LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M
LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND...
Description
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
...
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