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參數(shù)資料
型號： LTC1992IMS8#TRPBF
廠商： Linear Technology
文件頁數(shù)： 31/42頁
文件大?。?/td> 0K
描述： IC AMP/DVR I/O FULLY DIFF 8-MSOP
標(biāo)準(zhǔn)包裝： 2,500
放大器類型： 差分
電路數(shù)： 1
輸出類型： 差分，滿擺幅
轉(zhuǎn)換速率： 1.5 V/µs
增益帶寬積： 3.2MHz
電流 - 輸入偏壓： 2pA
電壓 - 輸入偏移： 250µV
電流 - 電源： 700µA
電流 - 輸出 / 通道： 30mA
電壓 - 電源，單路/雙路(±)： 2.7 V ~ 11 V，±1.35 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）
供應(yīng)商設(shè)備封裝： 8-MSOP
包裝： 帶卷 (TR)
LTC1992 Family
37
1992fb
Figure 7. Asymmetrical Feedback Application Circuits (Most Suitable in Applications with Dual,
Split Supplies (e.g., ±5V), Ground Referenced Single-Ended Input Signals and VOCM Connected to Ground)
once the VOCM voltage is set to zero, the gain formula is the
same as a standard noninverting op amp circuit multiplied
by two to account for the complementary output. Taking
RFB to zero (i.e., taking β to one) gives the same formula
as the top circuit. As in the top circuit, this circuit is also
useful as a single-ended output, high input impedance
inverting gain block (this time with gain). The input com-
mon mode considerations are similar to the top circuit’s,
but are not nearly as constrained since there is now gain
in the noninverting amplifier path. This circuit, with VOCM
at ground, also permits a rail-to-rail output swing in most
applications.
The bottom circuit is another circuit that utilizes a standard
op amp configuration with a complementary output. In this
case, the standard op amp circuit has an inverting con-
figuration. With VOCM at zero volts, the gain formula is the
same as a standard inverting op amp circuit multiplied by
two to account for the complementary output. This circuit
does not have any common mode level constraints as the
inverting input voltage sets the input common mode level.
This circuit also delivers rail-to-rail output voltage swing
without any concerns.
APPLICATIONS INFORMATION
–
+
+VOUT
VOUTDIFF = 2(+VIN – VOCM)
SETTING VOCM = 0V
VOUTDIFF = 2VIN
–VOUT
VIN
VOCM
VOCM LTC1992
–
+
+VOUT
RFB
RIN
VOUTDIFF = 2
SETTING VOCM = 0V
VOUTDIFF = 2VIN
–VOUT
VIN
VOCM
RIN
RFB
()
+VIN
;
=
= 2VIN 1 +
– VOCM
1
()1 ()
RIN
RIN + RFB
RFB
RIN
–
+
+VOUT
VOUTDIFF = 2
SETTING VOCM = 0V
VOUTDIFF = 2VIN
–VOUT
1992 F07
VIN
VOCM
()
+VIN
;
=
= 2VIN
+ VOCM
1 –
()
1 –
()
RIN
RIN + RFB
RFB
RIN
VOCM LTC1992
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