Analog Devices Inc./Maxim Integrated MAX1167BCEE+T

Overview

The MAX1167BCEE+T from Maxim Integrated is a 4-channel, 16-bit successive-approximation analog-to-digital converter (ADC) with integrated +4.096V reference, internal oscillator, and SPI/QSPI/MICROWIRE-compatible serial interface. It operates from a single +5V analog supply and supports digital logic levels from +2.7V to +5.5V, consuming only 3.6mA at 200ksps with external reference. It targets precision data acquisition in space-constrained industrial control systems.

For engineers reviewing the MAX1167BCEE+T datasheet, MAX1167BCEE+T pinout, MAX1167BCEE+T application, or MAX1167BCEE+T equivalent, this page delivers verified electrical specs, thermal performance across 0°C to +70°C, scan-mode sequencing behavior, power-down current values at multiple sampling rates, and confirmed QSOP-16 package compatibility for layout integration.

Technical Context

The MAX1167BCEE+T implements a 16-bit SAR architecture with internal track-and-hold (4MHz input bandwidth), selectable internal/external reference, and automatic power-down triggered by CS high or reduced sampling rate. Its 4-channel multiplexer supports sequential or continuous conversion of AIN0–AIN3 in scan mode.

It uses a 3-wire SPI-compatible interface (SCLK, DIN, DOUT) with EOC signaling and supports both internal clock (3.2–4.0MHz) and external clock (up to 9MHz) operation. The device features no missing codes over temperature and guarantees ±3 LSB INL across its commercial temperature range.

Key Specifications

Pinout & Package

MAX1167BCEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), optimized for compact PCB layouts in industrial I/O modules and sensor signal chains.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multichannel, 16-bit ADC applications.

Compared with ADS8684IPWRT and AD7682BCPZ-RL7, the MAX1167BCEE+T uniquely combines integrated +4.096V reference, AutoShutdown™ down to <10µA, and guaranteed ±3 LSB INL in a 16-pin QSOP - making it optimal for compact, self-contained industrial DAQ front-ends requiring minimal external components and predictable low-power behavior.

Availability

MAX1167BCEE+T is available at Aetrix Electronics and suitable for motor control feedback loops, industrial thermocouple interfaces, and data-acquisition system front-ends requiring stable component supply and long-term production continuity.

Supply support for MAX1167BCEE+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) designs high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets, emphasizing integration, reliability, and power efficiency.

The MAX1167BCEE+T belongs to Maxim's precision data-acquisition ADC family, engineered for space-constrained, low-power applications demanding high resolution, internal reference stability, and seamless microcontroller interfacing via SPI.

FAQ

What is the maximum sampling rate supported by the MAX1167BCEE+T?

The MAX1167BCEE+T achieves a maximum sampling rate of 200ksps when using an external 4.8MHz SCLK and 24-clock conversion cycle. At this rate, it consumes 3.6mA total supply current with external reference. Internal clock operation yields lower throughput (e.g., ~82ksps in 16-bit scan mode), but eliminates external clock source dependency. The MAX1167BCEE+T datasheet specifies timing margins for reliable operation across the full 0°C to +70°C range.

Does the MAX1167BCEE+T require an external reference voltage?

No, the MAX1167BCEE+T includes a factory-trimmed +4.096V internal reference with ±25ppm/°C temperature coefficient and 5ms wake-up time. It can operate fully autonomously using this reference, bypassed with a 0.1µF capacitor on REFCAP and 10µF on REF. An external reference (3.8V to AVDD−0.2V) may be used for tighter tolerance or custom scaling, but is not required for standard operation of the MAX1167BCEE+T.

How does the AutoShutdown™ feature reduce power consumption in the MAX1167BCEE+T?

AutoShutdown™ reduces MAX1167BCEE+T supply current based on sampling rate: 185µA at 10ksps, 1.85mA at 100ksps, and <10µA during extended idle periods. This is achieved by dynamically disabling internal circuitry (e.g., reference buffer, oscillator) between conversions. Full power-down (0.6µA) is entered when CS is held high - a hardware-controlled state independent of software configuration. These values are measured and guaranteed across the 0°C to +70°C operating range.

Can the MAX1167BCEE+T interface directly with a 3.3V microcontroller?

Yes, the MAX1167BCEE+T supports adjustable digital logic levels: DVDD accepts +2.7V to +5.25V, allowing direct connection to 3.3V microcontrollers without level-shifting circuitry. Its digital inputs (SCLK, CS, DIN) recognize VIH ≥ 0.7×DVDD and VIL ≤ 0.3×DVDD, while DOUT and EOC outputs drive VOH ≥ DVDD−0.4V and VOL ≤ 0.4V at specified loads. This interoperability is validated in the MAX1167BCEE+T electrical characteristics table.

What is the purpose of the REFCAP pin on the MAX1167BCEE+T?

The REFCAP pin on the MAX1167BCEE+T connects to the internal reference buffer's output node and must be bypassed with a 0.1µF capacitor to AGND when using the internal +4.096V reference. This capacitor stabilizes the reference output impedance and suppresses high-frequency noise that could degrade ADC accuracy. In external reference mode, the internal reference and buffer are disabled, and REFCAP is left unconnected - a design detail explicitly defined in the MAX1167BCEE+T pin description section.