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ADC10738 데이터시트(PDF) 7 Page - Texas Instruments

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부품명 ADC10738
상세설명  10-Bit Plus Sign Serial I/O A/D Converters with Mux, Sample/Hold and Reference
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ADC10731, ADC10732, ADC10734, ADC10738
www.ti.com
SNAS081D – MAY 1999 – REVISED MARCH 2013
Electrical Characteristics (continued)
The following specifications apply for V
+ = AV+ = DV+ = +5.0 V
DC, VREF+ = 2.5 VDC, VREF− = GND, VIN− = 2.5V for Signed
Characteristics, VIN− = GND for Unsigned Characteristics and fCLK = 2.5 MHz unless otherwise specified. Boldface limits
apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = +25°C.
(1)(2)(3)(4)
Units
Parameter
Test Conditions
Typ(5)
Limits(6)
(Limits)
DIGITAL AND DC CHARACTERISTICS
VIN(1)
Logical “1” Input Voltage
V+ = 5.5V
2.0
V (min)
VIN(0)
Logical “0” Input Voltage
V+ = 4.5V
0.8
V (max)
IIN(1)
Logical “1” Input Current
VIN = 5.0V
0.005
+2.5
μA (max)
IIN(0)
Logical “0” Input Current
VIN = 0V
−0.005
−2.5
μA (max)
V+ = 4.5V, IOUT = −360
2.4
V (min)
μA
VOUT(1)
Logical “1” Output Voltage
V+ = 4.5V, IOUT = −10 μA
4.5
V (min)
VOUT(0)
Logical “0” Output Voltage
V+ = 4.5V, IOUT = 1.6 mA
0.4
V (min)
VOUT = 0V
−0.1
−3.0
μA (max)
IOUT
TRI-STATE Output Current
VOUT = 5V
+0.1
+3.0
μA (max)
+ISC
Output Short Circuit Source Current
VOUT = 0V, V
+ = 4.5V
−30
−15
mA(min)
−ISC
Output Short Circuit Sink Current
VOUT= V
+ = 4.5V
30
15
mA (min)
CS = HIGH, Power Up
0.9
1.3
mA (max)
CS = HIGH, Power Down
0.2
0.4
mA (max)
ID+
Digital Supply Current (10)
CS = HIGH, Power Down,
0.5
50
μA (max)
and CLK Off
CS = HIGH, Power Up
2.7
6.0
mA (max)
IA+
Analog Supply Current (10)
CS = HIGH, Power Down
3
15
μA (max)
VREF+ = +2.5V and
IREF
Reference Input Current
0.6
mA (max)
CS = HIGH, Power Up
AC CHARACTERISTICS
3.0
2.5
MHz
fCLK
Clock Frequency
5
(max)
kHz (min)
40
%(min)
Clock Duty Cycle
60
%(max)
Clock
12
12
Cycles
tC
Conversion Time
5
5
μs (max)
Clock
4.5
4.5
Cycles
tA
Acquisition Time
2
2
μs (max)
14
30
ns (min)
CS Set-Up Time, Set-Up Time from Falling Edge of CS to
tSCS
(1 tCLK
(1 tCLK
Rising Edge of Clock
(max)
− 14 ns)
− 30 ns)
DI Set-Up Time, Set-Up Time from Data Valid on DI to
tSDI
16
25
ns (min)
Rising Edge of Clock
DI Hold Time, Hold Time of DI Data from Rising Edge of
tHDI
2
25
ns (min)
Clock to Data not Valid on DI
DO Access Time from Rising Edge of CLK When CS is
tAT
30
50
ns (min)
“Low” during a Conversion
DO or SARS Access Time from CS , Delay from Falling
tAC
30
70
ns (max)
Edge of CS to Data Valid on DO or SARS
Delay from Rising Edge of Clock to Falling Edge of SARS
tDSARS
100
200
ns (max)
when CS is “Low”
(10) The voltage applied to the digital inputs will affect the current drain during power down. These devices are tested with CMOS logic
levels (logic Low = 0V and logic High = 5V). TTL levels increase the current, during power down, to about 300
μA.
Copyright © 1999–2013, Texas Instruments Incorporated
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