LMH6657MFX National Semiconductor, LMH6657MFX Datasheet

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LMH6657MFX

Manufacturer Part Number
LMH6657MFX
Description
270 MHz Single Supply, Single Amplifier
Manufacturer
National Semiconductor
Datasheet

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© 2004 National Semiconductor Corporation
LMH6657/LMH6658
270MHz Single Supply, Single & Dual Amplifiers
General Description
The LMH6657/6658 are low-cost operational amplifiers that
operate from a single supply with input voltage range ex-
tending below the V
back topology and boasting fast slew rate (700V/µs) and
high speed (140MHz GBWP), the LMH6657 (Single) and
LMH6658 (dual) can be used in high speed large signal
applications. These applications include instrumentation,
communication devices, set-top boxes, etc.
With a -3dB BW of 100MHz (A
& 0.10˚ respectively, the LMH6657/6658 are well suited for
video applications. The output stage can typically supply
80mA into the load with a swing of about 1V from either rail.
For Industrial applications, the LMH6657/6658 are excellent
cost-saving choices. Input referred voltage noise is low and
the input voltage can extend below V
of low level signals that could be at or near the system
ground. With low distortion and fast settling, LMH6657/6658
can provide buffering for A/D and D/A applications.
The LMH6657/6658 versatility and ease of use is extended
even further by offering these high slew rate , high speed Op
Amps in miniature packages such as SOT23-5, SC70,
SOIC-8, and MSOP-8. Refer to the Ordering Information
section for packaging options available for each device.
Connection Diagrams
SOT23-5/SC70-5 (LMH6657)
. Based on easy to use voltage feed-
Top View
V
= +2) and DG & DP of 0.03%
to ease amplification
DS200532
20053261
Features
V
specified)
n −3dB BW (A
n Supply voltage range
n Slew rate, (V
n Supply current
n Output current
n Input common mode volt. 0.5V beyond V
n Output voltage swing (R
n Input voltage noise
n Input current noise
n DG error
n DP error
n THD (5MHz)
n Settling time (0.1%)
n Fully characterized for 5V, and
n Output overdrive recovery
n Output short circuit protected (Note 10)
n No output phase reversal with CMVR exceeded
Applications
n CD/DVD ROM
n ADC buffer amp
n Portable video
n Current sense buffer
n Portable communications
S
= 5V, T
A
= 25˚C, R
V
SOIC-8/MSOP-8 (LMH6658)
S
= +1)
=
±
5V)
L
L
= 100Ω (Typical values unless
= 2kΩ)
±
5V
20053263
0.8V from rails
, 1.7V from V
October 2004
www.national.com
2.1pA/
+80/−90mA
6.2mA/amp
11nV/
3V to 12V
270MHz
700V/µs
−55dBc
0.03%
0.10˚
37ns
18ns
+

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LMH6657MFX Summary of contents

Page 1

... Op Amps in miniature packages such as SOT23-5, SC70, SOIC-8, and MSOP-8. Refer to the Ordering Information section for packaging options available for each device. Connection Diagrams SOT23-5/SC70-5 (LMH6657) Top View © 2004 National Semiconductor Corporation Features specified) n − ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance Human Body Model Machine Model V Differential IN Output Short Circuit Duration Input Current + − Supply Voltage ( Voltage at Input/Output pins Soldering Information Infrared or Convection (20 sec ...

Page 3

Electrical Characteristics Unless otherwise specified, all limits guaranteed for specified) tied to V /2. Boldface limits apply at the temperature extremes. Symbol Parameter A Large Signal Voltage Gain VOL CMVR Input Common-Mode Voltage Range V Input ...

Page 4

Electrical Characteristics Unless otherwise specified, all limits guaranteed for at T fied) tied to 0V. Boldface limits apply at the temperature extremes. Symbol Parameter GB Gain Bandwidth Product SSBW −3dB BW GFP Frequency Response Peaking GFR Frequency Response ...

Page 5

Electrical Characteristics Unless otherwise specified, all limits guaranteed for at T fied) tied to 0V. Boldface limits apply at the temperature extremes. Symbol Parameter I Input Offset Current OS CMRR Common ModeRejection Ratio V +PSRR Positive Power Supply ...

