DatasheetsPDF.com

A/D Converters. ADC0802 Datasheet

DatasheetsPDF.com

A/D Converters. ADC0802 Datasheet






ADC0802 Converters. Datasheet pdf. Equivalent




ADC0802 Converters. Datasheet pdf. Equivalent





Part

ADC0802

Description

A/D Converters



Feature


ADC0802, ADC0803 ADC0804 August 1997 8- Bit, MicroprocessorCompatible, A/D Conv erters Description The ADC0802 family a re CMOS 8-Bit, successive-approximation A/D converters which use a modified p otentiometric ladder and are designed t o operate with the 8080A control bus vi a three-state outputs. These converters appear to the processor as memory loca tions or I/O ports, .
Manufacture

Intersil Corporation

Datasheet
Download ADC0802 Datasheet


Intersil Corporation ADC0802

ADC0802; and hence no interfacing logic is requir ed. The differential analog voltage inp ut has good commonmode-rejection and pe rmits offsetting the analog zero-inputv oltage value. In addition, the voltage reference input can be adjusted to allo w encoding any smaller analog voltage s pan to the full 8 bits of resolution. Features • 80C48 and 80C80/85 Bus Com patible - No Interfa.


Intersil Corporation ADC0802

cing Logic Required • Conversion Time < 100µs • Easy Interface to Most Mic roprocessors • Will Operate in a “S tand Alone” Mode • Differential Ana log Voltage Inputs • Works with Bandg ap Voltage References • TTL Compatibl e Inputs and Outputs • On-Chip Clock Generator • 0V to 5V Analog Voltage I nput Range (Single + 5V Supply) • No Zero-Adjust Required Ordering Informatio.


Intersil Corporation ADC0802

n PART NUMBER ADC0802LCN ADC0802LCD ADC0 802LD ADC0803LCN ADC0803LCD ADC0803LCWM ADC0803LD ADC0804LCN ADC0804LCD ADC080 4LCWM ERROR ±1/2 LSB ±3/4 LSB ±1 LSB ±1/2 LSB ±3/4 LSB ±1 LSB ±1 LSB ± 1 LSB ±1 LSB ±1 LSB EXTERNAL CONDITI ONS VREF/2 = 2.500VDC (No Adjustments) TEMP. RANGE (oC) 0 to 70 -40 to 85 -55 to 125 PACKAGE 20 Ld PDIP 20 Ld CERDI P 20 Ld CERDIP 20 Ld PDIP 20.

Part

ADC0802

Description

A/D Converters



Feature


ADC0802, ADC0803 ADC0804 August 1997 8- Bit, MicroprocessorCompatible, A/D Conv erters Description The ADC0802 family a re CMOS 8-Bit, successive-approximation A/D converters which use a modified p otentiometric ladder and are designed t o operate with the 8080A control bus vi a three-state outputs. These converters appear to the processor as memory loca tions or I/O ports, .
Manufacture

