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ADC0831 Просмотр технического описания (PDF) - Texas Instruments

Номер в каталогеADC0831 TI
Texas Instruments TI
Компоненты Описание8-Bit Serial I/O A/D Converters with Multiplexer Options
ADC0831 Datasheet PDF : 41 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ADC0831-N, ADC0832-N, ADC0834-N, ADC0838-N
SNAS531B – AUGUST 1999 – REVISED MARCH 2013
AC Characteristics
The following specifications apply for VCC = 5V, tr = tf = 20 ns and 25°C unless otherwise specified.
Parameter
Conditions
Typ (1)
Tested
Limit (2)
Min
10
fCLK, Clock Frequency
Max
tC, Conversion Time
Not including MUX Addressing Time
8
Clock Duty Cycle(4)
Min
Max
tSET-UP, CS Falling Edge or Data Input Valid
to CLK Rising Edge
tHOLD, Data Input Valid after CLK Rising
Edge
CL=100 pF
tpd1, tpd0—CLK Falling Edge to Output Data
Valid (5)
Data MSB First
650
Data LSB First
250
t1H, t0H,—Rising Edge of CS to Data Output
CL=10 pF, RL=10k (See TRI-STATE
Test Circuits and Waveforms)
125
and SARS Hi–Z
CL=100 pf, RL=2k
500
CIN, Capacitance of Logic Input
5
COUT, Capacitance of Logic Outputs
5
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Design
Limit (3)
400
40
60
250
90
Limit
Units
kHz
kHz
1/fCLK
%
%
ns
ns
1500
ns
600
ns
250
ns
ns
pF
pF
(1) Typicals are at 25°C and represent most likely parametric norm.
(2) Tested limits are ensured to TI's AOQL (Average Outgoing Quality Level).
(3) Ensured but not 100% production tested. These limits are not used to calculate outgoing quality levels.
(4) A 40% to 60% clock duty cycle range insures proper operation at all clock frequencies. In the case that an available clock has a duty
cycle outside of these limits, the minimum, time the clock is high or the minimum time the clock is low must be at least 1 μs. The
maximum time the clock can be high is 60 μs. The clock can be stopped when low so long as the analog input voltage remains stable.
(5) Since data, MSB first, is the output of the comparator used in the successive approximation loop, an additional delay is built in (see
ADC0838-N Functional Block Diagram) to allow for comparator response time.
6
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Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: ADC0831-N ADC0832-N ADC0834-N ADC0838-N
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