欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: 4127
廠商: Texas Instruments, Inc.
元件分類: 對數放大器
英文描述: Logarithmic Amplifier(對數放大器)
中文描述: 對數放大器(對數放大器)
文件頁數: 3/8頁
文件大小: 107K
代理商: 4127
4127
3
TYPICAL PERFORMANCE CURVES
At +25
°C with rated supplies, unless otherwise noted.
DISCUSSION OF
SPECIFICATIONS
ACCURACY
The deviation from the ideal output voltage defined as a
percent of the full scale output voltage.
INPUT/OUTPUT RANGE
The log relationships of –A log
and –A log
are
subject to the constraints specified. The 4127 can be oper-
ated with inputs lower than those given, but the accuracy
will be degraded.
FREQUENCY RESPONSE
The small-signal frequency response varies considerably
with signal level and scaling, so the frequency response is
specified under several different operating conditions.
STABILITY
The use of a monolithic transistor quad and low-drift amps
minimizes drift, but some drift remains in the scale-factor,
reference current, and input offset. Input offset consists of a
bias current plus the op amp input voltage offset divided by
the signal source resistance. Also, there is some slight drift
in conformity to the log function and in output amplifier
offset, but this is generally negligible.
THEORY OF OPERATION
The 4127 is a complete logarithmic amplifier that can be
pin-programmed to accept input currents or voltages of
either polarity. By making use of the internal current in-
verter, reference current generator, log ratio element, and
uncommitted op amp, you can generate a variety of logarith-
I
S
I
R
E
S
I
RR
10nA
Resistance (
)
RELATIONSHIP OF REFERENCE CURRENT, I
R
AND EXTERNAL RESISTOR, R
1
Reference
Current
100A
10A
1A
100nA
100k
10M
10k
100M
1M
E
O = –A log10
I
S
I
R
0
Resistance (k
)
RELATIONSHIP OF SCALE FACTOR “A”
TO GAIN SETTING RESISTOR, R
2
Scale
Factor
“A”
(V)
10
9
8
7
6
5
4
3
2
1
20
60
080
40
E
O = –A log10
|I
S|
I
R
LOG RELATIONSHIP OF
AND OUTPUT
VOLTAGE IN TERMS OF “A”
E
O = –A log10
|I
S|
I
R
0.001
IR
0.01
IR
0.1
IR
10
IR
100
IR
1000
IR
|I
S|
I
R
Input
Current
I
S
4A
2A
–2A
–4A
Output
Voltage
E
O – Volts
RELATIONSHIP OF
AND OUTPUT VOLTAGE
For I
R = 1A and A = 5V and 10V
|I
S|
I
R
0.01A
E
O = –A log
|I
S|
I
R
Input
Current
I
S
Output
Voltage
5V
10V
–5V
–10V
0.1A
1A
10A
100A
Range of
Adjustment
40dB
80dB
A = 10V
A = 5V
相關PDF資料
PDF描述
41680 Toroidal Surface Mount Inductors
416R8 Toroidal Surface Mount Inductors
41100 Toroidal Surface Mount Inductors
41101 Toroidal Surface Mount Inductors
41150 Toroidal Surface Mount Inductors
相關代理商/技術參數
參數描述
412-7 功能描述:旋鈕開關 7 TAPS 50A/300VAC 20VDC RoHS:否 制造商:C&K Components 位置數量:5 卡片組數量: 每卡片組極數:2 電流額定值:250 mA 電壓額定值:125 V 指數角: 觸點類型: 觸點形式:DPST 端接類型:Solder 安裝類型:Panel 觸點電鍍:Silver
41270.07 制造商:Vynckier Enclosure Systems Inc 功能描述:APO CARRY HANDLE
412700000 功能描述:開關配件 STACKING SCREW 3XXX .950 RoHS:否 制造商:C&K Components 類型:Cap 用于:Pushbutton Switches 設計目的:
4127010 制造商:Rittal 功能描述:DOOR SWITCH UL
412701000 功能描述:開關配件 SCRW 3-4 FRNT 3 REAR RoHS:否 制造商:C&K Components 類型:Cap 用于:Pushbutton Switches 設計目的:
主站蜘蛛池模板: 明溪县| 松阳县| 新安县| 斗六市| 大冶市| 平遥县| 石首市| 清涧县| 苍溪县| 囊谦县| 南川市| 应城市| 万载县| 灵石县| 黔江区| 定远县| 临潭县| 郎溪县| 台北县| 通山县| 修文县| 时尚| 青浦区| 楚雄市| 西藏| 丰台区| 诏安县| 莆田市| 武夷山市| 双桥区| 通州区| 宁夏| 梧州市| 江陵县| 文登市| 富锦市| 长治县| 新泰市| 顺平县| 兴海县| 广元市|