LM6182AMN National Semiconductor, LM6182AMN Datasheet

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LM6182AMN

Manufacturer Part Number
LM6182AMN
Description
Dual 100 mA Output/ 100 MHz Current Feedback Amplifier
Manufacturer
National Semiconductor
Datasheet
© 1999 National Semiconductor Corporation
LM6182
Dual 100 mA Output, 100 MHz Current Feedback
Amplifier
General Description
The LM6182 dual current feedback amplifier offers an unpar-
alleled combination of bandwidth, slew-rate, and output cur-
rent. Each amplifier can directly drive a 2V signal into a 50
or 75
dustrial temperature range. This represents a radical en-
hancement in output drive capability for a dual 8-pin
high-speed amplifier making it ideal for video applications.
Built on National’s advanced high-speed VIP II
Integrated
current-feedback providing bandwidth that does not vary
dramatically with gain; 100 MHz at Av = −1, 60 MHz at Av =
−10. With a slew rate of 2000 V/µsec, 2nd harmonic distor-
tion of −50 dBc at 10 MHz and settling time of 50 ns (0.1%),
the two independent amplifiers of the LM6182 offer perfor-
mance that is ideal for data acquisition, high-speed ATE, and
precision pulse amplifier applications.
See the LM6181 data sheet for a single amplifier with these
same features.
Typical Application
VIP II
is a trademark of National Semiconductor Corporation.
back-terminated coax cable system over the full in-
PNP)
process,
the
LM6182
DS011926
(Vertically
employs
Features
(Typical unless otherwise noted)
n Slew Rate:
n Closed Loop Bandwidth: 100 MHz
n Settling Time (0.1%): 50 ns
n Low Differential Gain and Phase Error: 0.05%, 0.04˚
n Low Offset Voltage: 2 mV
n High Output Drive:
n Characterized for Supply Ranges:
n Improved Performance over OP260 and LT1229
Applications
n Coax Cable Driver
n Professional Studio Video Equipment
n Flash ADC Buffer
n PC and Workstation Video Boards
n Facsimile and Imaging Systems
R
L
= 150
DS011926-1
2000 V/µs
DS011926-2
±
10V into 150
±
5V and
www.national.com
±
April 1994
15V

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LM6182AMN Summary of contents

Page 1

... ATE, and precision pulse amplifier applications. See the LM6181 data sheet for a single amplifier with these same features. Typical Application VIP II ™ trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS011926 Features (Typical unless otherwise noted) n Slew Rate: 2000 V/µs n Closed Loop Bandwidth: 100 MHz n Settling Time (0 ...

Page 2

... Connection Diagrams Dual-In-Line Package (J) Order Number LM6182AMJ/883 See NS Package Number J14A Order Number LM6182IN, LM6182AIN or LM6182AMN www.national.com Small Outline Package (M) DS011926-51 * Heat Sinking Pins (Note 3) Order Number LM6182IM or LM6182AIM See NS Package Number M16A Dual-In-Line Package (N) See NS Package Number N08E ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Differential Input Voltage Input Voltage Inverting Input Current Output Short Circuit ± 15V DC Electrical Characteristics The following specifications apply for supply voltage = noted. Boldface limits apply at the temperature extremes ...

Page 4

DC Electrical Characteristics The following specifications apply for supply voltage = noted. Boldface limits apply at the temperature extremes; all other limits T Symbol Parameter Z Transimpedance T I Supply Current S V Input Common Mode Voltage Range ...

Page 5

DC Electrical Characteristics The following specifications apply for supply voltage = noted. Boldface limits apply at the temperature extremes; all other limits T Symbol Parameter V Input Offset Voltage OS TCV Input Offset Voltage Drift OS I Inverting ...

Page 6

AC Electrical Characteristics The following specifications apply for supply voltage = noted. Boldface limits apply at the temperature extremes; all other limits T Symbol Parameter Xt Crosstalk Rejection BW Closed Loop Bandwidth −3 dB Closed Loop Bandwidth = ...

Page 7

AC Electrical Characteristics (Continued) Simplified Schematic 1/2 LM6182 7 DS011926-6 www.national.com ...

Page 8

Typical Performance Characteristics MAXIMUM POWER DERATING CURVES N-Package TYPICAL PERFORMANCE TEST CIRCUITS Non-Inverting: Small Signal Pulse Response, Slew Rate, −3 dB Bandwidth www.national.com M-Package DS011926-7 = Thermal Resistance with 2 square inches of 1 ounce copper tied ...

