ADS7280IPWR

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. Low Power, High-Speed SAR Converter Family

Applications

• Communications
• Transducer Interface
• Medical Instruments
• Magnetometers
• Industrial Process Control
• Data Acquisition Systems
• Automatic Test Equipment

Key features

• 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 f1 = 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)