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参数资料
| 型号： | ADC0804 |
| 厂商： | Intersil, Corp. |
| 元件分类： | 串行ADC |
| 英文描述： | 8-Bit, Microprocessor-Compatible A/D Converters |
| 中文描述： | 8位微处理器兼容的A/D转换器 |
| 文件页数： | 4/16页 |
| 文件大小： | 250K |
| 代理商： | ADC0804 |
6-8
CONVERTER SPECIFICATIONS
V+ = 5V, -55
o
C to 125
o
C and f
CLK
= 640kHz, Unless Otherwise Specified
Total Unadjusted Error
ADC0802
V
REF
/2 = 2.500V
ADC0803
V
REF
/2 Adjusted for Correct Full
Scale Reading
-
-
±
1
±
1
LSB
-
-
LSB
V
REF
/2 Input Resistance
Analog Input Voltage Range
Input Resistance at Pin 9
1.0
1.3
-
k
(Note 2)
GND-0.05
-
(V+) + 0.05
±
1
/
4
±
1
/
4
V
DC Common-Mode Rejection
Over Analog Input Voltage Range
-
±
1
/
8
±
1
/
8
LSB
Power Supply Sensitivity
V+ = 5V
±
10% Over Allowed Input
Voltage Range
-
LSB
AC TIMING SPECIFICATIONS
V+ = 5V, and T
A
=
25
o
C, Unless Otherwise Specified
Clock Frequency, f
CLK
V+ = 6V (Note 3)
V+ = 5V
100
640
1280
kHz
100
640
800
kHz
Clock Periods per Conversion
(Note 4), t
CONV
Conversion Rate In Free-Running
Mode, CR
62
-
73
Clocks/Conv
INTR tied to WR with CS = 0V,
f
CLK
= 640kHz
CS = 0V (Note 5)
-
-
8888
Conv/s
Width of WR Input (Start Pulse
Width), t
W(WR)I
Access Time (Delay from Falling
Edge of RD to Output Data Valid),
t
ACC
Three-State Control (Delay from
Rising Edge of RD to Hl-Z State),
t
1H
, t
0H
Delay from Falling Edge of WR to
Reset of INTR, t
WI
, t
RI
Input Capacitance of Logic
Control Inputs, C
IN
Three-State Output Capacitance
(Data Buffers), C
OUT
DC DIGITAL LEVELS AND DC SPECIFICATIONS
V+ = 5V, and T
MIN
to T
MAX
, Unless Otherwise Specified
CONTROL INPUTS
(Note 6)
100
-
-
ns
C
L
= 100pF (Use Bus Driver IC for
Larger C
L)
-
135
200
ns
C
L
= 10pF, R
L
= 10K
(See Three-State Test Circuits)
-
125
250
ns
-
300
450
ns
-
5
-
pF
-
5
-
pF
Logic “1“ Input Voltage (Except
Pin 4 CLK IN), V
INH
Logic “0“ Input Voltage (Except
Pin 4 CLK IN), V
INL
CLK IN (Pin 4) Positive Going
Threshold Voltage, V+
CLK
CLK IN (Pin 4) Negative Going
Threshold Voltage, V-
CLK
CLK IN (Pin 4) Hysteresis, V
H
Logic “1” Input Current
(All Inputs), I
INHI
Logic “0” Input Current
(All Inputs), I
INLO
Supply Current (Includes Ladder
Current), I+
V+ = 5.25V
2.0
-
V+
V
V+ = 4.75V
-
-
0.8
V
2.7
3.1
3.5
V
1.5
1.8
2.1
V
0.6
1.3
2.0
V
V
lN
= 5V
-
0.005
1
μΑ
V
lN
= 0V
-1
-0.005
-
μ
A
f
CLK
= 640kHz,T
A
= 25
o
C
and CS = Hl
-
1.3
2.5
mA
DATA OUTPUTS AND INTR
Logic “0” Output Voltage, V
OL
l
O
= 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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