LT1168CS8#PBF Linear Technology, LT1168CS8#PBF Datasheet

IC AMP INSTR PREC PROG 8-SOIC

LT1168CS8#PBF

Manufacturer Part Number
LT1168CS8#PBF
Description
IC AMP INSTR PREC PROG 8-SOIC
Manufacturer
Linear Technology
Type
Instrumentation Ampr
Datasheets

Specifications of LT1168CS8#PBF

Amplifier Type
Instrumentation
Number Of Circuits
1
Slew Rate
0.5 V/µs
Gain Bandwidth Product
400kHz
Current - Input Bias
80pA
Voltage - Input Offset
20µV
Current - Supply
350µA
Current - Output / Channel
32mA
Voltage - Supply, Single/dual (±)
4.6 V ~ 36 V, ±2.3 V ~ 18 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Number Of Channels
1
Number Of Elements
1
Power Supply Requirement
Dual
Common Mode Rejection Ratio
85dB
Input Resistance
1250000@±15VMohm
Input Offset Voltage
0.06@±15VmV
Input Bias Current
0.0005@±15VnA
Single Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (typ)
15V
Power Supply Rejection Ratio
100dB
Rail/rail I/o Type
No
Single Supply Voltage (min)
Not RequiredV
Single Supply Voltage (max)
Not RequiredV
Dual Supply Voltage (min)
±2.3V
Dual Supply Voltage (max)
±18V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
8
Package Type
SOIC N
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Type
-
-3db Bandwidth
-
Lead Free Status / Rohs Status
Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LT1168CS8#PBFLT1168CS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LT1168CS8#PBF
Manufacturer:
LT
Quantity:
944
Company:
Part Number:
LT1168CS8#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LT1168CS8#PBFLT1168CS8#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
*See Theory of Operation section
3.5k
3.5k
Supply Current: 530µA Max
Meets IEC 1000-4-2 Level 4 (±15kV) ESD Tests
with Two External 5k Resistors
Single Gain Set Resistor: G = 1 to 10,000
Gain Error: G = 10, 0.4% Max
Input Offset Voltage Drift: 0.3µV/°C Max
Gain Nonlinearity: G = 10, 20ppm Max
Input Offset Voltage: 40µV Max
Input Bias Current: 250pA Max
PSRR at A
CMRR at A
Wide Supply Range: ±2.3V to ±18V
1kHz Voltage Noise: 10nV/√Hz
0.1Hz to 10Hz Noise: 0.28µV
Available in 8-Pin PDIP and SO Packages
Bridge Amplifiers
Strain Gauge Amplifiers
Thermocouple Amplifiers
Differential to Single-Ended Converters
Differential Voltage to Current Converters
Data Acquisition
Battery-Powered and Portable Equipment
Medical Instrumentation
Scales
5V
3.5k
3.5k
1
G = 200
V
249Ω
V
R1
=1: 103dB Min
= 1: 90dB Min
U
3
8
1
2
+
Single Supply* Pressure Monitor
LT1168
4
67-8-3 R40KQ, (0.02% RATIO MATCH)
7
5
P-P
U
BI TECHNOLOGIES
6
40k
20k
40k
3
2
Precision Instrumentation Amplifier
+
LT1112
1/2
1
Resistor Gain Programmable,
REF
IN
AGND
LTC
ADC
®
DESCRIPTIO
The LT
plifier that requires only one external resistor to set gains of
1 to 10,000. The low voltage noise of 10nV/√Hz (at 1kHz) is
not compromised by low power dissipation (350µA typical for
±15V supplies). The wide supply range of ±2.3V to ±18V allows
the LT1168 to fit into a wide variety of industrial as well as
battery-powered applications.
The high accuracy of the LT1168 is due to a 20ppm maximum
nonlinearity and 0.4% max gain error (G = 10). Previous mono-
lithic instrumentation amps cannot handle a 2k load resistor
whereas the nonlinearity of the LT1168 is specified for loads
as low as 2k. The LT1168 is laser trimmed for very low input
offset voltage (40µV max), drift (0.3µV/°C), high CMRR (90dB,
G = 1) and PSRR (103dB, G = 1). Low input bias currents of
250pA max are achieved with the use of superbeta process-
ing. The output can handle capacitive loads up to 1000pF in
any gain configuration while the inputs are ESD protected up
to 13kV (human body). The LT1168 with two external 5k
resistors passes the IEC 1000-4-2 level 4 specification.
The LT1168 is a pin-for-pin improved second source for the
AD620 and INA118. The LT1168, offered in 8-pin PDIP and
SO packages, requires significantly less PC board area than
discrete op amp resistor designs. These advantages make
the LT1168 the most cost effective solution for precision
instrumentation amplifier applications.
All other trademarks are the property of their respective owners.
1286
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
OUTPUT
DIGITAL
DATA
1168 TA01
®
1168 is a micropower, precision instrumentation am-
Low Power, Single
U
G = 1000
R
V
OUT
L
= 2k
= ±10V
Gain Nonlinearity
OUTPUT VOLTAGE (2V/DIV)
LT1168
1168 TA01a
1168fa
1

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LT1168CS8#PBF Summary of contents

Page 1

... SO packages, requires significantly less PC board area than discrete op amp resistor designs. These advantages make the LT1168 the most cost effective solution for precision instrumentation amplifier applications. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 40k REF ...

