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參數(shù)資料
型號: 3656BG
元件分類: 隔離放大器
英文描述: Transformer Coupled ISOLATION AMPLIFIER
中文描述: 變壓器耦合隔離放大器
文件頁數(shù): 17/17頁
文件大小: 149K
代理商: 3656BG
3656
9
Total amplifier gain:
G = G1 G2 = VOUT VIN
Input Stage:
G1 = 1 + (RA/FA)
(Select G
1 to be less than 5V/full scale VIN to limit
demodulator output to 5V).
RA + RF ≥ 2M
(Select to load input demodulator with at least 2M
).
RC = RA || (RF + 100k) =
(Balance impedances seen by the + and – inputs
of A1 to reduce input offset caused by bias current).
Output Stage:
G2 = 1 + (RX/RK)
(Select ratio to obtain VOUT between 5V and 10V
full scale with VIN at its maximum).
R
X || RK = 100k
(Balance impedances seen by the + and – inputs
of A
2 to reduce effect of bias current on the
output offset).
RB = RA + RF
(Load output demodulator equal to input demodulator).
Inverting Gain, Voltage or Current Input
The signal portion of Figure 4 shows two possible inverting
input stage configurations: current and input, and voltage
input.
Input Stage:
For the voltage input case:
G1 = –RF/RS
(Select G1 to be less than 5V/full scale VIN
to limit the demodulator output voltage to 5V).
R
F = 2M
(Select to load the demodulator with
at least 2M
).
R
C = RS || (R1 + 100k) =
(Balance the impedances seen by the + and– inputs of A1).
For the current input case:
V
OUT = –IIN RF G2
RC = RF
RF may be made larger than 2M if desired. The 10pF
capacitors are used to compensate for the input capacitance
of A1 and to insure frequency stability.
Output Stage:
The output stage is the same as shown in equations (5), (6),
and (7).
(1)
(2)
(3)
(11)
(12)
(8)
FIGURE 4. Power: Two-Port, Single Supply; Signal: Inverting Gains.
(4)
R
A (RF + 100k)
R
A + RF + 100k
(5)
(6)
(7)
(9)
R
S (RF + 100k)
R
S + RF + 100k
(10)
D
M
I/P PWR
100k
+
0.47F
+
19
20
10pF
R
F = 2M
R
B = 2M
V
IN
+
R
S
10pF
R
C
I
IN
V
OUT
7
4
6
9
2
10
15
11
13
17
16
12
O/P PWR
Pulse GEN
1
3
14
A
2
A
1
相關(guān)PDF資料
PDF描述
3656 Transformer Coupled ISOLATION AMPLIFIER
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
3656F 制造商:JT&T Products 功能描述:
3656F1 制造商: 功能描述:
3656HG 功能描述:特殊用途放大器 Transformer Coupled Iso Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比(最小值): 輸入補(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
3656JG 功能描述:特殊用途放大器 Transformer Coupled Iso Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比(最小值): 輸入補(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
3656KG 功能描述:特殊用途放大器 Transformer Coupled Iso Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比(最小值): 輸入補(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
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