參數(shù)資料
型號(hào): OP27CFK
廠商: Texas Instruments, Inc.
英文描述: LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
中文描述: 低噪聲,高精密高速運(yùn)算放大器
文件頁數(shù): 20/21頁
文件大小: 322K
代理商: OP27CFK
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
2–20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
APPLICATION INFORMATION
To Gate
Drive
#1
+
Typical
Multiplexing
FET Switches
#2
+
#24
+
Cold-Junction
Circuitry
+
+
Output
0.05
μ
F
100 k
High-Quality
Single-Point Ground
10
AVD = 10,000
Type S Thermocouples
5.4
μ
V/
°
C at 0
°
C
60
40
20
0
0
2
4
6
N
80
100
t – Time – seconds
120
8
10
OP27
NOTE A: If 24 channels are multiplexed per second and the output is required to settle to 0.1 % accuracy, the amplifier’s bandwidth cannot be
limited to less than 30 Hz. The peak-to-peak noise contribution of the OP27 will still be only 0.11
μ
V, which is equivalent to an error
of only 0.02
°
C.
Figure 40. Low-Noise, Multiplexed Thermocouple Amplifier and 0.1-Hz To 10-Hz
Peak-to-Peak Noise Voltage
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