AD8034ARZ Analog Devices Inc, AD8034ARZ Datasheet - Page 22

• Manufacturer Part Number: AD8034ARZ
• Description: IC OPAMP VF R-R DUAL LN LP 8SOIC
• Manufacturer: Analog Devices Inc
• Series: FastFET™r

Specifications of AD8034ARZ

• Slew Rate: 80 V/µs
• Amplifier Type: Voltage Feedback
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• -3db Bandwidth: 80MHz
• Current - Input Bias: 1.5pA
• Voltage - Input Offset: 1000µV
• Current - Supply: 3.3mA
• Current - Output / Channel: 60mA
• Voltage - Supply, Single/dual (±): 5 V ~ 24 V, ±2.5 V ~ 12 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Op Amp Type: Voltage Feedback
• No. Of Amplifiers: 2
• Bandwidth: 80MHz
• Supply Voltage Range: 5V To 24V
• Amplifier Case Style: SOIC
• No. Of Pins: 8
• Common Mode Rejection Ratio: -100
• Current, Input Bias: 1 pA
• Current, Output: 40 mA
• Current, Supply: 3.3 mA
• Harmonic Distortion: -81 dBc
• Impedance, Thermal: 125 °C/W
• Number Of Amplifiers: Dual
• Package Type: SOIC-8
• Resistance, Input: 1000 Gigaohms
• Temperature, Operating, Range: -40 to +85 °C
• Voltage, Input: 2 V (Common-Mode)
• Voltage, Noise: 11 nV/sqrt Hz
• Voltage, Offset: 1.5 mV
• Voltage, Output, High: +4.95 V
• Voltage, Output, Low: -4.95 V
• Voltage, Supply: ±5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Gain Bandwidth Product: -
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

AD8033/AD8034
The output noise over frequency of the preamp is shown in
Figure 63.
The pole in the loop transmission translates to a zero in the
noise gain of the amplifier, leading to an amplification of the
input voltage noise over frequency. The loop transmission zero
introduced by C
noise gain extends past the preamp signal bandwidth and is
eventually rolled off by the decreasing loop gain of the amplifier.
Keeping the input terminal impedances matched is recommended
to eliminate common-mode noise peaking effects that add to
the output noise.
Integrating the square of the output voltage noise spectral density
over frequency and then taking the square root results in the
total rms output noise of the preamp.
F
limits the amplification. The bandwidth of the
Rev. D | Page 22 of 24
VEN
f
1
RF NOISE
Figure 63. Photodiode Voltage Noise Contributions
NOISE DUE TO AMPLIFIER
f
f
f
f
2
1
2
3
=
=
=
2πR
2πR
(C
S
1
+ C
F
F
(C
C
FREQUENCY (Hz)
F
M
F
+ 2C
VEN (C
+ C
f
CR
1
S
D
+ C
+ C
F
M
+ C
F
+ 2C
)/C
S
F
+ C
D
)
M
+ 2C
D
)/C
F
f
3