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PDF ADC0808CCV Data sheet ( Hoja de datos )
| Número de pieza | ADC0808CCV | |
| Descripción | P Compatible 8-Bit A/D Converter with 8-Channel Multiplexer | |
| Fabricantes | Micro Linear Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ADC0808CCV (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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May 1997
ML2258*
µP Compatible 8-Bit A/D Converter
with 8-Channel Multiplexer
GENERAL DESCRIPTION
The ML2258 combines an 8-bit A/D converter, 8-channel
analog multiplexer, and a microprocessor compatible 8-
bit parallel interface and control logic in a single
monolithic device.
Easy interface to microprocessors is provided by the
latched and decoded multiplexer address inputs and
latched three-state outputs.
The device is suitable for a wide range of applications
from process and machine control to consumer,
automotive, and telecommunication applications.
The ML2258 is an enhanced, pin-compatible, second
source for the industry standard ADC0808/ADC0809. The
ML2258 enhancements are faster conversion time, true
sample and hold function, superior power supply
rejection, wider reference range, and a double buffered
data bus as well as faster digital timing. All parameters
are guaranteed over temperature with a power supply
voltage of 5V ±10%.
BLOCK DIAGRAM
FEATURES
s Conversion time
6.6µs
s Total unadjusted error
±1/2LSB or ±1LSB
s No missing codes
s Sample and hold
390ns acquisition
s Capable of digitizing a 5V, 50kHz sine wave
s 8-input multiplexer
s 0V to 5V analog input range with single 5V
power supply
s Operates ratiometrically or with up to 5V
voltage reference
s No zero-or full-scale adjust required
s Analog input protection
25mA per input min
s Low power dissipation
3mA max
s TTL and CMOS compatible digital inputs and outputs
s Standard 28-pin DIP or surface mount PCC
s Superior pin compatible replacement for ADC0808 and
ADC0809
* Some Packages Are End Of Life As Of August 1, 2000
START CLOCK
IN0
IN1
IN2
IN3 8-CHANNEL
MULTIPLEXER
IN4
IN5
IN6
IN7
ADDR0
ADDR1
ADDR2
ADDRESS
LATCH ENABLE
ADDRESS
LATCH
AND
DECODER
A/D WITH
SAMPLE HOLD
CONTROL & TIMING
END OF CONVERSION
(INTERRUPT)
COMPARATOR
S.A.R.
SWITCH TREE
THREE
STATE
OUTPUT
LATCH
BUFFER
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
VCC GND +VREF
CAPACITOR/
RESISTOR
ARRAY
–VREF OUTPUT
ENABLE
1
1 page  
ML2258
t1H,tH1
DATA
OUTPUT
CL
10K
t0H,tH0
VCC
DATA
OUTPUT
10K
CL
t1H,CL = 10pF
OUTPUT
ENABLE
OUTPUT
VCC
GND
VOH
GND
tf
50%
10%
90%
t1H
90%
t0H,CL = 10pF
OUTPUT
ENABLE
OUTPUT
VCC
GND
VCC
VOL
tf
50%
10%
90%
t0H
10%
tH1,CL = 50pF
tr
90%
50%
10%
t0H
50%
tH0,CL = 50pF
tr
90%
50%
10%
tH0
50%
Figure 1. High Impedance Test Circuits and Waveforms
TYPICAL PERFORMANCE CURVES
1.0
0.75
VCC = 5V
VREF = 5V
0.5
0.25
–55 C
25 C
125 C
0
0.01
0.1 1.0
CLOCK FREQUENCY (MHz)
10
Figure 2. Linearity Error vs fCLK
5
5 Page 
PHYSICAL DIMENSIONS inches (millimeters)
ML2258
28
PIN 1 ID
1
0.180 MAX
(4.57 MAX)
0.125 - 0.135
(3.18 - 3.43)
Package: P28N
28-Pin Narrow PDIP
1.355 - 1.365
(34.42 - 34.67)
0.280 - 0.296 0.299 - 0.325
(7.11 - 7.52) (7.60 - 8.26)
0.045 - 0.055
(1.14 - 1.40)
0.100 BSC
(2.54 BSC)
0.020 MIN
(0.51 MIN)
0.015 - 0.021
(0.38 - 0.53)
SEATING PLANE
0º - 15º
0.008 - 0.012
(0.20 - 0.31)
0.485 - 0.495
(12.32 - 12.57)
0.450 - 0.456
(11.43 - 11.58)
1
Package: Q28
28-Pin PLCC
0.042 - 0.048
(1.07 - 1.22) 8
PIN 1 ID
22
0.450 - 0.456
(11.43 - 11.58)
0.485 - 0.495
(12.32 - 12.57)
0.042 - 0.056
(1.07 - 1.42)
0.025 - 0.045
(0.63 - 1.14)
(RADIUS)
0.300 BSC
(7.62 BSC)
0.390 - 0.430
(9.90 - 10.92)
15
0.050 BSC
(1.27 BSC)
0.026 - 0.032
(0.66 - 0.81)
0.165 - 0.180
(4.06 - 4.57)
0.148 - 0.156
(3.76 - 3.96)
0.009 - 0.011
(0.23 - 0.28)
0.099 - 0.110
(2.51 - 2.79)
0.013 - 0.021
(0.33 - 0.53) SEATING PLANE
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ADC0808CCV.PDF ] | |
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