参数资料
型号: AD5590BBC
厂商: Analog Devices Inc
文件页数: 22/44页
文件大小: 0K
描述: IC ADC I/O PORT16 W/AMP 80CSPBGA
标准包装: 1
位数: 12
采样率(每秒): 1M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 2
功率耗散(最大): 12.5mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 80-LFBGA,CSPBGA
供应商设备封装: 80-CSP-BGA(10x10)
包装: 托盘
输入数目和类型: 16 个单端,单极
AD5590
Rev. A | Page 29 of 44
Reference Section
An external reference source should be used to supply the 2.5 V
reference to the ADC. Errors in the reference source results in
gain errors in the ADC transfer function and adds to the specified
full-scale errors of the ADC. A capacitor of at least 0.1 F should
be placed on the VREFA pin. Suitable reference sources for the
ADC include the AD780, REF193, and the AD1852.
If 2.5 V is applied to the VREFA pin, the analog input range can
either be 0 V to 2.5 V or 0 V to 5 V, depending on the range bit
in the control register.
AMPLIFIER SECTION
The operational amplifiers in the AD5590 are micropower,
rail-to-rail input and output amplifiers that feature low supply
current, low input voltage, and low current noise.
The parts are fully specified to operate from a single 5.0 V
supply, or ±2.5 V dual supplies. The ability to swing rail-to-rail
at both the input and output enables designers to buffer CMOS
ADCs, DACs, ASICs, and other wide output swing devices in
low power, single-supply systems. The amplifiers in the AD5590
are fully independent of the DAC and ADC sections. If some or
all of the amplifiers are not required, connect them as a
grounded unity-gain buffer, as shown in Figure 59.
07691-
059
Figure 59. Configuration for Unused Amplifiers
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