7820
Microprocessor-compatible 8-Bit ADC
1
TABLE 2. 7820 ABSOLUTE MAXIMUM RATINGS
PARAMETER
MIN
MAX
UNIT
V to GND
-0.3
-55
-65
--
V
DD +0.3
125
150
450
6
V
°C
IN
Operating Temperature
Storage Temperature Range
Power Dissipation to 75°C
Derates above +75°C
°C
mW
--
mW/°C
1. CAUTION: ESD (electrostatic discharge) sensitive device. The digital control inputs are diode protected; how-
ever, permanent damage may occur on unconnected devices subject to high energy electrostatic fields. Unused
devices must be stored in conductive foam or shunts. The protective foam should be discharged to the destina-
tion socket before devices are inserted.
TABLE 3. 7820 DC ELECTRICAL CHARACTERISTICS
(VDD = +5V; VREF(+) = +5V; VREF(-) = GND = 0V, UNLESS OTHERWISE SPECIFIED) (RD MODE (PIN 7 = 0V))
(TA = -55 TO 125 °C UNLESS OTHERWISE SPECIFIED)
PARAMETER
TEST CONDITIONS
SUBGROUPS
MIN
TYP
MAX
UNIT
Accuracy
Resolution
--
--
--
8
--
--
--
--
--
--
±1.0
8
Bits
LSB
Bits
Total Unadjusted Error1
Minimum Resolution for which No
Missing Codes are Guaranteed
Reference Input
Input Resisitance
--
--
--
1, 2, 3
1, 2, 3
1, 2, 3
1.0
--
--
--
4.0
kΩ
V
VREF (+) Input Voltage Range
VREF(-)
V
DD
VREF (-) Input Voltage Range
GND
V
REF(+)
V
Analog Input
Input Voltage Range
Input Leakage Current
Input Capacitance2
Logic Inputs
--
--
--
1, 2, 3
1, 2, 3
1, 2, 3
V
REF(-)
--
--
V
REF(+)
V
µA
pF
--
±3
--
45
--
CS, WR, RD
V
--
--
--
--
--
--
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
2.4
--
--
--
--
--
--
5
--
0.8
1
V
V
INH
V
INH
IINH(CS, RD)
--
µA
µA
µA
pF
IINH(WR)
--
3
I (WR)
--
-1
8
INL
Input Capacitance2
--
09.09.03 Rev 3
All data sheets are subject to change without notice
3
©2003 Maxwell Technologies
All rights reserved.
MAXWELL [ MAXWELL TECHNOLOGIES ]
