ADA4075-2ARZ Analog Devices Inc, ADA4075-2ARZ Datasheet - Page 20

• Manufacturer Part Number: ADA4075-2ARZ
• Description: IC OPAMP GP 6.5MHZ DUAL LN 8SOIC
• Manufacturer: Analog Devices Inc
• Series: iPolar®r

Specifications of ADA4075-2ARZ

• Slew Rate: 12 V/µs
• Amplifier Type: General Purpose
• Number Of Circuits: 2
• 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)
• Op Amp Type: Low Noise
• No. Of Amplifiers: 2
• Bandwidth: 6.5MHz
• Supply Voltage Range: ± 4.5V To ± 18V
• Amplifier Case Style: SOIC
• No. Of Pins: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, 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*