参数资料
型号: ATTINY84A-SSU
厂商: Atmel
文件页数: 119/135页
文件大小: 0K
描述: IC MCU 8BIT 8K FLASH 14SOIC
标准包装: 55
系列: AVR® ATtiny
核心处理器: AVR
芯体尺寸: 8-位
速度: 20MHz
连通性: USI
外围设备: 欠压检测/复位,POR,PWM,温度传感器,WDT
输入/输出数: 12
程序存储器容量: 8KB(4K x 16)
程序存储器类型: 闪存
EEPROM 大小: 512 x 8
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
包装: 管件
MB91470/480 Series
83
Definition of 8/10-bit A/D Converter Terms
Resolution
: Analog variation that is recognized by the A/D converter.
Linearity error
: Deviation between the line connecting zero transition point
(0000000000
←→0000000001) and full-scale transition point
(1111111110
←→1111111111) and actual conversion characteristics.
Differential linear error : Deviation from the ideal value of input voltage necessary to change the output code
by ILSB.
Total Error
: This error is the difference between actual and ideal values, including the zero
transition error/full-scale transition error/linearity error.
(Continued)
FFFH
FFEH
FFDH
004H
003H
002H
001H
AVSS
AVRH
{1 LSB (N
1) + VOT}
AVSS
AVRH
(N
2)H
(N
1)H
NH
(N
+ 1)H
Actual conversion
characteristic
VFST
(Measurement
value)
VNT
VOT
V(N+1)T
VNT
Actual conversion
characteristic
Actual conversion
characteristic
Actual conversion
characteristic
(Measurement
value)
(Measurement value)
(Measurement
value)
(Measurement value)
Ideal characteristic
Linearity error
Differential linear error
Digital
output
Digital
output
Analog input
N
: A/D converter digital output value
VOT
: Voltage at which digital output changes from 000H to 001H.
VFST : Voltage at which digital output changes from 3FEH to 3FFH.
VNT
: Voltage at which digital output changes from (N
1) H to NH.
Linear error in digital output N
=
VNT
{1 LSB × (N 1) + VOT}
[LSB]
1 LSB
Differential linear error in digital output N
=
V (N+1) T
VNT
1 [LSB]
1 LSB
=
VFST
VOT
1022
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