参数资料
型号: AD7991YRJZ-0RL
厂商: Analog Devices Inc
文件页数: 2/28页
文件大小: 0K
描述: IC ADC 12BIT 4CH I2C SOT23-8
产品变化通告: AD7991,5,9 Offset Error Change 17/Sept/2010
设计资源: Using AD8599 as an Ultralow Distortion Driver for the AD7991 (CN0043)
标准包装: 10,000
位数: 12
采样率(每秒): 1M
数据接口: I²C,串行
转换器数目: 1
功率耗散(最大): 4.68mW
电压电源: 单电源
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SOT-23-8
供应商设备封装: SOT-23-8
包装: 带卷 (TR)
输入数目和类型: 4 个单端,单极
配用: EVAL-AD7991EBZ-ND - BOARD EVAL FOR AD7991
AD7991/AD7995/AD7999
Rev. B | Page 10 of 28
Limit at tMIN, tMAX
Parameter
Conditions
Min
Typ
Max
Unit
Description
t10
Standard mode
300
ns
tFDA, fall time of the SDA signal
Fast mode
20 + 0.1 CB
300
ns
High speed mode
CB = 100 pF maximum
10
80
ns
CB = 400 pF maximum
20
160
ns
t11
Standard mode
1000
ns
tRCL, rise time of the SCL signal
Fast mode
20 + 0.1 CB
300
ns
High speed mode
CB = 100 pF maximum
10
40
ns
CB = 400 pF maximum
20
80
ns
t11A
Standard mode
1000
ns
tRCL1, rise time of the SCL signal after a repeated
start condition and after an acknowledge bit
Fast mode
20 + 0.1 CB
300
ns
High speed mode
CB = 100 pF maximum
10
80
ns
CB = 400 pF maximum
20
160
ns
t12
Standard mode
300
ns
tFCL, fall time of the SCL signal
Fast mode
20 + 0.1 CB
300
ns
High speed mode
CB = 100 pF maximum
10
40
ns
CB = 400 pF maximum
20
80
ns
Fast mode
0
50
ns
Pulse width of the suppressed spike
High speed mode
0
10
ns
tPOWER-UP
0.6
μs
Power-up and acquisition time
1 Functionality is tested during production.
2 A device must provide a data hold time for SDA in order to bridge the undefined region of the SCL falling edge.
3 For 3 V supplies, the maximum hold time with
CB = 100 pF maximum is 100 ns maximum.
t6
t7
t2
t11
t4
t1
t12
t10
t5
t9
t6
t3
t8
0
64
61
-0
02
SCL
S
SDA
S = START CONDITION
P = STOP CONDITION
P
S
Figure 2. 2-Wire Serial Interface Timing Diagram
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