Philips Semiconductors
Product data
CMOS 8-bit A/D converters
ADC0803/0804
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.
PIN CONFIGURATION
D
,
N PACKAGES
CS 1
RD 2
WR 3
CLK IN
4
20 V
CC
19 CLK R
18 D0
17 D1
16 D2
15 D3
14 D4
13 D5
12 D6
11 D7
TOP VIEW
INTR 5
V
IN
(+) 6
V
IN
(–) 7
A GND
8
FEATURES
V
REF
/2 9
D GND 10
•
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 0 V to V
CC
•
Single 5 V supply
•
Guaranteed specification with 1 MHz clock
SL00016
Figure 1. Pin configuration
APPLICATIONS
•
Transducer-to-microprocessor interface
•
Digital thermometer
•
Digitally-controlled thermostat
•
Microprocessor-based monitoring and control systems
ORDERING INFORMATION
DESCRIPTION
20-pin plastic small outline (SO) package
20-pin plastic small outline (SO) package
20-pin plastic dual in-line package (DIP)
20-pin plastic dual in-line package (DIP)
TEMPERATURE
RANGE
0 to 70
°C
–40 to 85
°C
0 to 70
°C
–40 to +85
°C
ORDER CODE
ADC0803CD, ADC0804CD
ADC0803LCD, ADC0804LCD
ADC0803CN, ADC0804CN
ADC0803LCN, ADC0804LCN
TOPSIDE MARKING
ADC0803-1CD, ADC0804-1CD
ADC0803-1LCD, ADC0804-1LCD
ADC0803-1CN, ADC0804-1CN
ADC0803-1LCN, ADC0804-1LCN
DWG #
SOT163-1
SOT163-1
SOT146-1
SOT146-1
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
CC
Supply voltage
Logic control input voltages
All other input voltages
T
amb
Operating temperature range
ADC0803LCD/ADC0804LCD
ADC0803LCN/ADC0804LCN
ADC0803CD/ADC0804CD
ADC0803CN/ADC0804CN
Storage temperature
Lead soldering temperature (10 seconds)
Maximum power
N package
D package
dissipation
1
T
amb
= 25
°C
(still air)
1690
1390
mW
mW
PARAMETER
CONDITIONS
RATING
6.5
–0.3 to +16
–0.3 to (V
CC
+0.3)
–40 to +85
–40 to +85
0 to +70
0 to +70
–65 to +150
230
UNIT
V
V
V
°C
°C
°C
°C
°C
°C
T
stg
T
sld
P
D
NOTE:
1. Derate above 25
°C,
at the following rates: N package at 13.5 mW/°C; D package at 11.1 mW/°C.
2002 Oct 17
2
PHILIPS [ NXP SEMICONDUCTORS ]
