LTC1250CS8#TR Linear Technology, LTC1250CS8#TR Datasheet

IC AMP BRIDGE ZERO DRFT LN 8SOIC

LTC1250CS8#TR

Manufacturer Part Number
LTC1250CS8#TR
Description
IC AMP BRIDGE ZERO DRFT LN 8SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1250CS8#TR

Amplifier Type
Chopper (Zero-Drift)
Number Of Circuits
1
Output Type
Rail-to-Rail
Slew Rate
10 V/µs
Gain Bandwidth Product
1.5MHz
Current - Input Bias
50pA
Voltage - Input Offset
5µV
Current - Supply
3mA
Voltage - Supply, Single/dual (±)
4.75 V ~ 16 V, ±2.38 V ~ 8 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Output / Channel
-
-3db Bandwidth
-

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Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
LTC1250CS8#TRLTC1250CS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC1250CS8#TRLTC1250CS8#PBF
Manufacturer:
LT
Quantity:
526
Company:
Part Number:
LTC1250CS8#TRLTC1250CS8#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
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Manufacturer:
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Quantity:
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APPLICATIO S
FEATURES
trademarks are the property of their respective owners. Protected by U.S. Patents
including 4933642.
TYPICAL APPLICATIO
, LTC and LT are registered trademarks of Linear Technology Corporation. All other
Very Low Noise: 0.75µV
DC to 1Hz Noise Lower Than OP-07
Full Output Swing into 1k Load
Offset Voltage: 10µV Max
Offset Voltage Drift: 50nV/°C Max
Common Mode Rejection Ratio: 110dB Min
Power Supply Rejection Ratio: 115dB Min
No External Components Required
Pin Compatible with Standard 8-Pin Op Amps
Available in Standard 8-Pin Plastic DIP
and 8-Pin SO Packages
Electronic Scales
Strain Gauge Amplifiers
Thermocouple Amplifiers
High Resolution Data Acquisition
Low Noise Transducers
Instrumentation Amplifiers
STRAIN
GAUGE
350Ω
U
–5V
5V
Differential Bridge Amplifier
50Ω
GAIN
TRIM
P-P
Typ, 0.1Hz to 10Hz
1000pF
U
0.1µF
18.2k
2
3
+
LTC1250
–5V
5V
7
4
1000pF
18.2k
6
A
V
1250 TA01
= 100
DESCRIPTIO
The LTC
drift operational amplifier. The LTC1250’s combination of
low front-end noise and DC precision makes it ideal for use
with low impedance bridge transducers. The LTC1250
features typical input noise of 0.75µV
10Hz, and 0.2µV
DC to 1Hz noise of 0.35µV
bipolar parts including the OP-07, OP-77, and LT1012.
The LTC1250 uses the industry-standard single op amp
pinout, and requires no external components or nulling
signals, allowing it to be a plug-in replacement for bipolar
op amps.
The LTC1250 incorporates an improved output stage
capable of driving 4.3V into a 1k load with a single 5V
supply; it will swing ±4.9V into 5k with ±5V supplies. The
input common mode range includes ground with single
power supply voltages above 12V. Supply current is 3mA
with a ±5V supply, and overload recovery times from
positive and negative saturation are 0.5ms and 1.5ms,
respectively. The internal nulling clock is set at 5kHz for
optimum low frequency noise and offset drift; no external
connections are necessary.
The LTC1250 is available in a standard 8-pin plastic DIP
and 8-pin SO packages.
Zero-Drift Bridge Amplifier
®
1250 is a high performance, very low noise zero-
P-P
–2
–1
Input Referred Noise 0.1Hz to 10Hz
2
1
0
U
from 0.1Hz to 1Hz. The LTC1250 has
0
V
A
S
V
= ±5V
= 10k
Very Low Noise
P-P
2
, surpassing that of low noise
4
TIME (s)
6
P-P
LTC1250
from 0.1Hz to
8
LT1250 TA02
10
1250fb
1

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LTC1250CS8#TR Summary of contents

Page 1

... Thermocouple Amplifiers ■ High Resolution Data Acquisition ■ Low Noise Transducers ■ Instrumentation Amplifiers , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 4933642. U TYPICAL APPLICATIO Differential Bridge Amplifier 5V 50Ω ...

Page 2

LTC1250 ABSOLUTE AXI U RATI GS + – Total Supply Voltage ( ............................. 18V + Input Voltage ........................ (V + 0.3V Output Short Circuit Duration ......................... Indefinite Storage Temperature Range ................ – ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range ±5V, otherwise specifications are SYMBOL PARAMETER f Internal Sampling Frequency S V Input Offset Voltage OS Average Input Offset Drift ∆ Input Noise Voltage (Note Input ...

Page 4

LTC1250 W U TYPICAL PERFOR A Input Noise vs Temperature 1 ±5V S 1.0 0.8 0.1Hz TO 10Hz 0.6 0.4 0.1Hz TO 1Hz 0.2 0 –50 – 100 125 TEMPERATURE (°C) 1250 G04 Voltage ...

Page 5

W U TYPICAL PERFOR A Transient Response 1µs/DIV 100k 50pF ± Output Swing vs Output Current, ±5V Supply ± ...

Page 6

LTC1250 PPLICATI S I FOR ATIO A Input Noise The LTC1250, like all CMOS amplifiers, exhibits two types of low frequency noise: thermal noise and 1/f noise. The LTC1250 uses several design modifications to minimize these noise ...

Page 7

PPLICATI S I FOR ATIO LTC1250 and on the PC board, play an increasing role. Low value resistors (below 5k) may not require a capaci- tor at all. Input Bias Current The inputs of the LTC1250, ...

Page 8

LTC1250 PPLICATI S I FOR ATIO Single Supply Operation The LTC1250 will operate with single supply voltages as low as 4.5V, and the output swings to within millivolts of either supply when lightly loaded. The input ...

Page 9

PACKAGE DESCRIPTIO CORNER LEADS OPTION (4 PLCS) 0.045 – 0.068 (1.143 – 1.727) FULL LEAD OPTION 0.300 BSC (0.762 BSC) 0.008 – 0.018 (0.203 – 0.457) 0.385 ± 0.025 (9.779 ± 0.635) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR ...

Page 10

LTC1250 PACKAGE DESCRIPTIO .300 – .325 (7.620 – 8.255) .008 – .015 (0.203 – 0.381) +.035 .325 –.015 ( ) +0.889 8.255 –0.381 NOTE: 1. DIMENSIONS ARE MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR ...

Page 11

... 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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 12

... FULL-SCALE TRIM 10mV/°C V OUT † R9 FOR BEST ACCURACY, THERMOCOUPLE 33k RESISTANCE SHOULD BE LESS THAN 100Ω –5V Max = 16.5V SUPPLY LT/GP 0205 1K REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1994 V OUT 100mV/°C 1250 TA04 1250fb ...

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