Analog Devices Inc. AD7367BRUZ-5-RL7

Overview

AD7367BRUZ-5-RL7 from Analog Devices is a dual-channel, 14-bit, simultaneous-sampling SAR ADC with true bipolar input capability (±10 V, ±5 V, 0 V to +10 V), 500 kSPS throughput, and on-chip 2.5 V ±0.2% reference. It operates from ±16.5 V analog supplies and features high channel-to-channel isolation (−90 dB) for precision industrial data acquisition systems.

For engineers reviewing the AD7367BRUZ-5-RL7 datasheet, AD7367BRUZ-5-RL7 pinout, AD7367BRUZ-5-RL7 application, or AD7367BRUZ-5-RL7 equivalent, key selection criteria include simultaneous dual-channel sampling latency (<2 μs read time), SNR of 76 dB at 50 kHz, 14-bit no-missing-codes performance, and iCMOS® process support for high-voltage bipolar signal conditioning in compact TSSOP-24 packaging.

Technical Context

The AD7367BRUZ-5-RL7 integrates two independent 14-bit SAR ADC cores, each preceded by a track-and-hold amplifier and 2-channel multiplexer, enabling true simultaneous sampling of VA1/VA2 and VB1/VB2. Its iCMOS® process allows ±16.5 V analog supply rails while maintaining low power consumption (4–5.5 mW operational at 500 kSPS).

Conversion is initiated by a falling edge on CNVST; BUSY goes high during conversion and falls upon completion. Data is serially output MSB-first via DOUTA/DOUTB with SPI-/QSPI-/MICROWIRE-/DSP-compatible timing-14 SCLK cycles per ADC result-and supports flexible range selection (RANGE0/RANGE1) and internal/external reference switching (REFSEL).

Key Specifications

Pinout & Package

AD7367BRUZ-5-RL7 is housed in a 24-lead TSSOP package (4.4 mm × 7.8 mm, 0.65 mm pitch) with exposed pad for thermal enhancement. Pin assignments are validated per Analog Devices Rev. B datasheet Figure 2 and Table 6.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7367BRUZ-5-RL7, AD7366BRUZ-5-RL7 trades 2 bits of resolution for marginally lower power and identical footprint, while ADS8684IPWR offers +2 bits but sacrifices bipolar input support and channel isolation-making AD7367BRUZ-5-RL7 optimal for industrial ±10 V simultaneous acquisition where SNR and isolation are non-negotiable.

Availability

AD7367BRUZ-5-RL7 is available at Aetrix Electronics and suitable for industrial PLC analog input modules, motor drive current/voltage sensing, and portable power quality analyzers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for AD7367BRUZ-5-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs, serving industrial, automotive, communications, and healthcare markets since 1965.

The AD7367-5 product line delivers dual-channel, simultaneous-sampling SAR ADCs optimized for high-accuracy, high-voltage industrial data acquisition-designed to replace discrete op-amp + ADC signal chains in PLCs, energy meters, and test equipment.

FAQ

What is the maximum analog input voltage range supported by the AD7367BRUZ-5-RL7?

The AD7367BRUZ-5-RL7 supports true bipolar analog input ranges of ±10 V, ±5 V, and 0 V to +10 V, all programmable via RANGE0 and RANGE1 pins. With an external 3 V reference applied to DCAPA/DCAPB and minimum ±12 V supplies (VDD ≥ +12 V, VSS ≤ −12 V), it accepts ±12 V inputs. Absolute maximum analog input is VSS − 0.3 V to VDD + 0.3 V per the datasheet Absolute Maximum Ratings table.

Does the AD7367BRUZ-5-RL7 require external decoupling capacitors, and if so, where?

Yes, the AD7367BRUZ-5-RL7 requires external decoupling capacitors at multiple locations: 10 μF + 100 nF on AVCC and DVCC (to AGND and DGND respectively), 10 μF + 100 nF on VDD and VSS (to AGND), and 680 nF on DCAPA and DCAPB (to AGND). These are mandatory per the datasheet Pin Function Descriptions section to ensure stable reference buffering, analog supply integrity, and noise immunity-omission degrades SNR and causes conversion errors in AD7367BRUZ-5-RL7 operation.

How does the AD7367BRUZ-5-RL7 achieve simultaneous sampling across both ADC channels?

The AD7367BRUZ-5-RL7 achieves true simultaneous sampling using independent track-and-hold amplifiers for each ADC core (ADC A and ADC B), both triggered by the same CNVST falling edge. This ensures identical aperture time for VA1/VA2 and VB1/VB2 inputs. Conversion proceeds in parallel, and results are available simultaneously on DOUTA and DOUTB within 1.25 μs-verified in the Timing Specifications table and Functional Block Diagram of the AD7367BRUZ-5-RL7 datasheet.

Can the AD7367BRUZ-5-RL7 operate with only a single positive supply, or does it require dual analog supplies?

The AD7367BRUZ-5-RL7 requires dual analog supplies: a positive rail (VDD = +5 V to +16.5 V) and a negative rail (VSS = −16.5 V to −5 V). It cannot operate with only a single positive supply. This dual-rail architecture enables its true bipolar input capability and high-voltage tolerance. The digital supply (DVCC/AVCC) is separate and operates at 4.75 V to 5.25 V. Attempting single-supply operation violates Absolute Maximum Ratings and will damage the AD7367BRUZ-5-RL7.

What is the significance of the iCMOS® process used in the AD7367BRUZ-5-RL7?

The iCMOS® process in the AD7367BRUZ-5-RL7 integrates high-voltage CMOS and low-voltage CMOS on a single die, enabling ±16.5 V analog supply operation while maintaining low power consumption (5.5 mW at 500 kSPS) and small TSSOP-24 packaging. This eliminates the need for external level shifters or isolated power supplies in industrial systems-directly supporting ±10 V sensor interfaces and reducing system complexity versus standard CMOS ADCs like the AD7367BRUZ-5-RL7.