參數(shù)資料
型號(hào): MAX4209
廠商: Maxim Integrated Products, Inc.
元件分類(lèi): 運(yùn)動(dòng)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(yè)數(shù): 10/17頁(yè)
文件大?。?/td> 263K
代理商: MAX4209
M
Ultra-Low Offset/Drift, Precision
Instrumentation Amplifiers with REF Buffer
10
______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1
REFIN/MODE
Reference/Shutdown Mode Input. Trimode function is as follows:
Connect to V
DD
to put the device in shutdown mode.
Connect to an external reference (between V
SS
+ 0.2V and V
DD
- 1.3V) to buffer the voltage at
REFIN/MODE. Using the REF buffer allows the use of a simple resistor-divider or high-impedance
external reference to set the OUT level at 0mV IN with minimum error.
Connect to V
SS
to force the internal buffer output into a high-impedance state to allow external direct
drive of REF.
Negative Differential Input
Positive Differential Input
2
3
IN-
IN+
4
V
SS
Negative Supply Input. Bypass V
SS
to ground with a 0.1μF capacitor or connect to ground for
single-supply operation.
5
REF
Output Reference Level. REF sets the OUT voltage for zero differential input. The internal buffer
sets the voltage at REF when the voltage at REFIN/MODE is between V
SS
+ 0.2V and V
DD
- 1.3V.
6
FB
Feedback Input. Connect FB to the center tap of an external resistive divider from OUT to REF to
set the gain for the MAX4208. MAX4209 FB is internally connected to gain-setting resistors. Connect
an optional capacitor, C
FB
, from OUT to FB to reduce autozero noise.
Amplifier Output
Positive Supply Input. Bypass V
DD
to ground with a 0.1μF capacitor.
7
8
OUT
V
DD
0.1% SETTLING TIME
vs. GAIN
M
GAIN (V/V)
S
μ
s
10
100
100
1000
10,000
10
1
1000
SETTLING TIME
vs. ACCURACY
M
ACCURACY (%)
S
μ
s
0.10
20
40
60
80
100
120
140
160
180
0
0.01
1.00
G = 100
Typical Operating 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
= +25°C, unless otherwise noted.)
相關(guān)PDF資料
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