EL2227CSZ Intersil, EL2227CSZ Datasheet - Page 12

• Manufacturer Part Number: EL2227CSZ
• Description: IC AMP DUAL LN 8-SOIC
• Manufacturer: Intersil

Specifications of EL2227CSZ

• Amplifier Type: Voltage Feedback
• Number Of Circuits: 2
• Slew Rate: 50 V/µs
• Gain Bandwidth Product: 137MHz
• -3db Bandwidth: 115MHz
• Current - Input Bias: 3.4µA
• Voltage - Input Offset: 200µV
• Current - Supply: 4.8mA
• Current - Output / Channel: 180mA
• 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)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -

EL2227CS
EL2227CY
Single-Supply Operation
The EL2227s have been designed to have a wide input and
output voltage range. This design also makes the EL2227 an
excellent choice for single-supply operation. Using a single
positive supply, the lower input voltage range is within
200mV of ground (R
range is within 875mV of ground. Upper input voltage range
reaches 3.6V, and output voltage range reaches 3.8V with a
5V supply and R
swing on a single 5V supply. This wide output voltage range
also allows single-supply operation with a supply voltage as
high as 28V.
Gain-Bandwidth Product and the -3dB Bandwidth
The EL2227s have a gain-bandwidth product of 137MHz
while using only 5mA of supply current per amplifier. For
gains greater than 2, their closed-loop -3dB bandwidth is
approximately equal to the gain-bandwidth product divided
by the noise gain of the circuit. For gains less than 2, higher
order poles in the amplifiers' transfer function contribute to
even higher closed loop bandwidths. For example, the
EL2227 have a -3dB bandwidth of 115MHz at a gain of +2,
dropping to 28MHz at a gain of +5. It is important to note that
the EL2227 have been designed so that this “extra”
bandwidth in low-gain applications does not come at the
expense of stability. As seen in the typical performance
curves, the EL2227 in a gain of +2 only exhibit 0.5dB of
peaking with a 1000Ω load.
Output Drive Capability
The EL2227s have been designed to drive low impedance
loads. They can easily drive 6V
high output drive capability makes the EL2227 an ideal
choice for RF, IF and video applications.
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
PART
PACKAGE
MSOP8
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
SO8
L
= 500Ω. This results in a 2.625V output
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
L
= 500Ω), and the lower output voltage
For information regarding Intersil Corporation and its products, see www.intersil.com
160°C/W 0.406W @ +85°C
206°C/W 0.315W @ +85°C
TABLE 1.
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12
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into a 500Ω load. This
MAX PDISS @
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MAX
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EL2227
Printed-Circuit Layout
The EL2227s are well behaved, and easy to apply in most
applications. However, a few simple techniques will help
assure rapid, high quality results. As with any high-frequency
device, good PCB layout is necessary for optimum
performance. Ground-plane construction is highly
recommended, as is good power supply bypassing. A 0.1µF
ceramic capacitor is recommended for bypassing both
supplies. Lead lengths should be as short as possible, and
bypass capacitors should be as close to the device pins as
possible. For good AC performance, parasitic capacitances
should be kept to a minimum at both inputs and at the
output. Resistor values should be kept under 5kΩ because
of the RC time constants associated with the parasitic
capacitance. Metal-film and carbon resistors are both
acceptable, use of wire-wound resistors is not recommended
because of their parasitic inductance. Similarly, capacitors
should be low-inductance for best performance.
September 14 ,2010
FN7058.4