ADS7280 - 低功耗、14 位、1MHz 单/双路单极输入 ADC，具有串行接口

ADS7280是TI德州仪器公司的一款精密ADC(<=10MSPS)产品，ADS7280是低功耗、14 位、1MHz 单/双路单极输入 ADC，具有串行接口，本站介绍了ADS7280的封装应用图解、特点和优点、功能等，并给出了与ADS7280相关的TI元器件型号供参考。

ADS7280 - 低功耗、14 位、1MHz 单/双路单极输入 ADC，具有串行接口 - 精密ADC(<=10MSPS) - 模数转换器 - 德州仪器

产品描述

The ADS7279 is a low-power, 14-bit, 1MSPS analog-to-digital converter (ADC) with a unipolar input. The device includes a 14-bit, capacitor-based successive approximation register (SAR) ADC with inherent sample-and-hold.

The ADS7280 is based on the same core and includes a 2-to-1 input MUX with a programmable TAG bit output option. Both the ADS7279 and ADS7280 offer a high-speed, wide voltage serial interface, and are capable of daisy-chain mode operation when multiple converters are used.

These converters are available in 4 × 4 QFN and TSSOP-16 packages, and are fully specified for operation over the industrial -40°C to +85°C temperature range.

产品特性

2.7V to 5.5V Analog Supply, Low Power:
- 13.7mW (1MHz, +VA = 3V, +VBD = 1.8V)
1MHz Sampling Rate 3V ≤ +VA ≤ 5.5V,900kHz Sampling Rate 2.7V ≤ +VA ≤ 3V
Excellent DC Performance:
- ±0.4LSB Typ, ±1.0LSB Max INL
- ±0.4LSB Typ, ±1.0LSB Max DNL
- ±0.8mV Max Offset Error at 3V
- ±1.25mV Max Offset Error at 5V
Excellent AC Performance at fi = 10kHz with 85.9dB SNR, 105.3dB SFDR, -100.1dB THD
Built-In Conversion Clock (CCLK)
1.65V to 5.5V I/O Supply:
- SPI/DSP-Compatible Serial Interface
- SCLK up to 50MHz
Comprehensive Power-Down Modes:
- Deep Power-Down
- Nap Power-Down
- Auto Nap Power-Down
Unipolar Input Range: 0V to VREF
Software Reset
Global CONVST (Independent of CS)
Programmable Status/Polarity EOC/INT
4 × 4 QFN-16 and TSSOP-16 Packages
Multi-Chip Daisy-Chain Mode
Programmable TAG Bit Output
Auto/Manual Channel Select Mode (ADS7280)
APPLICATIONS
- Communications
- Transducer Interface
- Medical Instruments
- Magnetometers
- Industrial Process Control
- Data Acquisition Systems
- Automatic Test Equipment

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