ADC1175CIMTC National Semiconductor, ADC1175CIMTC Datasheet - Page 3

• Manufacturer Part Number: ADC1175CIMTC
• Description: 8-Bit/ 20MHz/ 60mW A/D Converter
• Manufacturer: National Semiconductor

Pin Descriptions and Equivalent Circuits
Pin
No.
11, 13
3 thru
17
23
22
12
10
1
Symbol
D0-D7
DV
V
CLK
V
V
OE
RBS
RT
RB
DD
Equivalent Circuit
3
(Continued)
Analog Input that is the high (top) side of the
reference ladder of the ADC. Nominal range is 1.0V
to AV
V
for more information.
Analog Input that is the low (bottom) side of the
reference ladder of the ADC. Nominal range is 0V to
4.0V. Voltage on V
conversion range. Bypass well. See Section 2.0 for
more information.
Reference Bottom Bias with internal pull down
resistor. Short to V
ladder.
CMOS/TTL compatible Digital input that, when low,
enables the digital outputs of the ADC1175. When
high, the outputs are in a high impedance state.
CMOS/TTL compatible digital clock Input. V
sampled on the falling edge of CLK input.
Conversion data digital Output pins. D0 is the LSB,
D7 is the MSB. Valid data is output just after the
rising edge of the CLK input. These pins are enabled
by bringing the OE pin low.
Positive digital supply pin. Connect to a clean, quiet
voltage source of +5V. AV
a common source and be separately bypassed with a
10µF capacitor and a 0.1µF ceramic chip capacitor.
See Section 3.0 for more information.
IN
conversion range. Bypass well. See Section 2.0
DD
. Voltage on V
RB
RT
Description
and V
to self bias the reference
RT
and V
DD
RB
and DV
inputs define the V
RB
inputs define the
DD
should have
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IN
is
IN