ADC0820 View Datasheet(PDF) - Philips Electronics
Part Name
Description
View to exact match
ADC0820 Datasheet PDF : 14 Pages
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Philips Semiconductors Linear Products
8-Bit, high-speed, µP-compatible A/D converter with
track/hold function
Product specification
ADC0820
PIN DESCRIPTION (Continued)
PIN NO SYMBOL
DESCRIPTION
RD Mode
INT going Low indicates that the conversion is completed and the data result is in the output latch. INT is reset by
the rising edge of RD or CS (see Figure 1).
10 GND
Ground
11
VREF(-)
The bottom of resistor ladder, voltage range: GND≤VREF(-)≤VREF(+)
12
VREF(+)
The top of resistor ladder, voltage range: VREF(-)≤VREF(+)≤VDD.
13 CS
CS must be Low in order for the RD or WR to be recognized by the converter.
14 DB4
3-State data output—Bit 4
15 DB5
3-State data output—Bit 5
16 DB6
3-State data output—Bit 6
17 DB7
3-State data output—Bit 7 (MSB)
18 OFL
Overflow output—if the analog input is higher than the VREF(+)- LSB, OFL will be low at the end of conversion. It can
be used to cascade 2 or more devices to have more resolution (9, 10-bit). It is always active and never becomes
3-state.
19 NC
No connection
20
VDD
Power supply voltage
ABSOLUTE MAXIMUM RATINGS1, 2
SYMBOL
PARAMETER
RATING
VDD
TSTG
PD
Supply voltage
Logic control inputs
Voltage at other inputs and output
Storage temperature range
Maximum power dissipation3
TA=25°C(still-air)
N package
7
-0.2 to VDD+0.2
-0.2 to VDD+0.2
-65 to +150
1690
D package
1390
TSOLD
TA
Lead temperature (soldering, 10sec)
Operating ambient temperature range
ADC0820CNEN/CNED
300
TMIN≤TA≤TMAX
0 to +70
NOTES:
1. Absolute Maximum Ratings are those values beyond which the life of the device may be impaired.
2. All voltages are measured with respect to GND, unless otherwise specified.
3. Derate above 25°C at the following rates:
N package at 13.5mW/°C
D package at 11.1mW/°C
UNIT
V
V
V
°C
mW
mW
°C
°C
August 31, 1994
570
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