LTC1992-2CMS8 Linear Technology, LTC1992-2CMS8 Datasheet - Page 37

• Manufacturer Part Number: LTC1992-2CMS8
• Description: IC AMP/DVR I/O GAIN OF 2 8MSOP
• Manufacturer: Linear Technology

Specifications of LTC1992-2CMS8

• Amplifier Type: Differential
• Number Of Circuits: 1
• Output Type: Differential, Rail-to-Rail
• Slew Rate: 1.5 V/µs
• Gain Bandwidth Product: 3.2MHz
• Current - Input Bias: 2pA
• Voltage - Input Offset: 250µV
• Current - Supply: 700µA
• Current - Output / Channel: 30mA
• Voltage - Supply, Single/dual (±): 2.7 V ~ 11 V, ±1.35 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• -3db Bandwidth: -

applicaTions inForMaTion
once the V
same as a standard noninverting op amp circuit multiplied
by two to account for the complementary output. Taking
R
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 V
at ground, also permits a rail-to-rail output swing in most
applications.
FB
to zero (i.e., taking β to one) gives the same formula
OCM
Figure 7. Asymmetrical Feedback Application Circuits (Most Suitable in Applications with Dual,
Split Supplies (e.g., ±5V), Ground Referenced Single-Ended Input Signals and V
voltage is set to zero, the gain formula is the
V
OCM
V
IN
V
V
OCM
OCM
V
V
R
R
IN
IN
IN
IN
R
FB
–
V
+
–
V
+
–
V
+
OCM
OCM
OCM
R
FB
+
–
+
–
+
–
LTC1992
LTC1992
LTC1992
1992 F07
+V
+V
+V
–V
–V
–V
OCM
OUT
OUT
OUT
OUT
OUT
OUT
V
SETTING V
V
V
SETTING V
V
V
SETTING V
V
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 V
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.
OUTDIFF
OUTDIFF
OUTDIFF
OUTDIFF
OUTDIFF
OUTDIFF
= 2(+V
= 2V
= 2
= 2V
= 2
= 2V
OCM
OCM
OCM
(
(
IN
IN
IN
+V
+V
= 0V
= 0V
= 0V
IN
( )
( )
IN
IN
1 –
1
– V
1
1 –
= 2V
OCM
– V
= 2V
OCM
IN
+ V
)
(
IN
1 +
OCM
OCM
)
( )
R
R
R
R
FB
; =
IN
)
FB
IN
OCM
at zero volts, the gain formula is the
)
; =
R
IN
LTC1992 Family
R
Connected to Ground)
R
+ R
IN
IN
R
FB
+ R
IN
FB

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