Texas Instruments ADCS7477
The ADCS7476, ADCS7477, and ADCS7478 devices are low power, monolithic CMOS 12-, 10-, and 8-bit analog-to-digital converters that operate at 1 MSPS. The ADCS747x devices are a drop-in replacement for Analog Device's AD747x. Each device is based on a successive approximation register architecture with internal track-and-hold.FEATURES
●1 Variable Power Management● Packaged in 6-Pin SOT-23
● Power Supply Used as Reference
● Single 2.7-V to 5.25-V Supply Operation
● Compatible With SPI™, QSPI™, MICROWIRE™, and DSP
● Key Specifications – Resolution With No Missing Codes (12-Bit, 10Bit, and 8-Bit) – Conversion Rate: 1 MSPS – DNL: 0.5, –0.3 LSB (Typical) – INL: ±0.4 LSB (Typical) – Power Consumption: – 3-V Supply: 2 mW (Typical) – 5-V Supply: 10 mW (Typical) 2
APPLICATIONS
● Automotive Navigation● FA or ATM Equipment
● Portable Systems
● Medical Instruments
● Mobile Communications
● Instrumentation and Control Systems 3
DESCRIPTION
The serial interface is compatible with several standards, such as SPI, QSPI, MICROWIRE, and many common DSP serial interfaces. The ADCS747x uses the supply voltage as a reference, enabling the device to operate with a fullscale input range of 0 to VDD. The conversion rate is determined from the serial clock (SCLK) speed. These converters offer a shutdown mode, which can be used to trade throughput for power consumption.