●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.
● 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
Part 3D Model
