參數(shù)資料
型號: TMC3003KRC30
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: DAC
英文描述: Triple Video D/A Converter
中文描述: TRIPLE, PARALLEL, WORD INPUT LOADING, 0.015 us SETTLING TIME, 10-BIT DAC, PQFP48
封裝: LQFP-48
文件頁數(shù): 5/12頁
文件大?。?/td> 96K
代理商: TMC3003KRC30
PRODUCT SPECIFICATION
TMC3003
REV. 1.0.3 3/5/01
5
Equivalent Circuits
Figure 2. Equivalent Digital Input Circuit
Figure 3. Equivalent Analog Output Circuit
Voltage Reference
V
REF
38
35
+1.235 V
Voltage Reference output/input.
source of +1.235 Volts is output on this pin. An external
+1.235 Volt reference may be applied here which
overrides the internal reference. Decoupling V
with a 0.1μF ceramic capacitor is required.
Current-setting resistor.
The full-scale output current of
each D/A converter is determined by the value of the
resistor connected between R
value for R
REF
is found from:
An internal voltage
REF
to GND
R
REF
39
36
560
REF
and GND. The nominal
R
REF
= 9.1( V
REF
/I
FS
)
where I
from the
D/A converter (without sync). Sync is 0.4 * I
FS
is the full-scale (white) output current (in amps)
FS
.
D/A full-scale (white) current may also be calculated from:
I
FS
= V
FS
/ R
L
Where V
resistive load (in ohms) on each D/A converter. V
blank to full-scale voltage.
Compensation capacitor.
must be connected between COMP and V
internal bias circuitry.
FS
is the white voltage level and R
L
is the total
FS
is the
COMP
37
34
0.1 μF
A 0.1 μF ceramic capacitor
DD
to stabilize
Power and Ground
V
DD
GND
18, 33, 34
30, 31
12, 30, 31
27, 28
+5 V
0.0 V
Power supply
Ground
Pin Descriptions
(continued)
Pin Name
Pin Number
PLCC
Value
Description
LQFP
Digital
Input
V
DD
p
n
27014C
GND
n
p
OUT
GND
27013B
V
DD
V
DD
相關(guān)PDF資料
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TMC3003KRC50 Triple Video D/A Converter
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