lmh6504mmx National Semiconductor Corporation, lmh6504mmx Datasheet

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lmh6504mmx

Manufacturer Part Number
lmh6504mmx
Description
Wideband, Low Power, Variable Gain Amplifier
Manufacturer
National Semiconductor Corporation
Datasheet
© 2004 National Semiconductor Corporation
LMH6504
Wideband, Low Power, Variable Gain Amplifier
General Description
The LMH
trolled gain stage followed by a high-speed current feedback
Op Amp which can directly drive a low impedance load. Gain
adjustment range is 80 dB for up to 10 MHz by varying the
gain control input voltage, V
Maximum gain is set by external components, and the gain
can be reduced all the way to cut-off. Power consumption is
110 mW with a speed of 150 MHz and a gain control band-
width (BW) of 150 MHz. Output referred DC offset voltage is
less than 55 mV over the entire gain control voltage range.
Device-to-device gain matching is within
mum gain. Furthermore, gain is tested and guaranteed over
a wide range. The output current feedback Op Amp allows
high frequency large signals (Slew Rate
can also drive a heavy load current (60 mA). Near ideal input
characteristics (i.e. low input bias current, low offset, low pin
3 resistance) enable the device to be easily configured as an
inverting amplifier as well (see Application Information sec-
tion for details).
To provide ease of use when working with a single supply,
V
pin potential (pin 4). V
ease drive requirement. In single supply operation, the
ground pin is tied to a "virtual" half supply.
LMH6504 gain control is linear in dB for a large portion of the
total gain control range. This makes the device suitable for
AGC applications. For linear gain control applications, see
LMH6503 data sheet.
The combination of minimal external components and small
outline packages (SO8 and MSOP8) allows the LMH6504 to
be used in space-constrained applications.
LMH
G
range is set to be from 0V to +2V relative to the ground
is a trademark of National Semiconductor Corporation.
6504 is a wideband DC coupled voltage con-
G
Gain vs. V
input impedance is high in order to
G
.
G
DS200843
±
>
0.42 dB at maxi-
1500 V/µs) and
20084311
Features
V
= A
n −3 dB BW
n Gain control BW
n Adjustment range (
n Output offset voltage
n Gain matching (limit)
n Supply voltage range
n Slew rate (inverting)
n Supply Current (no load)
n Linear Output Current
n Output Voltage Swing
n Input Noise Voltage
n Input Noise Current
n THD (20 MHz, R
n Replacement for CLC5523
Applications
n Variable attenuator
n AGC
n Voltage controlled filter
n Video imaging processing
Typical Application
S
=
VMAX
±
5V, T
= 9.7V/V, Typical values unless specified.
A
= 25˚C, R
L
= 100Ω, V
A
<
VMAX
F
10 MHz)
= 1 KΩ, R
= 9.7 V/V
O
= 2 V
G
= 100Ω, R
PP
)
www.national.com
L
4.4 nV/
2.6 pA/
20084302
= 100Ω, A
June 2004
1500 V/µs
7V to 12V
±
150 MHz
150 MHz
±
±
0.42 dB
−45dBc
55 mV
60 mA
11 mA
±
80 dB
2.2V
V

lmh6504mmx Summary of contents

Page 1

... LMH6503 data sheet. The combination of minimal external components and small outline packages (SO8 and MSOP8) allows the LMH6504 to be used in space-constrained applications. Gain vs LMH ™ trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation Features ± 5V 25˚C, R ...

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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 4): Human Body Machine Model Input Current Output Current + − Supply Voltages ( ...

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Electrical Characteristics Unless otherwise specified, all limits guaranteed for T ± 0.1V 100Ω +2V. Boldface limits apply at the temperature extremes Symbol Parameter DC & Miscellaneous Performance GACCU Gain Accuracy (See Application Note) G ...

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... Connection Diagram Ordering Information Package Part Number 8-Pin SOIC LMH6504MA LMH6504MAX LMH6504MM 8-Pin MSOP LMH6504MMX www.national.com (Note 2) (Continued) − /∆ with 0.1V input voltage. ∆V OUT V < gain. For example, for f 30 MHz, here are the Flat Band Attenuation ranges: ...

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Typical Performance Characteristics kΩ 100Ω GMAX F G Frequency Response Over Temperature Frequency Response (A Frequency Response for Various V (Large Signal) Unless otherwise specified 0.1V, input ...

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Typical Performance Characteristics kΩ 100Ω GMAX F G Gain Control Frequency Response I vs PSRR www.national.com Unless otherwise specified 0.1V, input terminated in 50Ω. ...

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Typical Performance Characteristics kΩ 100Ω GMAX Feed through Isolation for Various Gain vs. V Including Limits G Unless otherwise specified: ...

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Typical Performance Characteristics kΩ 100Ω GMAX F G Output Offset Voltage vs Distribution of Output Offset Voltage Output Noise Density vs. Frequency www.national.com Unless otherwise specified: V ...

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Typical Performance Characteristics kΩ 100Ω GMAX Input Referred Noise Density vs. Frequency Output Voltage vs. Output Current (Sourcing) HD vs. P OUT Unless otherwise specified: V ...

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Typical Performance Characteristics kΩ 100Ω GMAX F G THD vs. P OUT THD vs. Gain V Bias Current vs www.national.com Unless otherwise specified 0.1V, input ...

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Typical Performance Characteristics kΩ 100Ω GMAX Step Response Plot Gain vs. V Step G Unless otherwise specified 0.1V, input terminated in 50Ω ...

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Application Information GENERAL DESCRIPTION The key features of the LMH6504 are: • Low power • Broad voltage controlled gain and attenuation range (From A down to complete cutoff) VMAX • Bandwidth independent, resistor programmable gain range ( • ...

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Application Information Eq. 3 Where K = 0.965 (nominal 0.96V & V temperature For a V range, the value specified in the tables represents G the worst case accuracy over the entire range. The "Typical" value would be ...

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Application Information LMH6504 GAIN CONTROL FUNCTION In the plot, Gain vs can see the gain as a function of G the control voltage. The “Gain (V/V)” plot, sometimes re- ferred to as the S-curve, is the linear ...

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Application Information trim pot R to null the offset voltage at the output. This will 4 eliminate the output stage offsets. Next set V adjust the trim pot R to null the offset voltage at the output. 1 This will ...

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Application Information Signal frequencies must not reach the gain control port of the LMH6504, or the output signal will be distorted (modulated by itself). A fast settling AGC needs additional filtering be- yond the integrator stage to block signal frequencies. ...

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Application Information CIRCUIT LAYOUT CONSIDERATIONS & EVALUATION BOARD A good high frequency PCB layout including ground plane construction and power supply bypassing close to the pack- age are critical to achieving full performance. The amplifier is sensitive to stray capacitance ...

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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Pin SOIC NS Package Number M08A 8-Pin MSOP NS Package Number MUA08A 18 ...

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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN 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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