Overview
The AD7699BCPZ is a high-performance, 16-bit, 8-channel analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the PulSAR (Pulse Width Modulation Successive Approximation Register) family and is designed for use in multichannel, low-power data acquisition systems. The AD7699 operates from a single power supply, VDD, and features a true 16-bit SAR ADC with no missing codes, ensuring high accuracy and reliability.
The ADC includes an 8-channel low crosstalk multiplexer, allowing for various input configurations such as single-ended, differential, or bipolar. It also integrates an internal 4.096 V low drift reference and buffer, a temperature sensor, a selectable one-pole filter, and a channel sequencer for continuous scanning of channels.
The device uses a simple serial port interface (SPI) for configuration and data transfer, compatible with various logic levels (1.8 V to 5 V). It is available in a 20-lead LFCSP package and operates over a temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 bits | |
| Number of Channels | 8 | |
| Sampling Rate | Up to 500 kSPS | |
| Analog Input Range | 0 V to VREF (up to VDD) | V |
| Reference Voltage | Internal: 4.096 V, External: up to 4.096 V or VDD | V |
| Power Supply | Single supply, VDD (1.8 V to 5 V) | V |
| Power Dissipation | 26 mW at 500 kSPS, 5.2 μW at 100 SPS | mW/μW |
| Standby Current | 50 nA | nA |
| Operating Temperature | −40°C to +85°C | °C |
| Package Type | 20-lead LFCSP (4mm x 4mm w/ EP) |
Key Features
- True 16-bit SAR ADC with no missing codes for high accuracy and reliability.
- 8-channel low crosstalk multiplexer for flexible input configurations (single-ended, differential, or bipolar).
- Internal 4.096 V low drift reference and buffer for stable and accurate conversions.
- Temperature sensor for monitoring environmental conditions.
- Selectable one-pole filter for noise reduction.
- Channel sequencer for continuous scanning of channels.
- SPI-compatible serial interface for easy configuration and data transfer.
- Low power consumption with power dissipation scaling with throughput.
- Compact package options including 20-lead LFCSP and 20-ball WLCSP.
Applications
- Battery-powered equipment: Ideal for power-sensitive applications.
- Medical instruments: Suitable for ECG/EKG and other medical devices requiring high precision.
- Mobile communications: Used in GPS and other mobile communication systems.
- Personal digital assistants: Enhances data acquisition in handheld devices.
- Power line monitoring: Monitors power line conditions with high accuracy.
- Seismic data acquisition systems: Used in seismic exploration and monitoring.
- Instrumentation and process control: Suitable for various industrial measurement and control applications.
Q & A
- What is the resolution of the AD7699 ADC?
The AD7699 has a resolution of 16 bits.
- How many channels does the AD7699 support?
The AD7699 supports 8 channels.
- What is the maximum sampling rate of the AD7699?
The maximum sampling rate is up to 500 kSPS.
- What are the available package types for the AD7699?
The AD7699 is available in 20-lead LFCSP and 20-ball WLCSP packages.
- What is the operating temperature range of the AD7699?
The operating temperature range is −40°C to +85°C.
- Does the AD7699 have an internal reference voltage?
Yes, the AD7699 has an internal 4.096 V low drift reference and buffer.
- What interface does the AD7699 use for configuration and data transfer?
The AD7699 uses an SPI-compatible serial interface.
- How does the power dissipation of the AD7699 scale?
The power dissipation scales with throughput.
- What are some typical applications of the AD7699?
Typical applications include battery-powered equipment, medical instruments, mobile communications, and seismic data acquisition systems.
- Does the AD7699 have a temperature sensor?
Yes, the AD7699 includes an internal temperature sensor.
