LTC1050MJ8/883B [Linear]
OP-AMP, 5uV OFFSET-MAX, 2.5MHz BAND WIDTH, CDIP8;
| 型号： | LTC1050MJ8/883B |
| 厂家： | 
Linear |
| 描述： | OP-AMP, 5uV OFFSET-MAX, 2.5MHz BAND WIDTH, CDIP8 放大器 CD |
| 文件： | 总16页 (文件大小：226K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC1050
Precision Zero-Drift
Operational Amplifier
with Internal Capacitors
U
FEATURES
DESCRIPTIO
The LTC®1050 is a high performance, low cost zero-drift
operational amplifier. The unique achievement of the
LTC1050 is that it integrates on-chip the two sample-and-
hold capacitors usually required externally by other chop-
per amplifiers. Further, the LTC1050 offers better com-
bined overall DC and AC performance than is available
from other chopper stabilized amplifiers with or without
internal sample-and-hold capacitors.
■
No External Components Required
■
Noise Tested and Guaranteed
■
Low Aliasing Errors
Maximum Offset Voltage: 5µV
■
■
Maximum Offset Voltage Drift: 0.05µV/°C
■
Low Noise: 1.6µVP-P (0.1Hz to 10Hz)
■
Minimum Voltage Gain: 130dB
■
Minimum PSRR: 125dB
■
Minimum CMRR: 120dB
The LTC1050 has an offset voltage of 0.5µV, drift of
0.01µV/°C, DC to 10Hz, input noise voltage of 1.6µVP-P
and a typical voltage gain of 160dB. The slew rate of 4V/µs
andagainbandwidthproductof2.5MHzareachievedwith
only 1mA of supply current.
■
Low Supply Current: 1mA
■
Single Supply Operation: 4.75V to 16V
■
Input Common Mode Range Includes Ground
■
Output Swings to Ground
■
Typical Overload Recovery Time: 3ms
Overload recovery times from positive and negative satu-
ration conditions are 1.5ms and 3ms respectively, which
representsanimprovementofabout100timesoverchop-
peramplifiersusingexternalcapacitors.Pin5isanoptional
external clock input, useful for synchronization purposes.
U
APPLICATIO S
■
Thermocouple Amplifiers
■
Electronic Scales
■
Medical Instrumentation
■
The LTC1050 is available in standard 8-pin metal can,
plastic and ceramic dual-in-line packages as well as an
SO-8 package. The LTC1050 can be an improved plug-in
replacement for most standard op amps.
Strain Gauge Amplifiers
■
High Resolution Data Acquisition
■
DC Accurate RC Active Filters
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATIO
High Performance, Low Cost Instrumentation Amplifier
Noise Spectrum
5V
160
140
120
100
80
4
5V
1/2 LTC1043
3
2
7
7
8
+
6
V
OUT
LTC1050
–
11
12
4
60
DIFFERENTIAL
INPUT
C
C
H
1µF
S
–5V
1µF
1µF
40
20
R1
R2
0
13
16
14
17
1050 TA01
10
100
1k
10k
100k
FREQUENCY (Hz)
CMRR > 120dB AT DC
CMRR > 120dB AT 60Hz
DUAL SUPPLY OR SINGLE 5V
GAIN = 1 + R2/R1
1050 TA02
0.01µF
V
= 5µV
OS
COMMON MODE INPUT VOLTAGE EQUALS THE SUPPLIES
–5V
1050fb
1
LTC1050
W W W
U
(Note 1)
ABSOLUTE AXI U RATI GS
Total Supply Voltage (V+ to V–).............................. 18V
Input Voltage ........................ (V+ + 0.3V) to (V– – 0.3V)
Output Short-Circuit Duration......................... Indefinite
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
Operating Temperature Range
LTC1050AC/C .................................. –40°C to 85°C
LTC1050H ..................................... –40°C to 125°C
LTC1050AM/M (OBSOLETE) .......... –55°C to 125°C
W U
/O
PACKAGE RDER I FOR ATIO
TOP VIEW
ORDER PART
ORDER PART
NC
NUMBER
NUMBER
TOP VIEW
8
+
7
5
V
(CASE)
OUT
NC
–IN
+IN
1
3
LTC1050CS8
LTC1050HS8
LTC1050ACH
LTC1050CH
LTC1050AMH
LTC1050MH
NC
–IN
+IN
1
2
3
4
8
7
6
5
NC
–
+
+
2
6
V
OUT
EXT CLOCK
INPUT
–
4
V
EXT CLOCK
