描述 Description

The MAX1091/MAX1093 low-power, 10-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, byte-wide parallel interface. They operate with a single +3V analog supply and feature a VLOGIC pin that allows them to interface directly with a +1.8V to +3.6V digital supply.
Power consumption is only 5.7mW (VDD = VLOGIC) at the maximum sampling rate of 250ksps. Two software-selectable power-down modes enable the MAX1091/MAX1093 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can cut supply current to under 10μA at reduced sampling rates.
Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1091 has eight input channels and the MAX1093 has four input channels (four and two input channels, 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 MAX1091/MAX1093 tri-states active-low INT when active-low CS goes high. Refer to MAX1061/MAX1063 if tri-stating active-low INT is not desired.
The MAX1091 is available in a 28-pin QSOP package, while the MAX1093 is available in a 24-pin QSOP. For pin-compatible +5V, 10-bit versions, refer to the MAX1090/MAX1092 data sheet.

特性 Features

? 10-Bit Resolution, ±0.5 LSB Linearity
? +3V Single-Supply Operation
? User-Adjustable Logic Level (+1.8V to +3.6V)
? Internal +2.5V Reference
? Software-Configurable, Analog Input Multiplexer
? 8-Channel Single-Ended/4-Channel Pseudo-Differential (MAX1091)
? 4-Channel Single-Ended/2-Channel Pseudo-Differential (MAX1093)
? Software-Configurable, Unipolar/Bipolar Inputs
? Low Power
? 1.9mA (250ksps)
? 1.0mA (100ksps)
? 400μA (10ksps)
? 2μA (Shutdown)
? Internal 3MHz Full-Power Bandwidth Track/Hold
? Byte-Wide Parallel (8 + 2) Interface
? Small Footprint:
? 28-Pin QSOP (MAX1091)
? 24-Pin QSOP (MAX1093)

應用 Application

? 數(shù)據(jù)采集系統(tǒng)
? 數(shù)據(jù)記錄
? 能量管理
? 工業(yè)控制系統(tǒng)
? 病人監(jiān)護
? 觸摸屏

簡介

MAX1091屬于集成電路（IC）的模數(shù)轉(zhuǎn)換器（ADC）。由制造生產(chǎn)的MAX1091模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對模擬信號進行采樣，例如由麥克風采集的聲音或傳感器的輸出，然后將其轉(zhuǎn)換為數(shù)字信號。一般來說，數(shù)字輸出是二進制補碼二進制數(shù)，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數(shù)轉(zhuǎn)換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉(zhuǎn)換器數(shù)和架構(gòu)（例如自適應增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進行選擇。