The TLV1544 and TLV1548 are CMOS 10-bit switched-capacitor successive-approximation (SAR) analog-to-digital (A/D) converters. Each device has a chip select (CS), input-output clock (I/O CLK), data input (DATA IN) and serial data output (DATA OUT) that provide a direct 4-wire synchronous serial peripheral interface (SPI, QSPI) port of a host microprocessor. When interfacing with a TMS320 DSP, an additional frame sync signal (FS) indicates the start of a serial data frame. The devices allow high-speed data transfers from the host. The INV CLK input provides further timing flexibility for the serial interface.
• Conversion Time ≤ 10 µs
• 10-Bit-Resolution ADC
• Programmable Power-Down Mode . . . 1 µA
• Wide Range Single-Supply Operation of 2.7 V dc to 5.5 V dc
• Analog Input Range of 0 V to VCC
• Built-in Analog Multiplexer with 8 Analog Input Channels
• TMS320 DSP and Microprocessor SPI and QSPI Compatible Serial Interfaces
• End-of-Conversion (EOC) Flag
• Inherent Sample-and-Hold Function
• Built-In Self-Test Modes
• Programmable Power and Conversion Rate
• Asynchronous Start of Conversion for Extended Sampling
