參數(shù)資料
型號(hào): THS6012EVM
廠商: Texas Instruments, Inc.
英文描述: 500-mA DUAL DIFFERENTIAL LINE DRIVER
中文描述: 500毫安雙差分線路驅(qū)動(dòng)器
文件頁(yè)數(shù): 31/35頁(yè)
文件大小: 604K
代理商: THS6012EVM
THS6012
500-mA DUAL DIFFERENTIAL LINE DRIVER
SLOS226C– SEPTEMBER 1998 – REVISED FEBRUARY 2000
31
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
general configurations (continued)
VI
C2
R2
R1
C1
RF
RG
R1 = R2 = R
C1 = C2 = C
Q = Peaking Factor
(Butterworth Q = 0.707)
(
=
1
Q
2 –
)
RG
RF
_
+
f–3dB
1
2 RC
Figure 49. 2-Pole Low-Pass Sallen-Key Filter
There are two simple ways to create an integrator with a CFB amplifier. The first one shown in Figure 51 adds
a resistor in series with the capacitor. This is acceptable because at high frequencies, the resistor is dominant
and the feedback impedance never drops below the resistor value. The second one shown in Figure 52 uses
positive feedback to create the integration. Caution is advised because oscillations can occur because of the
positive feedback.
+
C1
RF
RG
VO
VI
THS6012
VO
VI
RF
RG
S
1
RFC1
S
Figure 50. Inverting CFB Integrator
+
RF
VO
RG
R2
R1
C1
RA
VI
THS6012
For Stable Operation:
R2
R1 || RA
(
RF
RG
)
sR1C1
RF
RG
1 +
VO
VI
Figure 51. Non-Inverting CFB Integrator
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