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ADC081C021CIMM Datasheet(数据表) 8 Page - Texas Instruments

部件型号  ADC081C021CIMM
说明  ADC081C021/ADC081C027 I2C-Compatible, 8-Bit Analog-to-Digital Converter with Alert
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 

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ADC081C021, ADC081C027
SNAS447C – FEBRUARY 2008 – REVISED MARCH 2013
www.ti.com
A.C. and Timing Characteristics
The following specifications apply for VA = +2.7V to +5.5V. Boldface limits apply for TMIN ≤ TA ≤ TMAX and all other limits are
at TA = 25°C, unless otherwise specified.
Units
Symbol
Parameter
Conditions(1)
Typical(2)
Limits(1)(2)
(Limits)
CONVERSION RATE
Conversion Time
1
µs
fSCL = 100kHz
5.56
ksps
fSCL = 400kHz
22.2
ksps
fCONV
Conversion Rate
fSCL = 1.7MHz
94.4
ksps
fSCL = 3.4MHz
188.9
ksps
DIGITAL TIMING SPECS (SCL, SDA)
Standard Mode
100
kHz (max)
Fast Mode
400
kHz (max)
fSCL
Serial Clock Frequency
High Speed Mode, Cb = 100pF
3.4
MHz (max)
High Speed Mode, Cb = 400pF
1.7
MHz (max)
Standard Mode
4.7
us (min)
Fast Mode
1.3
us (min)
tLOW
SCL Low Time
High Speed Mode, Cb = 100pF
160
ns (min)
High Speed Mode, Cb = 400pF
320
ns (min)
Standard Mode
4.0
us (min)
Fast Mode
0.6
us (min)
tHIGH
SCL High Time
High Speed Mode, Cb = 100pF
60
ns (min)
High Speed Mode, Cb = 400pF
120
ns (min)
Standard Mode
250
ns (min)
tSU;DAT
Data Setup Time
Fast Mode
100
ns (min)
High Speed Mode
10
ns (min)
0
us (min)
Standard Mode(3)
3.45
us (max)
0
us (min)
Fast Mode(3)
0.9
us (max)
tHD;DAT
Data Hold Time
0
ns (min)
High Speed Mode, Cb = 100pF
70
ns (max)
0
ns (min)
High Speed Mode, Cb = 400pF
150
ns (max)
Standard Mode
4.7
us (min)
Setup time for a start or a repeated
tSU;STA
Fast Mode
0.6
us (min)
start condition
High Speed Mode
160
ns (min)
Standard Mode
4.0
us (min)
Hold time for a start or a repeated start
tHD;STA
Fast Mode
0.6
us (min)
condition
High Speed Mode
160
ns (min)
Bus free time between a stop and start
Standard Mode
4.7
us (min)
tBUF
condition
Fast Mode
1.3
us (min)
Standard Mode
4.0
us (min)
tSU;STO
Setup time for a stop condition
Fast Mode
0.6
us (min)
High Speed Mode
160
ns (min)
Standard Mode
1000
ns (max)
20+0.1Cb
ns (min)
Fast Mode
300
ns (max)
trDA
Rise time of SDA signal
10
ns (min)
High Speed Mode, Cb = 100pF
80
ns (max)
20
ns (min)
High Speed Mode, Cb = 400pF
160
ns (max)
(1)
Cb refers to the capacitance of one bus line. Cb is expressed in pF units.
(2)
Typical figures are at TJ = 25°C, and represent most likely parametric norms. Test limits are specified to AOQL (Average Outgoing
Quality Level).
(3)
The ADC081C021 will provide a minimum data hold time of 300ns to comply with the I2C Specification.
8
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Copyright © 2008–2013, Texas Instruments Incorporated
Product Folder Links: ADC081C021 ADC081C027




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