National Semiconductor LM6171 Technical data

February 2003

LM6171 High Speed Low Power Low Distortion Voltage Feedback Amplifier

General Description

The LM6171 is a high speed unity-gain stable voltage feedback amplifier. It offers a high slew rate of 3600V/µs and a unity-gain bandwidth of 100 MHz while consuming only 2.5 mA of supply current. The LM6171 has very impressive AC and DC performance which is a great benefit for high speed signal processing and video applications.

15V power supplies allow for large signal swings and

The give greater dynamic range and signal-to-noise ratio. The LM6171 has high output current drive, low SFDR and THD, ideal for ADC/DAC systems. The LM6171 is specified for

5V operation for portable applications.

™

The LM6171 is built on National’s advanced VIP cally Integrated PNP) complementary bipolar process.

III (Verti-

Typical Performance Characteristics

Closed Loop Frequency Responsevs. Supply Voltage

= +1)

Features

(Typical Unless Otherwise Noted)

n Easy-To-Use Voltage Feedback Topology n Very High Slew Rate: 3600V/µs n Wide Unity-Gain-Bandwidth Product: 100 MHz n −3dB Frequency n Low Supply Current: 2.5 mA n High CMRR: 110 dB n High Open Loop Gain: 90 dB n Specified for

AV= +2: 62 MHz

15V and±5V Operation

Applications

n Multimedia Broadcast Systems n Line Drivers, Switchers n Video Amplifiers n NTSC, PAL n ADC/DAC Buffers n HDTV Amplifiers n Pulse Amplifiers and Peak Detectors n Instrumentation Amplifier n Active Filters

and SECAM Systems

Large Signal Pulse Response

AV= +1, VS=±15

01233609

01233605

VIP™is a trademark of National Semiconductor Corporation.

PAL

is a registered trademark of and used under licence from Advanced Micro Devices, Inc.

Connection Diagram

LM6171

8-Pin DIP/SO

Top View

01233601

Ordering Information

Package Temperature Range Transport Media NSC Drawing

Industrial

−40˚C to +85˚C

8-Pin LM6171AIN Rails N08E

Molded DIP LM6171BIN

8-Pin LM6171AIM, LM6171BIM Rails M08A

Small Outline LM6171AIMX, LM6171BIMX 2.5k Units Tape and Reel

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LM6171

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

ESD Tolerance (Note 2) 2.5 kV

Supply Voltage (V

Differential Input Voltage

Common-Mode Voltage Range V

Input Current

Output Short Circuit to Ground (Note 3) Continuous

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

Maximum Junction Temperature (Note 4) 150˚C

15V DC Electrical Characteristics

+–V−

) 36V

+0.3V to V−−0.3V

10mA

10V

Soldering Information

Infrared or Convection Reflow

(20 sec.) 235˚C

Wave Soldering Lead Temp

(10 sec.) 260˚C

Operating Ratings (Note 1)

Supply Voltage 5.5V ≤ V

Operating Temperature Range

LM6171AI, LM6171BI −40˚C to +85˚C

Thermal Resistance (θ

)

N Package, 8-Pin Molded DIP 108˚C/W

M Package, 8-Pin Surface Mount 172˚C/W

≤ 34V

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= +15V, V−= −15V, VCM= 0V, and RL=1kΩ. Boldface limits apply at the temperature extremes

Typ LM6171AI LM6171BI

Symbol Parameter Conditions (Note 5) Limit Limit Units

(Note 6) (Note 6)

Input Offset Voltage 1.5 3 6 mV

58max

TC V

Input Offset Voltage Average Drift 6 µV/˚C

Input Bias Current 1 3 3 µA

44max

Input Offset Current 0.03 2 2 µA

33max

Input Resistance Common Mode 40 MΩ

Differential Mode 4.9

Open Loop 14 Ω

Output Resistance

CMRR Common Mode V

=±10V 110 80 75 dB

Rejection Ratio 75 70 min

PSRR Power Supply V

=±15V to±5V 95 85 80 dB

Rejection Ratio 80 75 min

Input Common-Mode CMRR ≥ 60 dB

13.5 V

Voltage Range

Large Signal Voltage RL=1kΩ 90 80 80 dB

Gain (Note 7) 70 70 min

= 100Ω 83 70 70 dB

60 60 min

Output Swing RL=1kΩ 13.3 12.5 12.5 V

12 12 min

−13.3 −12.5 −12.5 V

−12 −12 max

= 100Ω 11.6 9 9 V

8.5 8.5 min

−10.5 −9 −9 V

−8.5 −8.5 max

Continuous Output Current Sourcing, R

= 100Ω 116 90 90 mA

(Open Loop) (Note 8) 85 85 min

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15V DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= +15V, V−= −15V, VCM= 0V, and RL=1kΩ. Boldface

LM6171

limits apply at the temperature extremes

Typ LM6171AI LM6171BI

Symbol Parameter Conditions (Note 5) Limit Limit Units

(Note 6) (Note 6)

Sinking, R

= 100Ω 105 90 90 mA

85 85 max

Continuous Output Current Sourcing, R

(in Linear Region) Sinking, R

Output Short Sourcing 135 mA

=10Ω 100 mA

=10Ω 80 mA

Circuit Current Sinking 135 mA

Supply Current 2.5 4 4 mA

4.5 4.5 max

15V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= +15V, V−= −15V, VCM= 0V, and RL=1kΩ. Boldface limits apply at the temperature extremes

