Analog Devices Inc./Maxim Integrated MAX1283BCUE+

Overview

MAX1283BCUE+ from Maxim Integrated is a 12-bit, 4-channel serial analog-to-digital converter (ADC) with internal +2.5V reference, single-supply operation from +2.7V to +3.6V, and 300ksps sampling rate. It features software-configurable unipolar/bipolar and single-ended/pseudo-differential inputs, integrated track/hold, and SPI/QSPI/MICROWIRE-compatible 4-wire serial interface - designed for battery-powered data acquisition systems requiring low power and compact size.

For engineers reviewing the MAX1283BCUE+ datasheet, MAX1283BCUE+ pinout, MAX1283BCUE+ application, or MAX1283BCUE+ equivalent, key selection criteria include its 300ksps throughput at 2.7–3.6V supply, ±1 LSB INL, 2.5mA typical supply current in normal mode, and TSSOP-16 package compatibility with space-constrained portable instrumentation.

Technical Context

The MAX1283BCUE+ employs successive-approximation register (SAR) architecture with an integrated track-and-hold circuit and 4-channel analog multiplexer. Its conversion timing is fully clocked by an external SCLK (up to 4.8MHz), with acquisition time of 625ns and conversion time of 3.3µs - enabling precise sampling of transient signals up to 3MHz full-power bandwidth.

It supports four programmable power modes (normal, reduced-power, fast power-down, full power-down), where full power-down draws only 2µA. The internal reference buffer provides ±1.5% adjustability via REFADJ, and external reference operation (1V to VDD) is supported by disabling the buffer.

Key Specifications

Pinout & Package

MAX1283BCUE+ is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch), optimized for automated assembly and thermal performance in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and AD7490BRUZ, MAX1283BCUE+ uniquely balances ultra-low standby current (2µA), integrated reference adjustability, and minimal 16-pin TSSOP footprint - making it optimal for space- and energy-constrained 4-channel measurement nodes where external reference complexity must be avoided.

Availability

MAX1283BCUE+ is available at Aetrix Electronics and suitable for portable data logging, battery-powered instruments, and medical diagnostics requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for MAX1283BCUE+ 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 MAX1282/MAX1283 product line was engineered for low-power, high-accuracy data acquisition in portable and battery-operated systems - emphasizing integration (multiplexer, T/H, reference, serial interface), supply flexibility, and robustness across temperature.

FAQ

What is the operating temperature range for MAX1283BCUE+?

The MAX1283BCUE+ is specified for operation from 0°C to +70°C. This commercial-grade temperature range is validated across all electrical parameters including INL (±1 LSB), gain error (±6.0 LSB), and supply current (2.5mA typical). The 'C' grade suffix explicitly denotes this 0°C to +70°C rating, distinguishing it from the 'E' grade (-40°C to +85°C) variant MAX1283BEUE+.

Does MAX1283BCUE+ require an external reference voltage?

No, MAX1283BCUE+ does not require an external reference voltage. It integrates a precision +2.500V ±0.8% internal reference with adjustable output via the REFADJ pin (±1.5% range). External reference operation is optional: pull REFADJ to VDD1 to disable the internal buffer and apply 1V to VDD at the REF pin.

How many analog input channels does MAX1283BCUE+ support?

MAX1283BCUE+ supports four analog input channels (CH0–CH3) with software-selectable configuration: either four single-ended inputs referenced to COM, or two pseudo-differential pairs (CH0/CH1 and CH2/CH3). The internal multiplexer and control logic enable channel selection via the 8-bit serial command word.

What serial interface protocols is MAX1283BCUE+ compatible with?

MAX1283BCUE+ is natively compatible with SPI, QSPI, and MICROWIRE 4-wire serial interfaces. It operates with CPOL = 0 and CPHA = 0, supports MSB-first data transfer, and uses active-low CS with SCLK-synchronized DOUT/SSTRB outputs - enabling direct connection to microcontrollers like ARM Cortex-M or TMS320 DSPs without level shifters or glue logic.

What power-saving modes are available on MAX1283BCUE+?

MAX1283BCUE+ offers four software-selectable power modes: Normal (2.5mA), Reduced Power (REDP, 1.3mA), Fast Power-Down (FASTPD, 0.9mA), and Full Power-Down (FULLPD, 2µA). Entry into any power-down mode is controlled via PD1/PD0 bits in the serial command word; the device automatically wakes on CS assertion, with turn-on time short enough to allow shutdown between consecutive conversions.