Analog Devices Inc./Maxim Integrated MAX196BENI

Overview

The MAX196BENI from Maxim Integrated is a multirange, 12-bit data-acquisition system (DAS) with six software-programmable analog input channels, single +5V supply operation, ±10V input range capability, and 100ksps throughput rate. It integrates a 5MHz track/hold, internal 4.096V reference or external reference support, and fault protection to ±16.5V - enabling direct interfacing of ±12V/±15V industrial sensors into low-voltage embedded control systems.

For engineers reviewing the MAX196BENI datasheet, MAX196BENI pinout, MAX196BENI application, or MAX196BENI equivalent, this device serves as a high-accuracy, fault-tolerant ADC for industrial data acquisition where input range flexibility, ±16.5V overvoltage resilience, and microprocessor-compatible 12-bit parallel interface are critical selection criteria.

Technical Context

The MAX196BENI employs successive approximation architecture with integrated track/hold circuitry and supports both internal (capacitor-timed) and external clock modes (100kHz–2.0MHz). Its analog front-end includes a fault-protected multiplexer and programmable input ranges (±10V, ±5V, 0V to +10V, 0V to +5V), achieving effective dynamic range up to 14 bits via range switching.

It uses a 12-bit parallel µP interface with TTL/CMOS-compatible control signals (CS, WR, RD, INT), three-state D0–D11 outputs, and two power-down modes (STBYPD and FULLPD). The internal reference buffer provides 4.096V ±1.5% adjustable output, while REFADJ allows external 2.5V reference scaling via fixed 1.6384 gain.

Key Specifications

Pinout & Package

MAX196BENI is housed in a 28-pin narrow plastic DIP package (0°C to +70°C operating range), compatible with through-hole prototyping and industrial PCB layouts requiring mechanical robustness and thermal margin.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multirange, 12-bit data-acquisition system applications.

Compared with ADS7816U and AD7892BN, the MAX196BENI uniquely combines software-configurable ±10V/±5V/0–10V ranges, ±16.5V fault tolerance, and integrated 4.096V reference in a single +5V supply device - reducing component count and enhancing reliability in multi-sensor industrial DAQ.

Availability

MAX196BENI is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, medical patient monitoring, and robotics joint feedback systems requiring stable component supply across extended production lifecycles.

Supply support for MAX196BENI 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 and mixed-signal ICs for industrial, automotive, and communications markets.

The MAX196BENI belongs to Maxim's precision data-acquisition product line, designed specifically for rugged, single-supply industrial measurement systems requiring wide input range flexibility, fault resilience, and µP-friendly parallel interfacing.

FAQ

What is the operating temperature range of the MAX196BENI?

The MAX196BENI is rated for 0°C to +70°C operation and packaged in a 28-pin narrow plastic DIP. This commercial-grade temperature range suits indoor industrial control panels, benchtop test equipment, and medical devices with controlled ambient conditions. It does not support extended or military temperature grades - for those, consider the MAX196BCWI (same specs, wide SO package) or MAX196EAI variants.

Does the MAX196BENI support external reference operation?

Yes, the MAX196BENI supports external reference operation via the REF pin (with REFADJ tied to VDD to disable the internal buffer) or via the REFADJ pin (where a 2.5V source is scaled by the internal 1.6384 gain to produce 4.096V at REF). External references must provide ≤10Ω output impedance and sustain 400µA DC load; a 4.7µF capacitor at REF is mandatory for stability.

How does the fault protection on the MAX196BENI work during power-down?

The MAX196BENI maintains ±16.5V input fault protection even when powered down (STBYPD or FULLPD modes active). This is achieved through passive resistive input networks that limit current into the internal circuitry regardless of VDD state. As a result, channel faults cannot corrupt conversions on other channels or damage the device - a key requirement for unattended industrial sensor nodes.

Can the MAX196BENI interface directly with a 16-bit microprocessor data bus?

Yes, the MAX196BENI features a 12-bit three-state parallel interface (D0–D11) with TTL/CMOS-compatible timing, fully compatible with 16-bit µPs such as the Intel 80C186 or Motorola 68HC16. The unused upper 4 bits (D12–D15) are simply ignored during read cycles; no bus transceivers or address decoding logic is required for basic operation.

What is the difference between STBYPD and FULLPD power-down modes in the MAX196BENI?

In STBYPD mode, the reference buffer remains active, allowing immediate conversion start upon wake-up with no reference settling delay. In FULLPD mode, the entire analog section (including reference buffer) powers down, reducing supply current to 10µA but requiring ~8ms for reference stabilization before valid conversions. Use STBYPD for low-latency wake-up; FULLPD for ultra-low-power sleep in battery-operated DAQ.