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ADC0802LD bảng dữ liệu(PDF) 4 Page - Intersil Corporation

tên linh kiện ADC0802LD
Giải thích chi tiết về linh kiện  8-Bit, Microprocessor- Compatible, A/D Converters
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6-8
CONVERTER SPECIFICATIONS V+ = 5V, -55oC to 125oC and fCLK = 640kHz, Unless Otherwise Specified
Total Unadjusted Error
ADC0802
VREF/2 = 2.500V
-
-
±1
LSB
ADC0803
VREF/2 Adjusted for Correct Full
Scale Reading
--
±1
LSB
VREF/2 Input Resistance
Input Resistance at Pin 9
1.0
1.3
-
k
Analog Input Voltage Range
(Note 2)
GND-0.05
-
(V+) + 0.05
V
DC Common-Mode Rejection
Over Analog Input Voltage Range
-
±1/8
±1/4
LSB
Power Supply Sensitivity
V+ = 5V
±10% Over Allowed Input
Voltage Range
-
±1/8
±1/4
LSB
AC TIMING SPECIFICATIONS V+ = 5V, and TA = 25
oC, Unless Otherwise Specified
Clock Frequency, fCLK
V+ = 6V (Note 3)
100
640
1280
kHz
V+ = 5V
100
640
800
kHz
Clock Periods per Conversion
(Note 4), tCONV
62
-
73
Clocks/Conv
Conversion Rate In Free-Running
Mode, CR
INTR tied to WR with CS = 0V,
fCLK = 640kHz
-
-
8888
Conv/s
Width of WR Input (Start Pulse
Width), tW(WR)I
CS = 0V (Note 5)
100
-
-
ns
Access Time (Delay from Falling
Edge of RD to Output Data Valid),
tACC
CL = 100pF (Use Bus Driver IC for
Larger CL)
-
135
200
ns
Three-State Control (Delay from
Rising Edge of RD to Hl-Z State),
t1H, t0H
CL = 10pF, RL= 10K
(See Three-State Test Circuits)
-
125
250
ns
Delay from Falling Edge of WR to
Reset of INTR, tWI, tRI
-
300
450
ns
Input Capacitance of Logic
Control Inputs, CIN
-5-
pF
Three-State Output Capacitance
(Data Buffers), COUT
-5-
pF
DC DIGITAL LEVELS AND DC SPECIFICATIONS V+ = 5V, and TMIN to TMAX, Unless Otherwise Specified
CONTROL INPUTS (Note 6)
Logic “1“ Input Voltage (Except
Pin 4 CLK IN), VINH
V+ = 5.25V
2.0
-
V+
V
Logic “0“ Input Voltage (Except
Pin 4 CLK IN), VINL
V+ = 4.75V
-
-
0.8
V
CLK IN (Pin 4) Positive Going
Threshold Voltage, V+CLK
2.7
3.1
3.5
V
CLK IN (Pin 4) Negative Going
Threshold Voltage, V-CLK
1.5
1.8
2.1
V
CLK IN (Pin 4) Hysteresis, VH
0.6
1.3
2.0
V
Logic “1” Input Current
(All Inputs), IINHI
VlN = 5V
-
0.005
1
µΑ
Logic “0” Input Current
(All Inputs), IINLO
VlN = 0V
-1
-0.005
-
µA
Supply Current (Includes Ladder
Current), I+
fCLK = 640kHz,TA = 25
oC
and CS = Hl
-
1.3
2.5
mA
DATA OUTPUTS AND INTR
Logic “0” Output Voltage, VOL
lO = 1.6mA, V+ = 4.75V
-
-
0.4
V
Electrical Specifications
(Notes 1, 7) (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ADC0802, ADC0803, ADC0804


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