INPUT
–
V
S8 PART MARKING
S8 PACKAGE
8-LEAD PLASTIC SO
H PACKAGE
8-LEAD TO-5 METAL CAN
1050
1050H
TJMAX = 150°C
TJMAX = 150°C, θJA = 150°C/W
OBSOLETE PACKAGE
TOP VIEW
ORDER PART
NUMBER
ORDER PART
NUMBER
TOP VIEW
NC
–IN
+IN
1
2
3
4
NC
8
7
6
5
1
2
3
4
5
6
7
NC
NC
NC
14
13
12
11
10
9
NC
NC
+
V
LTC1050ACN8
LTC1050CN8
LTC1050CN
OUT
NC
–
V
EXT CLOCK
INPUT
+
V
–IN
+IN
NC
OUT
NC
N8 PACKAGE
8-LEAD PDIP
LTC1050ACJ8
LTC1050CJ8
LTC1050AMJ8
LTC1050MJ8
TJMAX = 150°C, θJA = 100°C/W
–
NC
8
V
J8 PACKAGE 8-LEAD CERDIP
TJMAX = 150°C, θJA = 100°C/W
N PACKAGE
14-LEAD PDIP
OBSOLETE PACKAGE
TJMAX = 150°C, θJA = 70°C/W
Consider the N8 Package for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The ■ denotes specifications which apply over the full operating temperature
ELECTRICAL CHARACTERISTICS
range, otherwise specifications are at TA = 25°C. VS = ±5V
LTC1050AM
TYP
LTC1050AC
TYP
PARAMETER
CONDITIONS
(Note 3)
(Note 3)
MIN
MAX
MIN
MAX
UNITS
µV
µV/°C
nV/√Mo
Input Offset Voltage
Average Input Offset Drift
Long Term Offset Voltage Drift
Input Offset Current
±0.5
±0.01 ±0.05
50
±20
±5
±0.5
±0.01 ±0.05
50
±20
±5
■
(Note 5)
(Note 5)
±60
±300
±30
±60
±150
±30
±100
pA
pA
pA
pA
■
■
Input Bias Current
Input Noise Voltage
±10
±10
±2000
0.1Hz to 10Hz (Note 6)
DC to 1Hz
1.6
0.6
2.1
1.6
0.6
2.1
µV
P-P
µV
P-P
1050fb
2
LTC1050
The ■ denotes specifications which apply over the full operating temperature
ELECTRICAL CHARACTERISTICS
range, otherwise specifications are at TA = 25°C. VS = ±5V
LTC1050AM
TYP
LTC1050AC
TYP
PARAMETER
CONDITIONS
MIN
MAX
MIN
MAX
UNITS
Input Noise Current
Common Mode Rejection Ratio
f = 10Hz (Note 4)
1.8
140
1.8
140
fA/√Hz
–
V
= V to 2.7V
114
110
125
130
114
110
125
130
dB
dB
dB
dB
V
V
CM
■
■
■
■
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
V = ±2.375V to ±8V
S
140
160
±4.7 ±4.85
±4.95
140
160
±4.7 ±4.85
±4.95
R = 10k, V
L
= ±4V
OUT
R = 10k
L
R = 100k
L
Slew Rate
Gain Bandwidth Product
Supply Current
R = 10k, C = 50pF
4
2.5
1
4
2.5
1
V/µs
MHz
mA
mA
L
L
No Load
1.5
2.3
1.5
2.3
■
Internal Sampling Frequency
2.5
2.5
kHz
The ■ denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VS = ±5V
LTC1050M/H
TYP
LTC1050C
TYP
PARAMETER
CONDITIONS
(Note 3)
(Note 3)
MIN
MAX
MIN
MAX
UNITS
µV
µV/°C
nV/√Mo
Input Offset Voltage
Average Input Offset Drift
Long Term Offset Voltage Drift
Input Offset Current
±0.5
±0.01 ±0.05
50
±5
±0.5
±0.01 ±0.05
50
±20
±5
■
(Note 5)
(Note 5)
±20
±100
±300
±125
±200
±75
±150
pA
pA
pA
pA
■
■
Input Bias Current
Input Noise Voltage
±10
±50
±10
±2000
R = 100Ω, 0.1Hz to 10Hz (Note 6)
1.6
0.6
1.6
0.6
µV
P-P
µV
P-P
S
R = 100Ω, DC to 1Hz
S
Input Noise Current
Common Mode Rejection Ratio
f = 10Hz (Note 4)
1.8
130
1.8
130
fA/√Hz
–
V
= V to 2.7V
114
110
100
114
110
dB
dB
dB
CM
LTC1050M/C
LTC1050H
■
■
Power Supply Rejection Ratio
V = ±2.375V to ±8V, LTC1050M/C
■
■
120
110
120
±4.7 ±4.85
±4.95
140
160
120
140
160
dB
dB
dB
V
V
S
LTC1050H
Large-Signal Voltage Gain
Maximum Output Voltage Swing
R = 10k, V
L
= ±4V
OUT
■
■
120
±4.7 ±4.85
±4.95
R = 10k
L
R = 100k
L
Slew Rate
Gain Bandwidth Product
Supply Current
R = 10k, C = 50pF
4
2.5
1
4
2.5
1
V/µs
MHz
mA
mA
L
L
No Load
1.5
2.3
1.5
2.3
■
Internal Sampling Frequency
2.5
2.5
kHz
Note 1: Absolute Maximum Ratings are those values beyond which the life
Note 4: Current Noise is calculated from the formula: In = √(2q • Ib)
–19
of the device may be impaired.
where q = 1.6 • 10
Coulomb.
