HFA1112IB Intersil, HFA1112IB Datasheet - Page 5

• Manufacturer Part Number: HFA1112IB
• Description: IC BUFFER 850MHZ 8-SOIC
• Manufacturer: Intersil

Specifications of HFA1112IB

• Amplifier Type: Buffer
• Number Of Circuits: 1
• Slew Rate: 2400 V/µs
• -3db Bandwidth: 850MHz
• Current - Input Bias: 25µA
• Voltage - Input Offset: 8000µV
• Current - Supply: 21mA
• Current - Output / Channel: 60mA
• Voltage - Supply, Single/dual (±): 9 V ~ 11 V, ±4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Output Type: -
• Gain Bandwidth Product: -

(as illustrated in the curves), the maximum bandwidth is
obtained without sacrificing stability. Even so, bandwidth
does decrease as you move to the right along the curve.
For example, at A
bandwidth is limited to 300MHz, and bandwidth drops to
100MHz at A
FIGURE 1. RECOMMENDED SERIES OUTPUT RESISTOR vs
10µF
50
45
40
35
30
25
20
15
10
IN
5
0
0
or 0Ω (A
A
∞ (A
V
0.1µF
= +2
40
V
R
LOAD CAPACITANCE
V
50Ω
1
= +1)
= +1, R
V
A
V
= +2)
80
V
= +1
= +1, R
-5V
120
LOAD CAPACITANCE (pF)
S
1
2
3
4
= 5Ω, C
160
S
= 50Ω, C
5
200
L
= 340pF.
GND
FIGURE 2. EVALUATION BOARD SCHEMATIC AND LAYOUT
240
8
7
6
5
L
= 30pF, the overall
50Ω
280 320
0.1µF
V
H
GND
OUT
V
360 400
L
10µF
+5V
HFA1112
+IN
Evaluation Board
The performance of the HFA1112 may be evaluated using
the HFA11XX Evaluation Board, slightly modified as follows:
The layout and modified schematic of the board are shown in
Figure 2.
To order evaluation boards (part number HFA11XXEVAL),
please contact your local sales office.
1. Remove the 500Ω feedback resistor (R
2. a. For A
TOP LAYOUT
connection open.
b. For A
resistor (R
a 0Ω resistor to GND.
1
V
H
V
V
V
= +2, replace the 500Ω gain setting resistor with
= +1 evaluation, remove the 500Ω gain setting
L
OUT
V-
1
GND
), and leave pin 2 floating.
V+
BOTTOM LAYOUT
2
), and leave the