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PDF STV8438CV Data sheet ( Hoja de datos )
| Número de pieza | STV8438CV | |
| Descripción | TRIPLE 8-BIT D/A CONVERTER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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STV8438CV
TRIPLE 8-BIT D/A CONVERTER
s 3 CHANNEL D/A CONVERTER
s 8-BIT RESOLUTION
s 70 MEGASAMPLES PER SECOND CONVER-
SION RATE
s AUXILIARY ANALOG R, G, B, SWITCHING
CAPABILITIES
s SINGLE VOLTAGE +5V OPERATION
s ON-CHIP VOLTAGE REFERENCE
s VOLTAGE OUTPUT BUFFER AMPLIFIER
s TTL COMPATIBLE DIGITAL INPUTS
s BINARY INPUT ON ALL CHANNELS
s 2’s COMPLEMENT INPUT CAPABILITY ON
TWO CHANNELS
s MONOLITHIC BIPOLAR
s 850mW POWER DISSIPATION
s OPERATING TEMPERATURE RANGE 0oC TO
+70oC
The STV8438CV contains three 8-bit D/A con-
verters with a high performance on-chip voltage
reference.
Internal analog multiplexing between the signals
from the internal D/A converter and from auxiliary
analog R, G, B signals is provided. Either binary or
2’s complement inputs are available for two of the
three channels.
This device is particularly recommended for use in
video processing applications with the capability of
70Msps data conversion rate with excellent
linearity.
DESCRIPTION
This Digital-to-Analogconverteris a monolithicvolt-
age output converter which can accept TTL-level
digital input voltages.
PIN CONNECTIONS
PQFP 44
(Plastic Package)
ORDER CODE : STV8438CV
R0
VCC (D)
GND (D)
VCC (A)
GND (A)
NC
R OUT
R AUX
GND (A)
G OUT
G AUX
11 10 9 8 7 6 5 4 3 2 1
12 44
13 43
14 42
15 41
16 40
17 39
18 38
19 37
20 36
21 35
22 34
23 24 25 26 27 28 29 30 31 32 33
G4
G5
G6
G7
COM
NC
CLK
R/C
B0
B1
B2
July 1995
1/9
1 page  
STV8438CV
AC ELECTRICAL CHARACTERISTICS (temperature 0 to 70oC, VCC ±5%) (continued)
Symbol
Parameter
Min. Typ.
ANALOG OUTPUTS FROM ANALOG INPUTS
G
BNa
Voltage Gain at f=1MHz (input voltage 0.7VPP)
Bandwidth (-3dB)
Slew-rate (input pulse 0.7VPP)
Harmonic Distortion rate at 1MHz
2.0
100
120 150
DIGITAL INPUTS
VIN Input Voltage High Level
VIL Input Voltage Low Level
IIH Input Current High Level
IIL Input Current Low Level
2
-500
SWITCHING CHARACTERISTICS
FCK
tCKR
tCKF
tSU
tHOLD
tD
Clock Rate
Clock Duty-cycle Rate
Clock Rise-time (10% - 90%)
Clock Fall-time (90% - 10%)
Data Set-up Time to CLK
Data Hold-time from CLK
Data Conversion Delay
100
50
2.5
2.5
1
Max.
0.2
0.8
10
3.5
3.5
Unit
MHz
V/µs
%
V
V
µA
µA
MHz
%
ns
ns
ns
ns
cycle
INPUT TIMING DIAGRAM
Clock
VTH = 1.5V (27°C)
Data
tSU tHOLD
VTH = 1.5V (27°C)
Amp. Output
Note : COM = 1
Start of conversion
Start of conversion
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet STV8438CV.PDF ] | |
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