Analog Devices Inc. AD7387BCPZ-RL

Overview

AD7387BCPZ-RL from Analog Devices is a 14-bit, dual simultaneous sampling SAR ADC with 4-channel single-ended inputs, 4 MSPS throughput, ±0.5 LSB typical INL, and operation across −40°C to +125°C. It integrates on-chip oversampling, a 2.5 V internal reference (10 ppm/°C max), and alert functionality for motor control current sense and power quality monitoring.

For engineers reviewing the AD7387BCPZ-RL datasheet, AD7387BCPZ-RL pinout, AD7387BCPZ-RL application, or AD7387BCPZ-RL equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal and timing behavior, and real-world use context for high-speed industrial data acquisition systems requiring dual-sampled, channel-matched analog input capture.

Technical Context

The AD7387BCPZ-RL implements two independent SAR ADC cores with synchronized sampling control, enabling true simultaneous conversion of two analog channel pairs (AINA0/AINA1 and AINB0/AINB1). Its integrated sequencer supports automatic channel cycling and configurable oversampling modes-normal averaging and rolling average-with OSR up to 8.

It features a buffered 2.5 V internal reference (±2 mV initial accuracy, 10 ppm/°C max drift) and accepts external references up to 3.3 V via REFIO. Digital interface uses SPI-compatible 4-wire protocol (CS, SCLK, SDI, SDOA/SDOB/ALERT) with 1.65 V–3.6 V logic supply (VLOGIC) and supports low-latency readback and register-based configuration.

Key Specifications

Pinout & Package

AD7387BCPZ-RL is housed in a 16-lead, 3 mm × 3 mm LFCSP package with exposed pad (EPAD) that must be soldered to GND for thermal and electrical integrity. Pin pitch is 0.5 mm; package code CP-16-451 per Analog Devices documentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7386BCPZ-RL and AD7388BCPZ-RL, the AD7387BCPZ-RL delivers optimal balance of 14-bit precision, 4 MSPS throughput, and −111.5 dB channel isolation-making it the preferred choice for industrial motor control and power quality systems where cost, size, and performance align at mid-tier resolution.

Availability

AD7387BCPZ-RL is available at Aetrix Electronics and suitable for motor control current sense, power quality monitoring, sonar signal acquisition, and EDFA monitoring requiring stable component supply across extended temperature and long production lifecycles.

Supply support for AD7387BCPZ-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, with R&D and manufacturing operations worldwide.

The AD7386/AD7387/AD7388 family was designed specifically for high-speed, dual-sampled industrial data acquisition-targeting motor control, power analytics, and real-time sensor fusion where simultaneous channel capture and on-chip oversampling reduce host processing load.

FAQ

What is the maximum sampling rate supported by the AD7387BCPZ-RL?

The AD7387BCPZ-RL supports a maximum throughput rate of 4 MSPS per ADC core when operating on a single channel pair (e.g., AINA0/AINA1). In alternating channel mode (SEQ = 1), the effective rate drops to 2 MSPS per channel. This is achieved with a minimum SCLK period of 12.5 ns and conversion time of 190 ns, as specified in the Rev. A datasheet.

Does the AD7387BCPZ-RL require an external reference voltage?

No, the AD7387BCPZ-RL includes a buffered 2.5 V internal reference with ±2 mV initial accuracy and a maximum temperature coefficient of 10 ppm/°C. An external reference (2.49 V–3.4 V) may be used via the REFIO pin, but it is optional-not required-for functional operation. The CONFIGURATION1 register's REFSEL bit configures the source.

How does the ALERT function work on the AD7387BCPZ-RL?

The ALERT function on the AD7387BCPZ-RL is implemented on the SDOB/ALERT pin, which operates as an open-drain, low-active output. It asserts when a conversion result exceeds user-programmed high or low thresholds stored in the ALERT_HIGH_THRESHOLD and ALERT_LOW_THRESHOLD registers. Latency from violation to assertion is 200 ns (tALERTS).

Can the AD7387BCPZ-RL interface directly with a 1.8 V microcontroller?

Yes, the AD7387BCPZ-RL supports 1.65 V–3.6 V logic supply (VLOGIC), making it fully compatible with 1.8 V microcontrollers. Its digital inputs (CS, SCLK, SDI) accept logic levels referenced to VLOGIC, and outputs (SDOA, SDOB/ALERT) drive to VLOGIC − 0.3 V (high) and 0.4 V (low) at 300 µA load-no level shifter is needed.

What package type and thermal characteristics does the AD7387BCPZ-RL have?

The AD7387BCPZ-RL uses a 16-lead, 3 mm × 3 mm LFCSP package (CP-16-451) with exposed pad. Its junction-to-case thermal resistance (θJC) is 12.7°C/W, and junction-to-ambient (θJA) is 55.4°C/W under JEDEC 2S2P test conditions. The EPAD must be soldered to a GND plane for thermal and electrical performance.