Page 6

... Note 11: Output short circuit duration is infinite for V Note 12: Drift determined by dividing the change in parameter at temperature extremes by the total temperature change. Note 13: Output Swing not limited by Slew Rate limit. Ordering Information Package Part Number SOT23-5 LMH6657MF LMH6657MFX SC70-5 LMH6657MG LMH6657MGX SOIC-8 LMH6658MA LMH6658MAX MSOP-8 ...

Page 7

Typical Performance Characteristics Non-Inverting Frequency Response, Gain Non-Inverting Frequency Response, Phase Open Loop Gain/Phase vs. Frequency Inverting Frequency Response, 20053226 Inverting Frequency Response, Phase 20053227 Unity Gain Frequency vs. V 20053223 7 Gain 20053224 20053225 CM 20053241 www.national.com ...

Page 8

Typical Performance Characteristics Phase Margin vs. V Output vs. Input PSRR vs. Frequency www.national.com (Continued) CM 20053242 20053203 20053201 8 Output vs. Input 20053204 CMRR vs. Frequency 20053206 DG/DP vs. IRE 20053211 ...

Page 9

Typical Performance Characteristics Noise vs. Frequency Output Impedance vs. Frequency HD vs. V OUT (Continued) Crosstalk Rejection vs. Frequency 20053202 20053210 20053212 9 20053205 HD vs. V OUT 20053213 THD vs. V OUT 20053253 www.national.com ...

Page 10

Typical Performance Characteristics HD vs. Frequency V vs. I OUT SOURCE V vs. I OUT SOURCE www.national.com (Continued) HD vs. Frequency 20053214 20053243 20053245 10 20053215 V vs. I OUT SINK 20053244 V vs. I OUT SINK 20053246 ...

Page 11

Typical Performance Characteristics Short Circuit Current Settling Time vs. Output Step Amplitude 0.1% Settling Time vs. Cap Load (Continued) Short Circuit Current 20053230 Settling Time vs. Output Step Amplitude 20053208 20053209 11 20053231 20053207 ∆V vs OUT 20053240 ...

Page 12

Typical Performance Characteristics ∆V vs OUT I /Amp vs vs. V (for 3 Representative Units www.national.com (Continued) 20053239 CM 20053238 V 20053234 12 I /Amp vs 20053232 I /Amp vs. ...

Page 13

Typical Performance Characteristics V vs. V (for 3 Representative Units vs Small Signal Step Response (Continued 20053235 20053228 Small Signal Step Response 20053222 13 vs Typical Unit) CM 20053236 ...

Page 14

Typical Performance Characteristics Small Signal Step Response Large Signal Step Response Large Signal Step Response www.national.com (Continued) Small Signal Step Response 20053216 Large Signal Step Response 20053217 20053218 14 20053221 20053219 ...

Page 15

Application Section LARGE SIGNAL BEHAVIOR The LMH6657/6658 is specially designed to handle large output swings, such as those encountered in video wave- forms, without being slew rate limited. With 5V supply, the LMH6657/6658 slew rate limit is larger than that ...

Page 16

Output Characteristics OUTPUT CURRENT CAPABILITY The LMH6657/6658 output swing for a given load can be determined by referring to the Output Voltage vs. Output Current plots (Typical Performance Characteristics section). Characteristic Tables show the output current when the out- put ...

Page 17

... LMH6658MM @ 100KHz) These free evaluation boards are shipped when a device sample request is placed with National Semiconductor. An- other important parameter in working with high speed/high performance amplifiers, is the component values selection. Choosing external resistors that are large in value will effect the closed loop behavior of the stage because of the inter- action of these resistors with parasitic capacitances ...

Page 18

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 5-Pin SOT23 NS Package Number MF05A SC70-5 NS Package Number MAA05A 18 ...

Page 19

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 8-Pin SOIC NS Package Number M08A 8-Pin MSOP NS Package Number MUA08A 19 www.national.com ...

Page 20

... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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