Analog Devices Inc. AD4130-8BCPZ-RL7

Overview

AD4130-8BCPZ-RL7 from Analog Devices is an ultra-low-power, 24-bit sigma-delta ADC with integrated PGA, FIFO, and sensor biasing circuitry. It delivers 25 nV rms noise at 1.17 SPS (gain = 128), operates from 1.71 V to 3.6 V single supply, supports 8 differential or 16 pseudo-differential inputs, and consumes just 32 µA in continuous conversion mode - enabling multi-year battery life in wireless sensor nodes.

For engineers reviewing the AD4130-8BCPZ-RL7 datasheet, AD4130-8BCPZ-RL7 pinout, AD4130-8BCPZ-RL7 application, or AD4130-8BCPZ-RL7 equivalent, key selection criteria include its 32 µA active current, 256-deep FIFO for autonomous sampling, duty-cycling support (1/4 or 1/16 ratio), matched excitation currents for RTDs, and LFCSP-32 pin compatibility with AD7124-8.

Technical Context

The AD4130-8BCPZ-RL7 integrates a 24-bit sigma-delta ADC core with programmable gain amplifier (1× to 128×), on-chip 2.5 V/1.25 V band gap reference (15 ppm/°C drift), and crosspoint multiplexer supporting up to 16 single-ended inputs. Its smart sequencer manages up to 16 preconfigured channels with independent filter, ODR, and gain settings per channel.

Digital functionality includes 5 MHz SPI interface (3-/4-wire), CRC-protected register access, autonomous FIFO interrupt generation, and comprehensive diagnostics: open-wire detection via burnout currents, reference monitoring, analog input over/undervoltage detection, and internal temperature sensing (±1°C accuracy after calibration).

Key Specifications

Pinout & Package

AD4130-8BCPZ-RL7 is housed in a 32-lead, 5 mm × 5 mm LFCSP package with exposed thermal pad (EP). Pin functions are defined per Analog Devices' official pin configuration diagram (Rev. A, p.19).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision, low-power ADC applications.

Compared with AD4130-8BCPZ-RL7, AD7124-8BRUZ offers higher speed but lacks autonomous power-saving features, while ADS1220IPWR reduces integration to lower cost but increases design effort and board area - AD4130-8BCPZ-RL7 uniquely balances ultra-low power, sensor-specific integration, and diagnostic completeness in one LFCSP package.

Availability

AD4130-8BCPZ-RL7 is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical devices, and smart industrial transmitters requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.

Supply support for AD4130-8BCPZ-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 semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The AD4130-8BCPZ-RL7 belongs to Analog Devices' ultralow-power precision ADC product line, engineered specifically for battery- and energy-harvesting–powered measurement systems demanding >5-year operation without maintenance.

FAQ

What is the minimum supply voltage for reliable operation of the AD4130-8BCPZ-RL7?

The AD4130-8BCPZ-RL7 operates reliably down to 1.71 V on the AVDD rail, enabling extended runtime from primary batteries like CR2032 that discharge below 2.0 V. This specification is validated across the full −40°C to +125°C temperature range for the LFCSP variant, and allows the AD4130-8BCPZ-RL7 to remain functional during the final 15–20% of battery capacity where many competing ADCs cease operation.

Does the AD4130-8BCPZ-RL7 support simultaneous 50 Hz and 60 Hz rejection?

Yes, the AD4130-8BCPZ-RL7 supports simultaneous 50 Hz and 60 Hz line-frequency rejection using specific sinc3/sinc4 filter configurations with appropriate output data rates (e.g., 20 SPS or 60 SPS). This capability is explicitly documented in the Rejection Specifications table (p.9) and verified in Typical Performance Characteristics (Fig.64–65), making the AD4130-8BCPZ-RL7 suitable for global deployments where AC mains interference varies by region.

How does the FIFO in the AD4130-8BCPZ-RL7 reduce system-level power consumption?

The AD4130-8BCPZ-RL7's 256-deep FIFO allows the host MCU to remain in deep-sleep mode while the ADC autonomously acquires, processes, and buffers data. With FIFO interrupt enabled, the MCU wakes only when a predefined sample count (e.g., 64) is reached - reducing active time by up to 95% compared to polled operation. This behavior is confirmed in the General Description (p.5) and Applications Information (p.79) sections of the AD4130-8BCPZ-RL7 datasheet.

Can the AD4130-8BCPZ-RL7 perform open-wire detection on RTD sensors?

Yes, the AD4130-8BCPZ-RL7 implements open-wire detection using integrated burnout currents (I_BURN) applied to RTD leads. When enabled, this feature detects infinite resistance conditions and flags them via status bits and diagnostics registers. The functionality is detailed in the Diagnostics Specifications (Table 5) and Diagnostics section (p.69–72), and requires no external components - a key differentiator from alternatives like ADS1220IPWR.

Is the AD4130-8BCPZ-RL7 pin-compatible with any other Analog Devices ADCs?

Yes, the AD4130-8BCPZ-RL7 in the 32-lead LFCSP package is pin-compatible with the AD7124-8 LFCSP variant, sharing identical pin assignments for power, analog inputs, reference, SPI, and GPIOs. This compatibility is explicitly stated in the Features section (p.1) and confirmed in the Ordering Guide (p.113) of the AD4130-8BCPZ-RL7 datasheet, enabling drop-in migration where higher power budgets allow.