LMP8601MAEVAL/NOPB National Semiconductor, LMP8601MAEVAL/NOPB Datasheet

LMP8601MAEVAL/NOPB

Manufacturer Part Number

LMP8601MAEVAL/NOPB

Description

BOARD EVALUATION FOR LMP8601MA

Manufacturer

National Semiconductor

Series

LMP®r

Datasheets

1.LMP8601MAEVALNOPB.pdf (22 pages)

2.LMP8601MAEVALNOPB.pdf (6 pages)

Specifications of LMP8601MAEVAL/NOPB

Channels Per Ic

1 - Single

Amplifier Type

Current Sense

Output Type

Single-Ended

Slew Rate

0.83 V/µs

Current - Output / Channel

48mA

Operating Temperature

-40°C ~ 125°C

Current - Supply (main Ic)

1.1mA

Voltage - Supply, Single/dual (±)

3 V ~ 5.5 V

Board Type

Fully Populated

Utilized Ic / Part

LMP8601

Silicon Manufacturer

National

Silicon Core Number

LMP8601, LMP8601Q

Kit Application Type

Amplifier

Application Sub Type

Current-Sense Amplifier

Kit Contents

Board, Doc

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

-3db Bandwidth

Other names

LMP8601MAEVAL

Current page: 1 of 6
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LMP8601 Evaluation Board

User's Manual

Introduction

The LMP8601 Current Sense evaluation Board is designed

to evaluate the LMP8601, 60V Common Mode, Bidirectional

Precision Current Sensing Amplifier. This board has a

General Description

The LMP8601 and LMP8601Q are fixed 20x gain precision

amplifiers. The part amplifies and filters small differential sig-

nals in the presence of high common mode voltages. The

input common mode voltage range is −22V to +60V when

operating from a single 5V supply. With 3.3V supply, the input

common mode voltage range is from −4V to +27V. The

LMP8601 and LMP8601Q are members of the Linear Mono-

litic Precision (LMP

tional and bidirectional current sensing applications. All

parameter values of the part that are shown in the tables of

the LMP8601 data sheet are 100% tested and all bold values

are also 100% tested over temperature.

The part has a precise gain of 20x which is adequate in most

targeted applications to drive an ADC to its full scale value.

The fixed gain is achieved in two separate stages, a pream-

plifier with a gain of 10x and an output stage buffer amplifier

with a gain of 2x. The connection between the two stages of

the signal path is brought out on two pins to enable the pos-

sibility to create an additional filter network around the output

) family and are ideal parts for unidirec-

FIGURE 1. The LMP8601 Evaluation Board

300897

National Semiconductor

Application Note 1940

BeB Hennink

February 6, 2009

LMP8601 part mounted on the PCB together with the required

de-coupling capacitor, power supply connections, Input and

Output connectors and a 3 pin header for connecting the off-

set pin to either GND or V

buffer amplifier. These pins can also be used for alternative

configurations with different gain as described in the applica-

tions section of the data sheet .

The mid-rail offset adjustment pin enables the user to use

these devices for bidirectional single supply voltage current

sensing. The output signal is bidirectional and mid-rail refer-

enced when this pin is connected to the positive supply rail.

With the offset pin connected to ground, the output signal is

unidirectional and ground-referenced .

The LMP8601Q incorporates enhanced manufacturing and

support processes for the automotive market, including defect

detection methodologies. Reliability qualification is compliant

with the requirements and temperature grades defined in the

AEC Q100 standard

LMP8601 Operating Conditions

•

Temperature Range

Power Supply Voltage

CMVR at V

= 3.3V

= 5.0V

30089701

3.0V

−40°C to 125°C

www.national.com

−22V to 60V

≤

−4V to 27V

≤

5.5V

Related parts for LMP8601MAEVAL/NOPB

LMP8601MAEVAL/NOPB Summary of contents

Page 1

... The connection between the two stages of the signal path is brought out on two pins to enable the pos- sibility to create an additional filter network around the output © 2009 National Semiconductor Corporation National Semiconductor Application Note 1940 BeB Hennink ...

Page 2

Description of the LMP8601 Evaluation Board The LMP8601 evaluation board requires a power supply with a voltage between 3.0V and 5.5V , the supply current will be < normal operation with high impedance load on the output of ...

Page 3

Description of Headers and Connectors of the LMP8601 Evaluation Board The LMP8601 Evaluation Board provides the following head- ers and connectors for connecting test equipment and sup- plying the LMP8601 part. Connector and Header Functions Designator J1 J2 the second ...

Page 4

Layout www.national.com FIGURE 3. Layout, Silk Screen FIGURE 4. Layout, Top Layer 4 30089707 30089706 ...

Page 5

Bill of Materials Designator Component C1 Capacitor C2 Capacitor J1 Header 2 pin J2 Header 2 pin P1 Banana plug P2 Banana plug P3 Banana plug Banana plug P5 P7 Banana plug U1 LMP8601 Value Tolerance 100 nF N/A YELLOW ...

Page 6

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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