ADA4075-2ACPZ-RL Analog Devices Inc, ADA4075-2ACPZ-RL Datasheet - Page 17

• Manufacturer Part Number: ADA4075-2ACPZ-RL
• Description: Low Noise/Power 36V OpAmp
• Manufacturer: Analog Devices Inc
• Series: iPolar®r

Specifications of ADA4075-2ACPZ-RL

• 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: 300µV
• 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-LFCSP
• 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