Analog Devices Inc./Maxim Integrated MAX1064BCEG+T

Overview

MAX1064BCEG+T from Maxim Integrated is a 10-bit successive-approximation ADC with 4-channel single-ended or 2-channel pseudo-differential analog input, +2.5V internal reference, byte-wide parallel (8+2) interface, and 400ksps sampling rate. It operates from a single +5V analog supply with independent +2.7V to +5.5V digital logic supply (VLOGIC), enabling direct interfacing with mixed-voltage microcontrollers in portable data-acquisition systems.

For engineers reviewing the MAX1064BCEG+T datasheet, MAX1064BCEG+T pinout, MAX1064BCEG+T application, or MAX1064BCEG+T equivalent, key selection criteria include its software-configurable unipolar/bipolar input mode, 2.5mA active current at 400ksps, 2µs wake-up from shutdown, internal track-and-hold with 6MHz full-power bandwidth, and QSOP-24 package compatibility with space-constrained industrial sensor nodes.

Technical Context

The MAX1064BCEG+T implements a charge-redistribution SAR architecture with integrated track-and-hold, supporting both internal and external clock modes via control bits D6/D7. Its analog input multiplexer is software-configurable for single-ended (CH0–CH3) or pseudo-differential (CH0/CH1, CH2/CH3) operation, with COM referenced to GND for zero-code alignment.

Conversion timing is determined by 13 clock cycles per sample; in internal acquisition mode, acquisition is timed internally (~1µs with internal clock), while external acquisition allows user-controlled sampling aperture via dual WR pulses. The device features automatic power-down between conversions, reducing supply current to under 10µA at reduced sampling rates.

Key Specifications

Pinout & Package

MAX1064BCEG+T is housed in a 24-pin QSOP (Quad Small Outline Package) with 0.154" body width and 0.025" lead pitch, optimized for high-density PCB layouts in industrial and medical instrumentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1064ACEG+T, the MAX1064BCEG+T guarantees tighter ±0.5 LSB INL across its full 0°C to +70°C range, while ADS7822U trades resolution, interface simplicity, and integrated reference for lower cost and smaller footprint - making MAX1064BCEG+T optimal for precision, low-component-count, parallel-interface designs.

Availability

MAX1064BCEG+T is available at Aetrix Electronics and suitable for industrial process monitoring, portable patient monitoring, energy metering subsystems, and touchscreen controller interfaces requiring stable component supply and long-term production continuity.

Supply support for MAX1064BCEG+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.

The MAX1064BCEG+T belongs to Maxim's precision data-acquisition ADC family, designed specifically for low-power, space-constrained systems requiring integrated reference, flexible input configuration, and µP-friendly parallel interface.

FAQ

What is the operating temperature range of the MAX1064BCEG+T?

The MAX1064BCEG+T is rated for operation from 0°C to +70°C, with guaranteed ±0.5 LSB integral nonlinearity and full 400ksps sampling performance across this commercial temperature range. Its internal +2.5V reference exhibits ±2.0ppm/°C temperature coefficient, ensuring stable full-scale calibration without external compensation circuits.

How does the MAX1064BCEG+T handle analog input protection?

The MAX1064BCEG+T includes internal clamping diodes that protect analog inputs from −0.3V to (VDD + 0.3V), allowing safe operation with input swings from (GND − 300mV) to (VDD + 300mV). For accurate full-scale conversion, inputs must stay within (GND − 50mV) to (VDD + 50mV); exceeding these limits risks measurement error, though damage is prevented up to the absolute maximum ratings.

Can the MAX1064BCEG+T interface directly with a 3.3V microprocessor?

Yes - the MAX1064BCEG+T supports VLOGIC from +2.7V to +5.5V, enabling direct connection to 3.3V µPs without level shifters. When VLOGIC = 3.3V, output VOH is ≥2.8V and VOL is ≤0.4V (with 1.6mA sink), meeting standard 3.3V CMOS logic thresholds while maintaining full 10-bit data integrity on the parallel bus.

What is the purpose of the HBEN pin on the MAX1064BCEG+T?

The HBEN (High Byte Enable) pin on the MAX1064BCEG+T controls multiplexing of the 10-bit conversion result onto the 8-bit data bus: when HBEN = 1, D0/D8 and D1/D9 carry the two most significant bits (MSBs); when HBEN = 0, D0–D7 carry the eight least significant bits (LSBs). This allows full 10-bit reads using standard 8-bit µP data buses.

Does the MAX1064BCEG+T require an external clock to operate?

No - the MAX1064BCEG+T supports both internal and external clock modes. In internal clock mode (D7=1, D6=0), it generates its own ~7.6MHz clock, eliminating external timing components. The CLK pin must be tied to VDD or GND in this mode to prevent floating. External clock mode (D7=1, D6=1) accepts 100kHz–7.6MHz TTL/CMOS clocks for precise aperture control.