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PDF LTC6258 Data sheet ( Hoja de datos )
| Número de pieza | LTC6258 | |
| Descripción | Power Efficient Rail-to-Rail I/O Op Amps | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LTC6258 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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FEATURES
n Gain Bandwidth Product: 1.3MHz
n Low Quiescent Current: 20µA
n C-Load™ Op Amp Drives all Capacitive Loads
n Offset Voltage: 400µV Maximum
n Rail-to-Rail Input and Output
n Supply Voltage Range: 1.8V to 5.25V
n EMI Rejection Ratio: 45dB at 1GHz
n Input Bias Current: 75nA Maximum
n CMRR/PSRR: 95dB/90dB
n Shutdown Current: 7µA Maximum
n Operating Temperature Range: –40°C to 125°C
n Single in 6-Lead TSOT-23, 2mm × 2mm DFN
Packages
n Dual in 8-Lead MS8, MS10, TS0T-23, 2mm × 2mm
DFN Packages
n Quad in MS16 Package
APPLICATIONS
n Micropower Active Filters
n Portable Instrumentation
n Battery or Solar Powered Systems
n Automotive Electronics
LTC6258/LTC6259/LTC6260
1.3MHz, 20µA Power
Efficient Rail-to-Rail I/O
Op Amps
DESCRIPTION
The LTC®6258/LTC6259/LTC6260 are single/dual/quad
operational amplifiers with low noise, low power, low
supply voltage, and rail-to-rail inputs and outputs. They
are unity gain stable with or without capacitive loads. They
feature 1.3MHz gain-bandwidth product, 0.24V/µs slew rate
while consuming only 20µA of supply current per amplifier
operating on supply voltages ranging from 1.8V to 5.25V.
The combination of low supply current, low supply volt-
age, high gain bandwidth product and low noise makes
the LTC6258 family unique among rail-to-rail input/output
op amps with similar supply current. These operational
amplifiers are ideal for power efficient applications.
For applications that require power-down, the LTC6258
in 2mm × 2mm DFN and LTC6259 MS10 packages
respectively offer shutdown which reduces the current
consumption to 7µA maximum.
The LTC6258 family can be used as plug-in replacements
for many commercially available op amps to reduce power
and improve input/output range and performance.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
Over-The-Top and C-Load are trademarks of Analog Devices, Inc. All other trademarks are the
property of their respective owners.
TYPICAL APPLICATION
Low Noise Reference
V+
LT6656
IN OUT
GND
RIN1
2.7k
5V
–
+ LTC6258
22µF
22µF
OUT
22µF
6258960 TA01
Reference Buffer Noise Density
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
0.01
OP AMP, 44µF CLOAD
OP AMP
FILTERED REFERENCE
REFERENCE OUTPUT
INSTRUMENT ONLY
* 2.7K + 22µF FILTER
0.1 1 10
FREQUENCY (kHz)
100
6258960 TA01a
For more information www.linear.com/LTC6258
6258960fa
1
1 page  
LTC6258/LTC6259/LTC6260
1 .8V ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full
operating temperature
unconnected.
range,
otherwise
specifications
are
at
TA
=
25°C.
VSUPPLY
=
1.8V,
VCM
=
VOUT
=
0.4V,
CL
=
10pF,
VSHDN
is
SYMBOL PARAMETER
VOS Input Offset Voltage
∆VOS/∆T Input Offset Voltage Drift
IB Input Bias Current (Note 7)
IOS Input Offset Current
en Input Voltage Noise Density
Input Noise Voltage
in Input Current Noise Density
RIN Input Resistance
CONDITIONS
VCM = V– + 0.3V
VCM = V+ – 0.3V
VCM = V– + 0.3V, V+ – 0.3V
VCM = V– + 0.3V
VCM = V+ – 0.3V
VCM = V– + 0.3V
VCM = V+ – 0.3V
f = 1kHz, VCM = 0.4V
f = 0.1Hz to 10Hz
f
f
=
=
1kHz,
1kHz,
VVCCMM
=
=
0V
1V
to
to
0.8V
1.8V
Differential
Common Mode
MIN
–400
l –1000
–400
l –1000
l –75
l –75
l –75
l –75
1
10
TYP
100
100
1.5
2
5
2
2
38
2
500
500
MAX UNITS
400 µV
1000 µV
400 µV
1000 µV
µV/°C
75 nA
75 nA
75 nA
75 nA
nV/√Hz
µVP-P
fA/√Hz
fA/√Hz
MΩ
MΩ
CIN Input Capacitance
Differential
Common Mode
0.65 pF
1.2 pF
CMRR Common Mode Rejection Ratio
VCM = 0.2V to 1.6V
70
l 61
90
dB
dB
IVR Input Voltage Range
l –0.1
1.9 V
PSRR Power Supply Rejection Ratio
VCM = 0.4V, VS = 1.8V to 5.25V
78
l 68
90
dB
dB
AV Large Signal Gain
VOUT = 0.5V to 1.3V, RLOAD = 100k
15
l 1.6
50
V/mV
V/mV
VOUT = 0.5V to 1.3V, RLOAD = 10k
4
l 0.4
10
V/mV
V/mV
VOL
Output Swing Low (Input Overdrive 30mV),
Measured from V–
No Load
15 30
mV
l 50 mV
ISINK = 100µA
80 110
mV
l 130 mV
ISINK = 1mA
150 200
mV
l 230 mV
For more information www.linear.com/LTC6258
6258960fa
5
5 Page 
LTC6258/LTC6259/LTC6260
PIN FUNCTIONS
–IN: Inverting Input of the Amplifier. Voltage range of this
pin can go from V– – 0.1V to V+ + 0.1V.
+IN: Noninverting Input of Amplifier. This pin has the same
voltage range as –IN.
V+: Positive Power Supply. Typically the voltage is from
1.8V to 5.25V. Split supplies are possible as long as the
voltage between V+ and V– is between 1.8V and 5.25V. A
bypass capacitor of 0.1µF as close to the part as possible
should be used between power supply pins or between
supply pins and ground.
V–: Negative Power Supply. It is normally tied to ground.
It can also be tied to a voltage other than ground as long
as the voltage between V+ and V– is from 1.8V to 5.25V.
If it is not connected to ground, bypass it with a capacitor
of 0.1µF as close to the part as possible.
SHDN: Active Low Shutdown. Shutdown threshold is 0.6V
above negative rail. If left unconnected, the amplifier will
be on.
OUT: Amplifier Output. Rail-to rail amplifier output capable
of delivering 4mA.
For more information www.linear.com/LTC6258
6258960fa
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet LTC6258.PDF ] | |
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