+
Note 2: Connecting any terminal to voltages greater than V or less than
Note 5: At T ≤ 0°C these parameters are guaranteed by design and not
A
–
V may cause destructive latchup. It is recommended that no sources
tested.
operating from external supplies be applied prior to power-up of the
LTC1050.
Note 6: Every lot of LTC1050AM and LTC1050AC is 100% tested for
Broadband Noise at 1kHz and sample tested for Input Noise Voltage at
0.1Hz to 10Hz.
Note 3: These parameters are guaranteed by design. Thermocouple effects
preclude measurement of these voltage levels in high speed automatic test
systems. V is measured to a limit determined by test equipment
OS
capability.
1050fb
3
LTC1050
TYPICAL PERFOR A CE CHARACTERISTICS
U W
Offset Voltage
vs Sampling Frequency
10HzP-P Noise
vs Sampling Frequency
Common Mode Input Range
vs Supply Voltage
8
7
6
5
4
3
2
1
0
10
8
8
6
–
V
= ±5V
V
= ±5V
S
V
CM
= V
S
4
2
6
0
4
–2
–4
–6
–8
2
0
100
1k
SAMPLING FREQUENCY, f (Hz)
10k
2.0
2.5
3.0
3.5
4.0
4.5
0
±1 ±2 ±3
±4 ±5
SUPPLY VOLTAGE (V)
±6 ±7 ±8
S
SAMPLING FREQUENCY, f (kHz)
S
1050 G02
1050 G01
1050 G03
Sampling Frequency
vs Supply Voltage
Sampling Frequency
vs Temperature
Overload Recovery
5
4
3
2
1
0
3.5
3.0
2.5
2.0
V
S
= ±5V
T
A
= 25°C
200mV
0V
INPUT
0V
OUTPUT
–5V
1050 G6
AV = –100
S = ±5V
0.5ms/DIV
V
1.5
–50
0
25
50
75 100 125
–25
4
6
8
10
12
14
–
16
+
AMBIENT TEMPERATURE, T (°C)
TOTAL SUPPLY VOLTAGE, V TO V (V)
A
1050 G05
1050 G04
Short-Circuit Output Current
vs Supply Voltage
Supply Current vs Supply Voltage
Supply Current vs Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1.50
1.25
1.00
0.75
0.50
0.25
0
6
4
V
= ±5V
T
= 25°C
S
A
I
SOURCE
–
V
= V
OUT
2
0
–10
–20
–30
I
SINK
+
V
= V
OUT
4
8
10
12
14
–
16
–50
0
25
50
75 100 125
6
–25
4
8
10
12
14
–
16
6
+
+
TOTAL SUPPLY VOLTAGE, V TO V (V)
AMBIENT TEMPERATURE, T (°C)
A
TOTAL SUPPLY VOLTAGE, V TO V (V)
1050 G07
1050 G08
1050 G09
1050fb
4
LTC1050
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Gain/Phase vs Frequency
Small-Signal Transient Response
Large-Signal Transient Response
120
100
80
60
80
VOUT
100
120
140
160
180
200
220
PHASE
2V
100mV
STEP
60
GAIN
40
VIN = 6V
20
0
V
T
L
R
= ±5V
= 25°C
= 100pF
≥ 1k
S
A
1050 G11
1050 G12
AV = 1
AV = 1
–20
–40
C
RL = 10k
RL = 10k
L
C
L = 100pF
CL = 100pF
VS = ±5V
VS = ±5V
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
1050 G10
LTC1050 DC to 1Hz Noise
0.5µV
1050 G13
10 SEC
LTC1050 DC to 10Hz Noise
1µV
1050 G14
1 SEC
1050fb
5
LTC1050
TEST CIRCUITS
Electrical Characteristics Test Circuit
DC-10Hz Noise Test Circuit
475k
100k
1M
0.015µF
+
V
10Ω
1k
2
3
7
–
–
158k
316k
475k
6
LTC1050
LTC1050
OUTPUT
–
TO X-Y
RECORDER
LT®1012
0.015µF
0.015µF
+
+
R
L
4
+
–
1050 TC01
V
FOR 1Hz NOISE BW, INCREASE ALL
THE CAPACITORS BY A FACTOR OF10
1050 TC02
O U
W
U
PPLICATI
A
S I FOR ATIO
+
ACHIEVING PICOAMPERE/MICROVOLT
PERFORMANCE
V
Picoamperes
8
7
OUTPUT
1
6
In order to realize the picoampere level of accuracy of the
LTC1050,propercaremustbeexercised.Leakagecurrents
incircuitryexternaltotheamplifiercansignificantlydegrade
performance. High quality insulation should be used (e.g.,
Teflon,Kel-F);cleaningofallinsulatingsurfacestoremove
fluxes and other residues will probably be necessary—
particularly for high temperature performance. Surface
coating may be necessary to provide a moisture barrier in
high humidity environments.
