Analog Devices Inc./Maxim Integrated MAX1060BCEI

Overview

The MAX1060BCEI from Maxim Integrated is a 10-bit successive-approximation analog-to-digital converter (SAR ADC) with integrated +2.5V reference, byte-wide parallel (8+2) interface, and software-configurable 8-channel single-ended or 4-channel pseudo-differential input multiplexer. It operates from a single +5V analog supply and supports digital logic levels from +2.7V to +5.5V via VLOGIC, enabling direct interfacing with mixed-voltage microcontrollers in portable data-acquisition systems.

For engineers reviewing the MAX1060BCEI datasheet, MAX1060BCEI pinout, MAX1060BCEI application, or MAX1060BCEI equivalent, key selection considerations include its 400ksps sampling rate, ±0.5 LSB INL at 0°C to +70°C, 2.5mA active current at full speed, 2µs wake-up from shutdown, and 28-pin QSOP package with HBEN-controlled 10-bit data bus multiplexing.

Technical Context

The MAX1060BCEI implements a charge-redistribution SAR architecture with an internal track-and-hold stage offering 6MHz full-power bandwidth and 350kHz full-linear bandwidth. Its control logic accepts an 8-bit configuration byte defining acquisition mode (internal/external), clock source (internal/external), unipolar/bipolar range, and channel selection - all processed without external timing components.

Conversion timing is deterministic: 13 clock cycles per conversion, with tCONV = 3.2µs (internal clock) or scalable down to 2.5µs at 7.6MHz external clock. The device supports two software-selectable power-down modes - standby (≤10µA) and full shutdown (≤2µA) - triggered by PD0/PD1 bits, with automatic wake-up on CS/WR activity.

Key Specifications

Pinout & Package

MAX1060BCEI is housed in a 28-pin QSOP (Quad Small Outline Package) with 0.15mm lead pitch and 5.3mm × 10.2mm body size, optimized for high-density PCB layouts in space-constrained instrumentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and MAX11602EEE+, the MAX1060BCEI delivers higher throughput (400ksps vs. 200ksps/100ksps), parallel bus efficiency for µP-centric architectures, and integrated reference stability - making it optimal for cost-sensitive, medium-speed data loggers requiring minimal external components.

Availability

MAX1060BCEI is available at Aetrix Electronics and suitable for industrial process monitoring, patient vital sign acquisition, energy metering subsystems, and touchscreen controller interfaces requiring stable component supply across extended production lifecycles.

Supply support for MAX1060BCEI 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 demanding industrial, medical, and communications applications.

The MAX1060BCEI belongs to Maxim's low-power SAR ADC product line, engineered for battery-operated and space-constrained data-acquisition systems where integration, speed, and accuracy must coexist without external support components.

FAQ

What is the operating temperature range for the MAX1060BCEI?

The MAX1060BCEI is specified for 0°C to +70°C ambient operation, as indicated by the "B" grade suffix in its part number. This commercial-grade temperature range aligns with its target use in non-military, non-automotive instrumentation and portable electronics where thermal management is controlled. The device maintains ±0.5 LSB INL and full 10-bit performance across this range, with gain error drift limited to ±2 ppm/°C and reference drift to ±20 ppm/°C.

Does the MAX1060BCEI require an external clock to operate?

No, the MAX1060BCEI does not require an external clock. It features an internal 6MHz clock generator selectable via control byte bits D7/D6. When configured for internal clock mode, the CLK pin must be tied to VDD or GND to prevent floating. Internal clock operation yields a fixed 3.2µs conversion time and eliminates external timing component dependencies - ideal for simplified system design. External clock mode (100kHz–7.6MHz) is optional for jitter-critical or synchronized multi-ADC applications.

How does the HBEN pin function on the MAX1060BCEI?

The HBEN (High-Byte Enable) pin on the MAX1060BCEI controls multiplexing of the 10-bit conversion result across the 8-bit data bus (D7–D0). When HBEN = 1, D0 and D1 carry the two most significant bits (D8/D9); when HBEN = 0, D0 and D1 carry the two least significant bits (D0/D1). This allows full 10-bit reads in two consecutive cycles without requiring a 10-bit wide bus, preserving compatibility with standard 8-bit microprocessor data paths while retaining resolution integrity.

Can the MAX1060BCEI interface directly with a 3.3V microcontroller?

Yes, the MAX1060BCEI can interface directly with a 3.3V microcontroller using its VLOGIC pin. By supplying +3.3V to VLOGIC (pin 28), the device configures its digital outputs (D7–D0, INT, RD, WR, CS) to swing between 0V and 3.3V, matching the microcontroller's logic thresholds. Input pins (RD, WR, CS, HBEN) accept 3.3V-compatible levels (VIH ≥ 2.0V, VIL ≤ 0.8V at VLOGIC = 3.3V), eliminating level-shifters. The analog supply (VDD = +5V) remains independent, preserving ADC performance.

What is the minimum acquisition time required before conversion starts on the MAX1060BCEI?

The minimum acquisition time (tACQ) for the MAX1060BCEI is 3.2µs in internal acquisition mode and scales with external clock frequency in external mode. This parameter is defined as the time needed for the internal track-and-hold capacitor to settle to within ½ LSB of final value. For source impedances ≤3kΩ, no additional external settling time is required. With higher source impedances, tACQ increases per tACQ = 7(RS + 800Ω) × 12pF - so a 10kΩ source raises tACQ to ~10.6µs, necessitating longer inter-conversion delays to maintain accuracy.