Overview
The AD679KN is a 14-bit monolithic analog-to-digital converter (ADC) produced by Analog Devices Inc. This component integrates a high-speed sample-and-hold amplifier (SHA), a microprocessor-compatible bus interface, a voltage reference, and clock generation circuitry on a single chip. It is designed to minimize external component requirements, providing a fully specified sampling A/D function that is not achievable with discrete designs. The AD679KN operates from +5 V and ±12 V supplies and is available in various packages, including 28-lead plastic DIP, ceramic DIP, and 44 J-leaded ceramic surface-mount packages.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 bits | |
| Conversion Rate | 128 kSPS | |
| Full Power Bandwidth | 1 MHz | |
| Full Linear Bandwidth | 500 kHz | |
| S/N+D Ratio | 78 dB | |
| Data Format | Straight Binary (Unipolar), Twos Complement (Bipolar) | |
| Input Impedance | 10 MΩ | |
| Input Range | 10 V (Unipolar or Bipolar) | |
| Supply Voltage | +5 V, ±12 V | |
| Power Dissipation | 560 mW (typ) | |
| Operating Temperature | 0°C to +70°C | |
| Package Type | 28-lead Plastic DIP, Ceramic DIP, 44 J-leaded Ceramic Surface-Mount |
Key Features
- Complete integration of SHA, ADC, voltage reference, and clock generation on a single chip.
- High-speed conversion rate of 128 kSPS.
- Full power bandwidth of 1 MHz and full linear bandwidth of 500 kHz.
- High S/N+D ratio of 78 dB.
- Supports both unipolar and bipolar input modes with straight binary and twos complement data formats.
- High input impedance of 10 MΩ, allowing direct connection to unbuffered sources.
- Microprocessor-compatible bus interface with 8-bit bus.
- MIL-STD-883 compliant versions available.
Applications
- Signal processing applications requiring high speed and accuracy.
- Measurement applications where both AC and DC parameters are critical.
- Military and aerospace applications due to MIL-STD-883 compliance.
- Industrial and instrumentation applications requiring robust and reliable ADCs).
Q & A
- What is the resolution of the AD679KN ADC?
The AD679KN has a resolution of 14 bits).
- What is the conversion rate of the AD679KN?
The AD679KN has a conversion rate of 128 kSPS).
- What is the full power bandwidth of the AD679KN?
The full power bandwidth of the AD679KN is 1 MHz).
- What are the supported data formats for the AD679KN?
The AD679KN supports straight binary for unipolar mode and twos complement binary for bipolar mode).
- What is the input impedance of the AD679KN?
The input impedance of the AD679KN is 10 MΩ).
- What are the supply voltages for the AD679KN?
The AD679KN operates from +5 V and ±12 V supplies).
- Is the AD679KN compliant with military standards?
Yes, the AD679KN has versions that comply with MIL-STD-883).
- What are the available package types for the AD679KN?
The AD679KN is available in 28-lead plastic DIP, ceramic DIP, and 44 J-leaded ceramic surface-mount packages).
- What is the typical power dissipation of the AD679KN?
The typical power dissipation of the AD679KN is 560 mW).
- What is the operating temperature range for the AD679KN?
The operating temperature range for the AD679KN is 0°C to +70°C).
