参数资料
型号: AD7302BR
厂商: Analog Devices Inc
文件页数: 15/16页
文件大小: 0K
描述: IC DAC 8BIT DUAL 2.7V 20-SOIC
产品培训模块: Data Converter Fundamentals
DAC Architectures
产品变化通告: Product Discontinuance 27/Oct/2011
标准包装: 37
设置时间: 1.2µs
位数: 8
数据接口: 并联
转换器数目: 2
电压电源: 单电源
功率耗散(最大): 24.8mW
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
供应商设备封装: 20-SOIC W
包装: 管件
输出数目和类型: 2 电压,单极;2 电压,双极
采样率(每秒): 833k
AD7302
–8–
REV. 0
1
2
VOB
M20.0ms
VOA
VDD
3
CH1
CH3
5.00V
CH2
5.00V
CH1
T
Figure 11. Power-On—RESET
INPUT CODE (10 to 245)
INL
ERROR
LSB
0
256
32
64
96
128 160
192
224
DAC B
DAC A
VDD = 5V
INTERNAL REFERENCE
5k
100pf. LOAD
LIMITED CODE RANGE (10–245)
TA = +25°C
–0.5
0.4
0.1
–0.1
–0.3
–0.4
0.3
0.2
0
–0.2
0.5
Figure 14. Integral Linearity Plot
–25
4
0
7
6
2
1
5
3
8
9
10
–50
0
25
50
75
100
125
TEMPERATURE – C
DAC A
DAC B
ZERO
CODE
ERROR
LSB
VDD = 2.7 TO 5.5V
DAC LOADED WITH ALL ZEROES
INTERNAL REFERENCE
Figure 12. Zero Code Error vs.
Temperature
VDD = 5V
INTERNAL REFERENCE
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
–60 –40 –20
0
20
40
60
80 100 120 140
INL
ERROR
LSB
TEMPERATURE – C
Figure 15. Typical INL vs. Temperature
2
1
WR
VOUT
VDD = 5V
INTERNAL VOLTAGE
REFERENCE
10 LSB STEP CHANGE
TA = +25 C
CH1 5.00V, CH2 50.0mV, M 250ns
Figure 13. Small-Scale Settling Time
VDD = 5V
INTERNAL REFERENCE
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
–60 –40 –20
0
20
40
60
80 100 120 140
TEMPERATURE – C
DNL
ERROR
LSB
Figure 16. Typical DNL vs. Temperature
VDD = 5V
0.6
0.4
0.2
0
–60 –40 –20
0
20
40
60
80 100 120 140
TEMPERATURE – C
INT
REFERENCE
ERROR
%
0.8
1.0
Figure 17. Typical Internal Reference
Error vs. Temperature
TEMPERATURE – C
0
–50
–25
0
100
125
VDD = 5V
LOGIC INPUTS = VDD OR GND
100
200
300
400
500
600
700
800
900
1000
25
50
75
POWER-DOWN
CURRENT
nA
Figure 18. Power-Down Current vs.
Temperature
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