Typ LM6171AI LM6171BI

Symbol Parameter Conditions (Note 5) Limit Limit Units

(Note 6) (Note 6)

SR Slew Rate (Note 9) A

= +2, VIN=13V

= +2, VIN=10V

3600 V/µs

3000

GBW Unity Gain-Bandwidth Product 100 MHz

−3 dB Frequency A

= +1 160 MHz

= +2 62 MHz

φm Phase Margin 40 deg

Settling Time (0.1%) AV= −1, V

= 500Ω

Propagation Delay V

=±5V, RL= 500Ω,6 ns

=−2

=±5V 48 ns

OUT

Differential Gain (Note 10) 0.03 %

Differential Phase (Note 10) 0.5 deg

Input-Referred f = 1 kHz

Voltage Noise

Input-Referred f = 1 kHz

Current Noise

5V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= +5V, V−= −5V, VCM= 0V, and RL=1kΩ. Boldface lim- its apply at the temperature extremes

Typ LM6171AI LM6171BI

Symbol Parameter Conditions (Note 5) Limit Limit Units

(Note 6) (Note 6)

Input Offset Voltage 1.2 3 6 mV

58max

TC V

Input Offset Voltage 4 µV/˚C

Average Drift

Input Bias Current 1 2.5 2.5 µA

3.5 3.5 max

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Input Offset Current 0.03 1.5 1.5 µA

5V DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= +5V, V−= −5V, VCM= 0V, and RL=1kΩ. Boldface lim- its apply at the temperature extremes

Typ LM6171AI LM6171BI

Symbol Parameter Conditions (Note 5) Limit Limit Units

(Note 6) (Note 6)

2.2 2.2 max

Input Resistance Common Mode 40 MΩ

Differential Mode 4.9

Open Loop 14 Ω

Output Resistance

CMRR Common Mode V

=±2.5V 105 80 75 dB

Rejection Ratio 75 70 min

PSRR Power Supply V

=±15V to±5V 95 85 80 dB

Rejection Ratio 80 75 min

Input Common-Mode CMRR ≥ 60 dB

3.7 V

Voltage Range

Large Signal Voltage RL=1kΩ 84 75 75 dB

Gain (Note 7) 65 65 min

= 100Ω 80 70 70 dB

60 60 min

Output Swing RL=1kΩ 3.5 3.2 3.2 V

33min

−3.4 −3.2 −3.2 V

−3 −3 max

= 100Ω 3.2 2.8 2.8 V

2.5 2.5 min

−3.0 −2.8 −2.8 V

−2.5 −2.5 max

Continuous Output Current Sourcing, R

= 100Ω 32 28 28 mA

(Open Loop) (Note 8) 25 25 min

Sinking, R

= 100Ω 30 28 28 mA

25 25 max

Output Short Sourcing 130 mA

Circuit Current Sinking 100 mA

Supply Current 2.3 3 3 mA

3.5 3.5 max

LM6171

5V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= +5V, V−= −5V, VCM= 0V, and RL=1kΩ. Boldface limits apply at the temperature extremes

Typ LM6171AI LM6171BI

Symbol Parameter Conditions (Note 5) Limit Limit Units

(Note 6) (Note 6)

SR Slew Rate (Note 9) A

= +2, VIN= 3.5 V

750 V/µs

GBW Unity Gain-Bandwidth 70 MHz

Product

−3 dB Frequency A

= +1 130 MHz

=+2 45

φm Phase Margin 57 deg

Settling Time (0.1%) AV= −1, V

= 500Ω

= +1V, 60 ns

OUT

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5V AC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= +5V, V−= −5V, VCM= 0V, and RL=1kΩ. Boldface

LM6171

limits apply at the temperature extremes

Typ LM6171AI LM6171BI

Symbol Parameter Conditions (Note 5) Limit Limit Units

(Note 6) (Note 6)

Propagation Delay V

Differential Gain (Note 10) 0.04 %

Differential Phase (Note 10) 0.7 deg

Input-Referred f = 1 kHz

=±1V, RL= 500Ω,8 ns

=−2

Voltage Noise

Input-Referred f = 1 kHz

Current Noise

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 and the test conditions, see the Electrical Characteristics.

Note 2: Human body model, 1.5 kΩ in series with 100 pF.

Note 3: Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150˚C.

Note 4: The maximum power dissipation is a function of T

J(max)−TA

Note 5: Typical Values represent the most likely parametric norm.

Note 6: All limits are guaranteed by testing or statistical analysis.

Note 7: Large signal voltage gain is the total output swing divided by the input signal required to produce that swing. For V

OUT

Note 8: The open loop output current is the output swing with the 100Ω load resistor divided by that resistor.

Note 9: Slew rate is the average of the rising and falling slew rates.

Note 10: Differential gain and phase are measured with A

)/θJA. All numbers apply for packages soldered directly into a PC board.

=±1V.

, θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD=

J(max)

=±15V, V

= +2, VIN=1VPPat 3.58 MHz and both input and output 75Ω terminated.

=±5V. For VS= +5V,

OUT

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LM6171

Typical Performance Characteristics Unless otherwise noted, T

Supply Current vs. Supply Voltage Supply Current vs. Temperature

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Input Offset Voltage vs. Temperature Input Bias Current vs. Temperature

= 25˚C

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Input Offset Voltage vs. Common Mode Voltage Short Circuit Current vs. Temperature (Sourcing)

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