Analog Devices Inc. AD7276BRMZ

Overview

AD7276BRMZ from Analog Devices is a 12-bit, 3 MSPS successive approximation ADC in a 6-lead TSOT package, operating from 2.35 V to 3.6 V supply and delivering 70 dB SNR at 1 MHz input frequency. It features no pipeline delay, internal VDD-referenced conversion, and SPI/QSPI/MICROWIRE-compatible serial interface - deployed in high-speed sensor signal conditioning and portable instrumentation front-ends.

For engineers reviewing the AD7276BRMZ datasheet, AD7276BRMZ pinout, AD7276BRMZ application, or AD7276BRMZ equivalent, key selection criteria include its 3 MSPS throughput with 12.6 mW power at 3 V, −40°C to +125°C operation, and guaranteed no-missed-codes performance across full temperature range.

Technical Context

The AD7276BRMZ implements a track-and-hold amplifier with 55 MHz full-power bandwidth and 18 ps aperture jitter, enabling accurate sampling of wideband analog signals up to 1 MHz without external anti-aliasing complexity. Conversion is initiated on the falling edge of CS and completed in 291 ns (14 SCLK cycles at 48 MHz), with data output MSB-first as two leading zeros + 12-bit result + two trailing zeros.

Its reference is derived directly from VDD, yielding a 0 V to VDD unipolar input range and eliminating need for external reference components. Power management includes partial and full power-down modes drawing 34 μA and 0.1 μA typical, respectively - critical for battery-powered measurement systems requiring burst-mode acquisition.

Key Specifications

Pinout & Package

AD7276BRMZ uses a 6-lead TSOT package (2.9 mm × 1.6 mm × 0.8 mm), optimized for compact PCB layouts and thermal performance (θJA = 230°C/W). Pinout is fully defined per Analog Devices Rev. E datasheet Figure 8 and Table 7.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed SAR ADC applications.

Compared with AD7276BRMZ, AD7476ARMZ trades speed and package size for lower cost and simpler sourcing, while ADS7883IDBVR matches throughput and footprint but sacrifices automotive/industrial temperature capability - making AD7276BRMZ the sole option meeting 3 MSPS, 12-bit, 6-lead, and −40°C to +125°C simultaneously.

Availability

AD7276BRMZ is available at Aetrix Electronics and suitable for portable instrumentation, motor phase current sensing, and automotive engine control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD7276BRMZ 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving precision instrumentation, industrial automation, and automotive markets since 1965.

The AD7276BRMZ belongs to Analog Devices' high-speed SAR ADC product line, engineered for applications demanding simultaneous high resolution, fast throughput, low power, and robust operation in thermally demanding environments.

FAQ

What is the maximum sampling rate supported by the AD7276BRMZ?

The AD7276BRMZ supports a maximum throughput rate of 3 MSPS, achieved with a 48 MHz SCLK and 14-cycle serial interface timing. This corresponds to a minimum conversion cycle time of 333 ns, including acquisition and serial readout - verified across B-grade devices from −40°C to +125°C per Rev. E datasheet Table 2.

Does the AD7276BRMZ require an external voltage reference?

No, the AD7276BRMZ uses an internal reference derived from VDD, enabling a 0 V to VDD analog input range without external reference components. This simplifies system design and reduces bill-of-materials cost - confirmed in the General Description and Functional Block Diagram sections of the AD7276/AD7277/AD7278 Rev. E datasheet.

What package type is used for the AD7276BRMZ?

The AD7276BRMZ is packaged in a 6-lead TSOT (Thin Small Outline Transistor) with dimensions 2.9 mm × 1.6 mm × 0.8 mm. Pin configuration matches Figure 8 and Table 7 of the Rev. E datasheet, and thermal characteristics include θJA = 230°C/W - optimized for compact, high-density PCB layouts.

How does the AD7276BRMZ handle power management in low-duty-cycle systems?

The AD7276BRMZ offers two power-down modes: partial (34 μA typical) and full (0.1 μA typical). Full power-down retains register state and achieves sub-microamp quiescent current - ideal for battery-powered sensors that wake periodically to acquire bursts of data, as detailed in the Power Requirements section of the Rev. E datasheet.

Is the AD7276BRMZ pin-compatible with other members of the AD727x family?

Yes, the AD7276BRMZ shares identical 6-lead TSOT pinout with AD7277BRMZ and AD7278BRMZ, differing only in resolution (12-/10-/8-bit) and corresponding timing (14/12/10 SCLK cycles). This allows hardware reuse across performance tiers - explicitly stated in Table 1 and Product Highlights of the Rev. E datasheet.