2

®

DEM-OPA68xU

PART

DESCRIPTION

Tantalum Chip Capacitor, SMD EIA size 3528, 20V

Multi-Layer Ceramic Chip Cap., SMD 1206, 50V

SMA or SMB Board Jack (Amphenol 901-144-8)

EMI-Suppression Ferrite Chip, SMD 1206

(Steward LI 1206 B 900 R)

Terminal Block, 3.5mm centers

(On-Shore Technology ED555/3DS)

Metal Film Chip Resistor, SMD 1206, 1/8W

TABLE II. Component Descriptions.

bypass between the supplies, which improves distortion

that can reduce interactions with the power supply at high

frequencies. If not desired, they can be replaced with 0

Ω

support op amps with special functions (see Table I).

Standard Current-Feedback Op Amps—These op amps

have the pinout shown in Figure 1. Table III shows typical

values used for these parts. To select component values for

DUAL SUPPLY

DUAL SUPPLY

SINGLE SUPPLY

COMPONENT

(G = +2)

(G = –1)

(G = +1)

49.9

Ω

57.6

Ω

49.9

Ω

10.0

Ω

Open

10.0

Ω

Open

10.0

Ω

Open

Open

402

Ω

Open

402

Ω

Open

Open

402

Ω

402

Ω

402

Ω

49.9

Ω

49.9

Ω

49.9

Ω

Open

Open

Open

2.2

µF

2.2

µF

2.2

µF

2.2

µF

2.2

µF

Open

0.01

µF

0.01

µF

Open

0.1

µF

0.1

µF0Ω

0.1

µF

0.1

µF

0.1

µF

Open

Open

Open

NOTE: The values and gains shown will not work for all current-feedback op

amps. See the data sheet to select proper values. The I/O impedances are 50

Ω.

DUAL SUPPLY

DUAL SUPPLY

SINGLE SUPPLY

COMPONENT

(G = +2)

(G = –1)

(G = +1)

49.9

Ω

57.6

Ω

49.9

Ω

178

Ω

Open

0

Ω

Open

210

Ω

Open

Open

402

Ω

Open

402

Ω

Open

Open

402

Ω

402

Ω

24.9

Ω

49.9

Ω

49.9

Ω

49.9

Ω

Open

Open

Open

2.2

µF

2.2

µF

2.2

µF

2.2

µF

2.2

µF

Open

0.01

µF

0.01

µF

Open

0.1

µF

0.1

µF0Ω

0.1

µF

0.1

µF

0.1

µF

Open

Open

Open

NOTE: The values and gains shown will not work for all voltage-feedback op

amps. See the individual op amp data sheet to select proper values. The I/O

impedances are 50

Ω.

TABLE IV. Standard Voltage-Feedback Op Amps.

TABLE V. OPA628U and OPA64xU Changes.

DUAL SUPPLY

DUAL SUPPLY

SINGLE SUPPLY

COMPONENT

(G = )+2

(G = –1)

(G = +1)

0

Ω

0

Ω

0

Ω

4.7

µF

4.7

µF

4.7

µF

4.7

µF

4.7

µF

Open

0.1

µF

0.1

µF0Ω

0.1

µF

0.1

µF

0.1

µF

OPA63xU—Pin 8 disables the output when high (OPA632

and OPA635). Table VII shows different ways to set up pin

components, except for the changes shown in Table VI; note

these are all single supply configurations.

SINGLE SUPPLY SINGLE SUPPLY SINGLE SUPPLY

COMPONENT

(G = +2)

(G = –1)

(G = +1)

0

Ω

0

Ω

0

Ω

TABLE VI. OPA63xU Changes.

TABLE III. Standard Current-Feedback Op Amps.

Standard Voltage-Feedback Op Amps—These op amps

have the pinout shown in Figure 1. Table IV shows typical

values used for these parts. To select component values for

your op amp, consult its data sheet.

OPA628U and OPA64xU—These op amps have additional

supply pins (see Table I) to improve distortion. Use the

values in Table IV, except for the changes shown in Table

V (the OPA64xP family will function without these changes,

but with reduced distortion performance).

CONFIGURATION

External Source

Open

49.9

Ω

On

Open

0

Ω

Off

0

Ω

Open

CONFIGURATION

External Source

Open

49.9

Ω

Open

On

Open

Open

0.1

µF

Off

Open

0

Ω

Open

TABLE VII. Disable Pin—OPA632U and OPA635U.

TABLE VIII. Disable Pin—OPA68xU.

OPA680U—Pin 8 disables the output when low. Table VIII