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PDF LT6011 Data sheet ( Hoja de datos )
| Número de pieza | LT6011 | |
| Descripción | (LT6011 / LT6012) Rail-to-Rail Output Precision Op Amp | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LT6011 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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FEATURES
s 60µV Maximum Offset Voltage
s 300pA Maximum Input Bias Current
s 135µA Supply Current per Amplifier
s Rail-to-Rail Output Swing
s 120dB Minimum Voltage Gain, VS = ±15V
s 0.8µV/°C Maximum VOS Drift
s 14nV/√Hz Input Noise Voltage
s 2.7V to ±18V Supply Voltage Operation
s Operating Temperature Range: – 40°C to 85°C
s Space Saving 3mm × 3mm DFN Package
U
APPLICATIO S
s Thermocouple Amplifiers
s Precision Photo Diode Amplifiers
s Instrumentation Amplifiers
s Battery-Powered Precision Systems
s Low Voltage Precision Systems
LT6011/LT6012
Dual/Quad135µA, 14nV/√Hz,
Rail-to-Rail Output
Precision Op Amp
DESCRIPTIO
The LT®6011/LT6012 op amps combine low noise and
high precision input performance with low power con-
sumption and rail-to-rail output swing.
Input offset voltage is trimmed to less than 60µV. The low
drift and excellent long-term stability guarantee a high
accuracy over temperature and time. The 300pA maxi-
mum input bias current and 120dB minimum voltage gain
further maintain this precision over operating conditions.
The LT6011/LT6012 work on any power supply voltage
from 2.7V to 36V and draw only 135µA of supply current
on a 5V supply. The output swings to within 40mV of either
supply rail, making the amplifier a good choice for low
voltage single supply applications.
The LT6011/LT6012 are specified at 5V and ±15V supplies
and from –40°C to 85°C. The LT6011 (dual) is available in
SO-8 and space saving 3mm × 3mm DFN packages. The
LT6012 (quad) is available in SO-14 and 16-pin SSOP
packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
SoftSpan is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
Low Power Programmable Output Range 16-Bit SoftSpanTM DAC
VS+
LT1236-5
5+
1/2 LT6011
6–
C2
270pF
7
SUPPLY CURRENT ≅ 1.6mA TO 4mA
DEPENDING ON CODE
2
R1
R1
1
RCOM
R2
5V 9 VCC
0.1µF
16 15 3 4
R2 REF ROFS RFB
IOUT1 5
C1
270pF
VS+
2– 8
14
CLR
13
CS/LD
12
SCK
11
SDI
10
SDO
16-BIT DAC
LTC1592
IOUT2 6
7
AGND
8
GND
1/2 LT6011
3+
4
VS–
1
6011 TA01
VOUT
20V Output Step Response
5V/DIV
0V
5V/DIV
0V
100µs/DIV
6011 TA03
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1
1 page  
LT6011/LT6012
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VOS
∆VOS/∆T
Input Offset Voltage (Note 8)
Input Offset Voltage Drift (Note 6)
LT6011AS8, LT6012AS
TA = 0°C to 70°C
TA = –40°C to 85°C
LT6011ADD, LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
LT6011S8, LT6012S
TA = 0°C to 70°C
TA = –40°C to 85°C
LT6011DD, LT6012GN
TA = 0°C to 70°C
TA = –40°C to 85°C
LT6011AS8, LT6011S8, LT6012AS, LT6012S
LT6011ADD, LT6011DD, LT6012AGN, LT6012GN
q
q
q
q
q
q
q
q
q
q
30 135
160
185
35 160
210
225
35 150
175
200
40 200
250
275
0.2 0.8
0.2 1.3
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV/°C
µV/°C
IOS
Input Offset Current (Note 8)
LT6011AS8, LT6011ADD, LT6012AS LT6012AGN
20 300
pA
TA = 0°C to 70°C
q 450 p A
TA = –40°C to 85°C
q 600 pA
LT6011S8, LT6011DD, LT6012S, LT6012GN
150 900
pA
