TLV1548-Q1 - 具有串行控制和 8 个模拟输入的汽车类低压 10 位模数转换器

TLV1548-Q1是TI德州仪器公司的一款精密ADC(<=10MSPS)产品，TLV1548-Q1是具有串行控制和 8 个模拟输入的汽车类低压 10 位模数转换器，本站介绍了TLV1548-Q1的封装应用图解、特点和优点、功能等，并给出了与TLV1548-Q1相关的TI元器件型号供参考。

TLV1548-Q1 - 具有串行控制和 8 个模拟输入的汽车类低压 10 位模数转换器 - 精密ADC(<=10MSPS) - 模数转换器 - 德州仪器

产品描述

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 by the falling edge of asynchronous CSTART. At the end of the A/D conversion, the end-of-conversion (EOC) output goes high to indicate that the conversion is complete. The TLV1548 is designed to operate with a wide range of supply voltages with very low power consumption. The power saving feature is further enhanced with a software-programmed power-down mode and conversion rate. The converter incorporated in the device features differential high-impedance reference inputs that facilitate ratiometric conversion, scaling, and isolation of analog circuitry from logic and supply noise. A switched-capacitor design allows low-error conversion over the full operating temperature range.

The TLV1548 has eight analog input channels. The TLV1548Q is characterized for operation over the full automotive temperature range of –40°C to 125°C.

产品特性

Qualified for Automotive Applications
ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
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
Hardware I/O Clock Phase Adjust Input

SPI and QSPI are registered trademarks of Motorola, Inc.

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