參數(shù)資料
型號： FMS3818KRC
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： DAC
英文描述： Triple Video D/A Converter 3 x 8 bit, 180 Ms/s
中文描述： PARALLEL, 8 BITS INPUT LOADING, 0.0025 us SETTLING TIME, 8-BIT DAC, PQFP48
封裝： LQFP-48
文件頁數(shù)： 4/13頁
文件大小： 178K
代理商： FMS3818KRC
FMS3818
PRODUCT SPECIFICATION
4
REV. 1.2.2 11/11/01
Pin Descriptions
Pin
Name
Clock and Data Inputs
CLK
Pin Number
Value
Pin Function Description
26
CMOS
Clock Input.
should be driven by a dedicated buffer to avoid reflection induced jitter,
overshoot, and undershoot.
Red, Green, and Blue Pixel Data Inputs.
registered on the rising edge of CLK.
Pixel data is registered on the rising edge of CLK. CLK
R
G
B
Controls
SYNC
7-0
7-0
7-0
47-40
9-2
23-16
CMOS
RGB digital inputs are
11
CMOS
Sync Pulse Input.
superimposes a sync pulse on the I
registered on the rising edge of CLK. SYNC does not override any other
data and should be used only during the blanking interval. If sync pulses
are not required, SYNC should be connected to GND.
Blanking Input.
When BLANK is LOW, pixel data inputs are ignored and
the D/A converter outputs are driven to the blanking level. BLANK is
registered on the rising edge of CLK.
Bringing SYNC LOW, disables a current source which
OG
output. SYNC and pixel data are
BLANK
10
CMOS
Video Outputs
I
OR
I
OG
I
OB
33
32
29
0.700 V
p-p
Red, Green, and Blue Current Outputs.
drive VESA VSIS, and RS-343A/SMPTE-170M compatible levels into
doubly-terminated 75 Ohm lines. Sync pulses can be added to the green
output. When SYNC is HIGH, the current added to I
Current source outputs can
OG
is:
IO
S
= 2.33 (V
REF
/ R
REF
)
Voltage Reference
V
REF
35
+1.25 V
Voltage Reference Input/Output.
available on this pin. An external +1.25 Volt reference may be applied to
this pin to override the internal reference. Decoupling V
a 0.1μF ceramic capacitor is required.
Current-set Resistor Node.
Full-scale output current of each D/A
converter is determined by the value of the resistor connected between
R
REF
and GND. Nominal value of R
REF
Internal 1.25V voltage reference is
REF
to GND with
R
REF
36
348
is found from:
R
REF
= 5.31 (V
REF
/I
FS
)
where I
D/A converter (without sync). Sync is 0.439 I
FS
is the full-scale output current (amps) from the
FS
.
D/A full-scale current may also be calculated from:
I
FS
= V
FS
/R
L
Where V
(ohms) on each D/A converter.
Compensation Capacitor Node.
connected between COMP and V
FS
is the full-scale voltage level and R
L
is the total resistive load
COMP
34
0.1 μF
A 0.1 μF ceramic capacitor must be
DD
to stabilize internal bias circuitry.
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FMS3818KRC_NL 功能描述:數(shù)模轉(zhuǎn)換器- DAC MIXED SIGNAL FG, PB-FREE RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
FMS3818KRCX 功能描述:視頻 IC RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
FMS3818KRCX_NL 功能描述:數(shù)模轉(zhuǎn)換器- DAC MIXED SIGNAL FG, PB-FREE RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
FMS3820KRC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:D/A CONVERTER
FMS3T148 制造商: 功能描述: 制造商:undefined 功能描述:
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