Analog Devices Inc. AD4698BCPZ

Overview

AD4698BCPZ from Analog Devices is a 16-bit, 8-channel, 1 MSPS multiplexed SAR ADC with Easy Drive architecture, on-chip oversampling (OSR = 64), ±1 LSB INL, and 93 dB SINAD at 1 kHz - deployed in photodiode monitoring and battery-powered medical instrumentation requiring high channel density and low analog drive burden.

For engineers reviewing the AD4698BCPZ datasheet, AD4698BCPZ pinout, AD4698BCPZ application, or AD4698BCPZ equivalent, key selection criteria include guaranteed 16-bit no-missing-codes operation, 715 ns acquisition time at 1 MSPS, internal LDO support for single 2.7–5.5 V analog supply, overvoltage protection up to 5 mA per input, and WLCSP/LFCSP package options with −40°C to +125°C operation.

Technical Context

The AD4698BCPZ implements a true 16-bit SAR core with integrated 8-channel low-crosstalk multiplexer, autonomous autocycle mode, and configurable channel sequencer. Its Easy Drive architecture enables analog input high-Z and reference input high-Z modes, eliminating need for external op-amp drivers and reducing AFE component count.

Digital functionality includes on-chip oversampling/decimation, threshold detection with alert indicators, offset/gain correction registers, and dual-/quad-SDO SPI interface supporting 1.14–1.98 V logic. The device operates with internal LDO enabled (2.4–5.5 V LDO_IN) or disabled (1.71–1.89 V VDD), delivering 8 mW power dissipation at 1 MSPS with 4 µW standby when LDO is off.

Key Specifications

Pinout & Package

AD4698BCPZ is packaged in a 24-lead, 4.00 mm × 4.00 mm lead frame chip scale package (LFCSP), compatible with standard reflow processes and optimized for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision multichannel ADC applications.

Compared with AD4697BCPZ, the AD4698BCPZ trades identical packaging and features for doubled throughput and higher active power; versus AD7606C-16, it replaces parallel complexity with SPI simplicity and adds autonomous digital functionality - making it optimal for modern low-power, software-defined measurement systems.

Availability

AD4698BCPZ is available at Aetrix Electronics and suitable for photodiode monitoring, medical instrumentation, and electronic test and measurement applications requiring stable component supply, extended temperature operation, and guaranteed 16-bit precision.

Supply support for AD4698BCPZ 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, with design centers worldwide.

The AD4698BCPZ belongs to Analog Devices' Easy Drive precision ADC product line, engineered specifically for space-constrained, multichannel data acquisition systems where analog drive simplification, low power, and autonomous digital features reduce system-level design effort.

FAQ

What is the maximum sample rate supported by the AD4698BCPZ?

The AD4698BCPZ supports a maximum sample rate of 1 MSPS in standard conversion mode. This is confirmed in the datasheet Rev. B specifications table (Table 1), where "Sample Rate" for AD4698 is listed as 1 MSPS under "Autocycle mode disabled". The AD4698BCPZ is the 1 MSPS variant of the AD4697/AD4698 family, distinct from the AD4697BCPZ which is rated at 500 kSPS.

Does the AD4698BCPZ include an internal reference buffer?

No, the AD4698BCPZ does not include an internal reference buffer. According to the datasheet Rev. B, Section 1 ("Features") and Table 1 footnote 7, the on-chip reference buffer is available only on the WLCSP package variant (e.g., AD4698BCPZ-RL7 in 36-ball WLCSP), not on the LFCSP package. The AD4698BCPZ is the 24-lead LFCSP variant, and its REFIN pin is not functional - reference must be applied externally to the REF pin.

What package type is used for the AD4698BCPZ?

The AD4698BCPZ uses a 24-lead, 4.00 mm × 4.00 mm lead frame chip scale package (LFCSP). This is explicitly stated in the "General Description" section and "Outline Dimensions" (page 108) of the Rev. B datasheet. The "BCPZ" suffix denotes the LFCSP package, distinguishing it from the WLCSP variant (e.g., AD4698BWCPZ).

Can the AD4698BCPZ operate with a single analog supply?

Yes, the AD4698BCPZ supports single analog supply operation from 2.7 V to 5.5 V on AVDD, enabled by its integrated internal LDO. When the internal LDO is enabled, LDO_IN supplies the LDO regulator (2.4–5.5 V), allowing AVDD to be powered directly from the same rail. This architecture eliminates need for separate analog and digital supplies in many compact systems.

What is the guaranteed integral nonlinearity (INL) specification for the AD4698BCPZ?

The AD4698BCPZ guarantees ±1 LSB maximum integral nonlinearity (INL) over the full operating temperature range of −40°C to +125°C in the LFCSP package, as specified in Table 1 of the Rev. B datasheet under "Integral Nonlinearity Error (INL)", condition "LFCSP, TA = −40°C to +125°C". This ensures monotonicity and precision across industrial and automotive environments.