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PDF LT1801 Data sheet ( Hoja de datos )
| Número de pieza | LT1801 | |
| Descripción | Low Power Rail-to-Rail Input and Output Precision Op Amps | |
| Fabricantes | Linear | |
| Logotipo |  |
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LT1801/LT1802
Dual/Quad 80MHz, 25V/µs
Low Power Rail-to-Rail Input and
Output Precision Op Amps
FEATURES
DESCRIPTION
n Gain Bandwidth Product: 80MHz
n Input Common Mode Range Includes Both Rails
n Output Swings Rail-to-Rail
n Low Voltage Operation: Single or Split Supplies
2.3V to 12.6V
n Low Quiescent Current: 2mA/Amplifier Max
n Input Offset Voltage: 350μV Max
n Input Bias Current: 250nA Max
n 3mm × 3mm × 0.8mm DFN Package
n Large Output Current: 50mA Typ
n Low Voltage Noise: 8.5nV/√Hz Typ
n Slew Rate: 25V/μs Typ
n Common Mode Rejection: 105dB Typ
n Power Supply Rejection: 97dB Typ
n Open-Loop Gain: 85V/mV Typ
n Operating Temperature Range: – 40°C to 85°C
n LT1801 is Available in 8-Lead SO, MS8 and DFN
Packages
n LT1802 is Available in 14-Lead SO Package
APPLICATIONS
n Low Voltage, High Frequency Signal Processing
n Driving A/D Converters
n Rail-to-Rail Buffer Amplifiers
n Active Filters
n Video Line Driver
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
The LT®1801/LT1802 are dual/quad, low power, high speed
rail-to-rail input and output operational amplifiers with
excellent DC performance. The LT1801/LT1802 feature
reduced supply current, lower input offset voltage, lower
input bias current and higher DC gain than other devices
with comparable bandwidth.
Typically, the LT1801/LT1802 have an input offset voltage
of less than 100μV, an input bias current of less than 50nA
and an open-loop gain of 85 thousand.
The LT1801/LT1802 have an input range that includes
both supply rails and an output that swings within 20mV
of either supply rail to maximize the signal dynamic range
in low supply applications.
The LT1801/LT1802 maintain their performance for sup-
plies from 2.3V to 12.6V and are specified at 3V, 5V and
±5V supplies. The inputs can be driven beyond the supplies
without damage or phase reversal of the output.
The LT1801 is available in the MS8, SO-8 and the 3mm
× 3mm × 0.8mm dual fine pitch leadless package (DFN)
with the standard dual op amp pinout. The LT1802 features
the standard quad op amp configuration and is available
in the 14-pin plastic SO package. The LT1801/LT1802 can
be used as plug-in replacements for many op amps to
improve input/output range and performance.
For a single version of these amplifiers, see the LT1800
data sheet.
TYPICAL APPLICATION
3V, 1MHz, 4th Order Butterworth Filter
909Ω
909Ω
VIN
2.67k
220pF
47pF
–
1/2 LT1801
+
VS/2
1.1k
1.1k 2.21k
470pF
22pF
3V
–
1/2 LT1801
+
VOUT
18012 TA01
1MHz Filter Frequency Response
0
–20
–40
–60
–80
–100
–120
1k
10k 100k 1M 10M 100M
FREQUENCY (Hz)
18012 TA02
18012fc
1
1 page  
LT1801/LT1802
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the temperature range
of – 40°C < TA < 85°C. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VOS Input Offset Voltage
VCM = 0V
VCM = 0V (MS8)
VCM = 0V (DD)
VCM = VS
l
175 700
μV
l
200 850
μV
