift.

Conversion is initiated by WR pulse; BUSY goes high during conversion and returns low upon completion. Data is output on D0–D7 (multiplexed with address lines A0–A3) in byte-wide format, requiring two read cycles for full 12-bit result.

Key Specifications

Pinout & Package

MAX165BEPN+ is housed in a 28-pin plastic DIP (dual in-line package) with 0.6-inch body width and through-hole mounting.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ADC applications.

Compared with ADS7822U and MAX195BCNG+, the MAX165BEPN+ offers the best balance of integration (internal reference), ease of use (parallel interface), and proven DC accuracy in legacy industrial designs-without requiring layout changes or firmware rework.

Availability

MAX165BEPN+ is available at Aetrix Electronics and suitable for industrial process monitoring, test equipment, and medical instrumentation requiring stable component supply and long-term obsolescence management.

Supply support for MAX165BEPN+ 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 power management ICs for industrial, automotive, and communications applications.

The MAX165BEPN+ belongs to Maxim's legacy high-accuracy data converter family, engineered for DC-critical applications where stability, repeatability, and single-supply simplicity are prioritized over speed or serial interface flexibility.

FAQ

What is the maximum sampling rate of the MAX165BEPN+?

The MAX165BEPN+ supports a maximum sampling rate of 100 kSPS. This rate is guaranteed across the full operating temperature range (−40°C to +85°C) and with the internal reference enabled. At this rate, the MAX165BEPN+ maintains its specified ±0.5 LSB integral nonlinearity and 12-bit effective resolution for DC and low-frequency inputs.

Does the MAX165BEPN+ require an external reference voltage?

No, the MAX165BEPN+ includes an internal 2.5 V reference with ±0.5% initial accuracy and 20 ppm/°C drift. This eliminates the need for external reference components unless higher absolute accuracy or tighter temperature stability is required. The internal reference is factory-trimmed and fully integrated into the MAX165BEPN+ die.

What package type is used for the MAX165BEPN+?

The MAX165BEPN+ is packaged in a 28-pin plastic DIP (dual in-line package) with 0.6-inch body width and through-hole leads. This package is RoHS-compliant and rated for operation from −40°C to +85°C. The MAX165BEPN+ DIP variant is commonly used in prototyping, legacy industrial controllers, and repair applications where socketing is preferred.

How is data read from the MAX165BEPN+?

Data is read from the MAX165BEPN+ via its byte-multiplexed 8-bit parallel interface. After conversion completes (BUSY goes low), two consecutive RD pulses retrieve the lower and upper bytes of the 12-bit result from D0–D7, using AD0–AD3 to select byte order. The MAX165BEPN+ does not support burst or auto-increment read modes.

Is the MAX165BEPN+ pin-compatible with other Maxim ADCs like the MAX166 or MAX167?

No, the MAX165BEPN+ is not pin-compatible with the MAX166 or MAX167. While all three are 12-bit parallel-output ADCs in 28-pin DIP packages, their pin assignments differ significantly-especially for control signals (e.g., RD/WR polarity, BUSY behavior) and address/data multiplexing. Interchangeability requires schematic and layout revision; the MAX165BEPN+ must be treated as a distinct part in design implementation.