Overview
The DAC1282IPW 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 equipment, offering high performance and flexibility in generating test signals. The DAC1282IPW integrates a digital signal generator, a DAC, and an output amplifier, providing sine wave, DC, and pulse output voltages. It is known for its high resolution and low power consumption, making it an ideal component for demanding seismic testing scenarios.
Key Specifications
| Part Number | DAC1282IPW |
|---|---|
| Manufacturer | Texas Instruments |
| Category | ADCs/DACs - Special Purpose |
| Type | DAC |
| Number of Channels | 1 |
| Resolution (Bits) | 24 bits |
| Data Interface | SPI |
| Voltage Supply Source | Analog and Digital, Dual ± |
| Voltage - Supply | ±2.5V, 5V, 1.8V ~ 3.3V |
| Operating Temperature | -50°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 24-TSSOP (0.173", 4.40mm Width) |
| Power Consumption (Typ) | 38 mW |
| Output Type | Buffered Voltage |
| Settling Time | 100 µs |
| Sample / Update Rate | 0.256 MSPS |
Key Features
- Single-Chip Test Signal Generator: Integrates a digital signal generator, a DAC, and an output amplifier.
- Buffered Voltage Output: Provides high-quality output signals.
- High Performance: Offers THD of –125 dB and SNR of 120 dB.
- Analog and Digital Gain Control: Adjustable in 6-dB steps for analog and 0.5-dB steps for digital.
- Output Frequency Range: Programmable from 0.488 Hz to 250 Hz.
- Output Modes: Sine, pulse, and DC modes available.
- Digital Data Input Mode: Allows custom output signals using external bitstream patterns.
- Low On-Resistance Signal Switch: For connecting 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 DAC1282IPW is primarily designed for seismic applications, including the testing and calibration of seismic equipment. It is part of a comprehensive measurement system that includes high-performance analog-to-digital converters (ADCs) like the ADS1281 and ADS1282. This device is suitable for various seismic testing scenarios, including THD (Total Harmonic Distortion) and impulse testing.
Q & A
- What is the primary application of the DAC1282IPW?
The DAC1282IPW is primarily designed for seismic applications, including the testing and calibration of seismic equipment.
- What is the resolution of the DAC1282IPW?
The resolution of the DAC1282IPW is 24 bits.
- What types of output signals can the DAC1282IPW generate?
The DAC1282IPW can generate sine wave, DC, and pulse output signals.
- What is the operating temperature range of the DAC1282IPW?
The operating temperature range of the DAC1282IPW is -50°C to 125°C.
- What is the power consumption of the DAC1282IPW?
The typical power consumption of the DAC1282IPW is 38 mW.
- What interface does the DAC1282IPW use for data input?
The DAC1282IPW uses the SPI (Serial Peripheral Interface) for data input.
- Can the DAC1282IPW be synchronized with an ADC?
Yes, the DAC1282IPW has a SYNC input to synchronize the DAC output with the ADC sample interval.
- What is the package type of the DAC1282IPW?
The DAC1282IPW comes in a 24-TSSOP (Thin Shrink Small Outline Package) with 24 pins.
- Does the DAC1282IPW have a power-down mode?
Yes, the DAC1282IPW has a power-down mode that reduces power consumption to microwatts.
- Can the DAC1282IPW generate custom output signals?
Yes, the DAC1282IPW can generate custom output signals using external bitstream patterns.