l
320 1150
μV
l
0.75 4
mV
ΔVOS Input Offset Shift
VCM = 0V to VS – 1.5V
l
30 300
μV
Input Offset Voltage Match
(Channel-to-Channel) (Note 9)
VCM = 0V
VCM = 0V (MS8)
VCM = 0V (DD)
l
200 1250
μV
l
280 1600
μV
l
320 1800
μV
VOS TC Input Offset Voltage Drift (Note 8)
l 1.5 5 μV/°C
IB Input Bias Current
VCM = VS – 0.2V
l
50 400
nA
l
600 2250
nA
Input Bias Current Match
(Channel-to-Channel) (Note 9)
VCM = 1V
VCM = VS – 0.2V
l
25 450
nA
l
25 700
nA
IOS Input Offset Current
VCM = 1V
VCM = VS – 0.2V
l
25 350
nA
l
25 350
nA
AVOL Large-Signal Voltage Gain
VS = 5V, VO = 0.5V to 4.5V, RL = 1k at VS/2
l 20
VS = 5V, VO = 1.5V to 3.5V, RL = 100Ω at VS/2 l
2
VS = 3V, VO = 0.5V to 2.5V, RL = 1k at VS/2
l 17.5
65
6
65
V/mV
V/mV
V/mV
CMRR Common Mode Rejection Ratio
VS = 5V, VCM = 0V to 3.5V
VS = 3V, VCM = 0V to 1.5V
l 81
l 73
101
93
dB
dB
CMRR Match (Channel-to-Channel) (Note 9) VS = 5V, VCM = 0V to 3.5V
VS = 3V, VCM = 0V to 1.5V
l 75
l 67
101
93
dB
dB
Input Common Mode Range
l0
VS V
PSRR Power Supply Rejection Ratio
VS = 2.5V to 10V, VCM = 0V
l 73
90
dB
PSRR Match (Channel-to-Channel) (Note 9) VS = 2.5V to 10V, VCM = 0V
l 67
90
dB
Minimum Supply Voltage (Note 6)
VCM = VO = 0.5V
l
2.3 2.5
V
VOL Output Voltage Swing Low (Note 7)
No Load
ISINK = 5mA
ISINK = 10mA
l
15 90
mV
l
105 250
mV
l
170 400
mV
VOH Output Voltage Swing High (Note 7)
No Load
ISOURCE = 5mA
ISOURCE = 10mA
l
25 90
mV
l
150 350
mV
l
300 700
mV
ISC Short-Circuit Current
VS = 5V
VS = 3V
l 12.5
l 12.5
30
30
mA
mA
IS Supply Current per Amplifier
l
2.1 3
mA
GBW Gain Bandwidth Product
Frequency = 2MHz
l 25
70
MHz
SR Slew Rate
VS = 5V, AV = – 1, RL = 1k, VO = 1V to 4V
l9
18
V/μs
18012fc
5
5 Page 
TYPICAL PERFORMANCE CHARACTERISTICS
LT1801/LT1802
Input Current Noise vs Frequency
3.0
VS = 5V, 0V
2.5
2.0
PNP ACTIVE
1.5 VCM = 2.5V
1.0
NPN ACTIVE
0.5 VCM = 4.25V
0
0.01
0.1 1
10
FREQUENCY (kHz)
100
18012 G17
Gain Bandwidth and Phase
Margin vs Temperature
100
GBW PRODUCT
90 VS = ±2.5V
80
GBW PRODUCT
70 VS = ±5V
60
50 PHASE MARGIN
VS = ±2.5V
PHASE MARGIN
VS = ±5V
60
50
40
30
20
10
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
18012 G20
0.1Hz to 10Hz Input Voltage
2000
VS = 5V, 0V
1000
0
–1000
–2000
0 1 2 3 4 5 6 7 8 9 10
TIME (SECONDS)
18012 G18
Gain Bandwidth and Phase
Margin vs Supply Voltage
100
TA = 25°C
90
80 GAIN BANDWIDTH
PRODUCT
70
60 60
PHASE MARGIN
50
40
30
20
0 1 2 3 4 5 6 7 8 9 10
TOTAL SUPPLY VOLTAGE (V)
18012 G19
Slew Rate vs Temperature
35
AV = –1
RF = RG = 1k
30 RL = 1k
VS = ±2.5V
25 VS = ±5V
20
15
10
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
18012 G21
Gain and Phase vs Frequency
70
100
60 80
PHASE
50 60
40 40
30
GAIN
20
20
0
10 –20
0 –40
–10
–20
–30
0.01
VS = ±2.5V
VS = ±5V
0.1 1 10
FREQUENCY (MHz)
–60
–80
–100
100 300
18012 G22
Gain vs Frequency (AV = 1)
12
RL = 1k
9 CL = 10pF
AV = 1
6
3 VS = ±2.5V
0
VS = ±5V
–3
–6
–9
–12
0.1
1 10
FREQUENCY (MHz)
100 300
18012 G23
Gain vs Frequency (AV = 2)
18
RL = 1k
15 CL = 10pF
AV = 2
12
9
6
VS = ±2.5V
3
VS = ±5V
0
–3
–6
0.1
1 10
FREQUENCY (MHz)
100 300
18012 G24
18012fc
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LT1801.PDF ] | |
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