Analog Devices Inc./Maxim Integrated MAX165BCWN+T

Overview

MAX165BCWN+T 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 ±5 V analog input range. It operates from dual ±5 V supplies and is used in precision data acquisition systems for industrial process control.

For engineers reviewing the MAX165BCWN+T datasheet, MAX165BCWN+T pinout, MAX165BCWN+T application, or MAX165BCWN+T equivalent, key selection criteria include its 12-bit resolution, parallel 8-bit byte-wide data bus, single-supply or dual-supply operation flexibility, and built-in reference buffer supporting external or internal 2.5 V reference.

Technical Context

The MAX165BCWN+T implements a successive-approximation register (SAR) architecture with internal track-and-hold, enabling accurate DC and low-frequency AC signal digitization. It features a CMOS-compatible parallel interface with separate RD and WR strobes and supports both independent and daisy-chained read operations.

Its internal reference buffer allows direct connection to a 2.5 V external reference or use of the on-chip reference; full-scale range is programmable as ±2.5 V or ±5 V via REFSEL pin. Conversion time is fixed at 10 µs, independent of clock frequency.

Key Specifications

Pinout & Package

MAX165BCWN+T is housed in a 28-pin SOIC wide-body package (SO28W) with 0.3-inch body width and standard 0.050-inch lead pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit parallel ADC applications.

Compared with AD7892BN-10 and ADS7822U, the MAX165BCWN+T uniquely combines bipolar ±5 V input, integrated reference buffer, and parallel interface in a single SOIC package-reducing BOM count and layout complexity for industrial DAQ systems requiring guaranteed linearity and ease of MPU integration.

Availability

MAX165BCWN+T is available at Aetrix Electronics and suitable for industrial data acquisition, test equipment, and medical instrumentation requiring stable component supply and long-term manufacturability.

Supply support for MAX165BCWN+T 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 MAX165BCWN+T belongs to Maxim's precision data converter family, engineered for high-accuracy, low-drift digitization in harsh environments where reliability and specification compliance are critical.

FAQ

What is the maximum sampling rate of the MAX165BCWN+T?

The MAX165BCWN+T achieves a maximum sampling rate of 100 kSPS. This rate is sustained across its full operating temperature range and supply voltage tolerance. Each conversion completes in a fixed 10 µs, enabling deterministic timing for synchronized data capture in real-time control loops. The MAX165BCWN+T does not require external clock configuration to achieve this performance.

Does the MAX165BCWN+T support bipolar analog inputs?

Yes, the MAX165BCWN+T supports true bipolar analog inputs with a selectable full-scale range of ±5 V (dual-supply mode) or ±2.5 V (with REFSEL pin assertion). Its input structure accepts differential or single-ended signals referenced to AGND, making it suitable for industrial sensors with negative excursions. The MAX165BCWN+T maintains specified INL and offset error across the entire bipolar range.

Can the MAX165BCWN+T operate from a single +5 V supply?

No, the MAX165BCWN+T requires dual ±5 V analog supplies (V_AA = +5 V, V_EE = –5 V) and a separate +5 V digital supply (V_DD). It lacks single-supply operational capability. Attempting single-supply biasing violates absolute maximum ratings and invalidates all AC/DC specifications. The MAX165BCWN+T is designed exclusively for dual-rail analog systems.

What reference voltage options does the MAX165BCWN+T provide?

The MAX165BCWN+T offers two reference configurations: an internal 2.5 V reference (buffered and available at REFIN/REFOUT) or an external 2.5 V reference applied to the same pin. The internal reference is factory-trimmed to ±0.5% initial accuracy and exhibits low temperature drift. No external reference IC is required unless higher initial accuracy or custom reference voltage is needed. The MAX165BCWN+T does not support reference voltages other than 2.5 V.

Is the MAX165BCWN+T pin-compatible with other Maxim ADCs like the MAX167 series?

No, the MAX165BCWN+T is not pin-compatible with the MAX167 series. The MAX167 uses a different pinout, includes additional features like internal clock generation, and has distinct power supply and reference pin assignments. Interchanging them requires PCB redesign. The MAX165BCWN+T pinout is unique to its 28-pin SOIC package and functional set; compatibility must be verified per datasheet, not assumed by series naming.