Overview
The AD7245JN is a 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the LC2MOS DACPORT series and is known for its high precision and versatility in various analog output configurations. Although the AD7245JN is currently obsolete and no longer manufactured, it remains a significant component in the history of digital-to-analog conversion technology.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Resolution | 12 bits | ||
| Output Voltage Range | 0 V to 10 V (unipolar), ±5 V (bipolar) | V | VDD ≥ +14.25 V for bipolar output |
| Supply Voltage | +12 V to +15 V, -12 V to -15 V | V | |
| Analog Ground | 0 V | V | |
| Digital Ground | 0 V | V | |
| Chip Select Pulsewidth | 80 ns (min), 55 ns (typ) | ns | TMIN to TMAX |
| Write Pulsewidth | 80 ns (min), 40 ns (typ) | ns | TMIN to TMAX |
| Load DAC Pulsewidth | 40 ns (typ) | ns | |
| Package Type | 24-PDIP |
Key Features
- High Resolution: The AD7245JN offers a 12-bit resolution, providing precise analog output.
- Flexible Output Configuration: Supports both unipolar (0 V to 10 V) and bipolar (±5 V) output configurations.
- Low Digital Feedthrough: Features a very low digital feedthrough of 10 nV-s in a 5 V output range, enhancing signal integrity.
- Internal Input Protection: Includes on-chip distributed diodes for internal input protection of all logic inputs.
- Control Inputs: Level-triggered control signals with inputs such as Chip Select, Write, and Load DAC, allowing for flexible data transfer and latch control.
Applications
- Industrial Control Systems: Suitable for precision control in industrial environments.
- Medical Devices: Can be used in medical equipment requiring high precision analog outputs.
- Aerospace and Defense: Applicable in systems requiring reliable and precise analog-to-digital conversion.
- Automotive Systems: Used in automotive applications that demand high accuracy and reliability.
Q & A
- What is the resolution of the AD7245JN DAC?
The AD7245JN has a 12-bit resolution.
- What are the output voltage ranges supported by the AD7245JN?
The AD7245JN supports both unipolar (0 V to 10 V) and bipolar (±5 V) output configurations.
- What is the typical chip select pulsewidth for the AD7245JN?
The typical chip select pulsewidth is 55 ns.
- What type of package does the AD7245JN come in?
The AD7245JN comes in a 24-PDIP package.
- Is the AD7245JN still in production?
No, the AD7245JN is obsolete and no longer manufactured.
- What are some key features of the AD7245JN?
Key features include high resolution, flexible output configuration, low digital feedthrough, and internal input protection.
- What are some common applications of the AD7245JN?
Common applications include industrial control systems, medical devices, aerospace and defense, and automotive systems.
- How does the AD7245JN protect its logic inputs?
The AD7245JN includes on-chip distributed diodes for internal input protection of all logic inputs.
- What is the purpose of the Load DAC input in the AD7245JN?
The Load DAC input is an asynchronous input that transfers data from the input latch to the DAC latch when active.
- What is the significance of the Chip Select and Write inputs in the AD7245JN?
The Chip Select and Write inputs control the loading of the input latch, with data being latched on the rising edge of the Write input.
