ADA4075-2ARZ-R7 Analog Devices Inc, ADA4075-2ARZ-R7 Datasheet - Page 20
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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
ADA4075-2
LOW NOISE PARAMETRIC EQUALIZER
The circuit in Figure 69 is a reciprocal parametric equalizer
yielding ±20 dB of cut or boost with variable bandwidth and
frequency. The frequency control range is 6.9:1, with the geometric
mean center frequency conveniently occurring at the midpoint
of the potentiometer setting. The center frequency is equal to
48 Hz/Ct, where Ct is the value of C1 and C2 in microfarads.
*THE CENTER FREQUENCY IS AFFECTED BY THE VALUE OF C1 AND C2
1.5kΩ
2.5kΩ
(SEE THE LOW NOISE PARAMETRIC EQUALIZER SECTION FOR MORE DETAILS).
IN
47µF
2.5kΩ
1/2
ADA4075-2
ADA4075-2
6.2kΩ
BOOST
2.5kΩ
620Ω
6.2kΩ
620Ω
Figure 69. Low Noise Parametric Equalizer
5kΩ
1/2
1.5kΩ
1.3kΩ
CUT
FREQUENCY (GANGED POTENTIOMETER)
Rev. A | Page 20 of 24
OUT
1/2
C1*
ADA4075-2
2.7kΩ
BANDWIDTH
The bandwidth control adjusts the Q from 0.9 to about 11. The
overall noise is setting dependent, but with all controls centered,
it is about −104 dBV in a 20 kHz bandwidth. Such a low noise
level can obviate the need for a bypass switch in many applications.
2.5kΩ
620Ω
100Ω
1kΩ
1.3kΩ
1/2
ADA4075-2
C2*