LMH6618MK NSC [National Semiconductor], LMH6618MK Datasheet

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LMH6618MK

Manufacturer Part Number
LMH6618MK
Description
130 MHz, 1.25 mA Rail-to-Rail Input and Output Operational Amplifier with Shutdown
Manufacturer
NSC [National Semiconductor]
Datasheet
© 2007 National Semiconductor Corporation
LMH6618
130 MHz, 1.25 mA Rail-to-Rail Input and Output Operational
Amplifier with Shutdown
General Description
The LMH6618 is a 130 MHz rail-to-rail input and output am-
plifier designed for ease of use in a wide range of applications
requiring high speed, low supply current, low noise, and the
ability to drive complex ADC and video loads. The operating
voltage range extends from 2.7V to 11V and the supply cur-
rent is typically 1.25 mA at 5V.
The amplifier’s voltage feedback design topology provides
balanced inputs and high open loop gain for ease of use and
accuracy in applications such as active filter design. Offset
voltage is typically 0.1 mV and settling time to 0.01% is 120
ns which combined with an 80 dBc SFDR at 1 MHz makes
the part suitable for use as an input buffer for popular 10-bit
and 12-bit mega-sample ADCs.
The input common mode range extends 200 mV beyond the
supply rails. The output swings to within 270 mV of the supply
rails for a 150Ω load and 83 mV of the supply rail for a 1 kΩ
load providing true single supply operation and maximum sig-
nal dynamic range on low power rails. The amplifier output
will source and sink 35 mA and drive up to 15 pF loads without
the need for external compensation.
The LMH6618 has an active low disable pin which reduces
the supply current to 72 µA and is offered in the space saving
6-Pin TSOT23 package. The LMH6618 is available with a
−40°C to +125°C extended industrial temperature grade.
Typical Application
WEBENCH
®
is a registered trademark of National Semiconductor Corporation.
201958
Features
V
specified.
Applications
S
= 5V, R
Operating voltage range
Supply current
Small signal bandwidth
Slew rate
Settling time to 0.1%
Settling time to 0.01%
SFDR (f = 1 MHz, A
0.1 dB bandwidth (A
Low voltage noise
Industrial temperature grade
Rail-to-Rail input and output
ADC driver
DAC buffer
Active filters
High speed sensor amplifier
Current sense amplifier
Portable video
STB, TV video amplifier
L
= 1 kΩ, T
A
= 25°C and A
V
V
= +1, V
= +2)
OUT
V
= 2 V
= +1, unless otherwise
PP
−40°C to +125°C
20195829
)
www.national.com
August 2007
2.7V to 11V
10 nV/
130 MHz
1.25 mA
15 MHz
55 V/µs
80 dBc
120 ns
90 ns
Hz

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LMH6618MK Summary of contents

Page 1

LMH6618 130 MHz, 1.25 mA Rail-to-Rail Input and Output Operational Amplifier with Shutdown General Description The LMH6618 is a 130 MHz rail-to-rail input and output am- plifier designed for ease of use in a wide range of applications requiring high ...

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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 2) Human Body Model For input pins only For all other pins Machine Model +3V Electrical ...

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Symbol Parameter CMVR Input Voltage Range CMRR Common Mode Rejection Ratio V A Open Loop Gain OL Output DC Characteristics V Output Swing High O (Voltage from V + Supply Rail) Output Swing Low (Voltage from V − Supply Rail) ...

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Symbol Parameter DP Differential Phase Time Domain Response t /t Rise & Fall Time Slew Rate t 0.1% Settling Time s_0.1 t 0.01% Settling Time s_0.01 Distortion and Noise Performance SFDR Spurious Free Dynamic Range e Input ...

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Symbol Parameter Power Supply Performance PSRR Power Supply Rejection Ratio I Supply Current S I Disable Shutdown Current SD ±5V Electrical Characteristics 5V, V − = −5V, DISABLE = 5V, V Boldface Limits apply at temperature extremes. ...

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Symbol Parameter CMRR Common Mode Rejection Ratio A Open Loop Gain OL Output DC Characteristics V Output Swing High O (Voltage from V + Supply Rail) Output Swing Low (Voltage from V − Supply Rail) I Linear Output Current OUT ...

