TLC2558 - 12 位 400KSPS ADC，具有 8 通道串行输出和关断状态

TLC2558是TI德州仪器公司的一款精密ADC(<=10MSPS)产品，TLC2558是12 位 400KSPS ADC，具有 8 通道串行输出和关断状态，本站介绍了TLC2558的封装应用图解、特点和优点、功能等，并给出了与TLC2558相关的TI元器件型号供参考。

TLC2558 - 12 位 400KSPS ADC，具有 8 通道串行输出和关断状态 - 精密ADC(<=10MSPS) - 模数转换器 - 德州仪器

产品描述

The TLC2558 and TLC2554 are a family of high-performance, 12-bit low power, 1.6 us, CMOS analog-to-digital converters (ADC) which operate from a single 5 V power supply. These devices have three digital inputs and a 3-state output [chip select (CS\), serial input-output clock (SCLK), serial data input (SDI), and serial data output (SDO)] that provide a direct 4-wire interface to the serial port of most popular host microprocessors (SPI interface). When interfaced with a DSP, a frame sync (FS) signal is used to indicate the start of a serial data frame.

In addition to a high-speed A/D converter and versatile control capability, these devices have an on-chip analog multiplexer that can select any analog inputs or one of three internal self-test voltages. The sample-and-hold function is automatically started after the fourth SCLK edge (normal sampling) or can be controlled by a special pin, CSTART\, to extend the sampling period (extended sampling). The normal sampling period can also be programmed as short (12 SCLKs) or as long (24 SCLKs) to accommodate faster SCLK operation popular among high-performance signal processors. The TLC2558 and TLC2554 are designed to operate with very low power consumption. The power-saving feature is further enhanced with software/hardware/auto power down modes and programmable conversion speeds. The converter uses the external SCLK as the source of the conversion clock to achieve higher (up to 1.6 us when a 20 MHz SCLK is used) conversion speed. There is a 4-V internal reference available. An optional external reference can also be used to achieve maximum flexibility.

产品特性

Maximum Throughput 400 KSPS
Built-In Reference and 8× FIFO
Differential/Integral Nonlinearity Error: ±1 LSB
Signal-to-Noise and Distortion Ratio: 69 dB, fi = 12 kHz
Spurious Free Dynamic Range: 75 dB, fi = 12 kHz
SPI/DSP-Compatible Serial Interfaces With SCLK up to 20 MHz
Single Supply 5 Vdc
Analog Input Range 0 V to Supply Voltage With 500 kHz BW
Hardware Controlled and Programmable Sampling Period
Low Operating Current (4 mA at 5.5 V External Ref, 6 mA at 5.5 V, Internal Ref)
Power Down: Software/Hardware Power-Down Mode (1 uA Max, Ext Ref), Auto Power-Down Mode (1 uA, Ext Ref)
Programmable Auto-Channel Sweep

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