Overview
The AD7690BCPZ-R2 is a high-performance, 18-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This single-supply ADC is designed for precision and low power consumption, making it ideal for a variety of applications, including battery-powered devices. The AD7690 uses a successive approximation architecture and features a built-in track-and-hold circuit, eliminating pipeline delay or latency. It is available in a compact 10-lead MSOP or LFCSP package, offering space savings and flexible configurations.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Conversion Time | tCONV | 0.5 | 2.1 | µs | |
| Acquisition Time | tACQ | 400 | ns | ||
| Time Between Conversions | tCYC | 2.5 | µs | ||
| CNV Pulse Width (CS Mode) | tCNVH | 10 | ns | ||
| SCK Period (CS Mode) | tSCK | 15 | ns | ||
| SCK Period (Chain Mode) VIO Above 4.5 V | tSCK | 17 | ns | ||
| Supply Voltage | VDD | 4.75 | 5.25 | V | |
| Power Consumption at 400 kSPS | 17-20 | mW | |||
| Energy per Conversion at 400 kSPS | 50 | nJ/sample | |||
| Temperature Range | -40 | 85 | °C |
Key Features
- High Resolution: 18-bit successive approximation ADC for high precision measurements.
- Low Power Consumption: Consumes 17-20 mW at 400 kSPS and as low as 50 µW at 1 kSPS, ideal for battery-powered applications.
- Fast Conversion Rate: Capable of converting 400,000 samples per second.
- No Pipeline Delay: Built-in track-and-hold circuit eliminates pipeline delay or latency.
- Flexible Interface: Compatible with 1.8 V to 5 V digital logic families.
- Compact Packaging: Available in 10-lead MSOP and LFCSP packages for space savings and flexible configurations.
- Pin Compatibility: Pin-for-pin compatible with other ADC models like AD7691, AD7982, AD7687, AD7688, and AD7693.
Applications
- Battery-Powered Devices: Ideal for applications where low power consumption is critical.
- Multiplexed Channel Systems: Suitable for multiple channel applications due to its fast conversion rate and no pipeline delay.
- Industrial Automation: Used in various industrial automation and control systems requiring high precision and reliability.
- Medical Devices: Applicable in medical devices that require accurate and low-power ADC solutions.
- Aerospace and Defense: Can be used in aerospace and defense applications where high precision and reliability are essential.
Q & A
- What is the resolution of the AD7690BCPZ-R2 ADC?
The AD7690BCPZ-R2 is an 18-bit analog-to-digital converter.
- What is the maximum conversion rate of the AD7690BCPZ-R2?
The AD7690BCPZ-R2 can convert up to 400,000 samples per second (400 kSPS).
- What is the typical power consumption of the AD7690BCPZ-R2 at 400 kSPS?
The typical power consumption is between 17-20 mW at 400 kSPS.
- Does the AD7690BCPZ-R2 have pipeline delay or latency?
No, the AD7690BCPZ-R2 does not exhibit pipeline delay or latency due to its built-in track-and-hold circuit.
- What are the compatible digital logic families for the AD7690BCPZ-R2?
The AD7690BCPZ-R2 is compatible with 1.8 V to 5 V digital logic families.
- In what packages is the AD7690BCPZ-R2 available?
The AD7690BCPZ-R2 is available in 10-lead MSOP and LFCSP packages.
- Is the AD7690BCPZ-R2 pin-compatible with other ADC models?
Yes, it is pin-for-pin compatible with models like AD7691, AD7982, AD7687, AD7688, and AD7693.
- What is the operating temperature range of the AD7690BCPZ-R2?
The specified performance temperature range is from -40°C to 85°C.
- How does the AD7690BCPZ-R2 manage power consumption during idle periods?
The AD7690BCPZ-R2 powers down between conversions, significantly reducing power consumption during idle periods.
- What are some typical applications of the AD7690BCPZ-R2?
Typical applications include battery-powered devices, multiplexed channel systems, industrial automation, medical devices, and aerospace and defense systems.
