Overview
The DAC1282IPWR is a low distortion digital-to-analog converter (DAC) designed by Texas Instruments, specifically tailored for seismic applications. This device is part of a comprehensive solution for seismic data acquisition, offering high performance and low power consumption. It integrates a digital signal generator, a DAC, and an output amplifier, making it suitable for generating sine wave, DC, and pulse output voltages. The DAC1282IPWR is packaged in a 24-pin TSSOP (Thin Shrink Small Outline Package) and operates over a wide temperature range, making it versatile for various environmental conditions.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | 24-TSSOP (0.173", 4.40mm Width) |
| Resolution (Bits) | 24 bits |
| Data Interface | SPI |
| Voltage Supply Source | Analog and Digital, Dual ± |
| Voltage - Supply | ±2.5V, 5V, 1.8 V ~ 3.3 V |
| Operating Temperature | -50°C ~ 125°C |
| Mounting Type | Surface Mount |
| Power Consumption | 38 mW |
Key Features
- Single-Chip Test Signal Generator: Integrates a digital signal generator, a DAC, and an output amplifier.
- Buffered Voltage Output: Provides high-performance output with low distortion.
- High Performance Metrics: THD: –125 dB (G = 1/1 to 1/8), SNR: 120 dB (413 Hz BW, G = 1/1).
- Analog and Digital Gain Control: Adjustable in 6-dB steps for analog and 0.5-dB steps for digital gain.
- Output Frequency Range: Programmable from 0.488 Hz to 250 Hz.
- Output Modes: Sine, pulse, and DC modes available.
- Low On-Resistance Signal Switch: For connecting the DAC output to sensors for THD and impulse testing.
- Sync Input: Synchronizes the DAC output to the ADC sample interval.
- Power-Down Mode: Reduces power consumption to microwatts.
Applications
The DAC1282IPWR is primarily designed for seismic applications, particularly in the testing and calibration of seismic equipment. It is part of a measurement system that includes high-performance analog-to-digital converters (ADCs) like the ADS1281 and ADS1282, ensuring high-resolution and accurate data acquisition in seismic monitoring systems.
Q & A
- What is the primary application of the DAC1282IPWR?
The DAC1282IPWR is primarily used in seismic applications for testing and calibrating seismic equipment.
- What is the resolution of the DAC1282IPWR?
The resolution of the DAC1282IPWR is 24 bits.
- What are the available output modes of the DAC1282IPWR?
The DAC1282IPWR supports sine, pulse, and DC output modes.
- What is the operating temperature range of the DAC1282IPWR?
The operating temperature range is -50°C to 125°C.
- How is the output frequency of the DAC1282IPWR controlled?
The output frequency is programmable from 0.488 Hz to 250 Hz.
- What is the power consumption of the DAC1282IPWR?
The power consumption is 38 mW.
- Does the DAC1282IPWR have a power-down mode?
Yes, the DAC1282IPWR has a power-down mode that reduces power consumption to microwatts.
- What type of data interface does the DAC1282IPWR use?
The DAC1282IPWR uses an SPI (Serial Peripheral Interface) data interface.
- What are the voltage supply options for the DAC1282IPWR?
The DAC1282IPWR can be supplied with ±2.5V, 5V, and 1.8 V to 3.3 V for analog and digital supplies.
- Is the DAC1282IPWR RoHS compliant?
Yes, the DAC1282IPWR is RoHS compliant.
