ADA4075-2ARZ-R7 Analog Devices Inc, ADA4075-2ARZ-R7 Datasheet - Page 17
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ADA4075-2ARZ-R7
Manufacturer Part Number
ADA4075-2ARZ-R7
Description
Low Noise/Power 36V OpAmp
Manufacturer
Analog Devices Inc
Series
iPolar®r
Datasheet
1.ADA4075-2ACPZ-R7.pdf
(24 pages)
Specifications of ADA4075-2ARZ-R7
Amplifier Type
General Purpose
Number Of Circuits
2
Slew Rate
12 V/µs
Gain Bandwidth Product
6.5MHz
Current - Input Bias
30nA
Voltage - Input Offset
200µV
Current - Supply
1.8mA
Current - Output / Channel
40mA
Voltage - Supply, Single/dual (±)
±4.5 V ~ 18 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Type
-
-3db Bandwidth
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
DAC OUTPUT FILTER
The ultralow voltage noise, low distortion, and high slew rate of
the ADA4075-2 make it an ideal choice for professional audio
signal processing. Figure 66 shows the ADA4075-2 used in a
typical audio DAC output filter configuration. The differential
outputs of the DAC are fed into the ADA4075-2. The ADA4075-2
is configured as a differential Sallen-Key filter. It operates as an
external low-pass filter to remove high frequency noise present
on the output pins of the DAC. It also provides differential-to-
single-ended conversion from the differential outputs of the DAC.
DAC OUTN
DAC OUTP
5.62kΩ
11kΩ
Figure 66. Typical DAC Output Filter Circuit (Differential)
560pF
5.62kΩ
Rev. A | Page 17 of 24
270pF
3.01kΩ
1.5kΩ
11kΩ
150pF
68pF
1/2
ADA4075-2
For a DAC output filter, an op amp with reasonable slew rate and
bandwidth is required. The ADA4075-2 has a high slew rate of the
12 V/μs and a relatively wide bandwidth of 6.5 MHz. The cutoff
frequency of the low-pass filter is approximately 167 kHz. In
addition, the 100 kΩ − 47 μF RC network provides ac coupling
to block out the dc components at the output.
100Ω
2.2nF
47µF
100kΩ
OUTPUT
ADA4075-2