OPTIONAL
EXTERNAL
CLOCK
2
5
4
3
–
V
GUARD
1050 F01
Figure 1
Board leakage can be minimized by encircling the input
connectionswithaguardringoperatedatapotentialclose
to that of the inputs: in inverting configurations the guard
ringshouldbetiedtoground;innoninvertingconnections
to the inverting input (see Figure 1). Guarding both sides
oftheprintedcircuitboardisrequired.Bulkleakagereduc-
tion depends on the guard ring width.
EMF generation. Junctions of copper wire from different
manufacturerscangeneratethermalEMFsof200nV/°C—
4 times the maximum drift specification of the LTC1050.
The copper/kovar junction, formed when wire or printed
circuit traces contact a package lead, has a thermal EMF of
approximately 35µV/°C—700 times the maximum drift
specification of the LTC1050.
Microvolts
Minimizing thermal EMF-induced errors is possible if ju-
dicious attention is given to circuit board layout and
component selection. It is good practice to minimize the
number of junctions in the amplifier’s input signal path.
Avoid connectors, sockets, switches and relays where
possible. In instances where this is not possible, attempt
to balance the number and type of junctions so that differ-
ential cancellation occurs. Doing this may involve
deliberately introducing junctions to offset unavoidable
Thermocouple effect must be considered if the LTC1050’s
ultralow drift is to be fully utilized. Any connection of dis-
similar metals forms a thermoelectric junction producing
anelectricpotentialwhichvarieswithtemperature(Seebeck
effect).Astemperaturesensors,thermocouplesexploitthis
phenomenon to produce useful information. In low drift
amplifier circuits the effect is a primary source of error.
Connectors, switches, relay contacts, sockets, resistors,
solder and even copper wire are all candidates for thermal
junctions.
1050fb
6
LTC1050
O U
W
U
PPLICATI
A
S I FOR ATIO
Figure 2 is an example of the introduction of an unneces-
sary resistor to promote differential thermal balance.
Maintainingcompensatingjunctionsinclosephysicalprox-
imity will keep them at the same temperature and reduce
thermal EMF errors.
PACKAGE-INDUCED OFFSET VOLTAGE
Package-induced thermal EMF effects are another impor-
tantsourceoferrors.Itarisesatthecopper/kovarjunctions
formed when wire or printed circuit traces contact a
package lead. Like all the previously mentioned thermal
EMF effects, it is outside the LTC1050’s offset nulling loop
and cannot be cancelled. The input offset voltage specifi-
cationoftheLTC1050isactuallysetbythepackage-induced
warm-up drift rather than by the circuit itself. The thermal
time constant ranges from 0.5 to 3 minutes, depending
upon package type.
NOMINALLY
UNNECESSARY
RESISTOR USED TO
THERMALLY BALANCE
OTHER INPUT RESISTOR
LEAD WIRE/SOLDER/COPPER
TRACE JUNCTION
+
LTC1050
OUTPUT
–
RESISTOR LEAD, SOLDER
COPPER TRACE JUNCTION
OPTIONAL EXTERNAL CLOCK
An external clock is not required for the LTC1050 to
operate. The internal clock circuit of the LTC1050 sets the
nominal sampling frequency at around 2.5kHz. This fre-
quencyischosensuchthatitishighenoughtoremovethe
amplifier 1/f noise, yet still low enough to allow internal
circuits to settle.The oscillator of the internal clock circuit
has a frequency 4 times the sampling frequency and its
output is brought out to Pin 5 through a 2k resistor. When
the LTC1050 operates without using an external clock,
Pin 5 should be left floating and capacitive loading on this
pin should be avoided. If the oscillator signal on Pin 5 is
used to drive other external circuits, a buffer with low
input capacitance is required to minimize loading on this
pin. Figure 3 illustrates the internal sampling frequency
versus capacitive loading at Pin 5.
1050 F02
Figure 2
When connectors, switches, relays and/or sockets are
necessary they should be selected for low thermal EMF
activity. The same techniques of thermally balancing and
coupling the matching junctions are effective in reducing
the thermal EMF errors of these components.
Resistors are another source of thermal EMF errors.
Table 1 shows the thermal EMF generated for different
resistors. Thetemperaturegradientacrosstheresistoris
important, not the ambient temperature. There are two
junctions formed at each end of the resistor and if these
junctions are at the same temperature, their thermal
EMFs will cancel each other. The thermal EMF numbers
areapproximateandvarywithresistorvalue. Highvalues
give higher thermal EMF.
