AD7859:3 V至5 V单电源、200 kSPS、8通道、12位并行采样ADC

AD7859: 3 V至5 V单电源、200 kSPS、8通道、12位并行采样ADC

AD7859 功能框图 AD7859/AD7859L均为高速、低功耗、8通道、12位ADC，采用3 V或5 V单电源供电，二者分别针对速度和低功耗进行了优化。两款ADC都含有自校准和系统校准选项，可确保操作精度不受时间和温度影响，还具有适合低功耗应用的多个省电选项。AD7859的吞吐量可达200 kHz，而AD7859L的吞吐量可达100 kHz。通过输入采样保持功能可在500 ns内采集一个信号，并采用伪差分采样方案。AD7859和AD7859L的输入电压范围为0至VREF（单极性）和以VREF/2为中心的-VREF/2至+VREF/2（双极性）；单极性方式下采用标准二进制编码，双极性方式下采用二进制补码输出编码。输入信号范围可至电源电压，而且两款器件能够转换100 kHz的全功率信号。CMOS结构可确保获得低功耗，正常工作模式下的典型功耗为5.4 mW，省电模式下为3.6 µW。两款器件提供44引脚、塑料四方扁平（PQFP）和塑料引脚片式载体（PLCC）两种封装。

The AD7858/AD7858Lare high speed, low power, 12-bit ADCs that operate from a single 3 V or 5 V power supply, the AD7858 being optimized for speed and the AD7858L for low power. The ADC powers up with a set of default conditions at which time it can be operated as a read only ADC. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and have a number of power-down options for low power applications. The part powers up with a set of default conditions and can operate as a read only ADC.The AD7858 is capable of 200 kHz throughput rate while the AD7858L is capable of 100 kHz throughput rate. The input track-and-hold acquires a signal in 500 ns and features a pseudo-differential sampling scheme. The AD7858/AD7858L voltage range is 0 to VREF with both straight binary and 2s complement output coding. Input signal range is to the supply and the part is capable of converting full power signals to 100 kHz.CMOS construction ensures low power dissipation of typically 5.4 mW for normal operation and 3.6 µW in power-down mode. The part is available in 24-pin, 0.3 inch-wide dual-in-line package (DIP), 24-lead small outline (SOIC) and 24-lead small shrink outline (SSOP) packages

AD7859 特点

正常工作模式：
AD7859：15 mW （VDD = 3 V）
AD7859L：5.5 mW （VDD = 3 V）
使用转换后自动关断功能（25 µW）
AD7859：1.3 mW （VDD = 3 V 10 kSPS）
AD7859L：650 µW （VDD = 3 V 10 kSPS）
额定电压（VDD）：3 V至5.5 V
AD7859–200 kSPS
AD7859L–100 kSPS
系统校准和自校准
灵活的并行接口：
16位并行/8位并行
44引脚PQFP和PLCC封装

AD7859 技术指标

Resolution (Bits): 12bit
# Chan: 8
Sample Rate: 200kSPS
Interface: Byte,Par
Analog Input Type: SE-Bip,SE-Uni
Ain Range: (Vref) p-p,Uni (Vref)
ADC Architecture: SAR
Pkg Type: LCC,QFP

AD7859 芯片订购指南

产品型号	封装	引脚	温度范围	包装和数量	报价*(100-499)	报价*1000 pcs
AD7859APZ-REEL 产品状态: 量产	44 ld PLCC	44	工业	Reel, 500	-	$ 7.43
AD7859ASZ 产品状态: 量产	44 ld MQFP (13.90mm wide)	44	工业	Tray, 96	$ 8.77	$ 7.43
AD7859ASZ-REEL 产品状态: 量产	44 ld MQFP (13.90mm wide)	44	工业	Reel, 800	-	$ 7.43
AD7859BSZ 产品状态: 量产	44 ld MQFP (13.90mm wide)	44	工业	Tray, 96	$ 11.13	$ 9.46
AD7859LASZ 产品状态: 量产	44 ld MQFP (13.90mm wide)	44	工业	Tray, 96	$ 7.99	$ 6.88
AD7859LASZ-REEL 产品状态: 量产	44 ld MQFP (13.90mm wide)	44	商业	Reel, 800	-	$ 6.88