Analog DevicesAD4052BCPZ-RL7ADC

AD4052: Compact, Low Power, 16-Bit, 2 MSPS Easy Drive SAR ADC

The AD4052 is a versatile, 16-bit, successive approximation register (SAR) analog-to-digital converter (ADC) that enables low-power, high-density data acquisition solutions without sacrificing precision.

The AD4052 ADC offers a unique balance of performance and power efficiency, plus innovative features for seamlessly switching between high-resolution and low-power modes tailored to the immediate needs of the system. The AD4052 is ideal for battery-powered, compact data acquisition and edge sensing applications.

The Easy Drive features enable highly efficient analog front-end (AFE) designs. The small sampling capacitors (3.4 pF) maximize input impedance, thus reducing the dependence on high-bandwidth, power-hungry amplifiers typically required by SAR ADCs. The wide input common-mode range grants inherent support for both differential and single-ended signals.

The AD4052 supports microcontrollers with power-down modes and interrupt-driven firmware. The autonomous modes enable out-of-range event detection while the digital host sleeps. The averaging modes deliver on-demand, high-resolution measurements while offloading computations from the host processor. The self-timed device enable signal (DEV_EN) synchronizes AFE device power cycling to the ADC sampling instant, optimizing system power consumption while minimizing power-up settling error artifacts. The AD4052 also supports power cycling the voltage reference and using the supply as the ADC reference voltage (V_REF) for additional power savings.

Device configuration and ADC data readback are supported via a robust, 4-wire serial peripheral interface (SPI) with cyclic redundancy check (CRC) supported for all data transfers. The AD4052 is available in compact LFCSP and WLCSP packages and operates across a wide temperature range, making it ideal for a diverse set of applications.

Key Features and Benefits

• •  Small footprint, big performance
• •  INL: ±0.5 LSB maximum
• •  SNR: 86.1 dB with V_REF = 3.3 V
• •  1.35 mW at 1 MSPS in Sample Mode
• •  370 μW at 1 MSPS in Autonomous Modes
• •  4.1 μW standby power
• •  Versatile signal conditioning integration
• •  Easy Drive features enable small, low-power analog front end designs
• •  Compatible with differential and single-ended signal chains
• •  Wide common-mode input range
• •  Minimizes digital host activity and power dissipation
• •  Autonomous sampling with window comparator and interrupt generation
• •  Averaging filter with continuous and burst sampling options
• •  Power cycling synchronization for companion devices
• •  4-wire SPI compatible with 1.8 V to 3.3 V logic
• •  2.0 mm × 2.6 mm LFCSP and 1.7 mm × 2.0 mm WLCSP
• •  Wide operating temperature range: −40°C to +125°C

Applications

• •  Battery-powered data acquisition
• •  Vital signs monitoring
• •  Biological and chemical analysis
• •  Geologic and seismic sensing
• •  Motion and robotics

Evaluation Board

The AD4052 can be evaluated with the EVAL-AD4052-ARDZ.

Block Diagrams and Tables