Analog Devices Inc. AD4630-24BBCZ-RL

Overview

AD4630-24BBCZ-RL from Analog Devices is a dual-channel, simultaneous-sampling, 24-bit SAR ADC with 2 MSPS per channel throughput, ±0.9 ppm INL over −40°C to +125°C, 105.7 dB SNR, and integrated reference buffer. It serves as the precision digitization core in high-fidelity signal chains for seismic data acquisition and automated test equipment.

For engineers reviewing the AD4630-24BBCZ-RL datasheet, AD4630-24BBCZ-RL pinout, AD4630-24BBCZ-RL application, or AD4630-24BBCZ-RL equivalent, key selection criteria include guaranteed 24-bit no-missing-codes performance, Easy Drive analog input architecture enabling low-input-current operation at 2 MSPS, Flexi-SPI interface with echo clock mode for digital isolation, and 7 mm × 7 mm CSP_BGA package with internal bypass capacitors.

Technical Context

The AD4630-24BBCZ-RL implements a successive approximation register architecture with simultaneous sampling across two independent channels, supporting both single-ended and differential inputs. Its Easy Drive input stage reduces charge injection and settling burden on external drivers, while the programmable block averaging filter extends effective resolution to 30 bits and dynamic range to 153 dB.

Flexi-SPI supports 1/2/4 SDO lanes per channel and multiple clocking modes-including echo clock and host clock modes-to relax timing constraints and simplify integration with isolated microcontrollers or FPGAs. The internal reference buffer accepts 4.096 V to 5 V external references and includes a dedicated 2 μF internal bypass capacitor on the REF pin.

Key Specifications

Pinout & Package

AD4630-24BBCZ-RL uses a 7 mm × 7 mm, 64-ball chip-scale package ball grid array (CSP_BGA) with internal supply and reference bypass capacitors. Pin functions are validated per Analog Devices Rev. B datasheet Figure 11 and Table 11.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision SAR ADC applications.

Compared with AD4630-24BBCZ-RL, AD4032BCPZ-RL7 trades 6 bits of resolution and reference integration for smaller size and lower power, while ADS8924BRGER offers comparable speed but demands full external reference and decoupling design-making AD4630-24BBCZ-RL optimal for applications prioritizing metrology-grade linearity, ease of layout, and system-level noise reduction.

Availability

AD4630-24BBCZ-RL is available at Aetrix Electronics and suitable for seismic instrumentation, automated test equipment, digital control loops, scientific instrumentation, and medical diagnostics requiring stable component supply and long-term manufacturability.

Supply support for AD4630-24BBCZ-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 Wilmington, MA.

The AD4630-24BBCZ-RL belongs to Analog Devices' precision SAR ADC product line, engineered for applications demanding uncompromised dc accuracy, ultra-low noise, and robust operation across extended industrial temperatures.

FAQ

What is the maximum guaranteed INL for AD4630-24BBCZ-RL across temperature?

The AD4630-24BBCZ-RL guarantees ±0.9 ppm integral nonlinearity from −40°C to +125°C, ensuring 24-bit monotonicity and metrology-grade linearity without system-level correction. This specification is tested and specified across the full industrial temperature range, making AD4630-24BBCZ-RL suitable for harsh-environment instrumentation where calibration drift must be minimized.

Does AD4630-24BBCZ-RL require external bypass capacitors?

No-AD4630-24BBCZ-RL integrates 1 µF on VDD_5V, 0.2 µF on VIO, and 2 µF on REF internally. These eliminate the need for external bulk capacitors at those pins, reducing PCB footprint and improving immunity to layout-induced noise. Only local high-frequency ceramic decoupling (e.g., 10 nF) near VDD_5V and VDD_1.8V is recommended per the layout guidelines in the AD4630-24 datasheet.

How does the Flexi-SPI interface of AD4630-24BBCZ-RL simplify digital isolation?

The AD4630-24BBCZ-RL Flexi-SPI supports echo clock mode, where BUSY/SCKOUT outputs a clean replica of the host's SCK signal. This eliminates timing skew between clock and data across isolators, relaxing setup/hold margins and enabling reliable operation with slower, lower-cost digital isolators-even at 2 MSPS sampling. The feature is implemented in hardware and requires no firmware overhead.

Can AD4630-24BBCZ-RL operate with a 4.096 V external reference?

Yes-AD4630-24BBCZ-RL supports 4.096 V to 5 V external references on REFIN (with buffer enabled) or REF (with buffer disabled). When using 4.096 V, the REFIN voltage range is 4.046 V to 4.146 V (at VDD_5V = 4.75 V–5.25 V), and SNR improves to 104 dB with SFDR reaching 130 dB, as verified in Table 1 of the Rev. B datasheet.

What is the minimum acquisition phase time for AD4630-24BBCZ-RL at 2 MSPS?

At 2 MSPS, the AD4630-24BBCZ-RL guarantees a minimum acquisition phase of 244 ns (typical 260 ns, max 275 ns), defined as the time available for input sampling capacitors to settle before conversion begins. This short, deterministic window enables tight timing control in high-speed synchronous systems and is validated across temperature and process corners.