Datasheet

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Components
R
1
and R
7
set the I/O impedance, R
2
through R
6
set the gain, and C
1
through C
5
are supply bypass
capacitors. C
3
is optional; it adds a bypass between the supplies that improves distortion performance for
some models. L
1
and L
2
are ferrite chips that can reduce interactions with the power supply at high
frequencies. If not desired, they can be replaced with 0 Ω resistors. R
8
through R
13
, C
6
and C
7
are optional
components that support op amps with special functions.
For single-supply operation, do not connect L
2
; otherwise, the –V
S
input to P
1
would be at ground
potential.
Op Amp with Standard SO-8 Pinout—These op amps have the pinout shown in Figure 1 a. Table 2
shows typical values used for these parts. To select component values for your specific op amp
(especially R
6
), consult its data sheet.
Table 2. Op Amp with Standard SO-8 Pinout
(1)
SINGLE-
DUAL-SUPPLY DUAL-SUPPLY SUPPLY
COMPONENT (G = +2) (G = –1) (G = +1)
R
1
49.9 Ω 57.6 Ω 49.9 Ω
R
2
10.0 Ω Open 10.0 Ω
R
3
Open 10.0 Ω Open
R
4
Open 402 Ω Open
R
5
402 Ω Open Open
R
6
402 Ω 402 Ω 402 Ω
R
7
49.9 Ω 49.9 Ω 49.9 Ω
R
8
– R
13
Open Open Open
C
1
2.2 µ F 2.2 µ F 2.2 µ F
C
2
2.2 µ F 2.2 µ F Open
C
3
0.01 µ F 0.01 µ F Open
C
4
0.1 µ F 0.1 µ F 0 Ω
C
5
0.1 µ F 0.1 µ F 0.1 µ F
C
6
, C
7
Open Open Open
(1)
The values and gains shown will not work for all op amps. See the
data sheet to select proper values. The I/O impedances are 50 Ω .
SBOU009A – June 1998 – Revised March 2006 DEM-OPA-SO-1A Demonstration Fixture 3
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