参数资料
型号: LTC1856CG#PBF
厂商: Linear Technology
文件页数: 24/24页
文件大小: 0K
描述: IC ADC 16BIT 100KSPS 28-SSOP
标准包装: 47
位数: 16
采样率(每秒): 100k
数据接口: MICROWIRE?,串行,SPI?
转换器数目: 1
功率耗散(最大): 40mW
电压电源: 模拟和数字
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 28-SSOP(0.209",5.30mm 宽)
供应商设备封装: 28-SSOP
包装: 管件
输入数目和类型: 8 个单端,双极;4 个差分,双极
产品目录页面: 1347 (CN2011-ZH PDF)
9
LTC1854/LTC1855/LTC1856
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PI FU CTIO S
COM (Pin 1): Common Input. This is the negative refer-
ence point for all single-ended inputs. It must be free of
noise and is usually connected to the analog ground plane.
CH0 (Pin 2): Analog MUX Input.
CH1 (Pin 3): Analog MUX Input.
CH2 (Pin 4): Analog MUX Input.
CH3 (Pin 5): Analog MUX Input.
CH4 (Pin 6): Analog MUX Input.
CH5 (Pin 7): Analog MUX Input.
CH6 (Pin 8): Analog MUX Input.
CH7 (Pin 9): Analog MUX Input.
MUXOUT+ (Pin 10): Positive MUX Output. Output of the
analog multiplexer. Connect to ADC+ for normal operation.
MUXOUT(Pin 11): Negative MUX Output. Output of the
analog multiplexer. Connect to ADCfor normal operation.
ADC+ (Pin 12): Positive Analog Input to the Analog-to-
Digital Converter.
ADC(Pin 13): Negative Analog Input to the Analog-to-
Digital Converter.
AGND1 (Pin 14): Analog Ground.
VREF (Pin 15): 2.5V Reference Output. Bypass to analog
ground with a 1
mF tantalum capacitor.
REFCOMP (Pin 16): Reference Buffer Output. Bypass to
analog ground with a 10
mF tantalum and a 0.1mF ceramic
capacitor. Nominal output voltage is 4.096V.
AGND2 (Pin 17): Analog Ground.
AGND3 (Pin 18): Analog Ground. This is the substrate
connection.
AVDD (Pin 19): 5V Analog Supply. Bypass to analog ground
with a 0.1
mF ceramic and a 10mF tantalum capacitor.
DVDD (Pin 20): 5V Digital Supply. Bypass to digital ground
with a 0.1
mF ceramic and a 10mF tantalum capacitor.
OVDD (Pin 21): Positive Supply for the Digital Output
Buffers (3V to 5V). Bypass to digital ground with a 0.1
mF
ceramic and a 10
mF tantalum capacitor.
BUSY (Pin 22): Output shows converter status. It is low
when a conversion is in progress.
SDO (Pin 23): Serial Data Output.
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