參數(shù)資料
型號(hào)： ADC0820BCV
廠(chǎng)商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： ADC
英文描述： 8-Bit High Speed レP Compatible A/D Converter with Track/Hold Function
中文描述： 1-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PQCC20
封裝： PLASTIC, CC-20
文件頁(yè)數(shù)： 1/14頁(yè)
文件大?。?/td> 107K
代理商： ADC0820BCV
Philips Semiconductors Linear Products
Product specification
ADC0820
8-Bit, high-speed,
μ
P-compatible A/D converter
with track/hold function
568
August 31, 1994
853-1631 13721
DESCRIPTION
By using a half-flash conversion technique, the 8-bit ADC0820
CMOS A/D offers a 1.5
μ
s conversion time while dissipating a
maximum 75mW of power. The half-flash technique consists of 31
comparators, a most significant 4-bit ADC and a least significant
4-bit ADC.
The input to the ADC0820 is tracked and held by the input sampling
circuitry, eliminating the need for an external sample-and-hold for
signals slewing at less than 100mV/
μ
s.
For ease of interface to microprocessors, the ADC0820 has been
designed to appear as a memory location or I/O port without the
need for external interfacing logic.
FEATURES
Built-in track-and-hold function
No missing codes
No external clocking
Single supply—5V
DC
Easy interface to all microprocessors, or operates stand-alone
Latched 3-State outputs
Logic inputs and outputs meet both MOS and TTL voltage level
specifications
Operates ratiometrically or with any reference value equal to or
less than V
DD
0V to 5V analog input voltage range with single 5V supply
No zero- or full-scale adjust required
Overflow output available for cascading
0.3
″
standard width 20-pin DIP
PIN CONFIGURATION
V
REF
(–)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
V
IN
DB0
DB1
DB2
DB3
WR/RDY
MODE
RD
INT
GND
V
DD
NC
OFL
DB7
DB6
DB5
DB4
CS
V
REF
(+)
TOP VIEW
D, F, N Packages
APPLICATIONS
Microprocessor-based monitoring and control systems
Transducer/
μ
P interface
Process control
Logic analyzers
Test and measurement
ORDERING INFORMATION
DESCRIPTION
20-Pin Plastic Dual In-Line Package (DIP)
20-Pin Plastic Small Outline (SO) package
TEMPERATURE RANGE
0 to +70
°
C
0 to +70
°
C
ORDER CODE
ADC0820CNEN
ADC0820CNED
DWG #
0408B
1021B
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