Analog Devices Inc. AD7386BCPZ-RL

Overview

AD7386BCPZ-RL from Analog Devices is a 16-bit, dual simultaneous sampling SAR ADC with 4-channel input (via integrated 2:1 multiplexers), 4 MSPS throughput, ±1.5 LSB typical INL, and on-chip 2.5 V reference (10 ppm/°C max). It operates from −40°C to +125°C in motor control current sense and position feedback systems requiring high channel-to-channel isolation (−109.7 dB) and low aperture jitter (20 ps).

For engineers reviewing the AD7386BCPZ-RL datasheet, AD7386BCPZ-RL pinout, AD7386BCPZ-RL application, or AD7386BCPZ-RL equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal and timing behavior at 4 MSPS, and real-world use cases in high-speed industrial sensing where dual-simultaneous sampling and oversampling-enabled SNR boost (up to 93 dB) are critical.

Technical Context

The AD7386BCPZ-RL implements two independent SAR ADC cores with synchronized sampling clocks and shared serial interface logic. Its on-chip sequencer supports automatic channel-pair cycling (AINA0/AINA1 and AINB0/AINB1), while the integrated oversampling block performs normal averaging (OSR = 4) or rolling average (OSR = 8) to enhance dynamic range without external processing.

It features separate analog (VCC) and logic (VLOGIC) supplies-enabling 1.65 V to 3.6 V I/O compatibility-and uses a falling-edge CS signal to initiate conversion and frame SPI data transfers. The internal 2.5 V reference is buffered and temperature-stable (≤10 ppm/°C), and REFIO supports external 2.49 V–3.4 V references with configurable selection via CONFIGURATION1 register.

Key Specifications

Pinout & Package

AD7386BCPZ-RL is housed in a 16-lead, 3 mm × 3 mm LFCSP package with exposed pad (EPAD) that must be connected to GND for thermal and electrical stability. Pin layout follows standard top-view orientation with dual analog input banks (AINA0/AINA1 and AINB0/AINB1), dual serial data outputs (SDOA, SDOB/ALERT), and dedicated reference decoupling pins (REFCAP, REGCAP).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-simultaneous sampling ADC applications.

Compared with AD7387BCPZ-RL and AD7388BCPZ-RL, the AD7386BCPZ-RL provides the highest resolution (16-bit) and best SNR (87.5 dB), making it optimal for applications demanding maximum dynamic range-such as high-fidelity sonar echo digitization or precision power analyzer front-ends-where oversampling can further extend effective resolution to 18-bit-equivalent at reduced bandwidth.

Availability

AD7386BCPZ-RL is available at Aetrix Electronics and suitable for motor control position feedback, sonar echo digitization, and power quality monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD7386BCPZ-RL 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The AD7386BCPZ-RL belongs to the AD738x family of dual simultaneous sampling SAR ADCs, designed specifically for industrial and automotive real-time sensing where synchronized multi-channel acquisition, on-chip oversampling, and extended temperature operation are mandatory.

FAQ

What is the maximum sampling rate supported by the AD7386BCPZ-RL in dual simultaneous mode?

The AD7386BCPZ-RL achieves 4 MSPS throughput when sampling a single channel pair (e.g., AINA0/AINA1 or AINB0/AINB1). In alternating channel mode (SEQ = 1), the effective rate drops to 2 MSPS per channel. This is confirmed in Table 1 of the Rev. A datasheet under "THROUGHPUT" with fSAMPLE = 4 MSPS and SEQ = 1 condition.

Does the AD7386BCPZ-RL support external reference voltage, and what is the acceptable range?

Yes, the AD7386BCPZ-RL supports external reference via the REFIO pin. The valid range is 2.49 V to 3.4 V, as specified in Table 4 ("ALL DEVICES") under "VREF Input Voltage Range". Operation with 3.3 V external reference yields 87.5 dB typical SNR and 87.8 dB dynamic range, per Table 1 AC Accuracy section.

How does the oversampling feature improve performance in the AD7386BCPZ-RL?

The AD7386BCPZ-RL implements two oversampling modes: normal averaging (OSR = 4) and rolling average (OSR = 8). At OSR = 8 with internal 2.5 V reference, SNR improves from 87.5 dB to 93 dB-a 5.5 dB noise floor reduction-enabling higher effective resolution without external DSP. This is documented in the FEATURES section and Figure 10 FFT plot.

What is the operating temperature range for the AD7386BCPZ-RL, and is it automotive-qualified?

The AD7386BCPZ-RL is specified for −40°C to +125°C operation, as stated in both the GENERAL DESCRIPTION and ABSOLUTE MAXIMUM RATINGS sections. While not AEC-Q100 certified, its extended temperature rating and robust parametric performance across this range make it suitable for under-hood automotive motor control and industrial drive applications.

Can the AD7386BCPZ-RL interface directly with a 1.8 V microcontroller?

Yes-the AD7386BCPZ-RL features a separate VLOGIC supply (1.65 V to 3.6 V), allowing direct SPI interface with 1.8 V MCUs without level translation. The digital inputs (CS, SDI, SCLK) accept 0.2×VLOGIC low and 0.8×VLOGIC high logic thresholds, and outputs (SDOA, SDOB/ALERT) drive to VLOGIC − 0.3 V high, per Table 4 timing and logic specifications.