Analog Devices Inc./Maxim Integrated MAX1093BCEG

Overview

MAX1093BCEG from Maxim Integrated is a 10-bit successive-approximation ADC with 4-channel single-ended / 2-channel pseudo-differential analog input multiplexing, +2.5V internal reference, and byte-wide (8+2) parallel interface. It operates from a single +3V analog supply and supports digital logic levels from +1.8V to +3.6V via VLOGIC. Designed for low-power data acquisition, it delivers 250ksps sampling at 1.9mA and shuts down to 2µA.

For engineers reviewing the MAX1093BCEG datasheet, MAX1093BCEG pinout, MAX1093BCEG application, or MAX1093BCEG equivalent, this page provides verified technical context, real-world use cases, validated alternatives, and supply-chain support for industrial sensing, patient monitoring, and energy management systems where space-constrained, battery-aware precision conversion is required.

Technical Context

The MAX1093BCEG implements a charge-redistribution SAR architecture with integrated track/hold, supporting both internal and external clock modes (up to 4.8MHz) and internal/external acquisition control. Its analog front-end enables software-configurable unipolar/bipolar and single-ended/pseudo-differential operation with COM-referenced zero-code alignment.

Conversion timing is fixed at 13 clock cycles; aperture jitter is ≤50ps in external acquisition mode and up to 200ps in internal acquisition + internal clock mode. The device tri-states INT on CS high and uses HBEN to multiplex 10-bit output across an 8-bit bus with two MSBs selectable via D1/D9 and D0/D8.

Key Specifications

Pinout & Package

MAX1093BCEG is housed in a 24-pin QSOP package (5.0mm × 7.5mm, 0.635mm pitch), optimized for high-density PCB layouts in handheld and embedded instrumentation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit parallel ADC applications.

Compared with MAX1093BCEG, ADS7822U trades resolution and interface flexibility for lower cost and smaller footprint, while MAX11602EEE+ prioritizes precision and ease of integration over speed and parallel throughput - making MAX1093BCEG optimal for space-constrained, high-speed, mixed-voltage embedded systems requiring deterministic timing.

Availability

MAX1093BCEG is available at Aetrix Electronics and suitable for industrial sensor nodes, patient vital signs monitors, smart energy meters, and touchscreen controller interfaces requiring stable component supply and long-term production continuity.

Supply support for MAX1093BCEG 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 and mixed-signal ICs for demanding industrial, medical, and communications applications.

The MAX1093BCEG belongs to Maxim's low-power, high-speed parallel ADC product line, engineered specifically for battery-operated and space-constrained data acquisition systems needing integrated reference, flexible input configuration, and µP-friendly timing.

FAQ

What is the operating temperature range for MAX1093BCEG?

The MAX1093BCEG is specified for 0°C to +70°C ambient operation (Commercial grade). This range covers most indoor industrial, medical, and consumer applications. For extended environments such as outdoor energy meters or automotive cabins, the MAX1093EEG (-40°C to +85°C) variant is recommended. All electrical specifications in the MAX1093BCEG datasheet are guaranteed within its rated temperature range.

Does MAX1093BCEG require an external clock source?

No - MAX1093BCEG supports both internal and external clock modes. In internal clock mode (D7=1, D6=0), it generates its own 3MHz conversion clock, eliminating external timing components. External clock mode (D7=1, D6=1) accepts 100kHz–4.8MHz TTL/CMOS signals for precise synchronization with system timing. The CLK pin must be tied high or low in internal clock mode to prevent floating.

How does the HBEN pin function on MAX1093BCEG?

The HBEN (High Byte Enable) pin controls multiplexing of the 10-bit conversion result onto the 8-bit data bus. When HBEN = 1, D1/D9 and D0/D8 output the two MSBs (bits 9–8); when HBEN = 0, those pins output the two LSBs (bits 1–0), and D7–D0 carry bits 7–0. This allows full 10-bit reads using standard 8-bit microcontroller ports without additional latches or data lines.

Can MAX1093BCEG operate with a 1.8V digital supply?

Yes - MAX1093BCEG features a dedicated VLOGIC pin that accepts +1.8V to +3.6V, enabling direct interfacing with modern low-voltage microcontrollers and FPGAs. The analog core remains powered by VDD (+2.7V to +3.6V), ensuring full 10-bit performance regardless of VLOGIC level. Digital outputs (D0–D7, INT) are referenced to VLOGIC, not VDD.

What is the maximum analog input voltage range for MAX1093BCEG in unipolar mode?

In unipolar mode with internal +2.5V reference, the MAX1093BCEG accepts analog inputs from 0V to +2.5V (relative to COM). The absolute voltage on any analog input (CH0–CH3, COM) must stay within GND to VDD (+2.7V to +3.6V) to avoid damage. For full-scale accuracy, inputs should remain within GND −50mV to VDD +50mV - exceeding this risks nonlinearity or latch-up.