Analog Devices Inc. AD4002BCPZ-RL7

Overview

AD4002BCPZ-RL7 from Analog Devices is an 18-bit, 2 MSPS pseudo-differential successive approximation register (SAR) analog-to-digital converter with Easy Drive input architecture, single 1.8 V supply operation, and SPI-compatible serial interface. It delivers ±3.2 LSB INL, 95 dB SNR at 1 kHz, and 98 dB oversampled dynamic range (OSR = 2), targeting high-precision data acquisition in space-constrained industrial and medical systems.

For engineers reviewing the AD4002BCPZ-RL7 datasheet, AD4002BCPZ-RL7 pinout, AD4002BCPZ-RL7 application, or AD4002BCPZ-RL7 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with documented differences, and supply support for volume deployment in precision instrumentation.

Technical Context

The AD4002BCPZ-RL7 implements a true SAR architecture with no pipeline latency-first conversion is accurate and deterministic. Its Easy Drive input reduces acquisition-phase current to ≤1 μA at 2 MSPS and extends acquisition time to ≥79% of cycle time, eliminating need for dedicated ADC drivers in many configurations.

It supports pseudo-differential input spanning 0 V to VREF (2.4 V–5.1 V), input span compression for single-supply amplifier interfacing, and integrated overvoltage clamps sinking up to 50 mA. The SPI/QSPI/MICROWIRE/DSP-compatible interface operates with 1.8 V–5.5 V logic via separate VIO, enabling direct connection to diverse host processors without level-shifting.

Key Specifications

Pinout & Package

AD4002BCPZ-RL7 is housed in a 10-lead 3 mm × 3 mm LFCSP package with exposed pad (CP-10-9). The exposed pad must be connected to GND per layout guidelines but is not required for electrical specification compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD4003BCPZ-RL7 and AD7606C-18BSTZ, the AD4002BCPZ-RL7 uniquely balances 2 MSPS speed, 14 mW power, and 3 mm × 3 mm footprint-making it optimal for single-channel, space-constrained, high-speed precision applications where latency and size are critical.

Availability

AD4002BCPZ-RL7 is available at Aetrix Electronics and suitable for automated test equipment, medical imaging front-ends, and industrial process monitoring requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for AD4002BCPZ-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 Norwood, MA.

The AD4002BCPZ-RL7 belongs to the AD400x Easy Drive SAR ADC family, engineered specifically for high-accuracy, low-power, space-constrained data acquisition systems where driver complexity, power, and board area must be minimized.

FAQ

What is the maximum achievable throughput for AD4002BCPZ-RL7, and what conditions are required?

The AD4002BCPZ-RL7 achieves its rated 2 MSPS maximum throughput only when turbo mode is enabled and the SCK clock frequency is ≥75 MHz (VIO ≥ 2.7 V) or ≥80 MHz (VIO < 2.7 V). At lower SCK rates or in standard CS mode, throughput drops to 1.75 MSPS or less. This is explicitly defined in Table 4 of the datasheet and verified in timing diagrams Figure 52 and Figure 54.

Does AD4002BCPZ-RL7 require an external driver amplifier for signal conditioning?

No-AD4002BCPZ-RL7's Easy Drive architecture reduces input current to ≤1 μA at 2 MSPS and extends acquisition time to ≥79% of the conversion cycle, enabling direct interface with low-output-impedance amplifiers such as the ADA4897-1 or AD8021 without a dedicated buffer stage. This is confirmed in the General Description and Figure 2 of the datasheet.

What reference voltage range is supported by AD4002BCPZ-RL7, and how does it affect performance?

AD4002BCPZ-RL7 accepts an external reference voltage (VREF) from 2.4 V to 5.1 V. Performance scales accordingly: SNR is 95 dB at 5 V and 89 dB at 2.5 V; INL remains ±3.2 LSB across the full range. Reference current draw is 0.75 mA at 2 MSPS with 5 V VREF, as specified in Table 1 under REF Current.

How does the input overvoltage clamp function in AD4002BCPZ-RL7, and what protection does it provide?

The AD4002BCPZ-RL7 input overvoltage clamp activates when IN+ or IN− exceeds VREF by ~0.25 V (e.g., 5.25 V threshold at 5 V VREF) and sinks up to 50 mA continuously. It protects the internal sampling capacitors and minimizes disturbance on the REF pin, eliminating need for external Schottky diodes. Deactivation time is 360 ns, per Table 1.

Is AD4002BCPZ-RL7 pin-compatible with other devices in the AD400x family?

Yes-AD4002BCPZ-RL7 is pin-compatible with AD4003/AD4007/AD4011 in both 10-lead MSOP (RM-10) and 10-lead LFCSP (CP-10-9) packages, as stated in the Features section and confirmed in Pin Configurations (Figures 3 and 4). This enables drop-in replacement within the same package footprint for throughput or power trade-offs.