LMH730121 National Semiconductor, LMH730121 Datasheet

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LMH730121

Manufacturer Part Number
LMH730121
Description
BOARD EVAL FOR 8SOIC DUAL OPAMPS
Manufacturer
National Semiconductor
Datasheet

Specifications of LMH730121

Channels Per Ic
2 - Dual
Amplifier Type
General Purpose
Board Type
Bare (Unpopulated)
Utilized Ic / Part
8-PSOP Package
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Operating Temperature
-
Output Type
-
Current - Output / Channel
-
Voltage - Supply, Single/dual (±)
-
-3db Bandwidth
-
Slew Rate
-
Current - Supply (main Ic)
-
The CLC730121 evaluation board is designed to aid in the characterization of National’s 8-pin Dual Op Amps in PSOP
package. This board uses all surface-mount components for maximum speed and performance.
Figure 1 shows the schematic:
This board is designed with versatility in mind; that is, by selective insertion of components, the device can be put into an
Inverting, non-inverting, or differential configuration. In addition, single supply operation can be tested with simple board
modifications (please see below).
Please note that R11 is installed on the circuit side of the board in order to minimize its lead lengths. C5-8 (4 places) are
de-coupling caps essential to be installed for good high frequency behavior. 0.1 F and 6.8 F are good values in most
cases. Note that C7-8 are polar caps. Use Tantalum capacitors for lowest ESR.
The CLC730121 evaluation board uses a thermally dissipating pad soldered to the exposed die attach paddle (DAP) of
the device under test (DUT) to enable heat transfer out of the package. Normally this DAP would be soldered during
manufacturing with a process like vapor phase. For lab evaluation, use a thermally conductive epoxy or thermal grease
between the DAP and the board to help conduct heat out of the package.
SINGLE SUPPLY OPERATION:
In order to allow maximum flexibility, it is possible to test the Op Amp in a single supply arrangement as well. To do so,
R16, R17, and C9 can be installed to form a “virtual ground” which would be tied to the non-inverting terminal as biasing.
A convenient way to connect C9 (positive side) to the inputs is by performing the following:
1. Cut R7 and R10 connection to ground plane, on circuit side.
2. Install 0 resistances for R7 and R10
3. Tie C9 (positive side) to the cut side of R7 and R10.
2001 National Semiconductor Corporation
Figure 1: Complete Evaluation Board Schematic
.
8-pin Thermally Enhanced SOIC (PSOP)
Dual Op Amp Evaluation Board
www.national.com
Part Number CLC730121
June 2001

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LMH730121 Summary of contents

Page 1

... A convenient way to connect C9 (positive side) to the inputs is by performing the following: 1. Cut R7 and R10 connection to ground plane, on circuit side. 2. Install 0 resistances for R7 and R10 3. Tie C9 (positive side) to the cut side of R7 and R10. 2001 National Semiconductor Corporation 8-pin Thermally Enhanced SOIC (PSOP) . Figure 1: Complete Evaluation Board Schematic ...

Page 2

... DAP connection from ground and tie each device for information on DAP connection and whether this modification is required for the particular device. MODIFICATIONS TO ISOLATE HEATSINK FROM GND AND TIE 2001 National Semiconductor Corporation - (see below for modifications needed to the board) - instead (see instructions below) ...

Page 3

... National Semiconductor Corporation Bottom Side 3 www.national.com Top Side ...

Page 4

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTENT APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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