TLV1548M

TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 D Conversion Time ≤ 10 µs D 10-Bit-Resolution ADC D Programmable Power-Down Mode . . . 1 µA D Wide Range Single-Supply Operation of 2.7 V dc to 5.5 V dc D Analog Input Range of 0 V to VCC D Built-in Analog Multiplexer with 8 Analog Input Channels D TMS320 DSP and Microprocessor SPI and QSPI Compatible Serial Interfaces D End-of-Conversion (EOC) Flag D Inherent Sample-and-Hold Function D Built-In Self-Test Modes D Programmable Power and Conversion Rate D Asynchronous Start of Conversion for Extended Sampling D Hardware I/O Clock Phase Adjust Input description 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. DATA OUT DATA IN I/O CLK EOC VCC A0 A1 A2 A0 A1 A2 A3 A4 A5 A6 A7 CSTART GND D OR PW PACKAGE (TOP VIEW) 1 16 2 15 3 14 4 ...