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參數資料
| 型號： | ISO102B |
| 英文描述： | SIGNAL ISOLATION BUFFER AMPLIFIERS |
| 中文描述： | 信號隔離緩沖放大器 |
| 文件頁數： | 7/15頁 |
| 文件大小： | 230K |
| 代理商： | ISO102B |
7
ISO102/106
TYPICAL PERFORMANCE CURVES
(CONT)
T
A
= +25
°
C, V
CC
=
±
15VDC unless otherwise noted.
FIGURE 1. Simplified Diagram of ISO102 and ISO106.
39
23
Offset
Adjust
40
24
+V
CC1
1
1
–V
CC1
20
12
+V
CC2
21
13
–V
CC2
19
11
Ref
2
3
3
4
4
37
Offset
Ref
1
21
38 22
2
2
V
IN
Isolation
Barrier
V
22
14
OUT
10
18
16
24
Digital
Common
Common
2
Common
1
ISO102
ISO106
+5V
Out
0.5k
24.5k
2.5k
97.5k
Osc.
f
O
f
O
VCO
3pF
3pF
3k
3k
Sense
Amp
C
2
15
23
9
17
C
1
Detector
-Freq.
θ
VCO
+5V Out
Loop
Filter
LP
Filter
PLL
Gain
Adjust
f
O
V
IN
THEORY OF OPERATION
The ISO102 and ISO106 have no galvanic connection be-
tween the input and output. The analog input signal refer-
enced to the input common is accurately duplicated at the
output referenced to the output common. Because the barrier
information is digital, potentials between the two commons
can assume a wide range of voltages and frequencies with-
out influencing the output signal. Signal information re-
mains undisturbed until the slew rate of the barrier voltage
exceeds 100V/
μ
s. The isolation amplifier’s ability to reject
fast dV/dt changes between the two grounds is specified as
transient immunity. The amplifier is protected from damage
for slew rates up to 100,000V/
μ
s.
A simplified diagram of the ISO102 and ISO106 is shown in
Figure 1. The design consists of an input voltage-controlled
oscillator (VCO) also known as a voltage-to-frequency con-
verter (VFC), differential capacitors, and output phase lock
loop (PLL). The input VCO drives digital levels directly into
the two 3pF barrier capacitors. The digital signal is fre-
quency modulated and appears differentially across the bar-
rier, while the externally applied isolation voltage appears
common-mode.
EFFECT OF REFERENCE LOADING ON OFFSET
Voltage Reference Load (mA)
1
0
2
50
0
–50
O
Ref
1
Ref
2
0.01
0.005
0
–0.005
–0.01
ISO102B TYPICAL LINEARITY
–10
0
10
V
OUT
= V
IN
(V)
N
T = –25°C to +85°C bandwidth limited to 10Hz.
(Linearity is limited by 1/f noise). Bypass
capacitors located 0.25" from supply pins.
5
–5
相關PDF資料 |
PDF描述 |
|---|---|
| ISO106 | SIGNAL ISOLATION BUFFER AMPLIFIERS |
| ISO106B | SIGNAL ISOLATION BUFFER AMPLIFIERS |
| ISO102 | SIGNAL ISOLATION BUFFER AMPLIFIERS |
| ISO103 | Low-Cost, Internally Powered ISOLATION AMPLIFIER |
| ISO103B | Low-Cost, Internally Powered ISOLATION AMPLIFIER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISO103 | 功能描述:特殊用途放大器 Low-Cost Internally Pwrd Iso Amp RoHS:否 制造商:Texas Instruments 通道數量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| ISO103 | 制造商:Texas Instruments 功能描述:IC AMP ISOLATION DIP24 103 |
| ISO103B | 功能描述:特殊用途放大器 Low-Cost Internally Pwrd Iso Amp RoHS:否 制造商:Texas Instruments 通道數量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| ISO1050 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ISOLATED CAN TRANSCEIVER |
| ISO1050_10 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ISOLATED CAN TRANSCEIVER |
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