Overview
The AD7690BCPZ-RL, produced by Analog Devices Inc., is an 18-bit, successive approximation analog-to-digital converter (ADC) designed for high precision and low power consumption. This ADC operates from a single power supply, ranging from 4.75 V to 5.25 V, and is capable of converting 400,000 samples per second (400 kSPS). It features an on-chip track-and-hold circuit and does not exhibit pipeline delay or latency, making it ideal for multiple multiplexed channel applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 18 bits | |||
| Sampling Rate | 400 kSPS | |||
| Power Supply | 4.75 | 5 | 5.25 | V |
| Power Consumption | 17 mW | @ 400 kSPS, VDD = 5 V | ||
| Acquisition Time | 400 | ns | ||
| Conversion Time | 0.5 | 2.1 | µs | |
| Temperature Range | -40 | 85 | °C | |
| Package | 10-lead MSOP or 10-lead LFCSP | |||
Key Features
- Successive approximation architecture with charge redistribution DAC.
- On-chip track-and-hold circuit with no pipeline delay or latency.
- Single power supply operation from 4.75 V to 5.25 V.
- Low power consumption: 17 mW at 400 kSPS and 50 µW at 1 kSPS.
- Compatible with 1.8 V to 5 V digital logic families.
- Pin-for-pin compatible with AD7691, AD7982, AD7687, AD7688, and AD7693.
Applications
- Battery-powered equipment due to its low power consumption.
- Medical instruments such as ECG/EKG devices.
- Mobile communications, including GPS systems.
- Personal digital assistants and other portable devices.
- Data acquisition and instrumentation systems.
- Process control and industrial automation.
Q & A
- What is the resolution of the AD7690 ADC?
The AD7690 is an 18-bit analog-to-digital converter.
- What is the maximum sampling rate of the AD7690?
The AD7690 can sample up to 400,000 samples per second (400 kSPS).
- What is the power supply range for the AD7690?
The AD7690 operates from a single power supply ranging from 4.75 V to 5.25 V.
- How much power does the AD7690 consume at 400 kSPS?
The AD7690 consumes approximately 17 mW at 400 kSPS.
- Does the AD7690 have any on-chip components?
Yes, the AD7690 includes an on-chip track-and-hold circuit.
- Is the AD7690 compatible with different digital logic families?
Yes, it is compatible with 1.8 V to 5 V digital logic families.
- What are the typical applications of the AD7690?
The AD7690 is used in battery-powered equipment, medical instruments, mobile communications, and data acquisition systems.
- What is the temperature range for the AD7690?
The specified temperature range is from -40°C to 85°C.
- What packages are available for the AD7690?
The AD7690 is available in 10-lead MSOP and 10-lead LFCSP packages.
- Is the AD7690 pin-for-pin compatible with other ADCs?
Yes, it is pin-for-pin compatible with AD7691, AD7982, AD7687, AD7688, and AD7693.
