LMH6643MAX NSC [National Semiconductor], LMH6643MAX Datasheet

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LMH6643MAX

Manufacturer Part Number
LMH6643MAX
Description
3V, Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers
Manufacturer
NSC [National Semiconductor]
Datasheet

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© 2003 National Semiconductor Corporation
LMH6642/6643/6644
3V, Low Power, 130MHz, 75mA Rail-to-Rail Output
Amplifiers
General Description
The LMH664X family true single supply voltage feedback
amplifiers offer high speed (130MHz), low distortion
(−62dBc), and exceptionally high output current (approxi-
mately 75mA) at low cost and with reduced power consump-
tion when compared against existing devices with similar
performance.
Input common mode voltage range extends to 0.5V below V
and 1V from V
40mV of either supply rail, allowing wide dynamic range
especially desirable in low voltage applications. The output
stage is capable of approximately 75mA in order to drive
heavy loads. Fast output Slew Rate (130V/µs) ensures large
peak-to-peak output swings can be maintained even at
higher speeds, resulting in exceptional full power bandwidth
of 40MHz with a 3V supply. These characteristics, along with
low cost, are ideal features for a multitude of industrial and
commercial applications.
Careful attention has been paid to ensure device stability
under all operating voltages and modes. The result is a very
well behaved frequency response characteristic (0.1dB gain
flatness up the 12MHz under 150Ω load and A
minimal peaking (typically 2dB maximum) for any gain set-
ting and under both heavy and light loads. This along with
fast settling time (68ns) and low distortion allows the device
to operate well in ADC buffer, and high frequency filter
applications as well as other applications.
This device family offers professional quality video perfor-
mance with low DG (0.01%) and DP (0.01˚) characteristics.
Differential Gain and Differential Phase characteristics are
also well maintained under heavy loads (150Ω) and through-
out the output voltage range. The LMH664X family is offered
Closed Loop Gain vs. Frequency for Various Gain
+
. Output voltage range extends to within
DS200185
20018535
V
= +2) with
in single (LMH6642), dual (LMH6643), and quad (LMH6644)
options. See ordering information for packages offered.
Features
(V
unless specified).
n −3dB BW (A
n Supply voltage range
n Slew rate (Note 8), (A
n Supply current (no load)
n Output short circuit current
n Linear output current
n Input common mode volt.
n Output voltage swing
n Input voltage noise (100kHz)
n Input current noise (100kHz)
n THD (5MHz, R
n Settling time
n Fully characterized for 3V, 5V, and
n Overdrive recovery
n Output short circuit protected (Note 11)
n No output phase reversal with CMVR exceeded
Applications
n Active filters
n CD/DVD ROM
n ADC buffer amp
n Portable video
n Current sense buffer
S
=
±
5V, T
Large Signal Frequency Response
A
V
= 25˚C, R
= +1)
L
= 2kΩ, V
V
L
= −1)
= 2kΩ, A
O
= 2V
0.5V beyond V
PP
V
, A
±
= +1. Typical values
5V
V
+115mA/−145mA
= +2)
40mV from rails
20018547
www.national.com
, 1V from V
2.7mA/amp
3V to 12.8V
0.9pA/
17nV/
May 2003
130MHz
130V/µs
−62dBc
±
100ns
75mA
68ns
+

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LMH6643MAX Summary of contents

Page 1

LMH6642/6643/6644 3V, Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers General Description The LMH664X family true single supply voltage feedback amplifiers offer high speed (130MHz), low distortion (−62dBc), and exceptionally high output current (approxi- mately 75mA) at low cost and with ...

Page 2

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance V Differential IN Output Short Circuit Duration + − Supply Voltage ( Voltage at ...

Page 3

Electrical Characteristics Unless otherwise specified, all limits guaranteed for at T Boldface limits apply at the temperature extremes. Symbol Parameter CMVR Input Common-Mode Voltage Range CMRR Common Mode Rejection Ratio A Large Signal Voltage Gain VOL V Output Swing ...

Page 4

Electrical Characteristics Unless otherwise specified, all limits guaranteed for at T Boldface limits apply at the temperature extremes. Symbol Parameter SR Slew Rate (Note 8) V Input Offset Voltage Input Offset Average Drift OS I Input ...

