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PDF LTC6087 Data sheet ( Hoja de datos )
| Número de pieza | LTC6087 | |
| Descripción | (LTC6087 / LTC6088) Quad 14MHz Rail-to-Rail CMOS Amplifiers | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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www.DataSheet4U.com
LTC6087/LTC6088
Dual/Quad 14MHz,
Rail-to-Rail CMOS Amplifiers
FEATURES
n Low Offset Voltage: 750μV Maximum
n Low Offset Drift: 5μV/°C Maximum
n Input Bias Current:
1pA (Typical at 25°C)
15pA (Typical at 85°C)
n Rail-to-Rail Inputs and Outputs
n Gain Bandwidth Product: 14MHz
n CMRR: 70dB Minimum
n PSRR: 93dB Minimum
n Input Noise Voltage Density: 12nV/√Hz
n Supply Current: 1.1mA per Amp
n Shutdown Current: 2.3μA per Amp
n 2.7V to 5.5V Operation Voltage
n Available in 8-Lead MSOP and 10-Lead DFN
Packages (LTC6087), 16-Lead SSOP and DFN
Packages (LTC6088)
APPLICATIONS
n Portable Test Equipment
n Medical Equipment
n Audio
n Data Acquisition
n High Impedance Transducer Amplifier
DESCRIPTION
The LTC®6087/LTC6088 are dual/quad, low noise, low
offset, rail-to-rail input/output, unity-gain stable CMOS
operational amplifiers that feature 1pA of input bias cur-
rent. A 14MHz gain bandwidth and 7.2V/μs slew rate,
combined with low noise (10nV/√Hz) and a low 0.75mV
offset, make the LTC6087/LTC6088 useful in a variety of
applications. The 1.1mA supply current and the shutdown
mode are ideal for signal processing applications which
demand performance with minimal power.
The LTC6087/LTC6088 has an output stage which swings
within 30mV of either supply rail to maximize signal dy-
namic range in low supply applications. The input common
mode range includes the entire supply voltage. These op
amps are specified on power supply voltages of 3V and
5V from –40°C to 125°C.
The dual amplifier LTC6087 is available in 8-lead MSOP
and 10-lead DFN packages. The quad amplifier LTC6088
is available in 16-lead SSOP and DFN packages.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
TYPICAL APPLICATION
Single Supply Shock/Vibration Sensor Amplifier
VS
100k
100k
VS
+
0.1μF 1/2 LTC6087
–
MURATA SHOCK
SENSOR
PKGS-00MX1
520pF, 0.57pC/g
www.murata.com
100M
1k
1% 100pF
+
1/2 LTC6087
–
100k
1%
VOUT
570mV/g
16Hz TO 10kHz
VS = 2.7V TO 5.5V
60878 TA01a
LTC6087 Input Bias Current
vs Temperature
1000
VS = 5V
VCM = 2.5V
100
10
1
25 40
55 70 85 100 115 130
TEMPERATURE (°C)
60878 TA01b
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LTC6087/LTC6088
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full specified
temperature range, otherwise specifications are at TA = 25°C. Test conditions are V+ = 5V, V– = 0V, VCM = 0.5V unless otherwise noted.
C SUFFIX
H SUFFIX
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX UNITS
CMRR Common Mode Rejection Ratio
0V ≤ VCM ≤ 5V
70
● 68
84
70 84
66
dB
dB
PSRR
VOUT
AVOL
Power Supply Rejection Ratio
Output Voltage, High (Referred to V+)
Output Voltage, Low (Referred to V–)
Large-Signal Voltage Gain
VS = 2.7V to 5.5V
No Load
ISOURCE = 1mA
ISOURCE = 5mA
No Load
ISINK = 1mA
ISINK = 5mA
RLOAD = 10k, 0.5V ≤ VOUT ≤ 4.5V
93 115
● 90
93 115
85
● 5 15
● 20 50
● 110 190
5 20
20 50
110 210
● 5 25
● 20 50
● 110 200
5 30
20 60
110 220
1000 6000
● 500
1000 6000
50
dB
dB
mV
mV
mV
mV
mV
mV
V/mV
V/mV
ISC Output Short-Circuit Current
Source and Sink
28
● 25
45
28 45
22
mA
mA
SR Slew Rate
AV = 1
7.2 7.2 V/μs
GBW Gain Bandwidth Product (fTEST = 20kHz) RLOAD = 50k
10
●9
14
10 14
8
MHz
MHz
Φ0 Phase Margin
RL = 10k, CL = 45pF, AV = 1
47 47 Deg
tS Settling Time 0.1%
VSTEP = 2V, AV = –1, RL = 1k
0.8 0.8 μs
IS Supply Current (per Amplifier)
No Load
0.85 1.05 1.25 0.85 1.05 1.25
● 0.80 1.05 1.30 0.75 1.05 1.40
mA
mA
Shutdown Current (per Amplifier)
Shutdown, VSHDN ≤ 1.2V
● 2.3 5
2.3 5
μA
VS Supply Voltage Range
Guaranteed by the PSRR Test
● 2.7
5.5 2.7
5.5 V
Channel Separation
Shutdown Logic
fS = 10kHz
SHDN High
SHDN Low
–120
● 3.5
●
1.2
–120
3.5
1.2
dB
V
V
tON Turn-On Time
VSHDN = 1.2V to 3.5V
6 6 μs
tOFF Turn-Off Time
Leakage of SHDN Pin
VSHDN = 3.5V to 1.2V
VSHDN = 0V
2
● 0.4 1
2
0.4 1
μs
μA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: A heat sink may be required to keep the junction temperature
below the absolute maximum. This depends on the power supply voltage
and the total output current.
Note 3: The LTC6087C/LTC6088C are guaranteed functional over the
operating temperature range of –40°C to 85°C. The LTC6087H/LTC6088H
are guaranteed functional over the operating temperature range of –40°C
to 125°C.
Note 4: The LTC6087C/LTC6088C are guaranteed to meet specified
performance from 0°C to 70°C. The LTC6087C/LTC6088C are designed,
characterized and expected to meet specified performance from –40°C to
125ºC but are not tested or QA sampled at these temperatures.
The LTC6087H/LTC6088H are guaranteed to meet specified performance
from –40°C to 125°C.
Note 5: ESD (electrostatic discharge) sensitive device. ESD protection
devices are used extensively internal to the LTC6087/LTC6088; however,
high electrostatic discharge can damage or degrade the device. Use proper
ESD handling precautions.
Note 6: This parameter is not 100% tested.
Note 7: This specification is limited by high speed automated test
capability. See Typical Performance Characteristic curves for actual
performance.
Note 8: Current noise is calculated from:
in = √2qIB,
where q = 1.6 • 10–19 coulombs.
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SIMPLIFIED SCHEMATIC
V+
M10 M11
1μA I2 V+
V– D4
+IN
D3
V+
V– D6
V+ –IN
D2 D5
SHDN
BIAS
GENERATION
V–
D1
NOTE: SHDN IS ONLY AVAILABLE
V– IN THE DFN10 PACKAGE
V–
LTC6087/LTC6088
VBIAS
M1 M2
M3
I1
M5
M6 M7
M4
R1 R2
–+
A1
M8
C1
V+
OUTPUT
CONTROL
D7
OUT
D8
A2
–+
V–
C2
R3 R4
M9
60878 SS
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11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LTC6087.PDF ] | |
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