TA = 0°C to 70°C
TA = –40°C to 85°C
q 1200 p A
q 1500 pA
IB
Input Bias Current (Note 8)
LT6011AS8, LT6011ADD, LT6012AS, LT6012AGN
20 ±300
pA
TA = 0°C to 70°C
q ±450 p A
TA = –40°C to 85°C
q
±600
pA
LT6011S8, LT6011DD, LT6012S, LT6012GN
TA = 0°C to 70°C
TA = –40°C to 85°C
q
q
150 ±900
±1200
±1500
pA
pA
pA
Input Noise Voltage
0.1Hz to 10Hz
400 nVP-P
en
Input Noise Voltage Density
f = 1kHz
13 nV/√Hz
in
Input Noise Current Density
f = 1kHz, Unbalanced Source Resistance
0.1 pA/√Hz
RIN Input Resistance
Common Mode, VCM = ±13.5V
Differential
50 400
20
GΩ
MΩ
CIN
VCM
CMRR
Input Capacitance
Input Voltage Range
Common Mode Rejection Ratio
Guaranteed by CMRR
VCM = –13.5V to 13.5V
q ±13.5
115
q 112
4
±14
135
135
pF
V
dB
dB
Minimum Supply Voltage
Guaranteed by PSRR
q
±1.2 ±1.35
V
PSRR
AVOL
Power Supply Rejection Ratio
Large-Signal Voltage Gain
VS = ±1.35V to ±18V
RL = 10k, VOUT = –13.5V to 13.5V
q 112
1000
q 600
135
2000
dB
V/mV
V/mV
RL = 5k, VOUT = –13.5V to 13.5V
500
q 300
1500
V/mV
V/mV
Channel Separation
VOUT Maximum Output Swing
(Positive, Referred to V+)
VOUT = –13.5V to 13.5V
No Load, 50mV Overdrive
q 120
140
45 80
q 100
dB
mV
mV
ISOURCE = 1mA, 50mV Overdrive
140 195
mV
q 240 mV
Maximum Output Swing
(Negative, Referred to V–)
No Load, 50mV Overdrive
45 80
mV
q 100 mV
ISINK = 1mA, 50mV Overdrive
150 250
mV
q 300 mV
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5 Page 
LT6011/LT6012
APPLICATIO S I FOR ATIO
where en = 14nV/√Hz , in = 0.1pA/√Hz and RS is the total
impedance at the input, including the source impedance.
Capacitive Loads
The LT6011/LT6012 can drive capacitive loads up to 500pF
in unity gain. The capacitive load driving capability increases
as the amplifier is used in higher gain configurations. A small
series resistance between the output and the load further
increases the amount of capacitance that the amplifier can
drive.
Rail-to-Rail Operation
The LT6011/LT6012 outputs can swing to within millivolts
of either supply rail, but the inputs can not. However, for
most op amp configurations, the inputs need to swing less
than the outputs. Figure 1 shows the basic op amp configu-
rations, lists what happens to the op amp inputs and speci-
fies whether or not the op amp must have rail-to-rail inputs.
Select a rail-to-rail input op amp only when really neces-
sary, because the input precision specifications are usually
inferior.
VREF +
VIN +
VIN +
RG
VIN
–
RF
–
RG
RF
–
6011 F01
INVERTING: AV = –RF/RG
OP AMP INPUTS DO NOT MOVE,
BUT ARE FIXED AT DC BIAS
POINT VREF
INPUT DOES NOT HAVE TO BE
RAIL-TO-RAIL
VREF
NONINVERTING: AV = 1 + RF/RG
INPUTS MOVE BY AS MUCH AS
VIN, BUT THE OUTPUT MOVES
MORE
INPUT MAY NOT HAVE TO BE
RAIL-TO-RAIL
NONINVERTING: AV = 1
INPUTS MOVE BY AS MUCH AS
OUTPUT
INPUT MUST BE RAIL-TO-RAIL
FOR OVERALL CIRCUIT
RAIL-TO-RAIL PERFORMANCE
Figure 1. Some Op Amp Configurations Do Not Require Rail-to-Rail Inputs to Achieve Rail-to-Rail Outputs
WW
SI PLIFIED SCHE ATIC (One Amplifier)
V+
R3
Q7
R4
Q3
R1
500Ω
–IN
+IN
R2
500Ω
D1
Q1
Q8
Q4
Q21
B
A
Q5
Q22
Q17
C
B
D2 A
Q16
Q2 Q11
Q15 Q9
V–
R5
Q6
RC1 C1
C2
D3
D4
Q12 D5
Q10
R6
Q18 Q19
Q13
OUT
C3
Q14
Q20
6011 SS
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11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LT6011.PDF ] | |
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