ADC14L040中文资料14 位、40MSPS 模数转换器 (ADC)数据手册TI规格书

描述 Description

The ADC14L040 is a low power monolithic CMOS analog-to-digital converter capable of converting analog input signals into 14-bit digital words at 40 Megasamples per second (MSPS). This converter uses a differential, pipeline architecture with digital error correction and an on-chip sample-and-hold circuit to minimize power consumption while providing excellent dynamic performance and a 150 MHz Full Power Bandwidth. Operating on a single +3.3V power supply, the ADC14L040 achieves 11.9 effective bits at nyquist and consumes just 235 mW at 40 MSPS . The Power Down feature reduces power consumption to 15 mW.The differential inputs provide a full scale differential input swing equal to 2 times VREF with the possibility of a single-ended input. Full use of the differential input is recommended for optimum performance. Duty cycle stabilization and output data format are selectable using a quad state function pin. The output data can be set for offset binary or two's complement.To ease interfacing to lower voltage systems, the digital output driver power pins of the ADC14L040 can be connected to a separate supply voltage in the range of 2.4V to the analog supply voltage.This device is available in the 32-lead LQFP package and will operate over the industrial temperature range of −40°C to +85°C. An evaluation board is available to ease the evaluation process.

特性 Features

• Single +3.3V Supply Operation
• Internal Reference
• Duty Cycle Stabilizer
• Resolution 14 Bits
• SNR (fIN = 10 MHz) 74 dB (typ)
• Data Latency 7 Clock Cycles
• Operating 235 mW (typ)
• Power Down Mode 15 mW (typ)

简介

ADC14L040属于集成电路（IC）的模数转换器（ADC）。由TI制造生产的ADC14L040模数转换器（ADC）模数转换器（ADC、A/D 或 A 转 D）对模拟信号进行采样，例如由麦克风采集的声音或传感器的输出，然后将其转换为数字信号。一般来说，数字输出是二进制补码二进制数，与输入成比例。输入类型可能是差分、伪差分或单端输入。模数转换器可按照位数、采样率、输入数、接口、转换器数和架构（例如自适应增量、双斜率、折叠、流水线、SAR、三角积分、两步式）进行选择。