3
V
= ±5V
S
2
1
Table 1. Resistor Thermal EMF
RESISTOR TYPE
Tin Oxide
THERMAL EMF/°C GRADIENT
~mV/°C
Carbon Composition
Metal Film
~450µV/°C
~20µV/°C
1
5
10
100
CAPACITANCE LOADING (pF)
Wire Wound
Evenohm
1050 F03
~2µV/°C
~2µV/°C
Manganin
Figure 3. Sampling Frequency vs Capacitance Loading at Pin 5
1050fb
7
LTC1050
PPLICATI
When an external clock is used, it is directly applied to
Pin 5. The internal oscillator signal on Pin 5 has very low
drive capability and can be overdriven by any external
signal. When the LTC1050 operates on ±5V power sup-
plies, the external clock level is TTL compatible.
O U
W
U
A
S I FOR ATIO
PSRR is guaranteed down to 4.7V (±2.35V) to ensure
proper operation down to the minimum TTL specified
voltage of 4.75V.
PIN COMPATIBILITY
Using an external clock can affect performance of the
LTC1050. Effects of external clock frequency on input
offset voltage and input noise voltage are shown in the
Typical Performance Characteristics section. The sam-
pling frequency is the external clock frequency divided
by 4. Input bias currents at temperatures below 100°C
are dominated by the charge injection of input switches
and they are basically proportional to the sampling
frequency. At higher temperatures, input bias currents
are mainly due to leakage currents of the input protection
devices and are insensitive to the sampling frequency.
The LTC1050 is pin compatible with the 8-pin versions of
7650, 7652 and other chopper-stabilized amplifiers. The
7650 and 7652 require the use of two external capacitors
connected to Pin 1 and Pin 8 that are not needed for the
LTC1050. Pin 1 and Pin 8 of the LTC1050 are not con-
nected internally while Pin 5 is an optional external clock
inputpin. TheLTC1050canbeadirectplug-inforthe7650
and 7652 even if the two capacitors are left on the circuit
board.
In applications operating from below 16V total power
supply, (±8V), the LTC1050 can replace many industry
standard operational amplifiers such as the 741, LM101,
LM108, OP07, etc. For devices like the 741 and LM101,
the removal of any connection to Pin 5 is all that is
needed.
LOW SUPPLY OPERATION
The minimum supply for proper operation of the LTC1050
is typically below 4V (±2V). In single supply applications,
U
O
TYPICAL APPLICATI S
Strain Gauge Signal Conditioner with Bridge Excitation
120Ω 2.5V
5V
*
5V
350Ω
LT1009
BRIDGE
3
2
7
+
6
OUTPUT
±2.5V
LTC1050
10k
ZERO
301k
RN60C
–
R2
0.1%
4
C**
–5V
5V
7
2
1N4148
–
R1
0.1%
GAIN
TRIM
2k
6
2N2907
LTC1050
3
1050 TA03
+
4
51Ω
*OPTIONAL REFERENCE OUT TO MONITORING
10-BIT A/D CONVERTER
**AT GAIN = 1000, 10Hz PEAK-TO-PEAK NOISE
IS <0.5LSB FOR 10-BIT RESOLUTION
2W
–5V
–5V
1050fb
8
LTC1050
U
O
TYPICAL APPLICATI S
Single Supply Thermocouple Amplifier
Air Flow Detector
1k
255k
1%
5V
10k
1k
1%
100Ω
100k
1%
0.068µF
2
3
7
–
6
LT1004-1.2
5V = NO AIR FLOW
0V = AIR FLOW
LTC1050
5V
7
43.2Ω
5V
2
3
+
1%
–
4
2
6
V
OUT
LTC1050
10mV/°C
7
–
+
–
+
K
+
AMBIENT
TEMPERATURE
STILL AIR
–
+
4
240Ω
LT1025A
0.1µF
TYPE K
TYPE K
–
GND
4
R
5
AIR FLOW
0°C ~ 100°C TEMPERATURE RANGE
1050 TA06
1050 TA04
