Analog Devices Inc. AD4052 Compact Low Power Easy Drive SAR ADCs
Analog Devices AD4052 Compact Low Power Easy Drive Successive Approximation Register (SAR) Analog-to-Digital Converters (ADCs) are versatile, 16-bit devices that enable low-power, high-density data acquisition solutions without sacrificing precision. These ADCs offer a unique balance of performance and power efficiency, plus innovative features for seamlessly switching between high-resolution and low-power modes tailored to the system's immediate needs. 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 (3.4pF) maximize input impedance, reducing the dependence on high-bandwidth, power-hungry amplifiers typically required by SAR ADCs. The wide input common-mode range grants inherent support for differential and single-ended signals.
The Analog Devices AD4052 supports microcontrollers with power-down modes and interrupt-driven firmware. Autonomous modes enable out-of-range event detection while the digital host sleeps. Averaging modes deliver on-demand, high-resolution measurements while offloading computations from the host processor. The self-timed device enables signal (DEV_EN) to synchronize 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 (VREF) 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 Analog Devices AD4052 is available in compact LFCSP and WLCSP packages with operation across a wide temperature range.
Features
- Small footprint, big performance
- INL: ±0.5LSB maximum
- NR: 86.1dB with VREF = 3.3V
- 1.35mW at 1MSPS in sample mode
- 370μW at 1MSPS in autonomous modes
- 4.1μW 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 1.8V to 3.3V logic
- 2.0mm x 2.0mm LFCSP and 1.7mm x 2.0mm WLCSP package options
- Wide -40°C to +125°C operating temperature range
Applications
- Battery-powered data acquisition
- Vital signs monitoring
- Biological and chemical analysis
- Geologic and seismic sensing
- Motion and robotics
Functional Block Diagram
Related Development Tool
Analog Devices Inc. EVAL-AD4052-ARDZ Evaluation Board for AD4052
The board enables quick and easy evaluation of the performance and features of the AD4052.