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... Connection Diagram Ordering Information Package Part Number LMH6618MK 6-Pin TSOT23 LMH6618MKX 6-Pin TSOT23 20195801 Top View Package Marking Transport Media 1k Units Tape and Reel AE4A 3k Units Tape and Reel 7 NSC Drawing MK06A www.national.com ...

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Typical Performance Characteristics unless otherwise specified. Closed Loop Frequency Response for Various Supplies Closed Loop Frequency Response for Various Supplies Closed Loop Frequency Response for Various Temperatures www.national.com 25° Closed ...

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Closed Loop Gain vs. Frequency for Various Gains ±0.1 dB Gain Flatness for Various Supplies Small Signal Frequency Response with Capacitive Load and Various R ISO Large Signal Frequency Response 20195830 Small Signal Frequency Response with Various Capacitive Load 20195832 ...

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HD3 vs. Frequency and Supply Voltage HD2 and HD3 vs. Common Mode Voltage HD2 vs. Frequency and Gain www.national.com HD2 and HD3 vs. Frequency and Load 20195836 HD2 and HD3 vs. Common Mode Voltage 20195872 HD3 vs. Frequency and Gain ...

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Open Loop Gain/Phase 20195833 HD3 vs. Output Swing 20195844 HD2 vs. Output Swing 20195869 HD2 vs. Output Swing HD2 vs. Output Swing HD3 vs. Output Swing 11 20195843 20195845 20195846 www.national.com ...

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HD3 vs. Output Swing Settling Time vs. Input Step Amplitude (Output Slew and Settle Time www.national.com 20195870 20195821 OUT 20195849 12 THD vs. Output Swing 20195847 Input Noise vs. Frequency 20195876 V vs OUT ...

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V vs 20195851 V vs. V (npn 20195853 V Distribution (pnp and npn) OS 20195877 V vs. V (pnp vs OUT I vs. V (pnp 20195852 20195854 ...

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I vs. V (npn vs. V OUT V vs. V OUT www.national.com 20195856 S 20195858 Closed Loop Output Impedance vs. Frequency A S 20195860 20195857 V vs. V OUT S 20195859 ...

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PSRR vs. Frequency 20195837 CMRR vs. Frequency 20195823 Small Signal Step Response 20195806 PSRR vs. Frequency Small Signal Step Response Small Signal Step Response 15 20195838 20195805 20195804 www.national.com ...

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Small Signal Step Response Small Signal Step Response Small Signal Step Response www.national.com Small Signal Step Response 20195808 Small Signal Step Response 20195807 Small Signal Step Response 20195812 16 20195809 20195811 20195810 ...

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Large Signal Step Response 20195813 Overload Recovery Waveform 20195824 Large Signal Step Response I vs DISABLE 17 20195814 20195861 www.national.com ...

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Application Information The LMH6618 is based on National Semiconductor’s propri- etary VIP10 dielectrically isolated bipolar process. This de- vice family architecture features the following: • Complimentary bipolar devices with exceptionally high f ∼ ( 8GHz) even under low supply voltage ...

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TABLE 1. Performance Data for the LMH6618 Driving an ADC121S101 Parameter Signal Frequency Signal Amplitude SINAD SNR THD SFDR ENOB When the op amp and the ADC are using the same supply important that both devices are well ...

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DIFFERENTIAL ADC DRIVER The circuit in Figure 3 can be used to drive both inputs of a differential ADC. Figure 5 shows the LMH6618 driving an AD- www.national.com FIGURE 4. LMH6618 and ADC121S101 Layout C121S705. The ADC121S705 is a fully ...

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DC LEVEL SHIFTING Often a signal must be both amplified and level shifted while using a single supply for the op amp. The circuit in Figure 6 can do both of these tasks. The procedure for specifying the resistor values ...

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CURRENT SENSE AMPLIFIER With it’s rail-to-rail input and output capability, low V low I the LMH6618 is an ideal choice for a current sense B amplifier application. Figure 8 shows the schematic of the LMH6618 set low-side ...

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TABLE 2. TIA (Figure 1) Compensation and Performance Results (pF) (pF 100 102 222 224 Note: GBWP = 65 MHz ...

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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 6-Pin TSOT23 NS Package Number MK06A 24 ...

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Notes 25 www.national.com ...

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THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. NATIONAL MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE ...

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