Battery-Operated Temperature Monitor with 10-Bit Serial Output A/D
V
IN
= 9V
2
6
LT1021C-5
4
+
0.1µF
10µF
178k
0.1%
1k
0.1%
3.4k
1%
1N4148
0.33µF
LTC1092
2
1
2
3
4
8
7
6
5
7
–
CS
V
CC
TO µP*
47Ω
2
6
LTC1050
+IN
–IN
GND
CLK
V
IN
8
3
J
D
OUT
+
–
+
4
1µF
1µF
V
LT1025A
REF
1050 TA05
TYPE J
–
GND
4
R
0°C ~ 500°C TEMPERATURE RANGE
2°C MAX ERROR
*THERMOCOUPLE LINEARIZATION CODE AVAILABLE FROM LTC
5
1050fb
9
LTC1050
U
O
TYPICAL APPLICATI S
Fast Precision Inverter
±100mA Output Drive
10k
1%
10k
10k
5pF
V
IN
INPUT
5V
5V
100pF
100k
10k
2
3
7
100pF
–
V
OUT
1000pF
6
LTC1050
LT1010
–5V
5V
±100mA
+
5V
7
2
7
4
–
+
R
L
6
2
3
–5V
OUTPUT
LT318A
–
1050 TA08
6
3
FULL POWER BANDWIDTH = 10kHz
LTC1050
4
10k
V
V
= 5µV
OS
OS
+
/∆T = 50nV/°C
4
–5V
10k
GAIN = 10
–5V
1050 TA07
FULL POWER BANDWIDTH = 2MHz
SLEW RATE ≥ 40V/µs
SETTLING TIME = 5µs TO 0.01% (10V STEP)
OFFSET VOLTAGE = 5µV
OFFSET DRIFT = 50nV/°C
Ground Referred Precision Current Sources
LT1034
+
V
OUT
0 ≤ I
≤ 25mA*
OUT
–
OUT
1.235V
SET
+
+
I
=
0.2V ≤ V
≤ (V ) – 2V
OUT
V
R
*MAXIMUM CURRENT LIMITED BY
POWER DISSIPATION OF 2N2222
2N2222
10k
2
3
3
2
7
7
+
–
R
SET
6
6
LTC1050
LTC1050
R
10k
SET
+
–
4
4
0 ≤ I
≤ 25mA*
OUT
2N2907
LT1034
–
(V ) + 2V ≤ V
≤ –1.8V
1.235V
SET
OUT
I
=
OUT
–
R
V
*MAXIMUM CURRENT LIMITED BY
POWER DISSIPATION OF 2N2907
1050 TA09
+
V
OUT
–
1050fb
10
LTC1050
U
O
TYPICAL APPLICATI S
Precision Voltage Controlled Current Source
with Ground Referred Input and Output
5V
INPUT
0V TO
3.2V
3
2
7
+
6
2N2222
LTC1050
–
4
0.68µF
5V
1k
4
LTC1043
8
7
11
1µF
1µF
100Ω
12
14
17
13
16
V
IN
I
=
OUT
100Ω
0.001µF
1050 TA10
Sample-and-Hold Amplifier
Ultraprecision Voltage Inverter
LTC1043
2
V
7
8
–
IN
6
V
OUT
LTC1050
LTC1043
2
3
6
5
+
NC
11
C1
1µF
C2
+
V
1µF
C
L
2
3
7
0.01µF
12
–
6
V
16
17
LTC1050
SAMPLE HOLD
OUT
+
13
16
14
17
V
IN
1050 TA11
4
FOR 1V ≤ V ≤ 4V, THE HOLD STEP IS ≤300µV.
IN
–
V
ACQUISTION TIME IS DETERMINED BY THE SWITCH R
.
ON
–
+
0.01µF
C
TIME CONSTANT
L
FOR V = ±5V, (V ) + 1.8V < V < V
S
OUT
IN
V
= –V ±20ppm
IN
1050 TA12
MATCHING BETWEEN C1 AND C2 NOT REQUIRED
1050fb
11
LTC1050
TYPICAL APPLICATI S
U
O
Instrumentation Amplifier with Low Offset and Input Bias Current
C
2
3
1k
0.1%
100k
0.1%
–
6
LTC1050
+
–
INPUT
+
2
3
–
6
LTC1050
OUTPUT
+
3
2
1k
0.1%
100k
0.1%
+
6
LTC1050
–
1050 TA13
OFFSET VOLTAGE ≤ ±10µV
INPUT BIAS CURRENT = 15pA
CMRR = 100dB FOR GAIN = 100
INPUT REFERRED NOISE = 5µV FOR C = 0.1µF
P-P
= 20µV FOR C = 0.01µF
P-P
Instrumentation Amplifier with 100V Common Mode Input Voltage
1k
1M
+
V
1M
1M
+
2
3
V
7
+
–
1k
6
2
3
7
LTC1050
V
–
IN
6
+
V
OUT
LTC1050
–
4
+
1k
–
4
V
–
1050 TA14
V
OUTPUT OFFSET ≤5mV
FOR 0.1% RESISTORS, CMRR = 54dB
Single Supply Instrumentation Amplifier
1k
1M
+
V
1M
+
2
3
V
7
–
1k
6
2
3
7
LTC1050
–
6
+
V
–V
LTC1050
OUT
IN
4
+V
+
IN
4
1050 TA15
OUTPUT OFFSET ≤5mV
FOR 0.1% RESISTORS, CMRR = 54dB
1050fb
12
LTC1050
U
O
TYPICAL APPLICATI S
Photodiode Amplifier
15pF
500k
5V
2
3
7
–
6
HP
5082-4204
V
LTC1050
OUT
1050 TA16
+
4
500k
6 Decade Log Amplifier
MAT-01
MAT-01
22pF
0.0022µF
5V
3k
1%
5V
5V
7
25k
2.5V
2.5M
0.1%
10k
0.1%
†
2M
1%
2
3
