Overview
The AD677KR is a 16-bit, 100 kSPS sampling analog-to-digital converter (ADC) produced by Analog Devices Inc. This multipurpose ADC utilizes a switched-capacitor/charge redistribution architecture, ensuring high performance in both DC and AC parameters. The device is optimized through on-chip autocalibration, which eliminates the need for user adjustments or additional external circuitry. It operates from +5 V and ±12 V supplies, consuming typically 450 mW with a 10 V reference and 360 mW with a 5 V reference during conversion.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Sampling Rate | 100 kSPS |
| Input Range | ±5 V to ±10 V (±VREF) |
| Supply Voltage | +5 V and ±12 V |
| Power Consumption | Typically 450 mW (10 V reference), 360 mW (5 V reference) |
| THD (Total Harmonic Distortion) | -99 dB |
| S/(N+D) Ratio | 92 dB peak spurious -101 dB |
| INL (Integral Nonlinearity) | 1.0 LSB |
| Full Scale and Offset Error | ±1 LSB |
| Package Types | 16-pin narrow plastic DIP, 28-lead SOIC |
Key Features
- Autocalibration for excellent DC performance without user adjustments or external circuitry.
- Wide input range of ±5 V to ±10 V (±VREF).
- Easy serial interface compatible with standard ADI DSPs.
- TTL compatible inputs and outputs.
- Excellent AC performance: -99 dB THD, 92 dB S/(N+D) peak spurious -101 dB.
- Industry-leading DC performance: 1.0 LSB INL, ±1 LSB full scale and offset.
- Separate analog and digital grounds to reduce digital crosstalk.
- Analog ground sense for remote sensing of the signal source ground potential.
Applications
The AD677KR is suitable for various signal processing and measurement applications due to its high DC and AC performance. It is particularly useful in:
- Signal processing systems requiring high accuracy and low distortion.
- Measurement applications where precise DC parameters are crucial.
- Industrial control systems that need reliable and accurate analog-to-digital conversion.
- Medical devices and diagnostic equipment requiring high-resolution ADCs.
Q & A
- What is the resolution of the AD677KR ADC?
The AD677KR has a resolution of 16 bits.
- What is the sampling rate of the AD677KR?
The AD677KR has a sampling rate of 100 kSPS.
- What are the input voltage ranges for the AD677KR?
The input voltage ranges are ±5 V to ±10 V (±VREF).
- How much power does the AD677KR typically consume?
Typically 450 mW with a 10 V reference and 360 mW with a 5 V reference during conversion.
- What are the package types available for the AD677KR?
The AD677KR is available in 16-pin narrow plastic DIP and 28-lead SOIC packages.
- Does the AD677KR require external calibration?
No, the AD677KR features on-chip autocalibration, eliminating the need for user adjustments or additional external circuitry.
- What is the THD (Total Harmonic Distortion) of the AD677KR?
The THD of the AD677KR is -99 dB.
- What is the S/(N+D) Ratio of the AD677KR?
The S/(N+D) Ratio is 92 dB peak spurious -101 dB.
- What are the typical applications of the AD677KR?
The AD677KR is suitable for signal processing systems, measurement applications, industrial control systems, and medical devices.
- Does the AD677KR have separate analog and digital grounds?
