National Semiconductor LMH6738 Technical data

LMH6738 Very Wideband, Low Distortion Triple Op Amp

July 2004

General Description

The LMH6738 is a very wideband, DC coupled monolithic operational amplifier designed specifically for ultra high resolution video systems as well as wide dynamic range systems requiring exceptional signal fidelity. Benefiting from National’s current feedback architecture, the LMH6738 offers a gain range of without external compensation, even at unity gain. At a gain of +2 the LMH6738 supports ultra high resolution video systems with a 400 MHz 2 V distortion levels through 30 MHz (R Hz input referred noise, the LMH6738 is the ideal driver or buffer for high speed flash A/D and D/A converters. Wide dynamic range systems such as radar and communication receivers requiring a wideband amplifier offering exceptional signal purity will find the LMH6738’s low input referred noise and low harmonic distortion make it an attractive solution.

1to±10 while providing stable, operation

–3 dB Bandwidth. With 12-bit

= 100Ω), 2.3 nV/

Connection Diagram

16-Pin SSOP

Features

n 750 MHz −3 dB small signal bandwidth (AV= +1) n −85 dBc 3rd harmonic distortion (20 MHz) n 2.3 nV/ n 3300 V/µs slew rate n 33 mA supply current (11.3 mA per op amp) n 90 mA linear output current n 0.02/0.01 Diff. Gain / Diff. Phase (R

Hz input noise voltage

= 150Ω)

Applications

n RGB video driver n High resolution projectors n Flash A/D driver n D/A transimpedance buffer n Wide dynamic range IF amp n Radar/communication receivers n DDS post-amps n Wideband inverting summer n Line driver

Top View

VIP10™is a trademark of National Semiconductor Corporation.

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/

LMH6738

Distributors for availability and specifications.

+-V–

Supply Voltage (V

OUT

Common Mode Input Voltage

Maximum Junction Temperature +150˚C

Storage Temperature Range −65˚C to +150˚C

Soldering Information

Infrared or Convection (20 sec.) 235˚C

Wave Soldering (10 sec.) 260˚C

) 13.2V

(Note 3)

ESD Tolerance (Note 4)

Human Body Model 2000V

Machine Model 200V

Storage Temperature Range −65˚C to +150˚C

Operating Ratings (Note 1)

Thermal Resistance

Package (θ

16-Pin SSOP 36˚C/W 120˚C/W

Operating Temperature Range −40˚C +85˚C

Supply Voltage (V

+-V–

) 8V to 12V

)(θJA)

Electrical Characteristics (Note 2)

AV= +2, VCC=±5V, RL= 100Ω,RF= 549Ω; unless otherwise specified.

Symbol Parameter Conditions Min Typ Max Units

Frequency Domain Performance

UGBW -3 dB Bandwidth Unity Gain, V

SSBW -3 dB Bandwidth V

LSBW V

0.1 dB Bandwidth V

OUT

= 200 mV

=2V

GFPL Peaking DC to 75 MHz 0 dB

GFR1 Rolloff DC to 150 MHz, V

GFR2 Rolloff

300 MHz, V

Time Domain Response

TRS Rise and Fall Time

TRL 5V Step 1.7

(10% to 90%)

2V Step 0.9

SR Slew Rate 5V Step 3300 V/µs

Settling Time to 0.1% 2V Step 10 ns

Enable Time From Disable = rising edge. 7.3 ns

Disable Time From Disable = falling edge. 4.5 ns

Distortion

HD2L 2

HD2H 2 V

HD3L 3

HD3H 2 V

Harmonic Distortion 2 VPP, 5 MHz −80

, 20 MHz −71

, 50 MHz −55

Harmonic Distortion 2 VPP, 5 MHz −90

, 20 MHz −85

, 50 MHz −65

Equivalent Input Noise

Non-Inverting Voltage

Inverting Current

Non-Inverting Current

1 MHz 2.3 nV/

1 MHz 12 pA/

1 MHz 3 pA/

Video Performance

DG Differential Gain 4.43 MHz, R

DP Differential Phase 4.43 MHz, R

Static, DC Performance

VIO Input Offset Voltage (Note 6) 0.5

IBN Input Bias Current (Note 6) Non-Inverting −15

IBI Input Bias Current (Note 6) Inverting −2

= 200 mV

OUT

=2V

OUT

= 150Ω .02 %

= 150Ω .01 ˚

=2V

750 MHz

480

400

150 MHz

0.1 dB

1.0 dB

2.5

4.5

−7 0

−20

MHz

dBcHD2 2 V

dBcHD3 2 V

µA

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Electrical Characteristics (Note 2) (Continued)

AV= +2, VCC=±5V, RL= 100Ω,RF= 549Ω; unless otherwise specified.

Symbol Parameter Conditions Min Typ Max Units

PSRR Power Supply Rejection Ratio

(Note 6)

CMRR Common Mode Rejection Ratio

(Note 6)

XTLK Crosstalk Input Referred, f=10MHz, Drive

channels A,C measure channel B

Supply Current (Note 6) All three amps Enabled, No

Load

Supply Current Disabled V

−

RL=

∞

Miscellaneous Performance

+ Non-Inverting Input Resistance 1000 kΩ

+ Non-Inverting Input Capacitance .8 pF

− Inverting Input Impedance Output impedance of input

buffer.

CMIR Common Mode Input Range

Output Impedance DC 0.05 Ω

Output Voltage Range (Note 6) RL= 100Ω

∞

RL=

CMRR

40 dB

(Note 6)

Linear Output Current

VIN= 0V, V

OUT

30 mV 80

(Notes 3, 6)

Short Circuit Current (Note 5) VIN= 2V Output Shorted to

Ground

DMAX

DMIM

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 specifications, see the Electrical Characteristics tables.

Note 2: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of the device such that T See Applications Section for information on temperature de-rating of this device." Min/Max ratings are based on product characterization and simulation. Individual parameters are tested as noted.

Note 3: The maximum output current (I more details.

Note 4: Human body model: 1.5 kΩ in series with 100 pF. Machine model: 0Ω in series with 200 pF.

Note 5: Short circuit current should be limited in duration to no more than 10 seconds. See the Power Dissipation section of the Application Section for more details.

Note 6: Parameter 100% production tested at 25˚ C.

Disable Pin Bias Current High Disable Pin = V

Disable Pin Bias Current Low Disable Pin = 0V −350 µA

Voltage for Disable Disable Pin ≤ V

Voltage for Enable Disable Pin ≥ V

. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self heating where T

J=TA

) is determined by device power dissipation limitations. See the Power Dissipation section of the Application Section for

OUT

DMAX

DMIN

53 dB

48.5

50 dB

−80 dB

32 35

1.9 2.2 mA

1.1 1.3 mA

30 Ω

3.25

3.1

3.65

3.5

1.9

1.7

3.5

3.8

2.0 V

90 mA

160 mA

10 µA

0.8 V

2.0 V

LMH6738

TA.

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

16-pin SSOP

LMH6738MQ

LMH6738MQX 2.5k Units Tape and Reel

LH6738MQ

95 Units/Rail

MQA16

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Typical Performance Characteristics A

wise specified).

LMH6738

Large Signal Frequency Response Large Signal Frequency Response

= +2, VCC=±5V, RL= 100Ω,RF= 549Ω; unless other-

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Small Signal Frequency Response Frequency Response vs. V

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Frequency Response vs. Supply Voltage Pulse Response

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OUT

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