TLV1548-Q1 Datasheet | Texas Instruments

ą TLV1548ĆQ1 LOWĆVOLTAGE 10ĆBIT ANALOGĆTOĆDIGITAL CONVERTER WITH SERIAL CONTROL AND 8 ANALOG INPUTS SGLS172B - JUNE 2003 - REVISED APRIL 2008 D Qualified for Automotive Applications D ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 p F, R = 0) 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 patible 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 A0 A1 A2 A3 A4 A5 A6 A7 CSTART GND DB PACKAGE (TOP VIEW) VCC EOC I/O CLK DATA IN DATA OUT CS REF+ REF- FS INV CLK description The TLV1548 is a CMOS 10-bit switched-capacitor successive-approximation (SAR) analog-to-digital (A/D) converter. The device has a chip select (CS), input-output clock (I/O CLK), data input (DATA IN) and serial data output (DATA OUT) that provides 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 device allows high-speed data transfers from the host. The INV CLK input provides further timing flexibility for the serial interface. In addition to a high-speed converter and versatile control capability, the device has an on-chip 11-channel multiplexer that can select any one of eight analog inputs or any one of three internal self-test voltages. The sample-and-hold function is automatic except for the extended sampling cycle, where the sampling cycle is started...