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參數(shù)資料
| 型號(hào)： | TMC3533R2C80 |
| 廠(chǎng)商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類(lèi)： | DAC |
| 英文描述： | Triple Video D/A Converter 8 bit, 80 Msps, 3.3V |
| 中文描述： | TRIPLE, PARALLEL, 8 BITS INPUT LOADING, 0.015 us SETTLING TIME, 8-BIT DAC, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大小： | 68K |
| 代理商： | TMC3533R2C80 |
PRODUCT SPECIFICATION
TMC3533
REV. 0.9.1 11/24/99
5
Equivalent Circuits
Figure 2. Equivalent Digital Input Circuit Figure 3. Equivalent Analog Output Circuit
R
REF
36
42
572
Current-setting Resistor.
The full-scale output current of each
D/A converter is determined by the value of the resistor
connected between R
REF
and GND. The nominal value for
R
REF
is found from:
R
REF
= 9.1 (V
REF
/I
FS
),
but is optimized to be 572
. I
FS
is the full-scale (white) output
current (amps) from an output without sync. Sync current is 0.4
I
FS
.
D/A full-scale (white) current may also be calculated from:
I
FS
= V
FS
/R
L
Where V
FS
is the white voltage level and R
L
is the total resistive
load (ohms) on each D/A converter. V
FS
is the blank to full-scale
voltage.
Compensation Capacitor.
A 0.1 μF ceramic capacitor must be
connected between COMP and V
DD
to stabilize internal bias
circuitry.
COMP
34
40
0.1 μF
Power, Ground
V
DD
GND
12, 30, 31 17, 34–36
1, 14, 15,
27, 28, 38,
39, 48
13, 24, 25,
37
+3.3 V
0.0V
Power Supply.
Ground.
29–32
NC
—
—
No Connect
Pin
Name
Pin Number
LQFP
Value
Pin Function Description
PLCC
n
p
OUT
GND
27013B
V
DD
V
DD
Digital
Input
V
DD
p
n
27014D
GND
Pin Descriptions
(continued)
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