參數(shù)資料
型號(hào)： OPA860
元件分類： 跨導(dǎo)放大器
英文描述： Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA) and BUFFER
中文描述： 寬帶運(yùn)算跨導(dǎo)放大器（OTA）和緩沖區(qū)
文件頁(yè)數(shù)： 23/29頁(yè)
文件大?。?/td> 613K
代理商： OPA860
www.ti.com
Video Luminance Matrix
V
IN
V
OUT
B
C
E
B
C
E
R
3
R
1
R
V
C
1
C
1
R
2
V
IN
V
OUT
x1
x1
150
OTA
3 B
2
E
C
8
V
BLUE
V
LUMINANCE
1820
(1)
V
GREEN
340
(1)
V
RED
665
(1)
200
200
+1
6
5
R
Q
= 250
(I
Q
= 11.2mA)
NOTE: (1) Resistors shown are 1% values
that produce 30%/59%/11% R/G/B mix.
H(s)
a
0
s
2
C
1
s
C
0
R
1
R
V
1
1
sC
2
R1
R2
R3
s
2
C
1
C
2
R
1
R
2
State-Variable Filters
0
1
C
1
C
2
R
1
R
2
(10)
Q
C
1
C
2
R
3
R
1
R
2
(11)
OPA860
SBOS331–JUNE 2005
The inverting amplifier in
Figure 59
amplifies the
three input voltages that correspond to the luminance
section of the RGB color signal. Different feedback
resistances weight the voltages differently, resulting
in an output voltage consisting of 30% of the red,
59% of the green, and 11% of the blue section of the
input voltage. The way in which the signal is weighted
corresponds to the transformation equation for con-
verting RGB pictures into B/W pictures. The output
signal is the black/white replay. It might drive a
monochrome control monitor or an analog printer
(hardcopy output).
Figure 60. State Variable Filter Block Diagram
Figure 61. State Variable Filter Using the OPA860
The transfer function is then:
Figure 59. Video Luminance Matrix
(9)
The ability of the OPA860 to easily drive a capacitor
can be put to good use in implementing state-variable
filters. A state-variable filter, or KHN filter, can be
represented with integrators and coefficients. For
example, the filter represented in the block diagram
of
Figure 60
can easily be implemented with two
OPA860s, as shown in
Figure 61
.
23
相關(guān)PDF資料
PDF描述
OPA860ID Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA) and BUFFER
OPA860IDR Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA) and BUFFER
OPB610 Photo Gap Detector
OPB621
OPB665N 1024K, 128K X 8, 2.5V SERIAL EEPROM, -40C to +85C, 8-PDIP, TUBE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
OPA860ID 功能描述:跨導(dǎo)放大器 Wide Bandwidth Transconductance RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 封裝 / 箱體:SOIC-14 帶寬: 輸入補(bǔ)償電壓:40 mV at +/- 5 V 電源電壓-最大:+/- 5 V 電源電流: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube
OPA860ID 制造商:Texas Instruments 功能描述:TRANSCONDUCTANCE OP-AMP W/BUFFER ((NS))
OPA860IDG4 功能描述:跨導(dǎo)放大器 Wide BW Op Transcon Amp and Buffer RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 封裝 / 箱體:SOIC-14 帶寬: 輸入補(bǔ)償電壓:40 mV at +/- 5 V 電源電壓-最大:+/- 5 V 電源電流: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube
OPA860IDR 功能描述:跨導(dǎo)放大器 Wide Bandwidth Transconductance RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 封裝 / 箱體:SOIC-14 帶寬: 輸入補(bǔ)償電壓:40 mV at +/- 5 V 電源電壓-最大:+/- 5 V 電源電流: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube
OPA860IDRG4 功能描述:跨導(dǎo)放大器 Wide BW Op Transcon Amp and Buffer RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 封裝 / 箱體:SOIC-14 帶寬: 輸入補(bǔ)償電壓:40 mV at +/- 5 V 電源電壓-最大:+/- 5 V 電源電流: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube
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