Analog Devices Inc. AD4000BRMZ-RL7

Overview

AD4000BRMZ-RL7 from Analog Devices is a 16-bit, 2 MSPS precision pseudo-differential successive approximation register (SAR) analog-to-digital converter with Easy Drive architecture, high-Z input mode, and integrated input overvoltage clamp. It operates from a single 1.8 V supply, supports external reference voltages from 2.4 V to 5.1 V, and delivers ±1.0 LSB INL, 93 dB SNR at 1 kHz, and −115 dB THD - enabling high-fidelity data acquisition in battery-powered instrumentation and industrial control systems.

For engineers reviewing the AD4000BRMZ-RL7 datasheet, AD4000BRMZ-RL7 pinout, AD4000BRMZ-RL7 application, or AD4000BRMZ-RL7 equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The AD4000BRMZ-RL7 implements a true SAR architecture with no pipeline latency - delivering first-conversion accuracy and deterministic timing. Its Easy Drive features include an extended acquisition phase (290 ns at 2 MSPS) and high-Z mode, which reduce driver amplifier bandwidth and power requirements while maintaining full 16-bit linearity.

It integrates an input overvoltage clamp that sinks up to 50 mA per input and deactivates within 360 ns, protecting both the ADC core and reference pin. The SPI-compatible serial interface supports 1.8 V to 5 V logic via separate VIO, enables turbo mode for 2 MSPS throughput at ≥70 MHz SCK, and eliminates need for negative supply in driver stages via span compression.

Key Specifications

Pinout & Package

AD4000BRMZ-RL7 is housed in a 10-lead MSOP package (3 mm × 4.90 mm), with exposed pad connected to GND. Pin functions are validated per Analog Devices Rev. F datasheet Figure 2 and Table 7.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD4000BRMZ-RL7, AD4004BRMZ-RL7 trades 50% throughput for ~40% lower power and longer acquisition time, while AD4008BRMZ-RL7 further reduces speed and power by half - all three share identical pinout, package, reference interface, and Easy Drive feature set, enabling scalable design reuse across performance tiers.

Availability

AD4000BRMZ-RL7 is available at Aetrix Electronics and suitable for automated test equipment, industrial motor control, and portable medical instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD4000BRMZ-RL7 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 semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The AD4000/AD4004/AD4008 product line was designed specifically for precision data acquisition systems demanding high speed, low power, and simplified signal chain design - emphasizing ease-of-drive, robustness, and guaranteed 16-bit performance across temperature.

FAQ

What is the maximum sampling rate supported by the AD4000BRMZ-RL7?

The AD4000BRMZ-RL7 supports a maximum throughput rate of 2 MSPS when turbo mode is enabled and the SCK clock frequency is ≥70 MHz. This is confirmed in the Rev. F datasheet Table 4 and Timing Specifications section. At lower SCK rates or in standard CS mode, the achievable rate drops to 1.82 MSPS or less. The AD4000BRMZ-RL7 achieves this without pipeline delay, delivering first-conversion accuracy at full speed.

Does the AD4000BRMZ-RL7 require a negative supply voltage for its analog input stage?

No, the AD4000BRMZ-RL7 does not require a negative supply. Its pseudo-differential input architecture uses span compression to allow full-scale input range (0 V to VREF) while preserving access to the entire 16-bit code space - eliminating the need for dual-supply op-amp drivers. This is explicitly stated in the General Description and Circuit Information sections of the Rev. F datasheet.

How does the high-Z mode affect the AD4000BRMZ-RL7's analog input behavior?

When enabled via SPI register write, high-Z mode reduces the AD4000BRMZ-RL7's analog input charging current to ≤1 µA at DC and improves distortion performance up to 100 kHz. However, it extends acquisition time and is not recommended for multiplexed or >100 kHz input signals. The Rev. F datasheet specifies this behavior in the Ease of Drive Features and Timing Specifications sections.

What package type is used for the AD4000BRMZ-RL7, and is the exposed pad internally connected?

The AD4000BRMZ-RL7 uses a 10-lead MSOP package (3 mm × 4.90 mm), not LFCSP - the "RMZ" suffix denotes MSOP. Unlike the LFCSP variant (CP-10-9), the MSOP has no exposed pad. This is confirmed in the Ordering Guide and Pin Configurations section (Figure 2) of the Rev. F datasheet, where only the LFCSP drawing shows EPAD.

Can the AD4000BRMZ-RL7 operate with a 2.5 V reference voltage, and what impact does that have on performance?

Yes, the AD4000BRMZ-RL7 supports VREF from 2.4 V to 5.1 V. At 2.5 V, SNR drops to 87.5 dB and THD to −113 dB (fIN = 1 kHz), per Table 1. Dynamic range remains usable but reduced versus 5 V operation. Reference current draw also scales down to 0.325 mA at 1 MSPS (AD4004), confirming proportional scaling across the family - including the AD4000BRMZ-RL7 at 2 MSPS.