MAX1294中文资料420ksps、+5V、6/2通道、12位ADC，带有+2.5V电压基准及并行接口数据手册ADI规格书

描述 Description

The MAX1294/MAX1296 low-power, 12-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, automatic power-down, fast wake-up (2µs), an on-chip clock, +2.5V internal reference, and a high-speed 12-bit parallel interface. They operate with a single +5V analog supply.
Power consumption is only 10mW at the maximum sampling rate of 420ksps. Two software-selectable power-down modes enable the MAX1294/MAX1296 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can reduce supply below 10µA at lower sampling rates.
Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1294 has six input channels and the MAX1296 has two (three input channels and one input channel, respectively, when in pseudo-differential mode).
Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and data-acquisition applications or for other circuits with demanding power-consumption and space requirements.
The MAX1294/MAX1296 tri-states active-low INT when active-low CS goes high. Refer to MAX1266/MAX1268 if tri-stating active-low INT is not desired.
The MAX1294 is offered in a 28-pin QSOP package, while the MAX1296 is available in a 24-pin QSOP. For pin-compatible +3V, 12-bit versions, see the MAX1295/MAX1297.

特性 Features

• 12-Bit Resolution, ±0.5 LSB Linearity
• Single +5V Operation
• Internal +2.5V Reference
• Software-Configurable Analog Input Multiplexer
• 6-Channel Single-Ended/3-Channel Pseudo-Differential (MAX1294)
• 2-Channel Single-Ended/1-Channel Pseudo-Differential (MAX1296)
• Software-Configurable Unipolar/Bipolar Analog Inputs
• Low Current•2.8mA (420ksps)•1.0mA (100ksps)•400µA (10ksps)•2µA (Shutdown)
• Internal 6MHz Full-Power Bandwidth Track/Hold
• Parallel 12-Bit Interface•Small Footprint
• 28-Pin QSOP (MAX1294)
• 24-Pin QSOP (MAX1296)

应用 Application

• 数据采集系统
• 数据记录
• 能量管理
• 工业控制系统
• 病人监护
• 触摸屏

简介

MAX1294属于集成电路（IC）的模数转换器（ADC）。由制造生产的MAX1294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。