LMP8100AEVAL National Semiconductor, LMP8100AEVAL Datasheet

no-image

LMP8100AEVAL

Manufacturer Part Number
LMP8100AEVAL
Description
BOARD EVALUATION FOR LMP8100
Manufacturer
National Semiconductor
Series
LMP®r
Datasheets
1.LMP8100AEVAL.pdf (30 pages)
2.LMP8100AEVAL.pdf (6 pages)

Specifications of LMP8100AEVAL

Channels Per Ic
1 - Single
Amplifier Type
Programmable Gain
Output Type
Single-Ended, Rail-to-Rail
Slew Rate
12 V/µs
Current - Output / Channel
20mA
Operating Temperature
-40°C ~ 125°C
Current - Supply (main Ic)
5.3mA
Voltage - Supply, Single/dual (±)
2.7 V ~ 5.5 V, ±1.35 V ~ 2.75 V
Board Type
Fully Populated
Utilized Ic / Part
LMP8100
Lead Free Status / RoHS Status
Not applicable / Not applicable
-3db Bandwidth
-
© 2008 National Semiconductor Corporation
LMP8100
Programmable Gain Amplifier
General Description
The LMP8100 programmable gain amplifier features an ad-
justable gain from 1 to 16 V/V in 1 V/V increments. At the core
of the LMP8100 is a precision, 33 MHz, CMOS input, rail-to-
rail input/output operational amplifier with a typical open-loop
gain of 110 dB. Amplifier closed-loop gain is set by an array
of precision thin-film resistors. Amplifier control modes are
programmed via a serial port that allows devices to be cas-
caded so that an array of LMP8100 amplifiers can be pro-
grammed by a single serial data stream. The control mode
registers are double buffered to insure glitch-free transitions
between programmed settings. The LMP8100 is part of the
LMP
applications.
The amplifier features several programmable controls includ-
ing: gain; a power-conserving shutdown mode which can
reduce current consumption to only 20 μA; an input zeroing
switch which allows the output offset voltage to be measured
to facilitate system calibration; and four levels of internal fre-
quency compensation which can be set to maximize band-
width at the different gain settings.
The LMP8100 comes in a 14-Pin SOIC package.
Simplified Block Diagram
LMP
®
is a registered trademark of National Semiconductor Corporation.
®
precision amplifier family and is ideal for a variety of
201476
Features
Typical Values, T
■
■
■
■
■
■
■
■
■
■
■
■
■
Applications
■
■
■
■
■
■
Gain error (over temperature range)
— LMP8100A
— LMP8100
Gain range
Programmable frequency compensation
Input zero calibration switch
Input offset voltage (max, LMP8100A)
Input bias current
Input noise voltage
Unity gain bandwidth
Slew rate
Output current
Supply voltage range
Supply current
Rail-to-Rail output swing
Industrial instrumentation
Data acquisition systems
Test equipment
Scaling amplifier
Gain control
Sensor interface
A
= 25°C
20147607
1 to 16 V/V in 1 V/V steps
V
+
−50 mV to V
April 18, 2008
www.national.com
2.7V to 5.5V
12 nV/
−
33 MHz
+50 mV
0.075%
12 V/μs
250 μV
5.3 mA
0.1 pA
20 mA
0.03%
√
Hz

