Intel 8253 - Page 286

Philips Semiconductors Linear Products Product specification
ADC0803/4-1CMOS 8-bit A/D converters
555
August 31, 1994 853-0034 13721
DESCRIPTION
The ADC0803 family is a series of three CMOS 8-bit successive
approximation A/D converters using a resistive ladder and
capacitive array together with an auto-zero comparator. These
converters are designed to operate with microprocessor-controlled
buses using a minimum of external circuitry. The 3-State output data
lines can be connected directly to the data bus.
The differential analog voltage input allows for increased
common-mode rejection and provides a means to adjust the
zero-scale offset. Additionally, the voltage reference input provides a
means of encoding small analog voltages to the full 8 bits of
resolution.
FEATURES
• Compatible with most microprocessors
• Differential inputs
• 3-State outputs
• Logic levels TTL and MOS compatible
• Can be used with internal or external clock
• Analog input range 0V to V
CC
• Single 5V supply
• Guaranteed specification with 1MHz clock
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
D
1
,
N PACKAGES
CS
RD
WR
INTR
CLK IN
V
IN
(+)
V
IN
(–)
A GND
V
REF
/2
D GND
V
CC
CLK R
D0
D1
D2
D3
D4
D5
D6
D7
TOP VIEW
NOTE:
SOL — Released in large SO package only.
APPLICATIONS
• Transducer-to-microprocessor interface
• Digital thermometer
• Digitally-controlled thermostat
• Microprocessor-based monitoring and control systems
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE ORDER CODE DWG #
20-Pin Plastic Dual In-Line Package (DIP) -40 to +85°C ADC0803/04-1 LCN 0408B
20-Pin Plastic Dual In-Line Package (DIP) 0 to 70°C ADC0803/04-1 CN 0408B
20-Pin Plastic Small Outline (SO) Package 0 to 70°C ADC0803/04-1 CD 1021B
20-Pin Plastic Small Outline (SO) Package -40 to 85°C ADC0803/04-1 LCD 1021B
ABSOLUTE MAXIMUM RATINGS
SYMBOL PARAMETER RATING UNIT
V
CC
Supply voltage 6.5 V
Logic control input voltages -0.3 to +16 V
All other input voltages
-0.3 to
(V
CC
+0.3)
V
T
A
Operating temperature range
ADC0803/04-1 LCD -40 to +85 °C
ADC0803/04-1 LCN -40 to +85 °C
ADC0803/04-1 CD 0 to +70 °C
ADC0803/04-1 CN 0 to +70 °C
T
STG
Storage temperature -65 to +150 °C
T
SOLD
Lead soldering temperature (10 seconds) 300 °C
P
D
Maximum power dissipation
T
A
=25°C (still air)
1
N package 1690 mW
D package 1390 mW
NOTES:
1. Derate above 25°C, at the following rates: N package at 13.5mW/°C; D package at 11.1mW/°C