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參數(shù)資料
| 型號： | HI1-0539-8 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | Precision, 4-Channel, Low-Level, Differential Multiplexer |
| 中文描述： | 4-CHANNEL, DIFFERENTIAL MULTIPLEXER, CDIP16 |
| 封裝： | CERDIP-16 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大小： | 189K |
| 代理商： | HI1-0539-8 |
9
Provide Path For I
BIAS
The input bias current for any DC-coupled amplifier must
have an external path back to the amplifier’s power supply.
No such path exists in Figure 8A, and consequently the
amplifier output will remain in saturation.
A single large resistor (1M
to 10M
) from either signal line
to power supply common will provide the required path, but a
resistor on each line is necessary to preserve accuracy. A
single pair of these bias current resistors on the HI-539
output may be used if their loading effect can be tolerated
(each forms a voltage divider with r
ON
). Otherwise, a resistor
pair on each input channel of the multiplexer is required.
The use of bias current resistors is acceptable only if one is
confident that the sum of signal plus common-mode voltage
will remain within the input range of the multiplexer/amplifier
combination.
Another solution is to simply run a third wire from the low
side of the signal source, as in Figure 8B. This wire assures
a low common-mode voltage as well as providing the path
for bias currents. Making the connection near the multiplexer
will save wire, but it will also unbalance the line and reduce
the amplifier's common-mode rejection.
Differential Offset,
V
OS
There are two major sources of
V
OS
. That part due to the
expression (r
ON
l
D(ON)
+ l
D(ON)
r
ON
) becomes significant
with increasing temperature, as shown in the Electrical
Specifications tables. The other source of offset is the
thermocouple effects due to dissimilar materials in the signal
path. These include silicon, aluminum, tin, nickel-iron and
(often) gold, just to exit the package.
For the thermocouple effects in the package alone, the
constraint on
V
OS
may be stated in terms of a limit on the
difference in temperature for package pins leading to any
channel of the Hl-539. For example, a difference of 0.13
o
C
produces a 5
μ
V offset. Obviously, this
T effect can
dominate the
V
OS
parameter at any temperature unless
care is taken in mounting the Hl-539 package.
Temperature gradients across the Hl-539 package should be
held to a minimum in critical applications. Locate the Hl-539
far from heat producing components, with any air currents
flowing lengthwise across the package.
TABLE 1.
WIRE GAGE
EQUIVALENT WIDTH OF
P.C. CONDUCTOR
(2 oz. Cu)
DC RESISTANCE
PER FOOT
INDUCTANCE PER
FOOT
IMPEDANCE PER FOOT
60Hz
10kHz
18
0.47”
0.0064
0.36
μ
H
0.0064
0.0235
20
0.30”
0.0102
0.37
μ
H
0.0102
0.0254
22
0.19”
0.0161
0.37
μ
H
0.0161
0.0288
24
0.12”
0.0257
0.40
μ
H
0.0257
0.0345
26
0.075”
0.041
0.42
μ
H
0.041
0.0488
28
0.047”
0.066
0.45
μ
H
0.066
0.0718
30
0.029”
0.105
0.49
μ
H
0.105
0.110
32
0.018”
0.168
0.53
μ
H
0.168
0.171
HI-539
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HI-539 | Precision, 4-Channel, Low-Level, Differential Multiplexer |
| HI3-0546-5 | Single 16 and 8, Differential 8-Channel and 4-Channel CMOS Analog MUXs with Active Overvoltage Protection |
| HI9P0546-9 | Single 16 and 8, Differential 8-Channel and 4-Channel CMOS Analog MUXs with Active Overvoltage Protection |
| HI9P0547-9 | Power Resistor; Series:200; Resistance:900ohm; Resistance Tolerance: 5%; Power Rating:8W; Resistor Element Material:Ceramic; Temperature Coefficient:260 ppm; Leaded Process Compatible:No; Packaging:Bulk RoHS Compliant: No |
| HI9P0548-5 | Single 16 and 8, Differential 8-Channel and 4-Channel CMOS Analog MUXs with Active Overvoltage Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HI1-0539B | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HI1-0544-2 | 制造商:Harris Corporation 功能描述: |
| HI1-0546/883 | 制造商:Intersil Corporation 功能描述:MUX 16:1 OVP 28CDIP /883 - Rail/Tube |
| HI1-0546/883S2356 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HI1-0546-2 | 功能描述:多路器開關(guān) IC MUX 16:1 OVP 28CDIP MIL RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
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