Overview
The AD676KNZ is a 16-bit parallel output analog-to-digital converter (ADC) produced by Analog Devices Inc. This multipurpose ADC utilizes a switched-capacitor/charge redistribution architecture to achieve a conversion rate of 100 kSPS, with a total conversion time of 10 µs. The device is optimized for high performance through on-chip autocalibration, which corrects internal nonlinearities and eliminates the need for user adjustments or trims. The AD676KNZ is segmented into two monolithic chips: a digital control chip fabricated on Analog Devices' DSP CMOS process and an analog ADC chip fabricated on the BiMOS II process, both contained in a single package.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Conversion Rate | 100 kSPS |
| Total Conversion Time | 10 µs |
| Supply Voltages | +5 V, ±12 V |
| Power Consumption | Typically 360 mW during conversion |
| Package Type | 28-pin plastic DIP or 28-pin side-brazed ceramic package |
| Temperature Range | 0 to 70°C |
| RoHS Status | Lead free / RoHS Compliant |
Key Features
- Switched-capacitor/charge redistribution architecture for high conversion rate and accuracy.
- On-chip autocalibration to correct internal nonlinearities and capacitor mismatch errors.
- Separate analog and digital grounds to reduce digital crosstalk.
- Analog ground sense provided for the analog input.
- Sample/hold function included without the need for additional external circuitry.
- Microcontroller controls various functions including successive approximation algorithm, autocalibration routine, sample/hold operation, and internal output data latch.
Applications
The AD676KNZ is suitable for a variety of applications, including signal processing and measurement applications. Its high dynamic performance, specified by parameters such as S/(N+D) Ratio, THD, and IMD, makes it ideal for signal processing. Additionally, its dc parameters are well-suited for measurement applications.
Q & A
- What is the resolution of the AD676KNZ ADC?
The AD676KNZ has a resolution of 16 bits. - What is the conversion rate of the AD676KNZ?
The conversion rate is 100 kSPS. - How long does the total conversion time take for the AD676KNZ?
The total conversion time is 10 µs. - What are the supply voltages for the AD676KNZ?
The supply voltages are +5 V and ±12 V. - How much power does the AD676KNZ typically consume during conversion?
The device typically consumes 360 mW during conversion. - In what types of packages is the AD676KNZ available?
The AD676KNZ is available in 28-pin plastic DIP or 28-pin side-brazed ceramic packages. - What is the temperature range for the AD676KNZ?
The temperature range is 0 to 70°C. - Is the AD676KNZ RoHS compliant?
Yes, the AD676KNZ is lead free and RoHS compliant. - What is the purpose of the on-chip autocalibration in the AD676KNZ?
The on-chip autocalibration corrects internal nonlinearities and capacitor mismatch errors, ensuring high performance without the need for user adjustments. - Does the AD676KNZ include a sample/hold function?
Yes, the sample/hold function is included without the need for additional external circuitry.
