adc1061cin National Semiconductor Corporation, adc1061cin Datasheet - Page 2

• Manufacturer Part Number: adc1061cin
• Description: 10-bit High-speed ?p-compatible A/d Converter With Track/hold Function
• Manufacturer: National Semiconductor Corporation

www.national.com
Simplified Block and Connection Diagrams
Ordering Information
Pin Descriptions
DV
AV
(1, 6)
INT (2)
S /H (3)
RD (4)
CS (5)
V
V
(7, 9)
V
GND (10)
REF−
REF+
IN
CC
DB0–DB9
CC
Symbol
(8)
(11-20)
,
,
These are the digital and analog positive supply voltage inputs. They should always be connected to the
same voltage source, but are brought out separately to allow for separate bypass capacitors. Each
supply pin should be bypassed with a 0.1 µF ceramic capacitor in parallel with a 10 µF tantalum
capacitor.
This is the active low interrupt output. INT goes low at the end of each conversion, and returns to a high
state following the rising edge of RD .
This is the Sample/Hold control input. When this pin is forced low, it causes the analog input signal to be
sampled and initiates a new conversion.
This is the active low Read control input. When this pin is low, any data present in the ADC1061’s output
registers will be placed on the data bus. In Mode 2, the Read signal must be low until INT goes low. Until
INT goes low, the data at the output pins will be incorrect.
This is the active low Chip Select control input. This pin enables the S /H and RD inputs.
These are the reference voltage inputs. They may be placed at any voltage between GND − 50 mV and
V
output code of 0, and an input voltage equal to V
This is the analog input pin. The impedance of the source should be less than 500
and conversion speed. To avoid damage to the ADC1061, V
the power supply voltages by more than 300 mV unless the drive current is limited. For accurate
conversions, V
This is the power supply ground pin. The ground pin should be connected to a “clean” ground reference
point.
These are the TRI-STATE output pins.
CC
+ 50 mV, but V
ADC1061CIN
ADC1061CIWM
IN
should not extend more than 50 mV beyond the supply voltages.
Industrial (−40˚C
REF+
must be greater than V
ADC1061CIN or ADC1061CIWM
See NS Package J20A,
Dual-In-Line Package
Order Number
M20B or N20A
Top View
T
A
2
85˚C)
Function
REF−
REF+
. An input voltage equal to V
(Continued)
DS010559-1
− 1LSB produces an output code of 1023.
Package
IN
M20B
N20A
should not be allowed to extend beyond
REF−
for best accuracy
produces an