参数资料
型号: ADC10030
厂商: National Semiconductor Corporation
英文描述: 10-Bit, 30 MSPS, 125 mW A/D Converter with Internal Sample and Hold
中文描述: 10位,30 MSPS的,125毫瓦的A / D内部采样与保持器
文件页数: 3/17页
文件大小: 417K
代理商: ADC10030
Pin Descriptions and Equivalent Circuits
Pin
No.
Symbol
Equivalent Circuit
Description
30
V
IN
Analog Input signal to be converted. Conversion
range is V
REF
+
S to V
REF
S.
31
V
REF
+
F
Analog input that goes to the high side of the
reference ladder of the ADC. This voltage should
force V
REF
+
S to be in the range of 2.6V to 3.8V.
Analog output used to sense the voltage at the top
of the ADC reference ladder.
Analog input that goes to the low side of the
reference ladder of the ADC. This voltage should
force V
REF
S to be in the range of 1.7V to 2.8V.
Analog output used to sense the voltage at the
bottom of the ADC reference ladder.
32
V
REF
+
S
2
V
REF
F
1
V
REF
S
9
CLK
Converter digital clock input. V
IN
is sampled on the
falling edge of CLK input.
8
PD
Power Down input. When this pin is high, the
converter is in the Power Down mode and the data
output pins are in a high impedance state.
26
OE
Output Enable pin. When this pin and the PD pin
are low, the output data pins are active. When this
pin or the PD pin is high, the data output pins are in
a high impedance state.
14
thru
19
and
22
thru
25
D0–D9
Digital Output pins providing the 10-bit conversion
results. D0 is the LSB, D9 is the MSB. Data is
acquired on the falling edge of the CLK input and
valid data is present 2.0 clock cycles plus t
OD
later.
3, 7,
28
V
A
Positive analog supply pins. These pins should be
connected to a clean, quiet voltage source of +5V.
V
A
and V
D
should have a common supply and be
separately bypassed with 10 μF to 50 μF capacitors
in parallel with 0.1 μF capacitors.
Positive digital supply pins. These pins should be
connected to a clean, quiet voltage source of +5V.
V
A
and V
D
should have a common supply and be
separately bypassed with 10 μF to 50 μF capacitors
in parallel with 0.1 μF capacitors.
5, 10
V
D
A
www.national.com
3
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