Overview
The LTC1594IS#PBF is a 4-channel, micropower sampling 12-bit serial I/O analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the LTC1594 series and is known for its low power consumption and high precision. It features a switched-capacitor, successive approximation architecture and includes a sample-and-hold circuit. The ADC is designed to operate with a 5V supply and can be used in various applications requiring multiple analog input channels.
Key Specifications
| Specification | Value |
|---|---|
| Number of Channels | 4 |
| Resolution | 12-bit |
| Supply Voltage | 5V |
| Supply Current (Converting) | 320µA |
| Supply Current (Power Down) | 1nA |
| Package Type | 16-Lead SOIC (Narrow 0.15 Inch) |
| Analog Input Type | High Impedance |
| Full Scale Range | Up to 1.5V |
| Communication Interface | Serial I/O (3 or 4 wires) |
Key Features
- Micropower consumption: The device draws only 320µA of supply current when converting and powers down to 1nA between conversions, making it suitable for battery-powered and remote applications.
- High precision: The 12-bit resolution and switched-capacitor, successive approximation architecture ensure high accuracy in analog-to-digital conversions.
- Flexible input configuration: The ADC can operate in ratiometric applications or with an external reference, and it supports reduced spans down to 1.5V full scale.
- Efficient data transfer: On-chip serial ports enable efficient data transfer to microprocessors and microcontrollers over three or four wires.
- Direct sensor connection: High impedance analog inputs allow direct connection to sensors and transducers, often eliminating the need for gain stages.
Applications
The LTC1594IS#PBF is versatile and can be used in a variety of applications, including:
- Remote sensing and data acquisition systems due to its low power consumption and ability to operate through isolation barriers.
- Industrial automation and control systems where multiple analog inputs need to be monitored.
- Medical devices requiring precise analog-to-digital conversion.
- Automotive systems where the ADC's ability to operate with reduced spans and high impedance inputs is beneficial.
Q & A
- What is the resolution of the LTC1594IS#PBF ADC?
The LTC1594IS#PBF has a 12-bit resolution. - How many channels does the LTC1594IS#PBF support?
The LTC1594IS#PBF supports 4 channels. - What is the typical supply current when the device is converting?
The typical supply current when converting is 320µA. - What is the power-down current of the LTC1594IS#PBF?
The power-down current is typically 1nA. - What type of package does the LTC1594IS#PBF come in?
The LTC1594IS#PBF comes in a 16-Lead SOIC (Narrow 0.15 Inch) package. - Can the LTC1594IS#PBF be used with external references?
Yes, the LTC1594IS#PBF can be used with external references or in ratiometric applications. - What is the full scale range of the analog inputs?
The full scale range can be reduced down to 1.5V. - How does the LTC1594IS#PBF communicate with microprocessors?
The LTC1594IS#PBF communicates through on-chip serial ports over three or four wires. - Is the LTC1594IS#PBF suitable for battery-powered applications?
Yes, due to its low power consumption, it is suitable for battery-powered and remote applications. - Can the LTC1594IS#PBF be directly connected to sensors and transducers?
Yes, the high impedance analog inputs allow direct connection to sensors and transducers, often eliminating the need for gain stages.
