Overview
The AD7868ANZ, produced by Analog Devices Inc., is a complete 12-bit analog input/output (I/O) system. This integrated circuit includes a 12-bit analog-to-digital converter (ADC) with a track-and-hold amplifier and a 12-bit digital-to-analog converter (DAC) with an output buffer amplifier. The device also features on-chip voltage references for both the ADC and DAC, ensuring high precision and stability. It operates from ±5 V power supplies and has a small footprint, available in 24-pin plastic or hermetic dual-in-line package (DIP) and 28-pin plastic small outline IC (SOIC) packages.
Key Specifications
| Parameter | Value | Units | Conditions |
|---|---|---|---|
| ADC Resolution | 12 bits | - | - |
| ADC Throughput Rate | 83 kHz | - | - |
| Signal-to-Noise Ratio (SNR) | 72 dB | - | - |
| DAC Settling Time | 3 µs | - | 12 bits |
| Supply Voltage | ±5 V | - | - |
| Analog Input/Output Range | ±3 V | - | - |
| Power Consumption | 130 mW (typ) | - | - |
| Package Types | 24-pin DIP, 28-pin SOIC | - | - |
Key Features
- Complete 12-Bit I/O System: Includes a 12-bit ADC with a track-and-hold amplifier and a 12-bit DAC with an output buffer amplifier.
- On-Chip Voltage References: Provides precision references for both the ADC and DAC.
- Dynamic Specifications: Specified for ac parameters including signal-to-noise ratio and harmonic distortion.
- Low Power Consumption: Operates at 130 mW typical power consumption.
- Small Footprint: Available in 24-pin DIP and 28-pin SOIC packages.
- Serial Interface: Minimizes pin count and allows serial interfacing to most DSP machines.
- Internal Clock Oscillator: Can be used for ADC conversion, with the option to use an external TTL-compatible clock.
Applications
- Digital Signal Processing (DSP): Suitable for high-speed data conversion and dynamic parameter specifications.
- Speech Recognition and Synthesis: High precision and stability make it ideal for speech processing applications.
- Spectrum Analysis: Used in applications requiring high SNR and low harmonic distortion.
- High Speed Modems: Supports high-speed data conversion necessary for modem applications.
- DSP Servo Control: Applicable in servo control systems requiring precise analog I/O operations.
Q & A
- What is the resolution of the ADC in the AD7868ANZ?
The ADC in the AD7868ANZ has a resolution of 12 bits.
- What is the throughput rate of the ADC?
The ADC has a throughput rate of 83 kHz.
- What is the signal-to-noise ratio (SNR) of the AD7868ANZ?
The SNR is 72 dB.
- What is the settling time of the DAC?
The DAC has a settling time of 3 µs to 12 bits.
- What are the supply voltage requirements for the AD7868ANZ?
The device operates from ±5 V power supplies.
- What is the analog input/output range of the AD7868ANZ?
The analog input/output range is ±3 V.
- What types of packages are available for the AD7868ANZ?
It is available in 24-pin DIP and 28-pin SOIC packages.
- Does the AD7868ANZ have an internal clock oscillator?
Yes, it has an internal clock oscillator that can be used for ADC conversion, or an external TTL-compatible clock can be applied.
- What are some typical applications of the AD7868ANZ?
Typical applications include digital signal processing, speech recognition and synthesis, spectrum analysis, high-speed modems, and DSP servo control.
- How does the AD7868ANZ interface with other devices?
The device interfaces through a serial interface, minimizing pin count and allowing serial interfacing to most DSP machines.