2
7
15.7k
0.1%
V
†
–
–
IN
1N4148
6
6
I
IN
LTC1050
LTC1050
LT1009
3
1k*
0.1%
+
+
1050 TA17
V
OUT
4
4
–5V
–5V
ERROR REFERRED TO INPUT <1%
I
V
IN
10mV
IN
FOR INPUT CURRENT RANGE 1nA ~ 1mA
*TEL LAB TYPE Q81
V
OUT
= –LOG
= –LOG
= –LOG(V ) – 2V
IN
(
)
(
)
1µA
†
CORRECTS FOR NONLINEARITIES
DC Accurate, 10Hz, 7th Order Lowpass Bessel Filter
8V
R
R′
R′
16k
196k
196k
3
2
7
V
+
IN
C
6
C2
0.047µF
C1
0.047µF
V
LTC1050
OUT
1
2
3
4
8
7
6
5
0.47µF
–
4
LTC1062
–8V
–8V
f
1050 TA18
CLK
1N4148
2kHz
0.1µF
• WIDEBAND NOISE 52µV
• LINEAR PHASE
• V ≤ ±6V
IN
RMS
8V
0.1µF
• CLOCK TO CUTOFF FREQUENCY RATIO = 200:1
1050fb
13
LTC1050
U
PACKAGE DESCRIPTIO
H Package
8-Lead TO-5 Metal Can (.200 Inch PCD)
(Reference LTC DWG # 05-08-1320)
0.335 – 0.370
(8.509 – 9.398)
DIA
0.027 – 0.045
(0.686 – 1.143)
0.305 – 0.335
(7.747 – 8.509)
0.040
45°TYP
PIN 1
0.028 – 0.034
(0.711 – 0.864)
0.050
(1.270)
MAX
(1.016)
0.165 – 0.185
(4.191 – 4.699)
MAX
0.200
(5.080)
TYP
REFERENCE
PLANE
SEATING
PLANE
GAUGE
PLANE
0.500 – 0.750
(12.700 – 19.050)
0.010 – 0.045*
(0.254 – 1.143)
H8(TO-5) 0.200 PCD 1197
0.110 – 0.160
(2.794 – 4.064)
INSULATING
STANDOFF
0.016 – 0.021**
(0.406 – 0.533)
*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND 0.045" BELOW THE REFERENCE PLANE
0.016 – 0.024
**FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS
(0.406 – 0.610)
J8 Package
8-Lead CERDIP (Narrow .300 Inch, Hermetic)
(Reference LTC DWG # 05-08-1110)
CORNER LEADS OPTION
(4 PLCS)
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.405
(10.287)
MAX
0.005
(0.127)
MIN
0.200
(5.080)
MAX
0.045 – 0.068
0.300 BSC
(0.762 BSC)
(1.143 – 1.727)
FULL LEAD
OPTION
6
5
4
8
7
0.015 – 0.060
(0.381 – 1.524)
0.025
(0.635)
RAD TYP
0.220 – 0.310
(5.588 – 7.874)
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
J8 1298
1
2
3
0.045 – 0.065
(1.143 – 1.651)
0.125
3.175
MIN
0.014 – 0.026
(0.360 – 0.660)
0.100
(2.54)
BSC
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE
OR TIN PLATE LEADS
OBSOLETE PACKAGES
1050fb
14
LTC1050
U
PACKAGE DESCRIPTIO
N8 Package
8-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
0.400*
(10.160)
MAX
0.130 ± 0.005
(3.302 ± 0.127)
0.300 – 0.325
(7.620 – 8.255)
0.045 – 0.065
(1.143 – 1.651)
8
1
7
6
5
4
0.065
(1.651)
TYP
0.255 ± 0.015*
(6.477 ± 0.381)
0.009 – 0.015
(0.229 – 0.381)
0.125
0.020
(0.508)
MIN
(3.175)
MIN
+0.035
–0.015
2
3
0.325
0.018 ± 0.003
0.100
(2.54)
BSC
N8 1098
+0.889
8.255
(0.457 ± 0.076)
(
)
–0.381
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
N Package
14-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
0.770*
(19.558)
MAX
0.300 – 0.325
(7.620 – 8.255)
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
14
13
12
11
10
9
8
7
0.020
(0.508)
MIN
0.255 ± 0.015*
(6.477 ± 0.381)
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
+0.035
1
2
3
5
6
4
0.325
0.005
(0.125)
MIN
–0.015
0.125
(3.175)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
N14 1098
+0.889
8.255
0.100
(2.54)
BSC
(
)
–0.381
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
0.189 – 0.197*
(4.801 – 5.004)
0.010 – 0.020
(0.254 – 0.508)
7
5
8
6
× 45°