Page 9

TYPICAL PERFORMANCE TEST CIRCUITS Amplifier-to-Amplifier Isolation DS011926-11 CMRR (Continued) Input Voltage Noise PSRR ( DS011926-13 9 DS011926-12 DS011926-14 www.national.com ...

Page 10

Typical Performance Characteristics Inverting Gain Frequency Response = ± = − 820 V 15V DS011926-52 Non-Inverting Gain Frequency Response = ± 820 V 5V DS011926-55 Non-Inverting ...

Page 11

Typical Performance Characteristics noted. (Continued) Transimpedance vs Frequency = 150 R L DS011926-61 Settling Response ± 150 V 5V − ± DS011926-63 Suggested R and ...

Page 12

Typical Performance Characteristics noted. (Continued) PSRR ( S− Frequency 820 DS011926-69 Input Current Noise vs Frequency DS011926-72 Distortion vs Frequency = ± = +2, V 15V ...

Page 13

Typical Performance Characteristics noted. (Continued) Distortion vs Frequency ± − 150 , V = 2Vp DS011926-78 −3 dB Bandwidth = −1 vs Temperature DS011926-81 Small Signal Pulse ...

Page 14

Typical Performance Characteristics noted. (Continued) Settling Time vs = 820 Output Step 150 , A = − DS011926-87 Small Signal Pulse Response vs Closed-Loop Gain = 150 R L DS011926- Temperature t ...

Page 15

Typical Performance Characteristics noted. (Continued) PSRR vs Temperature DS011926-96 I (−) vs Temperature b DS011926-99 I (+) CMR vs Temperature b DS011926-A2 Output Swing vs Temperature DS011926-A5 ± 25˚C unless otherwise V 15V and CMRR ...

Page 16

Typical Applications CURRENT FEEDBACK TOPOLOGY For a conventional voltage feedback amplifier the resulting small-signal bandwidth is inversely proportional to the de- sired gain to a first order approximation based on the gain-bandwidth concept. In contrast, the current feedback amplifier topology, ...

Page 17

Typical Applications (Continued) = 820 4A 500 4B FIGURE 4. , 4B. Reducing R to Increase Bandwidth for f = +25 Large Closed-Loop Gains The extent of the amplifier’s dependence ...

Page 18

Typical Applications (Continued FIGURE 8. RC Limits Amplifier Bandwidth to 50 MHz, Eliminating Peaking in the Resulting Pulse Response as Compared to Figure 3A SLEW RATE CONSIDERATIONS The slew rate characteristics of current feedback amplifiers are different than ...

Page 19

Typical Applications (Continued) 10A 10B FIGURE 10. Resistive Isolation of C Provides Higher L Fidelity Pulse Response. R and Rs Could Also −1 and Improve Pulse Increased to Maintain A V Response Characteristics. POWER SUPPLY BYPASSING AND ...

Page 20

Typical Applications (Continued) FIGURE 12. Crosstalk Rejection The LM6182 crosstalk effect is minimized in applications that cascade the amplifiers by preceding amplifier A with ampli- fier B. START-UP TIME Using the circuit in Figure 13 , the LM6182 demonstrated a ...

Page 21

... FIGURE 16. Output Recovery from an Input that Exceeds the Common-Mode Range SPICE MACROMODEL A spice macromodel is available for the LM6182. Contact your local National Semiconductor sales office to obtain an operational amplifier spice model library disk. Typical Application Circuits UNITY GAIN AMPLIFIER The LM6182 current feedback amplifier is unity gain stable. ...

Page 22

... Small Outline If Military/Aerospace specified devices are required, contact the National Semiconductor Sales Office or Distributors for availability and specifications. www.national.com Temperature Range NSC Drawing Military Industrial −55˚C to +125˚C −40˚C to +85˚C LM6182AMN LM6182AIN LM6182IN N08E LM6182AIM LM6182IM M16A 22 ...

Page 23

Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM6182IM or LM6182AIM 14-Lead Dual-In-Line Package (J) Order Number LM6182AMJ/883 NS Package Number J14A Small Outline Package (M) NS Package Number M16A 23 www.national.com ...

Page 24

... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Order Number LM6182IN, LM6182AIN, or LM6182AMN 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 OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1 ...

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