AD8130ARM Analog Devices Inc, AD8130ARM Datasheet - Page 37
![IC AMP DIFF LN LDIST 40MA 8MSOP](/photos/1/38/13894/rm-8_sml.jpg)
AD8130ARM
Manufacturer Part Number
AD8130ARM
Description
IC AMP DIFF LN LDIST 40MA 8MSOP
Manufacturer
Analog Devices Inc
Type
Diff Receiverr
Datasheet
1.AD8129ARZ.pdf
(40 pages)
Specifications of AD8130ARM
Slew Rate
1100 V/µs
Mounting Type
Surface Mount
Rohs Status
RoHS non-compliant
Design Resources
High CMRR Circuit for Converting Wideband Complementary DAC Outputs to Single-Ended Without Precision Resistors (CN0142)
Amplifier Type
Differential
Number Of Circuits
1
-3db Bandwidth
290MHz
Current - Input Bias
500nA
Voltage - Input Offset
400µV
Current - Supply
13mA
Current - Output / Channel
40mA
Voltage - Supply, Single/dual (±)
4.5 V ~ 25.2 V, ±2.25 V ~ 12.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
No. Of Amplifiers
1
Bandwidth
270MHz
No. Of Pins
8
Settling Time
20ns
Operating Temperature Max
85°C
Peak Reflow Compatible (260 C)
No
Number Of Channels
1
Number Of Elements
1
Power Supply Requirement
Single/Dual
Common Mode Rejection Ratio
86dB
Voltage Gain Db
71dB
Unity Gain Bandwidth Product (typ)
110MHz
Input Resistance
6@5VMohm
Input Offset Voltage
1.8@5VmV
Input Bias Current
2@5VnA
Single Supply Voltage (typ)
5/9/12/15/18/24V
Dual Supply Voltage (typ)
±3/±5/±9/±12V
Rail/rail I/o Type
No
Single Supply Voltage (min)
4.5V
Single Supply Voltage (max)
25.2V
Dual Supply Voltage (min)
±2.25V
Dual Supply Voltage (max)
±12.6V
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Surface Mount
Pin Count
8
Package Type
MSOP
Output Type
-
Gain Bandwidth Product
-
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8130ARM
Manufacturer:
ADI/亚德诺
Quantity:
20 000
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AD
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Manufacturer:
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Part Number:
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Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
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Manufacturer:
AD
Quantity:
11 492
Another problem can occur with the AD8129 operating
at a supply voltage of greater than or equal to ±12 V. The
architecture causes the supply current to increase as the input
differential voltage increases. If the AD8129 differential inputs
are overdriven too far, excessive current can flow into the device
and potentially cause permanent damage.
A practical means to prevent this from occurring is to clamp the
inputs differentially with a pair of antiparallel Schottky diodes
(see Figure 146). These diodes have a lower forward voltage of
approximately 0.4 V. If the differential voltage across the inputs
is restricted to these conditions, no excess current is drawn by
the AD8129 under these operating conditions.
If the supply voltage is restricted to less than ±11 V, the internal
clamping circuit limits the differential voltage and excessive
supply current is not drawn. The external clamp circuit is not
needed.
In both circuits, the input series resistors function to limit the
current through the diodes when they are forward biased. As a
practical matter, these resistors must be matched so that the
CMRR is preserved at high frequencies. These resistors have
minimal effect on the CMRR at low frequency.
POWER DISSIPATION
The AD8129/AD8130 can operate with supply voltages from
+5 V to ±12 V. The major reason for such a wide supply range is
to provide a wide input common-mode range for systems that
can require this. This would be encountered when significant
common-mode noise couples into the input path. For applications
that do not require a wide dynamic range for the input or output, it
is recommended to operate with lower supply voltages.
The AD8129/AD8130 is also available in a very small 8-lead
MSOP package. This package has higher thermal impedance
than larger packages and operates at a higher temperature with
the same amount of power dissipation. Certain operating
conditions that are within the specifications range of the parts can
cause excess power dissipation. Caution should be exercised.
V
V
IN
HSMS 2822
IN
AGILENT
Figure 146. Schottky Diodes Across the Inputs
1
3
Limits the Input Differential Voltage
AD8129
2
1
4
5
8
+
+
PD
3
–V
–V
2
S
+V
+V
7
S
6
0.1 μ F
0.1 μ F
V
10 μ F
OUT
10 μ F
Rev. C | Page 37 of 40
The power dissipation is a function of several operating
conditions, including the supply voltage, the input differential
voltage, the output load, and the signal frequency.
A basic starting point is to calculate the quiescent power
dissipation with no signal and no differential input voltage.
This is just the product of the total supply voltage and the
quiescent operating current. The maximum operating supply
voltage is 26.4 V, and the quiescent current is 13 mA. This
causes a quiescent power dissipation of 343 mW. For the
MSOP package, the θ
the quiescent power causes about a 49°C rise above ambient
in the MSOP package.
The current consumption is also a function of the differential
input voltage (see Figure 113 and Figure 114). This current
should be added onto the quiescent current and then multiplied
by the total supply voltage to calculate the power.
The AD8129/AD8130 can directly drive loads of as low as
100 Ω, such as a terminated 50 Ω cable. The worst-case power
dissipation in the output stage occurs when the output is at
midsupply. As an example, for a 12 V supply with the output
driving a 250 Ω load to ground, the maximum power dissipation
in the output occurs when the output voltage is 6 V. The load
current is 6 V/250 Ω = 24 mA. This same current flows through
the output across a 6 V drop from V
the 8-lead MSOP package, this causes a temperature rise of
20°C above ambient. Although this is a worst-case number, it is
apparent that this can be a considerable additional amount of
power dissipation.
Several changes can be made to alleviate this. One is to use the
standard 8-lead SOIC package. This lowers the thermal impedance
to 121°C/W, which is a 15% improvement. Another is to use a
lower supply voltage unless absolutely necessary.
Finally, do not use the AD8129/AD8130 when it is operating on
high supply voltages to directly drive a heavy load. It is best to
use a second op amp after the output stage. Some of the gain
can be shifted to this stage so that the signal swing at the output
of the AD8129/AD8130 is not too large.
JA
specification is 142°C/W. Therefore,
S
. It dissipates 144 mW. For
AD8129/AD8130