Analog Devices Inc. AD4696BCBZ-RL7

Overview

AD4696BCBZ-RL7 from Analog Devices is a 16-bit, 16-channel, 1 MSPS multiplexed SAR ADC with Easy Drive architecture, integrated overvoltage protection (±5 mA per input), on-chip oversampling (up to OSR = 64), and autonomous conversion mode. It operates from −40°C to +125°C in a 36-ball WLCSP package and targets high-density precision data acquisition in photodiode monitoring and medical instrumentation.

For engineers reviewing the AD4696BCBZ-RL7 datasheet, AD4696BCBZ-RL7 pinout, AD4696BCBZ-RL7 application, or AD4696BCBZ-RL7 equivalent, key selection criteria include guaranteed 16-bit no-missing-codes performance, 93 dB SINAD at 1 kHz, 111.2 dB oversampled dynamic range, low 8 mW power at 1 MSPS, and support for 1.14 V–1.98 V logic SPI interfaces.

Technical Context

The AD4696BCBZ-RL7 implements a true 16-bit SAR core with first-conversion accuracy and zero pipeline latency. Its analog input high-Z mode and reference input high-Z mode eliminate external driver requirements, while internal overvoltage clamp circuits limit input current to 5 mA per channel and prevent crosstalk degradation during fault events.

Digital functionality includes a customizable channel sequencer, on-chip threshold detection with alert indicators, offset/gain correction registers, and autocycle mode enabling interrupt-driven firmware. The WLCSP variant integrates a buffered reference input (REFIN) with 11 mA output drive capability and 50 pF input capacitance.

Key Specifications

Pinout & Package

AD4696BCBZ-RL7 is housed in a 36-ball, 2.96 mm × 2.96 mm wafer-level chip scale package (WLCSP) with 0.4 mm pitch. The package supports solder reflow per JEDEC J-STD-020 and features exposed die attach pad for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD4696BCBZ-RL7, AD4695BCBZ-RL7 offers identical functionality at half the sample rate and power, while ADS8686SIPWR trades channel density for integrated signal conditioning-making AD4696BCBZ-RL7 optimal for space-constrained, high-channel-count precision acquisition where autonomous operation and minimal external components are critical.

Availability

AD4696BCBZ-RL7 is available at Aetrix Electronics and suitable for photodiode monitoring, medical instrumentation, and electronic test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD4696BCBZ-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, headquartered in Wilmington, MA.

The AD4695/AD4696 product line was designed for space-constrained, multichannel precision data acquisition systems requiring low power, high accuracy, and simplified analog front-end design-targeting medical, industrial, and test equipment markets.

FAQ

What is the maximum sample rate supported by the AD4696BCBZ-RL7?

The AD4696BCBZ-RL7 supports a maximum sample rate of 1 MSPS in conversion mode. This applies to both unipolar and pseudobipolar input configurations, with the device maintaining guaranteed 16-bit no-missing-codes performance and ±1.0 LSB INL across its full operating temperature range of −40°C to +125°C. The AD4696BCBZ-RL7 achieves this rate while consuming only 8 mW from AVDD.

Does the AD4696BCBZ-RL7 include an integrated reference buffer?

Yes, the AD4696BCBZ-RL7 includes an integrated reference buffer on the REFIN pin, as confirmed by its WLCSP package designation and datasheet specifications. This buffer supports up to 11 mA output current in boost mode, has 50 pF input capacitance, and enables direct connection to low-noise external references without external buffering-reducing BOM count and board area.

How does the Easy Drive feature of the AD4696BCBZ-RL7 reduce system design complexity?

The Easy Drive feature of the AD4696BCBZ-RL7 reduces system design complexity by enabling analog input high-Z mode and reference input high-Z mode, which lower required drive current to just 6 µA at 1 MSPS and 12 µA respectively. This eliminates the need for dedicated high-speed op-amp drivers and external reference buffers, simplifying analog front-end design and increasing channel density in space-constrained layouts.

What overvoltage protection capabilities does the AD4696BCBZ-RL7 provide on its analog inputs?

The AD4696BCBZ-RL7 provides per-input overvoltage protection clamps rated for up to ±5 mA, with activation at VREF + 0.55 V and deactivation at VREF + 0.1 V. Each clamp operates independently to prevent fault propagation between channels, and the device maintains specified performance even with all clamps active-enabling robust operation in noisy industrial environments without external protection circuitry.

Can the AD4696BCBZ-RL7 operate autonomously without host processor intervention?

Yes, the AD4696BCBZ-RL7 supports autonomous conversion via its autocycle mode, which performs fully self-timed conversions with programmable sample periods ranging from 8.5 µs to 920 µs. It generates ALERT interrupts upon threshold violations and supports configurable channel sequencing-allowing the host processor to remain in low-power sleep states until actionable data is ready, significantly reducing firmware overhead and system power.