AD8131AR-REEL7 Analog Devices Inc, AD8131AR-REEL7 Datasheet - Page 19

• Manufacturer Part Number: AD8131AR-REEL7
• Description: IC AMP DIFF LDIST 60MA 8SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD8131AR-REEL7

• Rohs Status: RoHS non-compliant
• Amplifier Type: Differential
• Number Of Circuits: 1
• Output Type: Differential
• Slew Rate: 2000 V/µs
• -3db Bandwidth: 400MHz
• Current - Input Bias: 500nA
• Voltage - Input Offset: 1500µV
• Current - Supply: 11.5mA
• Current - Output / Channel: 60mA
• Voltage - Supply, Single/dual (±): 2.8 V ~ 11 V, ±1.4 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Gain Bandwidth Product: -

UNITY-GAIN, SINGLE-ENDED-TO-DIFFERENTIAL
DRIVER
If it is not necessary to offset the output common-mode voltage
(via the V
gain single-ended-to-differential amplifier that does not require
any external components. Figure 43 shows the schematic for
this circuit.
–100
–110
–120
–10
–20
–30
–40
–50
–60
–70
–80
–90
10
0
2.0
OCM
2.1
pin), then the AD8131 can make a simple unity-
Figure 42. FFT Plot for AD8131/AD9203
2.2
2.3
FREQUENCY (MHz)
2.4
2.5
2.6
2.7
2.8
2.9
3.0
Rev. B | Page 19 of 20
As shown above, when −D
feedback of +OUT to −IN via the internal feedback resistor.
This contrasts with the typical gain of 2 operation where −D
grounded and one third of the +OUT is fed back to −IN. The
result is a closed-loop differential gain of 1.
Upon careful observation, it can be seen that only +D
are referenced to ground. The ground voltage at V
reference for this circuit. In this unity gain configuration, if a dc
voltage is applied to V
differential dc voltage will be created at the output, along with the
common-mode voltage change. Thus, this configuration cannot
be used when it is desired to offset the common-mode voltage of
the output with respect to the input at +D
Figure 43. Unity Gain, Single-Ended-to-Differential Amplifier
49.9Ω
8
2
1
+5V
AD8131
–5V
OCM
3
6
to shift the common-mode voltage, a
4
5
IN
0.1 F
0.1 F
is left floating, there is 100%
+
+
10 F
10 F
IN
.
OCM
IN
AD8131
is the
and V
–
+OUT
INPUT
OUT
OCM
IN
is