LMH6601Q NSC [National Semiconductor], LMH6601Q Datasheet

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LMH6601Q

Manufacturer Part Number
LMH6601Q
Description
250 MHz, 2.4V CMOS Operational Amplifier with Shutdown
Manufacturer
NSC [National Semiconductor]
Datasheet

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© 2009 National Semiconductor Corporation
LMH6601/LMH6601Q
250 MHz, 2.4V CMOS Operational Amplifier with Shutdown
General Description
The LMH6601 is a low voltage (2.4V – 5.5V), high speed volt-
age feedback operational amplifier suitable for use in a variety
of consumer and industrial applications. With a bandwidth of
125 MHz at a gain of +2 and guaranteed high output current
of 100 mA, the LMH6601 is an ideal choice for video line driver
applications including HDTV. Low input bias current (50 pA
maximum), rail-to-rail output, and low current noise allow the
LMH6601 to be used in various industrial applications such
as transimpedance amplifiers, active filters, or high-
impedance buffers. The LMH6601 is an attractive solution for
systems which require high performance at low supply volt-
ages. The LMH6601 is available in a 6-pin SC70 package,
and includes a micropower shutdown feature.
Response at a Gain of +2 for Various Supply Voltages
201364
Features
V
specified.
Applications
S
125 MHz −3 dB small signal bandwidth
75 MHz −3 dB large signal bandwidth
30 MHz large signal 0.1 dB gain flatness
260 V/μs slew rate
0.25%/0.25° differential gain/differential phase
Rail-to-rail output
2.4V – 5.5V single supply operating range
6-Pin SC70 Package
LMH6601Q is AEC-Q100 grade 3 qualified and is
manufactured on an automotive grade flow
Video amplifier
Charge amplifier
Set-top box
Sample & hold
Transimpedance amplifier
Line driver
High impedance buffer
Automotive
= 3.3V, T
A
= 25°C, A
20136441
V
= 2 V/V, R
L
= 150Ω to V
January 9, 2009
www.national.com
, unless

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LMH6601Q Summary of contents

Page 1

... Rail-to-rail output ■ 2.4V – 5.5V single supply operating range ■ 6-Pin SC70 Package ■ LMH6601Q is AEC-Q100 grade 3 qualified and is manufactured on an automotive grade flow Applications ■ Video amplifier ■ Charge amplifier ■ Set-top box ■ ...

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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 Model Machine Model V Differential IN Input Current Output Current Supply Voltage (V ...

Page 3

Symbol Parameter I Input Current Noise N Static, DC Performance V Input Offset Voltage IO DV Input Offset Voltage Average Drift (Note Input Bias Current B I Input Offset Current OS R Input Resistance IN C Input ...

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Electrical Characteristics = 150Ω /2, R unless otherwise specified. Boldface limits apply at temperature extremes. (Note 2) − OUT S L Symbol Parameter Frequency Domain Response SSBW –3 dB Bandwidth Small Signal SSBW_1 Peak ...

Page 5

Symbol Parameter +PSRR Positive Power Supply Rejection Ratio −PSRR Negative Power Supply Rejection Ratio CMRR Common Mode Rejection Ratio CMVR Input Voltage Range I Supply Current CC VOH1 Output High Voltage (Relative VOH2 VOH3 VOL1 Output ...

Page 6

Electrical Characteristics = 150Ω /2, R unless otherwise specified. Boldface limits apply at temperature extremes. (Note 2) − Symbol Parameter Frequency Domain Response SSBW –3 dB Bandwidth Small Signal SSBW_1 Peak Peaking Peak_1 Peaking ...

Page 7

Symbol Parameter I Supply Current CC VOH1 Output High Voltage (Relative VOH2 VOH3 VOL1 Output Low Voltage (Relative to V – ) VOL2 VOL3 I Output Current Load Output Load Rating R ...

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... LMH6601MGX 6-Pin SC70 LMH6601QMG LMH6601QMGX **Automotive Grade (Q) product 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. Automotive grade products are identified with the letter Q. For more information http://www.national.com/automotive. ...

Page 9

Typical Performance Characteristics = 604Ω 3.3V /2, SD tied OUT S Frequency Response for Various Output Amplitudes Frequency Response for Various Output Amplitudes Non-inverting Frequency Response for ...

Page 10

Frequency Response for Various Loads − vs. Ambient Temperature Frequency Response for Various Supply Voltage www.national.com Frequency Response for Various Supply Voltages 20136419 Frequency Response for Various Cap Load 20136422 Max Output Swing vs. Frequency 20136441 10 20136421 ...

