AD8655ARZ Analog Devices Inc, AD8655ARZ Datasheet - Page 15

• Manufacturer Part Number: AD8655ARZ
• Description: IC OPAMP GP R-R CMOS 28MHZ 8SOIC
• Manufacturer: Analog Devices Inc
• Series: DigiTrim®r

Specifications of AD8655ARZ

• Slew Rate: 11 V/µs
• Design Resources: Single Supply Low Noise LED Current Source Driver Using a Current Output DAC in the Reverse Mode (CN0139)
• Amplifier Type: General Purpose
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Gain Bandwidth Product: 28MHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 50µV
• Current - Supply: 3.7mA
• Current - Output / Channel: 220mA
• Voltage - Supply, Single/dual (±): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Op Amp Type: Precision
• No. Of Amplifiers: 1
• Bandwidth: 28MHz
• Supply Voltage Range: 2.7V To 5.5V
• Amplifier Case Style: SOIC
• No. Of Pins: 8
• Common Mode Rejection Ratio: 120
• Current, Input Bias: 3.3 μA
• Current, Input Offset: 25 nA
• Current, Output: 50 mA
• Current, Supply: 7.5 mA
• Harmonic Distortion: -78 dB
• Impedance, Thermal: 155 °C/W
• Number Of Amplifiers: Dual
• Package Type: SOIC-8
• Resistance, Input: 300 Kilohms
• Temperature, Operating, Range: -40 to +85 °C
• Voltage, Input: -13.4 to +14.3 V (Common-Mode)
• Voltage, Noise: 15 nV/sqrt Hz
• Voltage, Offset: 0.5 mV
• Voltage, Output, High: +13.7 V
• Voltage, Output, Low: -13.7 V
• Voltage, Supply: ±15 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

THEORY OF OPERATION
The AD8655/AD8656 amplifiers are voltage feedback, rail-to-
rail input and output precision CMOS amplifiers, which operate
from 2.7 V to 5.0 V of power supply voltage. These amplifiers
use the Analog Devices DigiTrim technology to achieve a
higher degree of precision than is available from most CMOS
amplifiers. DigiTrim technology, used in a number of ADI
amplifiers, is a method of trimming the offset voltage of the
amplifier after it is packaged. The advantage of post-package
trimming is that it corrects any offset voltages caused by the
mechanical stresses of assembly.
The AD8655/AD8656 are available in standard op amp pinouts,
making DigiTrim completely transparent to the user. The input
stage of the amplifiers is a true rail-to-rail architecture, allowing
the input common-mode voltage range of the amplifiers to
extend to both positive and negative supply rails. The open-
loop gain of the AD8655/AD8656 with a load of 10 kΩ is
typically 110 dB.
Rev. A | Page 15 of 20
The AD8655/AD8656 can be used in any precision op amp
application. The amplifier does not exhibit phase reversal for
common-mode voltages within the power supply. The
AD8655/AD8656 are great choices for high resolution data
acquisition systems with voltage noise of 2.7 nV/√Hz and
THD + Noise of –103 dB for a 2 V p-p signal at 10 kHz. Their
low noise, sub-pA input bias current, precision offset, and high
speed make them superb preamps for fast filter applications.
The speed and output drive capability of the AD8655/AD8656
also make them useful in video applications.
AD8655/AD8656