DAC1280 - 用于地震应用的极低失真数模转换器

DAC1280是TI德州仪器公司的一款精密DAC(=<10MSPS)产品，DAC1280是用于地震应用的极低失真数模转换器，本站介绍了DAC1280的封装应用图解、特点和优点、功能等，并给出了与DAC1280相关的TI元器件型号供参考。

DAC1280 - 用于地震应用的极低失真数模转换器 - 精密DAC(=<10MSPS) - 数模转换器 - 德州仪器

产品描述

The DAC1280 is a very low distortion digital-to-analog converter (DAC) suited for performance testing of seismic equipment. The DAC1280 provides a high-accuracy output signal from a bitstream input. The device achieves very high linearity in a small package while dissipating only 18mW. Together with the high-performance ADS1281 and ADS1282 analog-to-digital converters (ADCs), these devices create a test and measurement system that meets the exacting demands of energy exploration and seismic monitoring equipment.

The DAC1280 is designed to match the system components (power supply, clock and reference voltage) of the companion ADCs, the ADS1281 and ADS1282. The input to the DAC1280 is a 1s density modulated bitstream. The DAC1280 output is a differential current intended for use with an active I/V converter. The I/V converter provides a voltage output suitable for performance testing of sensors and ADCs.

Three gain control pins set the output range in 6dB steps from 0dB to –36db (±2.5V to ±0.039V differential). The attenuation ranges match the gains of the ADS1282 for testing at all gains. The DAC uses a reference voltage and bias resistor to set the full-scale output. The resistor can be adjusted to fine-trim the DAC full-scale.

The SYNC pin aligns the input data sampling to the CLK phase. A power-down pin shuts down the device when not in use. The DAC1280 is available in a small, 16-pin TSSOP package and is fully specified for operation over –40°C to +85°C temperature range with a maximum operating temperature of +125°C.

产品特性

Outstanding Performance:
- THD: –125dB
- SNR: 120dB (413Hz BW, Gain = 1/1)
- Gain Error: 0.1%
Pin Operation: No Registers to Program
Gain: 1/1 to 1/64
SYNC Input for Phase Control
Power-Down Mode
Low Power: 18mW
Analog Supply: +5V or ±2.5V
Digital Supply: 1.8V to 3.3V
Small 16-Pin TSSOP Package
Temperature Range: –40°C to +85°C
APPLICATIONS
- Energy Exploration Equipment
- Seismic Monitoring Systems

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