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Peak Output Swing vs. R Output Swing vs. Source Current for Various Supply Voltages HD3 vs. Frequency Output Swing vs. Sink Current for Various Supply Voltages L 20136427 20136465 20136405 11 20136464 HD2 vs. Frequency 20136404 THD vs. Output Swing ...

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THD vs. Output Swing Settling Time (±1%) vs. Output Swing Isolation Resistor & Settling Time vs. C www.national.com Slew Rate vs. Ambient Temperature 20136403 Output Settling 20136411 Isolation Resistor & Settling Time vs 20136428 12 20136423 20136412 L ...

Page 13

Closed Loop Output Impedance vs. Frequency for Various Supply Voltages Noise Voltage vs. Frequency CMRR vs. Frequency Off Isolation vs. Frequency 20136410 Open Loop Gain/ Phase 20136424 +PSRR vs. Frequency 20136425 13 20136408 20136435 20136439 www.national.com ...

Page 14

Frequency Supply Current vs. V Offset Voltage vs. Ambient Temperature for 3 Representative Units www.national.com Supply Current vs. Ambient Temperature 20136440 Supply Current vs. Supply Voltage CM 20136437 20136434 14 20136433 20136467 Offset Voltage Distribution 20136436 ...

Page 15

Offset Voltage vs. V (Typical Part) CM 20136438 Small Signal Step Response 20136431 Large Signal Step Response 20136432 Input Bias Current vs. Common Mode Voltage Large Signal Step Response Turn On/Off Waveform 15 20136442 20136430 20136466 www.national.com ...

Page 16

DG vs. V for Various V OUT DG vs. V (DC and AC Coupled Load Compared) OUT www.national.com DP vs 20136471 DP vs. V (DC and AC Coupled Load Compared) OUT 20136473 16 for Various V OUT S ...

Page 17

Application Information OPTIMIZING PERFORMANCE With many op amps, additional device non-linearity and sometimes less loop stability arises when the output has to switch from current-source mode to current-sink mode or vice versa. When it comes to achieving the lowest distortion ...

Page 18

OVERLOAD RECOVERY AND SWING CLOSE TO RAILS The LMH6601 can recover from an output overload in less than 20 ns. See Figure 3 below for the input and output scope photos: FIGURE 3. LMH6601 Output Overload Recovery Waveform In Figure ...

Page 19

With the LMH6601 input common mode range including the V − (ground) rail, there will be no need for AC coupling or level shifting and the input can directly drive the non-inverting input which has the additional advantage of high ...

Page 20

TABLE 1. Finding Figure 7 External Resistor Values by Iteration Estimate Calculated (Ω) (from Equation (Ω) 1k 1.69k 820 1.56k 620 1.37k 390 239 560 1.30k The final set of values for R and R G ...

Page 21

FIGURE 9. AC Coupled Video Amplifier/Driver with SAG Compensation In this circuit, the output coupling capacitor value and size is reduced at the expense of a slightly more complicated cir- cuitry. Note that C1 is not only part of the ...

Page 22

FIGURE 11. Headroom Considerations with AC Coupled Amplifiers If a stage has unclipped swing capability available given node, as shown in Figure 11, the maximum allowable amplitude for an arbitrary waveform is ½ of ...

Page 23

For any video line rate (HxV corresponding to the number of Active horizontal and vertical lines), the speed requirements can be estimated if the Horizontal Active (KH%) and Vertical Active (KV%) numbers are known. These percentages cor- respond to the ...

Page 24

The diode capacitance (C ) along with the input capacitance D of the LMH6601 (C ) has a bearing on the stability of this cir- A cuit and how it is compensated. With large transimpedance gain values (R ), the ...

Page 25

TRANSIMPEDANCE AMPLIFIER NOISE CONSIDERATIONS When analyzing the noise at the output of the I-V converter important to note that the various noise sources (i.e. op amp noise voltage, feedback resistor thermal noise, input noise current, photodiode noise current) ...

Page 26

FIGURE 17. LMH6601 In-Loop Compensation Response www.national.com EVALUATION BOARD National Semiconductor provides the following evaluation board as a guide for high frequency layout and as an aid in device testing and characterization. Many of the datasheet plots were measured with ...

Page 27

Physical Dimensions inches (millimeters) unless otherwise noted 6-Pin SC70 NS Package Number MA006A 27 www.national.com ...

Page 28

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