ADS7229IRSAR Datasheet PDF - TI

●DESCRIPTION

●The ADS7229 is a low-power, 12-bit, 1MSPS analog-to-digital converter (ADC) with a unipolar input. The device includes a 12-bit capacitor-based successive approximation register (SAR) ADC with inherent sample-and-hold.

●The ADS7230 is based on the same core and includes a 2-to-1 input MUX with a programmable TAG bit output option. Both the ADS7229 and ADS7230 offer a high-speed, wide voltage serial interface and are capable of daisy-chain mode operation when multiple converters are used.

●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:

●   – ±0.15LSB Typ, ±0.5LSB Max INL

●   – ±0.12LSB Typ, ±0.5LSB Max DNL

●   – ±0.8mV Max Offset Error at 3V

●   – ±1.25mV Max Offset Error at 5V

●• Excellent AC Performance at fI = 10kHz with 73.9dB SNR, 93.4dB SFDR, –88.5dB 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 (ADS7230)

●APPLICATIONS

●• Communications

●• Transducer Interface

●• Medical Instruments

●• Magnetometers

●• Industrial Process Control

●• Data Acquisition Systems

●• Automatic Test Equipment