AD8627ARZ Analog Devices Inc, AD8627ARZ Datasheet - Page 13

• Manufacturer Part Number: AD8627ARZ
• Description: IC OPAMP JFET 5MHZ PREC LP 8SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD8627ARZ

• Slew Rate: 5 V/µs
• Design Resources: 4 mA to 20 mA Process Control Loop Using AD5662 (CN0009)
• Amplifier Type: J-FET
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Gain Bandwidth Product: 5MHz
• Current - Input Bias: 0.25pA
• Voltage - Input Offset: 350µV
• Current - Supply: 710µA
• Current - Output / Channel: 15mA
• Voltage - Supply, Single/dual (±): 5 V ~ 26 V, ±2.5 V ~ 13 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Op Amp Type: Precision
• No. Of Amplifiers: 1
• Bandwidth: 5MHz
• Supply Voltage Range: 5V To 26V
• Amplifier Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

APPLICATIONS INFORMATION
The AD862x is one of the smallest and most economical
JFETs offered. It has true single-supply capability and has
an input voltage range that extends below the negative rail,
allowing the part to accommodate input signals below ground.
The rail-to-rail output of the AD862x provides the maximum
dynamic range in many applications. To provide a low offset,
low noise, high impedance input stage, the AD862x uses
n-channel JFETs. The input common-mode voltage extends
from 0.2 V below –V
the amplifier, configured in the unity gain buffer, closer than
2 V to the positive rail causes an increase in common-mode
voltage error, as illustrated in Figure 15, and a loss of amplifier
bandwidth. This loss of bandwidth causes the rounding of the
output waveforms shown in Figure 39 and Figure 40, which
have inputs that are 1 V and 0 V from +V
The AD862x does not experience phase reversal with input
signals close to the positive rail, as shown in Figure 29. For
input voltages greater than +V
AD862x’s noninverting input prevents phase reversal at the
expense of greater input voltage noise. This current-limiting
resistor should also be used if there is a possibility of the input
voltage exceeding the positive supply by more than 300 mV, or
if an input voltage is applied to the AD862x when ±V
Either of these conditions damages the amplifier if the
condition exists for more than 10 seconds. A 100 kΩ resistor
allows the amplifier to withstand up to 10 V of continuous
overvoltage, while increasing the input voltage noise by a
negligible amount.
S
to 2 V below +V
SY
, a resistor in series with the
S
. Driving the input of
S
, respectively.
SY
= 0.
Rev. E | Page 13 of 20
5V
0V
4V
0V
4V
0V
0V
4V
Figure 39. Unity Gain Follower Response to 0 V to 4 V Step
Figure 40. Unity Gain Follower Response to 0 V to 5 V Step
V
V
SY
SY
= 5V
= 5V
OUTPUT
OUTPUT
INPUT
INPUT
AD8625/AD8626/AD8627
TIME (2
TIME (2
μ
μ
s/DIV)
s/DIV)