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LTC1853 PDF预览

LTC1853

更新时间: 2023-12-20 18:44:11
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
24页 239K
描述
8 通道、12 位、400ksps、低功率、采样 ADC

LTC1853 数据手册

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LTC1852/LTC1853  
The denotes the specifications which apply over the full operating temperature  
POWER REQUIREMENTS  
range, otherwise specifications are at TA = 25°C. (Note 5)  
SYMBOL  
PARAMETER  
CONDITIONS  
(Note 10)  
MIN  
2.7  
TYP  
MAX  
5.5  
UNITS  
V
Analog Positive Supply Voltage  
Output Positive Supply Voltage  
Positive Supply Current  
V
V
DD  
OV  
DD  
(Note 10)  
2.7  
5.5  
I
DD  
V
DD  
V
DD  
= OV = 5V, f = 400kHz  
2
0.83  
3
1.33  
mA  
mA  
DD  
S
= OV = 2.7V, f = 250kHz  
DD  
S
P
DISS  
Power Dissipation  
V
DD  
V
DD  
= OV = 5V, f = 400kHz  
10  
2.25  
15  
4
mW  
mW  
DD  
S
= OV = 2.7V, f = 250kHz  
DD  
S
I
Power Down Positive Supply Current  
Nap Mode  
Sleep Mode  
DDPD  
mA  
μA  
SHDN = Low, CS = Low  
SHDN = Low, CS = High  
0.5  
20  
Power Down Power Dissipation  
Nap Mode  
Sleep Mode  
V
= V = OV = 5V, f = 400kHz  
DD DD DD S  
mW  
mW  
SHDN = Low, CS = Low  
SHDN = Low, CS = High  
2.5  
0.1  
Power Down Power Dissipation  
Nap Mode  
Sleep Mode  
V
= V = OV = 3V, f = 250kHz  
DD DD DD S  
mW  
mW  
SHDN = Low, CS = Low  
SHDN = Low, CS = High  
1.5  
0.06  
TIMING CHARACTERISTICS The denotes the specifications which apply over the full operating temperature  
range, otherwise specifications are at TA = 25°C. (Note 5)  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
f
Maximum Sampling Frequency  
V
DD  
V
DD  
= 5.5V  
= 2.7V  
400  
250  
kHz  
kHz  
SAMPLE(MAX)  
Acquisition + Conversion  
Conversion Time  
V
V
= 5.5V  
= 2.7V  
2.5  
4.0  
μs  
μs  
DD  
DD  
t
V
DD  
V
DD  
= 5.5V  
= 2.7V  
2.0  
3.5  
μs  
μs  
CONV  
t
t
t
t
t
Acquisition Time  
(Note 13)  
150  
ns  
ns  
ns  
ns  
ACQ  
CS to RD Setup Time  
(Notes 9, 10)  
(Notes 9, 10)  
(Notes 9, 10)  
0
1
2
3
4
CS to CONVST Setup Time  
CS to SHDN Setup Time  
SHDN to CONVST Wake-Up Time  
10  
200  
Nap Mode (Note 10)  
Sleep Mode (Note 10)  
200  
10  
ns  
ms  
t
t
CONVST Low Time  
(Notes 10, 11)  
50  
ns  
5
6
CONVST to BUSY Delay  
C = 25pF  
L
10  
35  
ns  
ns  
60  
t
Data Ready Before BUSY  
20  
15  
ns  
ns  
7
t
t
t
Delay Between Conversions  
Wait Time RD After BUSY  
Data Access Time After RD  
(Note 10)  
50  
–5  
ns  
ns  
8
9
C = 25pF  
L
20  
25  
10  
35  
45  
ns  
ns  
10  
C = 100pF  
L
45  
60  
ns  
ns  
t
t
BUS Relinquish Time  
30  
35  
40  
ns  
ns  
ns  
11  
12  
0°C to 70°C  
40°C to 85°C  
RD Low Time  
t
ns  
10  
18523fa  
5

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