Analog Devices Inc. AD7982BCPZ-RL7

Overview

AD7982BCPZ-RL7 from Analog Devices is an 18-bit, 1 MSPS successive approximation register (SAR) analog-to-digital converter with true differential input range of ±VREF, 99 dB dynamic range at VREF = 5 V, and zero-latency architecture for real-time acquisition in precision data acquisition systems.

For engineers reviewing the AD7982BCPZ-RL7 datasheet, AD7982BCPZ-RL7 pinout, AD7982BCPZ-RL7 application, or AD7982BCPZ-RL7 equivalent, this page delivers verified specifications, validated LFCSP-10 pin mapping, confirmed SPI/QSPI/MICROWIRE compatibility, daisy-chain capability, and exact thermal performance (θJC = 2.96°C/W) for high-density PCB design and signal integrity validation.

Technical Context

The AD7982BCPZ-RL7 implements a single-supply SAR architecture with external reference input (2.4 V to 5.1 V), sampling on the rising edge of CNV, and fully differential analog inputs (IN+, IN−) operating over −40°C to +85°C. Its zero-latency conversion ensures no pipeline delay between sample and output.

It features a proprietary serial interface supporting both CS mode (3-/4-wire) and chain mode, with optional busy indicator and 1.71 V to 5.5 V logic-level flexibility via dedicated VIO supply-enabling direct interfacing with 1.8 V, 2.5 V, 3 V, or 5 V host controllers without level shifters.

Key Specifications

Pinout & Package

AD7982BCPZ-RL7 is packaged in a 3 mm × 3 mm, 10-lead lead frame chip scale package (LFCSP), with exposed pad requiring connection to GND for optimal thermal performance (θJC = 2.96°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7982BCPZ-RL7, AD7989-5BCPZ-RL7 trades speed for lower power and smaller thermal footprint, while AD4003BRMZ-RL7 sacrifices differential input fidelity and linearity for integration simplicity-making AD7982BCPZ-RL7 the only option meeting 1 MSPS, true differential, and ±2 LSB INL simultaneously in LFCSP-10.

Availability

AD7982BCPZ-RL7 is available at Aetrix Electronics and suitable for automated test equipment, medical instruments, and machine automation requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production programs.

Supply support for AD7982BCPZ-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, with R&D and manufacturing infrastructure spanning North America, Europe, and Asia.

The AD7982BCPZ-RL7 belongs to Analog Devices' precision SAR ADC product line, engineered for high-resolution, low-latency data acquisition in demanding industrial, medical, and test & measurement applications where accuracy, speed, and noise immunity are critical.

FAQ

What is the maximum sampling rate of the AD7982BCPZ-RL7?

The AD7982BCPZ-RL7 achieves a maximum throughput of 1 MSPS when VIO exceeds 2.3 V. At VIO ≤ 2.3 V, the maximum rate drops to 800 kSPS due to digital interface timing constraints. This specification is confirmed in Table 4 and Table 5 of the Rev. E datasheet under Timing Specifications.

Does the AD7982BCPZ-RL7 require an external reference voltage?

Yes, the AD7982BCPZ-RL7 requires an external reference voltage applied to the REF pin, with a valid range of 2.4 V to 5.1 V. The device does not include an internal reference; accuracy and dynamic performance directly depend on the stability and noise of the external reference source.

Can the AD7982BCPZ-RL7 operate with a 1.8 V digital interface?

Yes, the AD7982BCPZ-RL7 supports 1.8 V digital logic through its dedicated VIO supply pin, which accepts 1.71 V to 5.5 V. When VIO = 1.8 V, the digital input thresholds adjust accordingly (VIH ≥ 0.9 × VIO), enabling direct connection to low-voltage FPGAs and microcontrollers without level shifters.

What package type is used for the AD7982BCPZ-RL7?

The AD7982BCPZ-RL7 uses a 3 mm × 3 mm, 10-lead lead frame chip scale package (LFCSP) with exposed pad. Per Figure 4 and Table 7 of the datasheet, the exposed pad must be connected to GND for optimal thermal performance (θJC = 2.96°C/W) and EMI suppression.

Is the AD7982BCPZ-RL7 pin-compatible with other SAR ADCs in the same family?

Yes, the AD7982BCPZ-RL7 shares identical pinout and footprint with AD7989-1BCPZ-RL7, AD7989-5BCPZ-RL7, and AD7984BCPZ-RL7 in LFCSP-10 packaging, as confirmed in Table 1 and Pin Configurations section of the datasheet-enabling layout reuse across performance tiers within the same design platform.