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
0.008 – 0.010
(0.203 – 0.254)
0°– 8° TYP
0.150 – 0.157**
(3.810 – 3.988)
0.228 – 0.244
(5.791 – 6.197)
0.016 – 0.050
(0.406 – 1.270)
0.050
(1.270)
BSC
0.014 – 0.019
(0.355 – 0.483)
TYP
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
SO8 1298
1
3
4
2
1050fb
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
15
LTC1050
U
O
TYPICAL APPLICATI S
DC Accurate 10th Order Max Flat Lowpass Filter
5V
C
2
3
7
–
R
6
V
OUT
LTC1050
(DC ACCURATE)
0.12R
R
V
+
IN
4
C
1
2
3
4
C
1
2
3
4
–5V
8
7
6
5
8
7
6
5
LTC1062
LTC1062
–5V
0.1µF
5V
–5V
5V
0.1µF
f
CLK
1050 TA19
f
CLK
• f
= 0.9
0.2244
CUTOFF
(
)
100
• RC =
f
CUTOFF
• 60dB/OCT. SLOPE
• PASSBAND ERROR <0.1dB FOR 0 ≤ f ≤ 0.67f
CUTOFF
RMS
• THD = 0.04%, WIDEBAND NOISE = 120µV
• f ≅ 100kHz
CLK
DC Accurate, Noninverting 2nd Order Lowpass Filter
Gain of 1, 10Hz 3rd Order Bessel DC Accurate Lowpass Filter
R4
5V
5V
7
R3
2
2
7
–
–
6
6
R3
5.9k
R1
R2
LTC1050
V
LTC1050
OUT
R1
47.5k
24.3k
R2
3
3
+
V
+
IN
4
4
C3
2µF
C1
0.47µF
C2
0.22µF
–5V
–5V
C1
C2
1050 TA21
1050 TA20
Q = 0.707, f = 20Hz. FOR f = 10Hz, THE RESISTOR (R1, R2) VALUES SHOULD BE DOUBLED
C
C
COMPONENT VALUES
DC GAIN
R3
∞
R4
0
R1
R2
C1
C2
1
32.4k 18.7k 0.47µF 0.22µF
11.8k 24.3k 0.47µF 0.47µF
2
10k
10k
4
10.5k 31.6k 18.7k 34.8k 0.22µF 0.47µF
10.2k 51.1k
10.2k 71.5k 11.8k 54.9k 0.22µF 0.47µF
10.1k 90.9k 10.5k 61.9k 0.22µF 0.47µF
6
14k
46.4k 0.22µF 0.47µF
8
10
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1051
Dual Zero-Drift Op Amp’s
Zero-Drift Op Amp
Dual Version of the LTC1050
SOT-23 Package
LTC2050
LTC2051
Zero-Drift Op Amp’s
Zero-Drift Instrumentation Amp
Dual Version of the LTC2050 in an MS8 Package
110dB CMRR, MS8 Package, Gain Programmable
LTC2053
1050fb
LW/TP 0802 1K • PRINTED IN USA
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
■
■
LINEAR TECHNOLOGY CORPORATION 1991
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
相关型号：
LTC1051
Dual/Quad Precision Chopper Stabilized Operational Amplifiers with Internal Capacitors
Linear
LTC1051AC
Dual/Quad Precision Chopper Stabilized Operational Amplifiers with Internal Capacitors
Linear
LTC1051ACJ8
Dual/Quad Precision Chopper Stabilized Operational Amplifiers with Internal Capacitors
Linear
LTC1051ACN8
Dual/Quad Precision Chopper Stabilized Operational Amplifiers with Internal Capacitors
Linear
LTC1051ACS
Dual/Quad Precision Chopper Stabilized Operational Amplifiers with Internal Capacitors
Linear
LTC1051AM
Dual/Quad Precision Chopper Stabilized Operational Amplifiers with Internal Capacitors
Linear
LTC1051AMJ8
Dual/Quad Precision Chopper Stabilized Operational Amplifiers with Internal Capacitors
Linear
LTC1051CJ8
Dual/Quad Precision Chopper Stabilized Operational Amplifiers with Internal Capacitors
Linear
LTC1051CN8
Dual/Quad Precision Chopper Stabilized Operational Amplifiers with Internal Capacitors
Linear
LTC1051CN8#PBF
LTC1051 - Dual/Quad Precision Zero-Drift Operational Amplifiers With Internal Capacitors; Package: PDIP; Pins: 8; Temperature Range: 0°C to 70°C
Linear
©2020 ICPDF网 联系我们和版权申明