Intersil Corporation

Datasheet
Download ADC0802 Datasheet




 ADC0802
August 1997
ADC0802, ADC0803
ADC0804
8-Bit, Microprocessor-
Compatible, A/D Converters
Features
Description
• 80C48 and 80C80/85 Bus Compatible - No Interfacing
Logic Required
• Conversion Time < 100µs
• Easy Interface to Most Microprocessors
• Will Operate in a “Stand Alone” Mode
• Differential Analog Voltage Inputs
• Works with Bandgap Voltage References
• TTL Compatible Inputs and Outputs
• On-Chip Clock Generator
• 0V to 5V Analog Voltage Input Range (Single + 5V Supply)
• No Zero-Adjust Required
The ADC0802 family are CMOS 8-Bit, successive-approxi-
mation A/D converters which use a modified potentiometric
ladder and are designed to operate with the 8080A control
bus via three-state outputs. These converters appear to the
processor as memory locations or I/O ports, and hence no
interfacing logic is required.
The differential analog voltage input has good common-
mode-rejection and permits offsetting the analog zero-input-
voltage value. In addition, the voltage reference input can be
adjusted to allow encoding any smaller analog voltage span
to the full 8 bits of resolution.
Ordering Information
PART NUMBER
ADC0802LCN
ADC0802LCD
ADC0802LD
ADC0803LCN
ADC0803LCD
ADC0803LCWM
ADC0803LD
ADC0804LCN
ADC0804LCD
ADC0804LCWM
ERROR
±1/2 LSB
±3/4 LSB
±1 LSB
±1/2 LSB
±3/4 LSB
±1 LSB
±1 LSB
±1 LSB
±1 LSB
±1 LSB
EXTERNAL CONDITIONS
VREF/2 = 2.500VDC (No Adjustments)
VREF/2 Adjusted for Correct Full Scale
Reading
VREF/2 = 2.500VDC (No Adjustments)
TEMP. RANGE (oC)
PACKAGE
0 to 70
20 Ld PDIP
-40 to 85
20 Ld CERDIP
-55 to 125
20 Ld CERDIP
0 to 70
20 Ld PDIP
-40 to 85
20 Ld CERDIP
-40 to 85
20 Ld SOIC
-55 to 125
20 Ld CERDIP
0 to 70
20 Ld PDIP
-40 to 85
20 Ld CERDIP
-40 to 85
20 Ld SOIC
PKG. NO
E20.3
F20.3
F20.3
E20.3
F20.3
M20.3
F20.3
E20.3
F20.3
M20.3
Pinout
Typical Application Schematic
ADC0802, ADC0803, ADC0804
(PDIP, CERDIP)
TOP VIEW
CS 1
RD 2
WR 3
CLK IN 4
INTR 5
VIN (+) 6
VIN (-) 7
AGND 8
VREF/2 9
DGND 10
20 V+ OR VREF
19 CLK R
18 DB0 (LSB)
17 DB1
16 DB2
15 DB3
14 DB4
13 DB5
12 DB6
11 DB7 (MSB)
ANY
µPROCESSOR
1 CS
2 RD
V+ 20
CLK R 19
+5V 150pF
3 WR CLK IN 4 10K
5 INTR
11 DB7
12 DB6
13 DB5
14 DB4
15 DB3
16 DB2
17 DB1
18 DB0
VIN (+)
VIN (-)
AGND
VREF/2
DGND
6
7
8
9
10
DIFF
INPUTS
VREF/2
8-BIT RESOLUTION
OVER ANY
DESIRED
ANALOG INPUT
VOLTAGE RANGE
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
6-5
File Number 3094.1




 ADC0802
Functional Diagram
ADC0802, ADC0803, ADC0804
2
RD
1
CS 3
WR
SET
“1” = RESET SHIFT REGISTER
Q “0” = BUSY AND RESET STATE
READ
RESET
CLK R
19
CLK IN
4
CLK OSC
10
DGND
CLK A
CLK
GEN CLKS
G1 RESET
START F/F
V+ 20
(VREF)
9
VREF/2
LADDER
AND
DECODER
INPUT PROTECTION
FOR ALL LOGIC INPUTS
INPUT
TO INTERNAL
CIRCUITS
BV = 30V
CLK
D
DFF1
Q
CLK B
MSB
D
SUCCESSIVE
APPROX.
REGISTER
AND LATCH
8-BIT
SHIFT
REGISTER
R
RESET
START
CONVERSION
IF RESET = “0”
INTR F/F
AGND 8
6
VIN (+)
7
VIN (-)
DAC
VOUT
V+
+
-
LSB
Q
COMP
-
+
CLK A
D
DFF2
Q
THREE-STATE
OUTPUT LATCHES
XFER
G2
MSB
LSB
11 12 13 14 15 16 17 18
DIGITAL OUTPUTS
THREE-STATE CONTROL
“1” = OUTPUT ENABLE
SET
CONV. COMPL.
8 X 1/f
Q
5
INTR
6-6




