Overview
The AD679KD is a 14-bit, 128 kSPS complete sampling analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD679 family and is known for its high integration and performance. It combines a high-speed sample-and-hold amplifier (SHA), an ADC, a 5 V reference, a clock, and a digital interface on a single chip, minimizing the need for external components. The AD679KD is fabricated using Analog Devices’ BiMOS process, which combines low power CMOS logic with high precision, low noise bipolar circuits. This makes it suitable for a variety of signal processing and measurement applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rate | 128 kSPS |
| Full Power Bandwidth | 1 MHz |
| Full Linear Bandwidth | 500 kHz |
| Signal-to-Noise Ratio (S/N+D) | 78 dB (K, B, T Grades) |
| Input Range | 10 V (Unipolar or Bipolar) |
| Input Impedance | 10 MΩ |
| Supply Voltage | +5 V and ±12 V |
| Power Dissipation | 560 mW (typ) |
| Package | 28-Pin Ceramic DIP |
| Operating Temperature | 0°C to +70°C |
Key Features
- Complete integration of SHA, ADC, reference, clock, and digital interface on a single chip.
- AC and DC characterized and specified (K, B, T Grades).
- Twos complement data format in bipolar mode and straight binary data format in unipolar mode.
- On-board reference and clock.
- Microprocessor-compatible bus interface.
- Pin compatible with AD678 12-bit, 200 kSPS ADC.
- MIL-STD-883 compliant versions available.
- High input impedance allows direct connection to unbuffered sources without signal degradation.
Applications
The AD679KD is suitable for various applications requiring high-speed and high-resolution analog-to-digital conversion. These include:
- Signal processing systems.
- Measurement and data acquisition systems.
- Military and aerospace applications due to its MIL-STD-883 compliance.
- Industrial and instrumentation applications where high accuracy and reliability are crucial.
Q & A
- What is the resolution of the AD679KD?
The AD679KD has a resolution of 14 bits. - What is the sampling rate of the AD679KD?
The sampling rate is 128 kSPS. - What is the full power bandwidth of the AD679KD?
The full power bandwidth is 1 MHz. - What is the input range of the AD679KD?
The input range is 10 V, available in both unipolar and bipolar modes. - What is the input impedance of the AD679KD?
The input impedance is 10 MΩ. - What are the supply voltages for the AD679KD?
The supply voltages are +5 V and ±12 V. - How much power does the AD679KD dissipate?
The power dissipation is typically 560 mW. - In what package is the AD679KD available?
The AD679KD is available in a 28-Pin Ceramic DIP package. - What is the operating temperature range of the AD679KD?
The operating temperature range is 0°C to +70°C. - Is the AD679KD compliant with any military standards?
Yes, the AD679KD has MIL-STD-883 compliant versions available.
