參數(shù)資料
型號: MCP6S26
廠商: Microchip Technology Inc.
元件分類: FPGA
英文描述: 400000 SYSTEM GATE 2.5 VOLT FPGA - NOT RECOMMENDED for NEW DESIGN
中文描述: 單端,軌至軌I / O,低增益美國PGA
文件頁數(shù): 26/43頁
文件大?。?/td> 880K
代理商: MCP6S26
MCP6S21/2/6/8
DS21117A-page 26
2003 Microchip Technology Inc.
6.4
Typical Applications
6.4.1
GAIN RANGING
Figure 6-3 shows a circuit that measures the current I
X
.
It benefits from changing the gain on the PGA. Just as
a hand-held multimeter uses different measurement
ranges to obtain the best results, this circuit makes it
easy to set a high gain for small signals and a low gain
for large signals. As a result, the required dynamic
range at the PGA’s output is less than at its input (by up
to 30 dB).
FIGURE 6-3:
Current Measurement Circuit.
Wide Dynamic Range
6.4.2
SHIFTED GAIN RANGE PGA
Figure 6-4 shows a circuit using an MCP6021 at a gain
of +10 in front of an MCP6S21. This changes the over-
all gain range to +10 V/V to +320 V/V (from +1 V/V to
+32 V/V).
FIGURE 6-4:
Range.
PGA with Modified Gain
It is also easy to shift the gain range to lower gains (see
Figure 6-6). The MCP6021 acts as a unity gain buffer,
and the resistive voltage divider shifts the gain range
down to +0.1 V/V to +3.2 V/V (from +1 V/V to +32 V/V).
FIGURE 6-5:
PGA with lower gain range.
6.4.3
EXTENDED GAIN RANGE PGA
Figure 6-6 gives a +1 V/V to +1024 V/V gain range,
which is much greater than the range for a single PGA
(+1 V/V to +32 V/V). The first PGA provides input mul-
tiplexing capability, while the second PGA only needs
one input. These devices can be daisy chained
(Section 5.3, “Daisy Chain Configuration”).
FIGURE 6-6:
Range.
PGA with Extended Gain
6.4.4
MULTIPLE SENSOR AMPLIFIER
The multiple channel PGAs (except the MCP6S21)
allow the user to select which sensor appears on the
output (see Figure 6-7). These devices can also
change the gain to optimize performance for each
sensor.
FIGURE 6-7:
Inputs.
PGA with Multiple Sensor
MCP6S2X
V
OUT
I
X
R
S
V
IN
MCP6021
MCP6S21
V
OUT
10.0 k
1.11 k
+
_
V
IN
MCP6021
MCP6S21
V
OUT
10.0 k
1.11 k
+
_
V
IN
V
OUT
MCP6S28
MCP6S21
Sensor # 0
Sensor # 1
Sensor # 5
MCP6S26
V
OUT
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP6S26-I/P 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI 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
MCP6S26-I/SL 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI 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
MCP6S26-I/ST 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI 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
MCP6S26T-I/SL 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI 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
MCP6S26T-I/ST 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI 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