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參數(shù)資料
| 型號(hào)： | TS615 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT |
| 中文描述： | 雙寬帶運(yùn)放的大輸出電流 |
| 文件頁數(shù)： | 22/27頁 |
| 文件大小： | 982K |
| 代理商： | TS615 |
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TS615
22/27
POWER SUPPLY BYPASSING
A proper power supply bypassing comes very im-
portant for optimizing the performance in high fre-
quency range. Bypass capacitors should be
placed as close as possible to the IC pins to im-
prove high frequency bypassing. A capacitor
greater than 1
μ
F is necessary to minimize the dis-
tortion. For a better quality bypassing a capacitor
of 10nF is added following the same condition of
implementation. These bypass capacitors must be
incorporated for the negative and the positive sup-
ply.
Figure 63 :
Circuit for Power Supply Bypassing
SINGLE POWER SUPPLY
The following figure show the case of a 5V single
power supply configuration
Figure 64 :
Circuit for +5V single supply
The TS615 operates from 12V down to 5V power
supplies. This is achieved with a dual power sup-
ply of ±6V and ±2.5V or a single power supply of
12V and 5V referenced to the ground. In the case
of this asymmetrical supplying, a new biasing is
necessary to assume a positive output dynamic
range between 0V and +V
CC
supply rails. Consid-
ering the values of V
OH
and V
OL
, the amplifier will
provide an output dynamic from +0.5V to 10.6V on
25
load for a 12V supplying, from 0.45V to 3.8V
on 10
load for a 5V supplying.
The amplifier must be biased with a mid supply
(nominally +V
CC
/2), in order to maintain the DC
component of the signal at this value. Several op-
tions are possible to provide this bias supply (such
as a virtual ground using an operational amplifier),
or a two-resistance divider which is the cheapest
solution. A high resistance value is required to lim-
it the current consumption. On the other hand, the
current must be high enough to bias the non-in-
verting input of the amplifier. If we consider this
bias current (30
μ
A max.) as the 1% of the current
through the resistance divider to keep a stable mid
supply, two resistances of 2.2k
can be used in
the case of a 12V power supply and two resistanc-
es of 820
can be used in the case of a 5V power
supply.
The input provides a high pass filter with a break
frequency below 10Hz which is necessary to re-
move the original 0 volt DC component of the input
signal, and to fix it at +V
CC
/2.
CHANNEL SEPARATION - CROSSTALK
The following figure show the crosstalk from an
amplifier to a second amplifier. This phenomenon,
accented in high frequencies, is unavoidable and
intrinsic of the circuit.
Nevertheless, the PCB layout has also an effect
on the crosstalk level. Capacitive coupling be-
tween signal wires, distance between critical sig-
nal nodes, power supply bypassing, are the most
significant points.
Figure 65 :
Crosstalk vs. Frequency
A
V
=+4, R
fb
=620
, V
CC
=±6V, Vout=2Vp
+
-V
CC
+V
CC
10
μ
F
+
10nF
TS615
+
10nF
-
10
μ
F
+
_
820
R
G
IN
+5V
Rload
OUT
910
10
μ
F
+ 1
μ
F
TS615
100
μ
F
820
+5V
10nF
1k
C
G
+
Rs
R2
R
fb
R1
Rin
10k
100k
1M
10M
-130
-120
-110
-100
-90
-80
-70
-60
-50
Frequency (Hz)
C
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PDF描述 |
|---|---|
| TS615IPWT | DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT |
| TS615P | DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT |
| TS616 | DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT |
| TS616IDW | DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT |
| TS616IDWT | DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS615_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT |
| TS615IPWT | 功能描述:運(yùn)算放大器 - 運(yùn)放 Dual Wideband RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TS615P | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT |
| TS616 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High-speed operational amplifier evaluation board kit |
| TS616_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual wide band operational amplifier with high output current |
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