Page 2

LT1168 ABSOLUTE AXI U RATI GS (Note 1) Supply Voltage ...................................................... ±20V Differential Input Voltage (Within the Supply Voltage) ..................................................... ±40V Input Voltage (Equal to Supply Voltage) ................ ±20V Input Current (Note 2) ....................................... ±20mA Output Short-Circuit ...

Page 3

ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER C Differential Input Capacitance IN(DIFF) C Common Mode Input IN(CM) Capacitance V Input Voltage Range CM CMRR Common Mode Rejection Ratio PSRR Power Supply Rejection Ratio I Supply Current S V Output Voltage Swing OUT I ...

Page 4

LT1168 ELECTRICAL CHARACTERISTICS = ±15V, V temperature range 0V SYMBOL PARAMETER CONDITIONS (Note 6) V Total Input Referred Offset Voltage OST V Input Offset Voltage V OSI V Input Offset Voltage Hysteresis (Notes 7, 10) ...

Page 5

ELECTRICAL CHARACTERISTICS = ±15V, V temperature range 0V SYMBOL PARAMETER V Total Input Referred Offset Voltage OST V Input Offset Voltage OSI V Input Offset Voltage Hysteresis OSIH V Output Offset Voltage OSO V Output ...

Page 6

LT1168 W U TYPICAL PERFOR A CE CHARACTERISTICS Distribution of Output Offset Voltage 60 = ±15V V 299 N8 (2 LOTS 25°C 337 S0-8 (2 LOTS 636 TOTAL PARTS 45 40 ...

Page 7

W U TYPICAL PERFOR A CE CHARACTERISTICS 0.1Hz to 10Hz Noise Voltage ±15V 25° TIME (SEC) 1168 G10 0.1Hz to ...

Page 8

LT1168 W U TYPICAL PERFOR A CE CHARACTERISTICS Change in Input Bias Current for V = 20V ±15V V 302 N8 (2 LOTS ±10V 18 V 313 SO-8 (2 LOTS 25°C 615 ...

Page 9

W U TYPICAL PERFOR A CE CHARACTERISTICS Output Voltage Swing vs Load Current + ± 15V – 0 – 1 – 1 – 2.0 ...

Page 10

LT1168 W U TYPICAL PERFOR A CE CHARACTERISTICS Small-Signal Transient Response 1168 G34 10µs/DIV ±15V 60pF L Large-Signal Transient Response 1168 G37 G = 1000 200µs/DIV = ±15V ...

Page 11

W BLOCK DIAGRA + 400Ω –IN 2 – 400Ω +IN 3 –V S THEORY OF OPERATIO The LT1168 is a modified version of the three op amp instrumentation ...

Page 12

LT1168 THEORY OF OPERATIO voltage (R1 + R2)/ the unity-gain difference G amplifier A3. The common mode voltage is removed by A3, resulting in a single-ended output voltage referenced to the voltage on the REF pin. ...

Page 13

THEORY OF OPERATIO + AREA OF OPERATION –1 –2 – 100 –4 AREA OF OPERATION –5 – 25°C A INPUT COMMON –7 MODE RANGE IS BELOW THE CURVE – ...

Page 14

LT1168 THEORY OF OPERATIO path. The first example purely differential signal source with a 10kΩ input current path to ground. Since the impedance of the signal source is low, only one resistor is needed. Two matching resistors ...

Page 15

U U APPLICATIO S I FOR ATIO voltages or high levels of noise. Typically, the sources of these very small signals (on the order of microvolts or millivolts) are sensors that can be a significant distance from the signal conditioning ...

Page 16

LT1168 U U APPLICATIO S I FOR ATIO a ground for the common mode signal. C1 was chosen to maintain the stability of the patient ground. The LT1168’s high CMRR ensures that the desired differential signal is amplified and unwanted ...

Page 17

U TYPICAL APPLICATIO S R5 200k LT1490 2 LT1634CCZ-1.25 – 50k R3 50k R8 100k –IN +IN Single Supply Barometer V S LUCAS NOVA SENOR NPC-1220-015-A- – ...

Page 18

LT1168 U TYPICAL APPLICATIO 392k 1/4 2 LT1114 LT1634CCZ-1.25 2 – 0.6% ACCURACY AT ROOM TEMP 1.7% ACCURACY AT 0°C TO 60°C VOLTS INCHES Hg 2.800 28.00 3.000 30.00 3.200 32.00 18 ...

Page 19

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 20

... LT1462 6 – 1168 TA05 COMMENTS Switched Capacitor, Rail-to-Rail Input, 120dB CMRR 100 10µ 50pA 100 105µ 100, Slew Rate = 30V/µs Lower Noise than LT1168 7.5nV/√Hz N LT/LWI 0906 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2000 1168fa ...

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