EL5164 Intersil Corporation, EL5164 Datasheet - Page 9

• Manufacturer Part Number: EL5164
• Description: 600MHz Current Feedback Amplifiers with Enable
• Manufacturer: Intersil Corporation

Pin Descriptions
Applications Information
Product Description
The EL5164, EL5165, and EL5364 are current-feedback
operational amplifiers that offers a wide -3dB bandwidth of
600MHz and a low supply current of 5mA per amplifier. The
EL5164, EL5165, and EL5364 work with supply voltages
ranging from a single 5V to 10V and they are also capable of
swinging to within 1V of either supply on the output. Because
of their current-feedback topology, the EL5164, EL5165, and
EL5364 do not have the normal gain-bandwidth product
associated with voltage-feedback operational amplifiers.
Instead, its -3dB bandwidth to remain relatively constant as
closed-loop gain is increased. This combination of high
bandwidth and low power, together with aggressive pricing
make the EL5164, EL5165, and EL5364 ideal choices for
many low-power/high-bandwidth applications such as
portable, handheld, or battery-powered equipment.
For varying bandwidth needs, consider the EL5166 and
EL5167 with 1GHz on a 8.5mA supply current or the EL5162
and EL5163 with 300MHz on a 8.5mA supply current.
(8-PIN SO)
EL5164
1, 5
2
3
4
6
7
8
SOT-23)
EL5164
(6-PIN
4
3
2
1
6
5
SOT-23)
EL5165
(5-PIN
9
4
3
2
1
5
PIN NAME
OUT
VS+
IN+
VS-
NC
IN-
CE
EL5164, EL5165, EL5364
Negative supply
Not connected
Inverting input
Non-inverting input
Output
Positive supply
Chip enable, allowing the pin to float
or applying a low logic level will
enable the amplifier.
FUNCTION
Versions include single, dual, and triple amp packages with
5-pin SOT-23, 16-pin QSOP, and 8-pin or 16-pin SO
outlines.
Power Supply Bypassing and Printed Circuit
Board Layout
As with any high frequency device, good printed circuit
board layout is necessary for optimum performance. Low
impedance ground plane construction is essential. Surface
mount components are recommended, but if leaded
components are used, lead lengths should be as short as
possible. The power supply pins must be well bypassed to
reduce the risk of oscillation. The combination of a 4.7µF
tantalum capacitor in parallel with a 0.01µF capacitor has
been shown to work well when placed at each supply pin.
For good AC performance, parasitic capacitance should be
kept to a minimum, especially at the inverting input. (See the
Capacitance at the Inverting Input section.) Even when
ground plane construction is used, it should be removed
from the area near the inverting input to minimize any stray
capacitance at that node. Carbon or Metal-Film resistors are
(See circuit 1)
IN+
CE
EQUIVALENT CIRCUIT
Circuit 1
Circuit 2
Circuit 3
V
OUT
V
S
S
+
-
V
V
S
S
V
V
+
-
S
IN-
S
+
-