Related parts for LMP8100AEVAL

Image
Part Number
Description
Manufacturer
Datasheet
Request R
LMP8100A
Part Number:
LMP8100A
Description:
Programmable Gain Amplifier
Manufacturer:
NSC [National Semiconductor]
Datasheet:
LMP8100A.pdf (30 pages)
lmp8100
Part Number:
lmp8100
Description:
Programmable Gain Amplifier
Manufacturer:
National Semiconductor Corporation
Datasheet:
LMP8100.pdf (30 pages)
MC1408P8
Part Number:
MC1408P8
Description:
National Semiconductor [8-Bit D/A Converter]
Manufacturer:
National Semiconductor
Datasheet:
MC1408P8.pdf (12 pages)
CS1301
Part Number:
CS1301
Description:
National Semiconductor [Media Coprocessor]
Manufacturer:
National Semiconductor
Datasheet:
CS1301.pdf (25 pages)
LM4832N
Part Number:
LM4832N
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
LM4832N.pdf (23 pages)
LM4832M
Part Number:
LM4832M
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
LM4832M.pdf (23 pages)
LM4546
Part Number:
LM4546
Description:
AC97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound
Manufacturer:
National Semiconductor
LP2981AIM5X-2.7
Part Number:
LP2981AIM5X-2.7
Description:
Manufacturer:
National Semiconductor
Datasheet:
LP2981AIM5X-2.7.pdf (16 pages)
LP2988AIMMX-3.8
Part Number:
LP2988AIMMX-3.8
Description:
Manufacturer:
National Semiconductor
LP3988IMFX-2.6
Part Number:
LP3988IMFX-2.6
Description:
Manufacturer:
National Semiconductor
Datasheet:
LP3988IMFX-2.6.pdf (11 pages)
LPV321M7X
Part Number:
LPV321M7X
Description:
General Purpose, Low Voltage, Low Power, Rail-to-Rail Output Operational Amplifiers
Manufacturer:
National Semiconductor
Datasheet:
LPV321M7X.pdf (21 pages)
ADC0882CCN
Part Number:
ADC0882CCN
Description:
8-bit 20 MSPS flash A/D converter.
Manufacturer:
National Semiconductor
Datasheet:
ADC0882CCN.pdf (11 pages)
LM837N
Part Number:
LM837N
Description:
Low Noise Quad Operational Amplifier
Manufacturer:
National Semiconductor
Datasheet:
LM837N.pdf (8 pages)
DS3650J
Part Number:
DS3650J
Description:
Quad Differential Line Receivers
Manufacturer:
National Semiconductor
Datasheet:
DS3650J.pdf (8 pages)
DS3662J
Part Number:
DS3662J
Description:
Quad High Speed Trapezoidal? Bus Transceiver
Manufacturer:
National Semiconductor
Datasheet:
DS3662J.pdf (6 pages)

LMP8100AEVAL Summary of contents

Page 1

... The LMP8100 comes in a 14-Pin SOIC package. Simplified Block Diagram LMP ® registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation Features Typical Values, T ■ Gain error (over temperature range) — ...

Page 2

Block Diagram www.national.com 2 20147602 ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Human Body Model Machine Model V Differential IN Output Short Circuit Duration (Note 3) Supply Voltage ( – V − Voltage at Input and Output Pins ...

Page 4

Symbol Parameter I Supply Current, Power Down PD Feedback Resistance R Input Impedance IN 3.3V Electrical Characteristics Unless otherwise specified, all limits are guaranteed for kΩ /2; Gain = 1 V/V. Boldface limits ...

Page 5

Electrical Characteristics (Serial Interface) Unless otherwise specified, all limits guaranteed for T Symbol Parameter V Logic Low Threshold IL V Logic High Threshold IH I Output Source Current, SDO SDO Output Sink Current, SDO I Output Tri-state Leakage Current, OZ ...

Page 6

Connection Diagram Ordering Information Package Part Number LMP8100AMA LMP8100AMAX 14-Pin SOIC LMP8100MA LMP8100MAX www.national.com 14-Pin SOIC 20147601 Top View Package Marking Transport Media 55 Units/Rail LMP8100AMA 2.5k units Tape and Reel 55 Units/Rail LMP8100MA 2.5k units Tape and Reel 6 ...

Page 7

Timing Diagram Test Circuit Timing Diagram 20147653 7 20147603 www.national.com ...

Page 8

Test Circuit Diagram www.national.com Test Circuit 8 20147609 ...

Page 9

Typical Performance Characteristics Offset Voltage Distribution TCV Distribution Offset Voltage Distribution 20147685 TCV 20147683 20147666 9 20147686 Distribution OS 20147684 V vs 20147667 www.national.com ...

Page 10

www.national.com S 20147665 20147662 S 20147660 20147664 I vs 20147663 I vs 20147661 ...

Page 11

DC Gain Error Gain Error Small Signal Gain Error vs. +IN DC Level DC Gain Error 20147689 DC Gain Error 20147690 Small Signal Gain Error vs. +IN ...