Page 5

Electrical Characteristics Unless otherwise specified, all limits guaranteed for at T Boldface limits apply at the temperature extremes. Symbol Parameter i Input-Referred Current Noise n THD Total Harmonic Distortion DG Differential Gain DP Differential Phase CT Rej. Cross-Talk ...

Page 6

Electrical Characteristics Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed ...

Page 7

Typical Performance Characteristics otherwise specified. Closed Loop Frequency Response for Various Supplies Closed Loop Gain vs. Frequency for Various Gain Closed Loop Gain vs. Frequency for Various Supplies + 25˚ + Closed Loop ...

Page 8

Typical Performance Characteristics otherwise specified. (Continued) Large Signal Frequency Response Closed Loop Frequency Response for Various Supplies for THD OUT PP www.national.com 25˚ Closed Loop Small Signal Frequency Response for 20018547 ± ...

Page 9

Typical Performance Characteristics otherwise specified. (Continued) < for THD OUT PP Open Loop Gain/Phase for Various Temperature HD3 (dBc) vs. Output Swing + 25˚ 0.5% Open Loop Gain/Phase for Various Temperature 20018510 ...

Page 10

Typical Performance Characteristics otherwise specified. (Continued) HD3 vs. Output Swing Settling Time vs. Input Step Amplitude (Output Slew and Settle Time from V vs. I OUT www.national.com 25˚ 20018505 20018513 SOURCE 20018518 10 ...

Page 11

Typical Performance Characteristics otherwise specified. (Continued from V vs. I OUT SOURCE Swing vs Output Sinking Saturation Voltage vs − 25˚ + OUT 20018516 Short Circuit ...

Page 12

Typical Performance Characteristics otherwise specified. (Continued) Closed Loop Output Impedance vs. Frequency A CMRR vs. Frequency V vs. V (Typical Unit) OS OUT www.national.com + − 25˚ + PSRR vs. Frequency ...

Page 13

Typical Performance Characteristics otherwise specified. (Continued) V vs. V (for 3 Representative Units vs. V (for 3 Representative Units vs − 25˚ + ...

Page 14

Typical Performance Characteristics otherwise specified. (Continued Large Signal Step Response Small Signal Step Response www.national.com + 25˚ + Small Signal Step Response 20018521 Large Signal Step Response 20018541 ...

Page 15

Typical Performance Characteristics otherwise specified. (Continued) Small Signal Step Response Large Signal Step Response Large Signal Step Response + 25˚ + Small Signal Step Response 20018552 Large Signal Step Response 20018537 20018560 15 ...

Page 16

Application Notes CIRCUIT DESCRIPTION: The LMH664X family is based on National Semiconductor’s proprietary VIP10 dielectrically isolated bipolar process. This device family architecture features the following: • Complimentary bipolar devices with exceptionally high f (∼8GHz) even under low supply voltage (2.7V) ...

Page 17

Application Notes (Continued) SINGLE SUPPLY, LOW POWER PHOTODIODE AMPLIFIER: The circuit shown in Figure 3 is used to amplify the current from a photo-diode into a voltage output. In this circuit, the emphasis is on achieving high bandwidth and the ...

Page 18

... Generally, a good high frequency layout will keep power supply and ground traces away from the inverting input and Ordering Information Package Part Number 5-Pin SOT-23 LMH6642MF LMH6642MFX SOIC-8 LMH6642MA LMH6642MAX LMH6643MA LMH6643MAX MSOP-8 LMH6643MM LMH6643MMX SOIC-14 LMH6644MA LNH6644MAX TSSOP-14 LMH6644MT LMH6644MTX www.national.com output pins. Parasitic capacitances on these nodes to ...

Page 19

Physical Dimensions inches (millimeters) unless otherwise noted 5-Pin SOT23 NS Package Number MF05A 8-Pin SOIC NS Package Number M08A 19 www.national.com ...

Page 20

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) 8-Pin MSOP NS Package Number MUA08A 20 ...

Page 21

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Pin SOIC NS Package Number M14A 21 www.national.com ...

Page 22

Physical Dimensions LIFE SUPPORT POLICY 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. ...

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