參數(shù)資料
型號： MAX4208
廠商： Maxim Integrated Products, Inc.
元件分類： 運動控制電子
英文描述： Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
中文描述： 超低失調(diào)/漂移、高精度儀表放大器，提供REF緩沖器
文件頁數(shù)： 6/17頁
文件大?。?/td> 263K
代理商： MAX4208
M
Ultra-Low Offset/Drift, Precision
Instrumentation Amplifiers with REF Buffer
6
_______________________________________________________________________________________
Note 1:
Specifications are 100% production tested at +25°C, unless otherwise noted. Limits over temperature are guaranteed by design.
Note 2:
Guaranteed by design. Thermocouple and leakage effects preclude measurement of this parameter during production testing.
Devices are screened during production testing to eliminate defective units.
Note 3:
IN+ and IN- are gates to CMOS transistors with typical input bias current of 1pA. CMOS leakage is so small that it is impractical to
test and guarantee in production. Max V
DIFF
is ±100mV. Devices are screened during production testing to eliminate defective
units. For the MAX4208, when there are no external resistors, the input bias current at FB and REF is 1pA (typ).
Note 4:
Setting REF to ground (V
SS
) is allowed if the REF buffer is off. The unity-gain buffer is on when V
REFIN/MODE
is between 0.15V
and (V
DD
- 1.3V). In this range, V
REF
= V
REFIN/MODE
±40μV (maximum buffer input offset voltage over temperature). Setting
REFIN/MODE to V
DD
puts the part in shutdown (I
DD
= 1.4μA).
Note 5:
This is the REF current needed to directly drive the end terminal of the gain-setting resistors when REFIN/MODE is connected to
V
SS
to put the buffer in high-impedance mode. The REF input current is tested at the gain of 100. At gain 10 and 1000, I
REF
=
±100μA and 3.4μA, respectively at +25°C. See the
Detailed Description
.
Note 6:
Output swing high (V
OH
) and output swing low (V
OL
) are measured only on G = 100 and G = 1000 devices. Devices with G = 1
and G = 10 have output swing high limited by the range of V
REF
, V
CM
, and V
DIFF
(see the
Output Swing
section).
Note 7:
Maximum range for V
DIFF
is from -100mV to +100mV.
Note 8:
At G = 100V/V and G = 1000V/V, these instrumentation amplifiers are bandwidth limited and not capable of slew-rate-limited dV/dt.
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 5V, V
SS
= 0V, V
CM
= V
REF
= V
DD
/2, V
REFIN/MODE
= V
SS
, R
L
= 100k
Ω
to V
DD
/2, V
DIFF
= (V
IN+
- V
IN-
) = 0V, MAX4208 set for
G = 100V/V (R1 = 1k
Ω
, R2 = 99k
Ω
),
T
A
= -40°C to +125°C
, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
REFIN/MODE Input-Voltage
High
V
IH
MAX4208/MAX4209 in shutdown
V
DD
-
0.2
V
T
A
= +25°C to +85°C
96
REFIN/MODE Buffer
Common-Mode Rejection Ratio
(V
SS
+ 0.2V)
≤
V
REF
≤
(V
DD
- 1.6V)
T
A
= -40°C to +125°C
90
dB
REF Common-Mode Range
(Note 4)
Guaranteed by REF CMRR test
V
SS
V
DD
-
1.6
V
T
A
= +25°C to +85°C
T
A
= - 40°C to + 125°C
96
90
REF Common-Mode Rejection
Ratio
V
SS
≤
V
REF
≤
(V
DD
-
1.6V)
dB
T
A
= +25°C to +85°C
96
REFIN/MODE Buffer
Power-Supply Rejection Ratio
V
D D
= 2.85V to 5.5V
V
REFIN/MODE
= V
CM
= (V
SS
+ 0.5V)
T
A
= - 40°C to + 125°C
90
dB
OUTPUT DC CHARACTERISTICS
R
L
= 100k
Ω
R
L
= 10k
Ω
R
L
= 1k
Ω
R
L
= 100k
Ω
R
L
= 10k
Ω
R
L
= 1k
Ω
60
90
375
50
75
325
V
OH
V
DD
- V
OUT
Output-Voltage Swing (Note 6)
V
OL
V
OUT
- V
SS
mV
POWER SUPPLY
Supply Voltage
V
DD
Guaranteed by PSRR test
2.85
5.50
V
V
REFIN/MODE
= V
SS
,
buffer OFF
V
DD
= 5V
1.70
(V
SS
+ 0.2V)
≤
V
REFIN/MODE
≤
(V
DD
- 1.6V), buffer ON
REFIN/MODE = V
DD
, shutdown mode
V
DD
= 5V
3.0
mA
Supply Current
10
μA
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4208AUA+ 功能描述:儀表放大器 Low Offset/Drift Instrumentation Amp 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
MAX4208AUA+T 功能描述:儀表放大器 Low Offset/Drift Instrumentation Amp 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
MAX4208EVKIT+ 功能描述:放大器 IC 開發(fā)工具 MAX4208 Eval Kit RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V
MAX4209EVKIT+ 功能描述:放大器 IC 開發(fā)工具 MAX4209 Eval Kit RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V
MAX4209HAUA+ 功能描述:儀表放大器 Low Offset/Drift Instrumentation Amp 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
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