Overview
The AD4695BCPZ, produced by Analog Devices Inc., is a 16-bit, 16-channel, 500 kSPS multiplexed successive approximation register (SAR) analog-to-digital converter (ADC). This component is designed for high accuracy, low power, and compact form factor, making it ideal for space-constrained, multichannel precision data acquisition systems and monitoring circuits. The AD4695 features a true 16-bit SAR ADC core with no missing codes, a 16-channel low crosstalk multiplexer, and extensive digital functionality including overvoltage protection, on-chip oversampling and decimation, and threshold detection.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 bits | |||
| Number of Channels | 16 | |||
| Sample Rate | 500 kSPS | |||
| Power Supply Voltage (AVDD to AGND) | 2.7 | 5.5 | V | |
| Power Supply Voltage (LDO_IN to AGND) | 2.4 | 5.5 | V | |
| Power Supply Voltage (VDD to AGND) | 1.71 | 1.89 | V | |
| Power Supply Voltage (VIO to IOGND) | 1.14 | 1.98 | V | |
| Standby Current (AVDD) | 160 nA | 460 µA | ||
| Conversion Mode Current (AVDD) | 680 nA | |||
| Operating Temperature | -40°C | +125°C | ||
| Package Type | 32-Lead LFCSP (5mm x 5mm w/ EP) | |||
Key Features
- Easy Drive Features: Relax the drive requirements of the analog front end (AFE) and reference circuitry, reducing the need for dedicated high-speed ADC drivers and reference buffers.
- Overvoltage Protection: Input overvoltage protection clamps on each analog input protect the ADC from overvoltage events.
- On-Chip Reference Buffer: Available in the WLCSP option, providing a true, buffered reference input.
- Advanced Digital Functionality: Compatible with low power digital hosts, featuring low SPI clock rate requirements, on-chip customizable channel sequencers, and oversampling and decimation.
- Autocycle Mode and Threshold Detection: Enable low power, interrupt-driven firmware design by performing conversions autonomously and generating alerts based on channel-specific threshold limits.
- High Performance: Sample rate of 500 kSPS, INL of ±1.0 LSB maximum, and long acquisition phase.
Applications
The AD4695BCPZ is optimal for use in space-constrained, multichannel precision data acquisition systems and monitoring circuits. It is particularly suited for applications requiring high accuracy and low power consumption, such as industrial automation, medical devices, and automotive systems.
Q & A
- What is the resolution of the AD4695BCPZ?
The AD4695BCPZ has a resolution of 16 bits. - How many channels does the AD4695BCPZ support?
The AD4695BCPZ supports 16 channels. - What is the sample rate of the AD4695BCPZ?
The sample rate of the AD4695BCPZ is 500 kSPS. - What are the power supply voltage ranges for the AD4695BCPZ?
The power supply voltage ranges are 2.7V to 5.5V for AVDD to AGND, 2.4V to 5.5V for LDO_IN to AGND, 1.71V to 1.89V for VDD to AGND, and 1.14V to 1.98V for VIO to IOGND. - Does the AD4695BCPZ have overvoltage protection?
Yes, the AD4695BCPZ has input overvoltage protection clamps on each analog input. - What is the operating temperature range of the AD4695BCPZ?
The operating temperature range is -40°C to +125°C. - What package types are available for the AD4695BCPZ?
The AD4695BCPZ is available in a 32-Lead LFCSP (5mm x 5mm w/ EP) and a 36-ball WLCSP. - Does the AD4695BCPZ support autocycle mode and threshold detection?
Yes, the AD4695BCPZ supports autocycle mode and threshold detection features. - What are the key benefits of the Easy Drive features in the AD4695BCPZ?
The Easy Drive features simplify system designs, reduce component count, and increase channel density by removing the need for dedicated high-speed ADC drivers and reference buffers. - Is the AD4695BCPZ suitable for low power digital hosts?
Yes, the AD4695BCPZ is compatible with low power digital hosts due to its low SPI clock rate requirements and advanced digital functionality.
