DAC7678
- Relative Accuracy:
- 1 LSB INL
- Glitch Energy: 0.15nV-s
- Internal Reference:
- 2.5V Reference Voltage (disabled by default)
- ±5mV Initial Accuracy (max)
- 5ppm/°C Temperature Drift (typ)
- 25ppm/°C Temperature Drift (max)
- 20mA Sink/Source Capability
- Power-On Reset to Zero Scale or Midscale
- Devices in the TSSOP Package Reset to
Zero Scale - Devices in the QFN Package Reset to Zero Scale
or Midscale
- Devices in the TSSOP Package Reset to
- Ultra-Low Power Operation: 0.13mA/Channel at 5V
(without internal reference current) - Wide Power-Supply Range: +2.7V to +5.5V
- 2-Wire Serial Interface (I2C compatible)
- On-Chip Output Buffer Amplifier with Rail-to-Rail
Operation - Temperature Range: –40°C to +125°C
- APPLICATIONS
- Portable Instrumentation
- Closed-Loop Servo-Control
- Process Control
- Data Acquisition Systems
- Programmable Attenuation
- PC Peripherals
All other trademarks are the property of their respective owners
The DAC7678 is a low-power, voltage-output, octal channel, 12-bit digital-to-analog converter (DAC). The DAC7678 includes a 2.5V internal reference (disabled by default), giving a full-scale output voltage range of 5V. The internal reference has an initial accuracy of ±5mV and can source up to 20mA at the VREFIN/VREFOUT pin. The device is monotonic, provides very good linearity, and minimizes undesired code-to-code transient voltages (glitch).
The DAC7678 uses a versatile, 2-wire serial interface that is I2C-compatible and operates at clock rates of up to 3.4MHz. Multiple devices can share the same bus.
The DAC7678 incorporates a power-on-reset circuit that ensures the DAC output powers up to either zero-scale or mid-scale until a valid code is written to the device. These devices contain a power-down feature, accessed over the serial interface that reduces the current consumption of the device to typically 0.42µA at 5V. Power consumption (including internal reference) is typically 3.56mW at 3V, reducing to 0.68µW in power-down mode. The low power consumption, internal reference, and small footprint make this device ideal for portable, battery-operated equipment. The DAC7678 is drop-in and functionally compatible with DAC5578, DAC6578, and DAC7578. All devices are available in a 4x4 QFN-24 package and a TSSOP-16 package.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | 12-Bit, Octal-Chan, Ultra-Low Glitch, Voltage Output, 2-Wire Int DAC w/2.5V Ref datasheet (Rev. C) | 2014. 1. 21 | ||
| 애플리케이션 노트 | A Basic Guide to I2C | PDF | HTML | 2022. 11. 8 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
DAC7678EVM — DAC7678 평가 모듈
DAC7678EVM은 DAC7678, DAC5578, DAC6578, DAC7578 디지털-아날로그 컨버터를 평가하도록 설계되었습니다. DAC7678EVM은 기본적으로 DAC7678이 장착된 상태로 제공되지만 다른 핀 호환 장치 중 하나로 교체할 수 있습니다. 이 EVM은 저전력 고해상도 8~12비트 디지털-아날로그 컨버터(DAC) 시리즈의 기능과 성능을 빠르고 쉽게 평가할 수 있는 방법을 제공합니다. 2회선 I²C 인터페이스 헤더를 사용하여 DAC의 SCL 및 SDA 핀을 모든 호스트 마이크로프로세서 또는 TI DSP 기반 (...)
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
| TSSOP (PW) | 16 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.