 ADC0802
ADC0802, ADC0803, ADC0804
Absolute Maximum Ratings
Thermal Information
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
Voltage at Any Input . . . . . . . . . . . . . . . . . . . . . . -0.3V to (V+ +0.3V)
Operating Conditions
Temperature Range
ADC0802/03LD. . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
ADC0802/03/04LCD . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
ADC0802/03/04LCN . . . . . . . . . . . . . . . . . . . . . . . . . .0oC to 70oC
ADC0803/04LCWM . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
Thermal Resistance (Typical, Note 1)
θJA (oC/W) θJC (oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . 125
N/A
CERDIP Package . . . . . . . . . . . . . . . . . .
80
20
SOIC Package . . . . . . . . . . . . . . . . . . . . . 120
N/A
Maximum Junction Temperature
Hermetic Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175oC
Plastic Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC
Maximum Lead Temperature (Soldering, 10s) . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications (Notes 1, 7)
PARAMETER
TEST CONDITIONS
MIN TYP
CONVERTER SPECIFICATIONS V+ = 5V, TA = 25oC and fCLK = 640kHz, Unless Otherwise Specified
Total Unadjusted Error
ADC0802
VREF/2 = 2.500V
--
ADC0803
VREF/2 Adjusted for Correct Full
Scale Reading
-
-
MAX
±1/2
±1/2
ADC0804
VREF/2 = 2.500V
- - ±1
VREF/2 Input Resistance
Input Resistance at Pin 9
1.0 1.3
-
Analog Input Voltage Range
(Note 2)
GND-0.05
- (V+) + 0.05
DC Common-Mode Rejection
Power Supply Sensitivity
Over Analog Input Voltage Range
V+ = 5V ±10% Over Allowed Input
Voltage Range
-
-
±1/16
±1/16
±1/8
±1/8
CONVERTER SPECIFICATIONS V+ = 5V, 0oC to 70oC and fCLK = 640kHz, Unless Otherwise Specified
Total Unadjusted Error
ADC0802
ADC0803
VREF/2 = 2.500V
VREF/2 Adjusted for Correct Full
Scale Reading
-
-
- ±1/2
- ±1/2
ADC0804
VREF/2 = 2.500V
- - ±1
VREF/2 Input Resistance
Input Resistance at Pin 9
1.0 1.3
-
Analog Input Voltage Range
(Note 2)
GND-0.05
- (V+) + 0.05
DC Common-Mode Rejection
Power Supply Sensitivity
Over Analog Input Voltage Range
V+ = 5V ±10% Over Allowed Input
Voltage Range
-
-
±1/8
±1/16
±1/4
±1/8
CONVERTER SPECIFICATIONS V+ = 5V, -25oC to 85oC and fCLK = 640kHz, Unless Otherwise Specified
Total Unadjusted Error
ADC0802
ADC0803
VREF/2 = 2.500V
VREF/2 Adjusted for Correct Full
Scale Reading
-
-
- ±3/4
- ±3/4
ADC0804
VREF/2 Input Resistance
Analog Input Voltage Range
DC Common-Mode Rejection
Power Supply Sensitivity
VREF/2 = 2.500V
Input Resistance at Pin 9
(Note 2)
Over Analog Input Voltage Range
V+ = 5V ±10% Over Allowed Input
Voltage Range
-
1.0
GND-0.05
-
-
-
1.3
-
±1/8
±1/16
±1
-
(V+) + 0.05
±1/4
±1/8
UNITS
LSB
LSB
LSB
k
V
LSB
LSB
LSB
LSB
LSB
k
V
LSB
LSB
LSB
LSB
LSB
k
V
LSB
LSB
6-7



Recommended third-party ADC0802 Datasheet






@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)