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ADC0838B Scheda tecnica(PDF) 7 Page - Texas Instruments

Il numero della parte ADC0838B
Spiegazioni elettronici  A/D PERIPHERALS WITH SERIAL CONTROL
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
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ADC0838B Scheda tecnica(HTML) 7 Page - Texas Instruments

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IOZ
ADC0834A, ADC0838A, ADC0834B, ADC0838B
A/D PERIPHERALS WITH SERIAL CONTROL
SLAS007 – AUGUST 1985 – REVISED OCTOBER 1986
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
7
recommended operating conditions
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
6.3
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
fclock
Clock frequency
10
400
kHz
Clock duty cycle (see Note 3)
40
60
%
twH(CS) Pulse duration, CS high
220
ns
tsu
Setup time, CS low, SE low, or data valid before clock
350
ns
th
Hold time, data valid after clock
90
ns
TA
Operating free-air temperature
AC and BC suffixes
0
70
°C
TA
O erating free-air tem erature
AI and BI suffixes
–40
85
°C
NOTE 3: The clock duty cycle range ensures proper operation at all clock frequencies. If a clock frequency is used outside the recommended
duty cycle range, the minimum pulse duration (high or low) is 1
µs.
electrical
characteristics
over
recommended
range
of
operating
free-air
temperature,
VCC = V+ = 5 V, fclock = 250 kHz (unless otherwise noted)
digital section
PARAMETER
TEST CONDITIONS†
AC, BC SUFFIX
AI, BI SUFFIX
UNIT
PARAMETER
TEST CONDITIONS†
MIN
TYP‡
MAX
MIN
TYP‡
MAX
UNIT
VOH
High levl output voltage
VCC = 4.75 V,
IOH = – 360 µA
2.8
2.4
V
VOH
High-levl output voltage
VCC = 4.75 V,
IOH = – 10 µA
4.6
4.5
V
VOL
Low-levl output voltage
VCC = 5.25 V,
IOH = 1.6 mA
0.34
0.4
V
IIH
High-level input current
VIH = 5 V
0.005
1
0.005
1
µA
IIL
Low-level input current
VIL = 0
– 0.005
–1
– 0.005
–1
µA
IOH
High-level output (source) current
VOH = 0,
TA = 25°C
– 6.5
–14
– 6.5
–14
mA
IOL
Low-level output (sink) current
VOL = VCC,TA = 25°C
8
16
8
16
mA
High-impedance-state output
VO = 5 V,
TA = 25°C
0.01
3
0.01
3
µA
g
current (DO or SARS)
VO = 0,
TA = 25°C
– 0.01
–3
– 0.01
–3
µA
Ci
Input capacitance
5
pF
Co
Output capacitance
5
pF
† All parameters are measured under open-loop conditions with zero common-mode input voltage (unless otherwise specified).
‡ All typical values are at VCC = V+ = 5 V, TA = 25°C.


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