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參數(shù)資料
| 型號： | MAX4461 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Precision Instrumentation Amplifier |
| 中文描述： | 精密儀表放大器 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大小： | 439K |
| 代理商： | MAX4461 |
M
SOT23, 3V/5V, Single-Supply, Rail-to-Rail
Instrumentation Amplifiers
12
______________________________________________________________________________________
Detailed Description
The MAX4460/MAX4461/MAX4462 family of instrumen-
tation amplifiers implements Maxim
’
s proprietary indi-
rect current-feedback design to achieve a precision
specification and excellent gain-bandwidth product.
These new techniques allow ground-sensing capability
combined with an ultra-low input current and an
increased common-mode rejection.
The differential input signal is converted to a current by
an input transconductance stage. An output transcon-
ductance stage converts a portion of the output voltage
(equal to the output voltage divided by the gain) into
another precision current. These two currents are sub-
tracted and the result is fed to a loop amplifier with a
class AB output stage with sufficient gain to minimize
errors (Figure 1).
The MAX4461U/T/H and MAX4462U/T/H have factory-
trimmed gains of 1, 10, and 100, respectively. The
MAX4460 has an adjustable gain, set with an external
pair of resistors between pins OUT, FB, and GND
(Figure 2).
The MAX4462U/T/H has a reference input (REF) which
is connected to an external reference for bipolar opera-
tion of the device. The range for V
REF
is 0.1V to (V
DD
-
1.7V). For full output-swing capability, optimal perfor-
mance is usually obtained with V
REF
= V
DD
/2
.
The MAX4460/MAX4461/MAX4462 operate with single-
supply voltages of 2.85V to 5.25V. It is possible to use the
MAX4462U/T/H in a dual-supply configuration with up to
±2.6V at V
DD
and V
SS
, with REF connected to ground.
The MAX4461U/T/H has a shutdown feature to reduce
the supply current to less than 1μA. The MAX4461U/
T/H output is internally referenced to ground, making
the part suitable for unipolar operations.
The MAX4460 has an FB pin that can be used to exter-
nally set the gain through a pair of resistors (see
Setting
the Gain
(MAX4460) section). The MAX4460 output is
internally referenced to ground, making the part suitable
for unipolar operations.
MAX4460
g
M
g
M
FB
V
DD
MAX4461
g
M
g
M
V
DD
SHDN
MAX4462
g
M
g
M
V
DD
REF
V
SS
OUT
OUT
OUT
Figure 1. Functional Diagrams
MAX4460
g
M
g
M
FB
V
DD
R1
R2
OUT
Figure 2. MAX4460 External Resistor Configuration
Functional Diagrams
相關PDF資料 |
PDF描述 |
|---|---|
| MAX4462 | Precision Instrumentation Amplifier |
| MAX4462HEUT-T | Precision Instrumentation Amplifier |
| MAX4460ESA | Precision Instrumentation Amplifier |
| MAX4460EUT-T | Precision Instrumentation Amplifier |
| MAX4461TESA | Precision Instrumentation Amplifier |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4461HESA | 功能描述:儀表放大器 3V/5V Single-Supply Rail-Rail RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
| MAX4461HESA+ | 功能描述:儀表放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
| MAX4461HESA+T | 功能描述:儀表放大器 S0T23 3V/5V Single-Supply Rail-to-Rail 儀表放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
| MAX4461HESA-T | 功能描述:儀表放大器 3V/5V Single-Supply Rail-Rail RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
| MAX4461HETT+ | 制造商:Maxim Integrated Products 功能描述:SP AMP INSTR AMP SGL R-R O/P 5.25V 6TDFN EP - Rail/Tube |
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