Page 12

PSRR vs. Frequency I vs. V (Source) OUT OUT I vs. V (Source) OUT OUT www.national.com PSRR vs. Frequency 20147610 I OUT 20147669 I OUT 20147671 12 20147611 vs. V (Sink) OUT 20147668 vs. V (Sink) OUT 20147670 ...

Page 13

Small Signal Step Response 20147635 Small Signal Step Response 20147637 Small Signal Step Response 20147639 Small Signal Step Response Small Signal Step Response Small Signal Step Response 13 20147636 20147638 20147640 www.national.com ...

Page 14

Small Signal Step Response Large Signal Step Response Large Signal Step Response www.national.com Small Signal Step Response 20147641 Large Signal Step Response 20147643 Large Signal Step Response 20147645 14 20147642 20147644 20147646 ...

Page 15

Large Signal Step Response 20147647 Large Signal Step Response 20147649 THD+N vs. Frequency 20147675 Large Signal Step Response Large Signal Step Response THD+N vs. Frequency 15 20147648 20147650 20147674 www.national.com ...

Page 16

THD+N vs. V Bandwidth vs. Capacitive Load Peaking vs. Capacitive Load www.national.com OUT 20147673 20147617 20147621 16 THD+N vs. V OUT 20147672 Bandwidth vs. Capacitive Load 20147618 Peaking vs. Capacitive Load 20147622 ...

Page 17

Peaking vs. Capacitive Load 20147623 Gain vs. Frequency 20147629 Gain vs. Frequency 20147627 Gain vs. Frequency Gain vs. Frequency AC Gain Error vs. Frequency 17 20147630 20147628 20147656 www.national.com ...

Page 18

AC Gain Error vs. Frequency AC Gain Error vs. Frequency Noise vs. Frequency www.national.com AC Gain Error vs. Frequency 20147655 AC Gain Error vs. Frequency 20147658 0 Noise 20147654 18 20147657 20147659 201476a2 ...

Page 19

Closed Loop Output Impedance vs. Frequency SDO V vs. I Input Impedance 20147631 20147634 19 201476a1 SDO V vs. I 20147652 www.national.com ...

Page 20

Applications Information LIFETIME DRIFT Offset voltage (V ) and gain are electrical parameters which OS may drift over time. This drift, known as lifetime drift, is very common in operational amplifiers; however, its effect is more evident in precision amplifiers. ...

Page 21

FIGURE 5. THBT V Drift OS 20147696 FIGURE 6. THBT V Drift OS 20147697 FIGURE 7. THBT Gain Drift FIGURE 8. THBT Gain Drift POWER-ON RESET The LMP8100 has a power-up reset feature ...

Page 22

TABLE 2. Input Zero, Power-Down and Gain Setting Codes Zero ...

Page 23

GRT PINS The GRT pins must have a low impedance connection to ei- ther ground or a reference voltage. Any parasitical impedance on these pins will affect the gain accuracy of the LMP8100. Figure 10 shows a simplified schematic of ...

Page 24

SERIAL CONTROL INTERFACE OPERATION The LMP8100 gain, bandwidth compensation, power down, and input zeroing are controlled by data stored in a program- ming register. Data to be written into the control register is first loaded into the LMP8100 via the ...

Page 25

The serial control pins can be connected in one of two ways when two or more LMP8100s are used in an application. Star Configuration This configuration can be used if each LMP8100 will always have the same value in each ...

Page 26

POWER SUPPLY PURITY AND BYPASSING Particular attention to power supply purity is needed in order to preserve the LMP8100's gain accuracy and low noise. The LMP8100 worst-case PSRR 56.2 µV/V. Never- theless, the usable dynamic range, ...

Page 27

BRIDGE AMPLIFIER In Figure 17 two LMP8100s are used with a LMP7711 to build an amplifier for the signal from a GMR Magnetic Field Sensor. The advantage of using the LMP8100 is that as the signal strength from the Magnetic ...

Page 28

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 14-Pin SOIC NS Package Number M14A 28 ...

Page 29

Notes 29 www.national.com ...

Page 30

... 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 Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...

Related keywords