Overview
The AMC7823IRTAR from Texas Instruments is a comprehensive analog monitoring and control circuit designed for multichannel applications. This integrated circuit includes an 8-channel, 12-bit analog-to-digital converter (ADC), eight 12-bit digital-to-analog converters (DACs), four analog input out-of-range alarms, and six general-purpose digital I/Os. It is ideal for monitoring analog signals and controlling external devices, making it suitable for various industrial, medical, and communication applications. The AMC7823IRTAR also features an internal temperature sensor, a precision current source for remote temperature monitoring, and an internal bandgap reference. It operates on a single 3V to 5V supply and is available in a compact 40-lead QFN package.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Resolution (ADC/DAC) | Number of bits | 12 bits |
| Sampling Rate (ADC) | Samples per second | 200 kSPS |
| Analog Input Range | Voltage range | 0 to 2 × VREF (0 to 5V) |
| Analog Output Range (DAC) | Voltage range | 0 to 2.5V or 0 to 5V |
| Settling Time (DAC) | Time to settle | 2 μs |
| Supply Voltage | Voltage range | 3V to 5V |
| Operating Temperature | Temperature range | -40°C to +85°C |
| Package Type | Package description | 40-lead QFN (6 × 6 mm) |
| Data Interface | Interface type | SPI, 3V or 5V logic compatible |
Key Features
- Integrated Multichannel ADC and DAC: Includes an 8-channel, 12-bit ADC and eight 12-bit DACs.
- Analog Input Out-of-Range Alarms: Four alarms to detect out-of-range conditions.
- General-Purpose Digital I/Os: Six GPIOs for monitoring and controlling external devices.
- Internal Temperature Sensor: Monitors chip temperature.
- Precision Current Source: Drives remote thermistors or RTDs for remote temperature monitoring.
- Internal Bandgap Reference: Provides a stable reference voltage.
- SPI Interface: Compatible with 3V or 5V logic.
- Low Power and Small Size: Operates in power-down mode and is packaged in a compact 40-lead QFN.
Applications
- Communications Equipment: Suitable for multichannel monitoring and control in communication systems.
- Optical Networks: Used in optical network equipment for precise monitoring and control.
- Automatic Test Equipment: Ideal for test and measurement applications requiring multiple channels.
- Industrial Control and Monitoring: Used in industrial automation for monitoring and controlling various parameters.
- Medical Equipment: Suitable for medical devices that require precise analog monitoring and control.
Q & A
- What is the resolution of the ADC and DAC in the AMC7823IRTAR?
The ADC and DAC in the AMC7823IRTAR have a resolution of 12 bits each.
- What is the sampling rate of the ADC?
The ADC has a sampling rate of 200 kSPS.
- What is the operating temperature range of the AMC7823IRTAR?
The operating temperature range is -40°C to +85°C.
- What type of package does the AMC7823IRTAR come in?
The AMC7823IRTAR is packaged in a 40-lead QFN (6 × 6 mm).
- Does the AMC7823IRTAR have an internal temperature sensor?
Yes, the AMC7823IRTAR includes an internal temperature sensor.
- What is the purpose of the precision current source in the AMC7823IRTAR?
The precision current source is used to drive remote thermistors or RTDs for remote temperature monitoring.
- Is the AMC7823IRTAR compatible with 3V or 5V logic?
Yes, the AMC7823IRTAR has an SPI interface that is compatible with both 3V and 5V logic.
- What are the typical applications of the AMC7823IRTAR?
The AMC7823IRTAR is used in communications equipment, optical networks, automatic test equipment, industrial control and monitoring, and medical equipment.
- Does the AMC7823IRTAR support power-down mode?
Yes, the AMC7823IRTAR has a power-down mode to reduce power consumption.
- What is the supply voltage range for the AMC7823IRTAR?
The supply voltage range is 3V to 5V.
