900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Maxwell Technologies

7820 Datasheet Preview

7820 Datasheet

Microprocessor Compatible 8-Bit ADC

No Preview Available !

7820
Microprocessor-compatible
8-Bit ADC
FEATURES:
• 1.36 µ s Conversion Time
• Built-in-Track-and-Hold Function
• Single +5 Volt Supply
• No External Clock Required
• Tri-State Output Buffered
• Total Ionization Dose:
- > 50 krads (Si), depending upon space mission.
• Excellent Single Event Effects
- SEL > 80 MeV/mg/cm2
• Package:
- 20 pin Rad-Pak DIP
Logic Diagram
DESCRIPTION:
The 7820 is a microprocessor compatible 8-bit Analog-to-Digi-
tal Converter with a 0V to +5V input supply range with a single
+5 Volt supply.
The 7820 incorporates internal sample-and-hold circuitry
which eliminates the need for an external S/H for signals with
slew rates less than 100 mV/µ s.
The 7820 was designed to be easiliy interfaced with micropro-
cessors, appearing as either a memory location or I/O port
without the need for external interfacing. All outputs are
latched and tri-state buffered.
Maxwell Technologies' patented RAD-PAK® packaging technol-
ogy incorporates radiation shielding in the microcircuit pack-
age. It eliminates the need for box shielding while providing
the required radiation shielding for a lifetime in orbit or space
mission. In a GEO orbit, the RAD-PAK®package provides
greater than 50 krad (Si) radiation dose tolerance. This prod-
uct is available with screening up to Class S.
09.09.03 Rev 3
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
All data sheets are subject to change without notice 1
©2003 Maxwell Technologies
All rights reserved.




Maxwell Technologies

7820 Datasheet Preview

7820 Datasheet

Microprocessor Compatible 8-Bit ADC

No Preview Available !

Microprocessor-compatible 8-Bit ADC
7820
TABLE 1. PIN DESCRIPTION
PIN SYMBOL
DESCRIPTION
1 VIN Analog Input Range: VREF(-) to VREF(+).
2 DB0 Data Output. Three State Output, bit 0 (LSB)
3 DB1 Data Output. Three State Output, bit 1
4 DB2 Data Output. Three State Output, bit 2
5 DB3 Data Output. Three State Output, bit 3
6 WR/RDY WRITE control input/READY status output.
7 Mode Mode Selection Input. It determines whether the device operates in the
WR-RD or RD mode. It is internally tied to GND through a 50 µ A current
source.
8 RD READ Input. RD must be low to access data from the part.
9 INT INTERUPT Output. INT going low indicates that the conversion is com-
plete INT returns high on rising the edge of RD or CS.
10 GND Ground
11 VREF- Lower limit of reference span. Range: GND < VREF(-) < VREF(+)
12 VREF+ Upper limit of reference span. Range: GND < VREF(-) < VREF(+) < VDD
13 CS Chip Select Input. CS, the decoded device address, must be low for RD
or WR to be recognized by the converter.
14 DB4 Data Output. Three State Output, bit 4
15 DB5 Data Output. Three State Output, bit 5
16 DB6 Data Output. Three State Output, bit 6
17 DB7 Data Output. Three State Output, bit 7 (MSB)
18 OFL Overflow Output. If the analog input is higher than (VREF(+) - 1/2LSB),
OFL will be low at the end of conversion. It is a non three state output
which can be used to cascade 2 or more devices to increase resolution.
19 NC No Connection.
20 VDD Power supply voltage, +5V
TABLE 2. 7820 ABSOLUTE MAXIMUM RATINGS1
PARAMETER
MIN MAX
VDD to GND
Digital Input Voltage to GND (Pins 6-80, 13)
Digital Output Voltage to GND (Pins 2-5, 9, 14-18)
VREF (+) to GND
VREF (-) to GND
-0
-0.3
0.3
0
VSS -0.3
7.0
VDD +0.3
VDD +0.3
VDD +0.3
VREF (+)
UNIT
V
V
V
V
V
09.09.03 Rev 3
All data sheets are subject to change without notice 2
©2003 Maxwell Technologies
All rights reserved.


Part Number 7820
Description Microprocessor Compatible 8-Bit ADC
Maker Maxwell Technologies
PDF Download

7820 Datasheet PDF






Similar Datasheet

1 782-2C-120A Electromechanical Relay
ETC
2 782-2C-12A Electromechanical Relay
ETC
3 782-2C-12D Electromechanical Relay
ETC
4 782-2C-240A Electromechanical Relay
ETC
5 782-2C-24A Electromechanical Relay
ETC
6 782-2C-24D Electromechanical Relay
ETC
7 7820 Microprocessor Compatible 8-Bit ADC
Maxwell Technologies
8 7820 RECTIFIER DIODE
Wetherill Associates
9 7820A CATV Optical Receiver
EMCORE





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy