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PDF LMV118 Data sheet ( Hoja de datos )
| Número de pieza | LMV118 | |
| Descripción | Low Voltage / 45MHz / Rail-to-Rail Output Operational Amplifiers with Shutdown Option | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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October 2003
LMV116/LMV118
Low Voltage, 45MHz, Rail-to-Rail Output Operational
Amplifiers with Shutdown Option
General Description
The LMV116 (single) rail-to-rail output voltage feedback am-
plifiers offer high speed (45MHz), and low voltage operation
(2.7V) in addition to micro-power shutdown capability
(LMV118).
Output voltage range extends to within 20mV of either sup-
ply rail, allowing wide dynamic range especially in low volt-
age applications. Even with low supply current of 600µA,
output current capability is kept at a respectable ±20mA for
driving heavier loads. Important device parameters such as
BW, Slew Rate and output current are kept relatively inde-
pendent of the operating supply voltage by a combination of
process enhancements and design architecture.
For portable applications, the LMV118 provides shutdown
capability while keeping the turn-off current to l5µA. Both
turn-on and turn-off characteristics are well behaved with
minimal output fluctuations during transitions. This allows the
part to be used in power saving mode, as well as multiplex-
ing applications. Miniature packages (SOT23-5 & SOT23-6)
are further means to ease the adoption of these low power
high speed devices in applications where board area is at a
premium.
Features
(VS = 2.7V, TA = 25˚C, RL = 1kΩ to V+/2, AV = +1. Typical
values unless specified).
n −3dB BW
45MHz
n Supply voltage range
2.7V to 12V
n Slew rate
40V/µs
n Supply current
600µA
n Power down supply current
15µA
n Output short circuit current
32mA
n Linear output current
±20mA
n Input common mode voltage
−0.3V to 1.7V
n Output voltage swing
20mV from rails
n Input voltage noise
40nV/
n Input current noise
0.75pA/
Applications
n High speed clock buffer/driver
n Active filters
n High speed portable devices
n Multiplexing applications (LMV118)
n Current sense amplifier
n High speed transducer amplifier
Typical Application
20080704
Non-Inverting Clock Buffer Amplifier
© 2003 National Semiconductor Corporation DS200807
www.national.com
1 page  
±5V Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for at TJ = 25˚C, V+ = 5V, V− = −5V, VCM = VO = 0V, and RF = 2kΩ, and RL
= 1kΩ to V+/2. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
THSD
ISD
Shut-down Threshold
(LMV118)
Shutdown Pin Input Current
(LMV118)
IS ≤ 50µA
(Note 7)
Min
(Note 6)
Typ
(Note 5)
4.25
Max
(Note 6)
4.60
Units
V
−20 µA
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, 1.5kΩ in series with 100pF.
Note 3: Applies to both single-supply and split-supply operation. 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 TJ(MAX), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is
PD = (TJ(MAX) - TA)/ θJA . All numbers apply for packages soldered directly onto a PC board.
Note 5: Typical values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Positive current corresponds to current flowing into the device.
Note 8: Slew rate is the average of the rising and falling slew rates.
Note 9: Machine Model, 0Ω in series with 200pF.
Note 10: Short circuit test is a momentary test. See Note 11.
Note 11: Output short circuit duration is infinite for VS < 6V at room temperature and below. For VS > 6V, allowable short circuit duration is 1.5ms.
Note 12: Offset voltage average drift determined by dividing the change in VOS at temperature extremes into the total temperature change.
Note 13: Guaranteed based on characterization only.
Connection Diagrams
SOT23-5 (LMV116)
SOT23-6 (LMV118)
Top View
Ordering Information
Package
5-Pin SOT-23
6-Pin SOT-23
Part Number
LMV116MF
LMV116MFX
LMV118MF
LMV118MFX
20080759
Package Marking
AC1A
AD1A
Top View
Transport Media
1k Units Tape and Reel
3k Units Tape and Reel
1k Units Tape and Reel
3k Units Tape and Reel
20080760
NSC Drawing
MF05A
MF06A
5 www.national.com
5 Page 
Application Notes (Continued)
PRINTED CIRCUIT BOARD LAYOUT, COMPONENT
VALUES SELECTION, AND EVALUATION BOARDS
Generally, a good high-frequency layout will keep power
supply and ground traces away from the inverting input and
output pins. Parasitic capacitances on these nodes to
ground will cause frequency response peaking and possible
circuit oscillations (see Application Note OA-15 for more
information).
Another important parameter, is the component values se-
lection. Choosing large valued external resistors, will effect
the closed loop behavior of the stage because of the inter-
action of these resistors with parasitic capacitances. These
capacitors could be inherent to the device or a by-product of
the board layout and component placement. Either way,
keeping the resistor values lower, will diminish this interac-
tion. On the other hand, choosing very low value resistors
could load down nodes and will contribute to higher overall
power dissipation.
National Semiconductor suggests the following evaluation
boards as a guide for high frequency layout and as an aid in
device testing and characterization:
Device
LMV116
LMV118
Package
SOT23-5
SOT23-6
Evaluation
Board PN
CLC730068
CLC730116
These free evaluation boards are shipped when a device
sample request is placed with National Semiconductor.
11 www.national.com
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet LMV118.PDF ] | |
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