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Analog Devices Semiconductor Electronic Components Datasheet

LT6370 Datasheet

Low Noise Instrumentation Amplifier

No Preview Available !

FEATURES
nn Single Gain Set Resistor: G = 1 to >1000
nn Excellent DC Precision
nn Input Offset Voltage: 25μV Max
nn Input Offset Voltage Drift: 0.3μV/°C Max
nn Low Gain Error: 0.01% Max (G = 1)
nn Low Gain Drift: 30ppm/°C Max (G > 1)
nn High DC CMRR: 94dB Min (G = 1)
nn Input Bias Current: 400pA Max
nn 3.1MHz –3dB Bandwidth (G = 1)
nn Low Noise:
nn 0.1Hz to 10Hz Noise: 0.2μVP-P
nn 1kHz Voltage Noise: 7nV/√Hz
nn Integrated Input RFI Filter
nn Wide Supply Range 4.75V to 35V
nn Specified Temperature Ranges:
–40°C to 85°C, –40°C to 125°C
nn MS8, S8E and 10-pin 3mm × 3mm DFN Packages
APPLICATIONS
nn Bridge Amplifier
nn Data Acquisition
nn Multiplexed Signals
nn Thermocouple Amplifier
nn Strain Gauge Amplifier
nn Medical Instrumentation
nn Transducer Interfaces
nn Differential to Single-Ended Conversion
LT6370
25µV, 0.3µV/°C, Low Noise
Instrumentation Amplifier
DESCRIPTION
The LT®6370 is a gain programmable, high precision
instrumentation amplifier that delivers industry leading
DC precision. This high precision enables smaller signals
to be sensed and eases calibration requirements, particu-
larly over temperature.
The LT6370 uses a proprietary high performance bipolar
process which enables industry leading accuracy coupled
with exceptional long-term stability. The LT6370 is laser
trimmed for very low input offset voltage (25µV) and high
CMRR (94dB, G = 1). Proprietary on-chip test capability
allows the input offset voltage drift (0.3µV/°C) and gain
drift (30ppm/°C) to be guaranteed with automated testing
on the S8E package.
In addition to excellent DC specifications, the LT6370’s
wide bandwidth (3.1MHz, G = 1) and fast settling time
allow it to operate well in multiplexed applications. EMI
filtering is integrated on the LT6370’s inputs to maintain
accuracy in the presence of harsh RF interference.
The LT6370 is available in a compact 8-pin MSOP or S8E
which use the conventional instrumentation amplifier
pin-out as well as a 10-pin 3mm × 3mm DFN. The S8E
package is also offered as an A grade which has superior
DC specifications. The LT6370 is fully specified over the
–40°C to 85°C and –40°C to 125°C temperature ranges.
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
10V
350Ω
350Ω
350Ω
350Ω
RG
243Ω
+
LT6370A
REF
6370 TA01a
PRECISION BRIDGE TRANSDUCER
LT6370A MONOLITHIC
INSTRUMENTATION AMPLIFIER
G = 100, RG = ±0.1%, ±10ppm TC
Distribution of Input Offset
Voltage Drift, MS8 Package
50
45
TA = –40°C TO 85°C
117 UNITS
40
35
30
25
20
15
10
5
0
–0.5 –0.4 –0.3 –0.2 –0.1 0 0.1 0.2 0.3 0.4 0.5
INPUT OFFSET VOLTAGE DRIFT (µV/°C)
6370 TA01b
Document Feedback
For more information www.analog.com
Rev. 0
1


Analog Devices Semiconductor Electronic Components Datasheet

LT6370 Datasheet

Low Noise Instrumentation Amplifier

No Preview Available !

LT6370
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V+ to V)..................................36V
Input Voltage (+IN, –IN,
+RG, –RG, REF)................... (V– 0.3V) to (V+ + 0.3V)
Differential Input Voltage (+IN to –IN)......................±36V
Input Current (+RG, –RG)........................................±2mA
Input Current (+IN, –IN) ....................................... ±10mA
Input Current (REF) ..............................................–10mA
Output Short-Circuit Duration..............Thermally Limited
Output Current........................................................80mA
Operating and Specified Temperature Range
I-Grade.................................................–40°C to 85°C
H-Grade.............................................. –40°C to 125°C
Maximum Junction Temperature........................... 150°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 300°C
PIN CONFIGURATION
TOP VIEW
–RG 1
–IN 2
+VIN–
3
4
+
8
7
+VR+G
6 OUTPUT
5 REF
MS8 PACKAGE
8-LEAD MS
θJA = 163°C/W, θJC = 40°C/W
TOP VIEW
–RG 1
NC 2
–IN 3
+IN 4
V– 5
10 +RG
9 NC
11 8 V+
7 OUTPUT
6 REF
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
EXPOSED
θJA = 43°C/W,
PAD (PIN 11) IS
θJC = 5.5°C/W
CONNECTED TO
V
(PIN
5)
(PCB CONNECTION OPTIONAL)
TOP VIEW
–RG 1
8 +RG
–IN 2
7 V+
9
+IN 3
6 OUTPUT
V– 4
5 REF
S8E PACKAGE
8-LEAD PLASTIC SOIC
θJA = 33°C/W, θJC = 5°C/W
OR
BEECXOPNONSEECDTPEADDTO(PVIN+
9) MUST FLOAT
IN ADDITION TO
PIN
7
ORDER INFORMATION
TUBE
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT6370IS8E#PBF
LT6370IS8E#TRPBF
6370
8-Lead Plastic SO
–40°C to 85°C
LT6370HS8E#PBF
LT6370HS8E#TRPBF
6370
8-Lead Plastic SO
–40°C to 125°C
LT6370IMS8#PBF
LT6370IMS8#TRPBF
LTGZP
8-Lead Plastic MSOP
–40°C to 85°C
LT6370HMS8#PBF
LT6370HMS8#TRPBF LTGZP
8-Lead Plastic MSOP
–40°C to 125°C
LT6370IDD#PBF
LT6370IDD#TRPBF
LGZN
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
LT6370HDD#PBF
LT6370HDD#TRPBF
LGZN
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LT6370AIS8E#PBF
LT6370AIS8E#TRPBF 6370
8-Lead Plastic SO
–40°C to 85°C
LT6370AHS8E#PBF
LT6370AHS8E#TRPBF 6370
8-Lead Plastic SO
–40°C to 125°C
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
Rev. 0
2 For more information www.analog.com


Part Number LT6370
Description Low Noise Instrumentation Amplifier
Maker Analog Devices
Total Page 28 Pages
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