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LT1679

Description
Dual/Quad Low Noise, Rail-to-Rail, Precision Op Amps
File Size298KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LT1679 Overview

Dual/Quad Low Noise, Rail-to-Rail, Precision Op Amps

LT1678/LT1679
Dual/Quad Low Noise,
Rail-to-Rail, Precision Op Amps
FEATURES
DESCRIPTIO
Rail-to-Rail Input and Output
100% Tested Low Voltage Noise:
3.9nV/√Hz Typ at 1kHz
5.5nV/√Hz Max at 1kHz
Single Supply Operation from 2.7V to 36V
Offset Voltage: 100µV Max
Low Input Bias Current: 20nA Max
High A
VOL
: 3V/µV Min, R
L
= 10k
High CMRR: 100dB Min
High PSRR: 106dB Min
Gain Bandwidth Product: 20MHz
Operating Temperature Range: – 40°C to 85°C
Matching Specifications
No Phase Inversion
8-Lead SO and 14-Lead SO Packages
The LT
®
1678/LT1679 are dual/quad rail-to-rail op amps
offering both low noise and precision: 3.9nV/√Hz wideband
noise, 1/f corner frequency of 4Hz and 90nV peak-to-peak
0.1Hz to 10Hz noise are combined with outstanding
precision: 100µV maximum offset voltage, greater than
100dB common mode and power supply rejection and
20MHz gain bandwidth product. The LT1678/LT1679 bring
precision as well as low noise to single supply applications as
low as 3V. The input range exceeds the power supply by
100mV with no phase inversion while the output can swing
to within 170mV of either rail.
The LT1678/LT1679 are offered in the SO-8 and SO-14
packages. A full set of matching specifications are also
provided, facilitating their use in matching dependent appli-
cations such as a two op amp instrumentation amplifier
design. The LT1678/LT1679 are specified for supply volt-
ages of
±15V,
single 5V as well as single 3V. For a single
amplifier with similiar performance, see the LT1677 data
sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
Strain Gauge Amplifiers
Portable Microphones
Battery-Powered Rail-to-Rail Instrumentation
Low Noise Signal Processing
Microvolt Accuracy Threshold Detection
Infrared Detectors
TYPICAL APPLICATIO
3
Instrumentation Amplifier with Shield Driver
+
1/4
LT1679
1
1k
R
F
3.4k
5
30k
2
GUARD
INPUT
+
GUARD
+
8
1/4
LT1679
10
R
G
100Ω
6
R
G
100Ω
+
4
1/4
LT1679
11
–15V
7
OUTPUT
30k
9
GAIN = 1000
13
VOLTAGE NOISE (50nV/DIV)
15V
1/4
LT1679
14
R
F
3.4k
16789 TA01
12
+
1k
U
0.1Hz to 10Hz Voltage Noise
V
S
=
±2.5V
0
2
4
6
TIME (sec)
8
10
16789 TA01b
U
U
sn16789 16789fs
1

LT1679 Related Products

LT1679 LT1678CS8 LT1678IS8 LT1679IS LT1679CS
Description Dual/Quad Low Noise, Rail-to-Rail, Precision Op Amps Dual/Quad Low Noise, Rail-to-Rail, Precision Op Amps Dual/Quad Low Noise, Rail-to-Rail, Precision Op Amps Dual/Quad Low Noise, Rail-to-Rail, Precision Op Amps Dual/Quad Low Noise, Rail-to-Rail, Precision Op Amps
Brand Name - Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? - incompatible incompatible incompatible incompatible
Parts packaging code - SOIC SOIC SOIC SOIC
package instruction - SOP, SOP8,.25 0.150 INCH, PLASTIC, SOP-8 SOP, SOP14,.25 SOP, SOP14,.25
Contacts - 8 8 14 14
Manufacturer packaging code - S8 S8 S S
Reach Compliance Code - _compli _compli _compli _compli
ECCN code - EAR99 EAR99 EAR99 EAR99
Amplifier type - OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER
Architecture - VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK
Maximum average bias current (IIB) - 0.035 µA 0.05 µA 0.05 µA 0.035 µA
Maximum bias current (IIB) at 25C - 0.02 µA 0.02 µA 0.4 µA 0.4 µA
Nominal Common Mode Rejection Ratio - 124 dB 124 dB 124 dB 124 dB
frequency compensation - YES YES YES YES
Maximum input offset voltage - 350 µV 420 µV 420 µV 350 µV
JESD-30 code - R-PDSO-G8 R-PDSO-G8 R-PDSO-G14 R-PDSO-G14
JESD-609 code - e0 e0 e0 e0
length - 4.9025 mm 4.9025 mm 8.649 mm 8.649 mm
low-bias - NO NO NO NO
low-dissonance - NO NO NO NO
micropower - NO NO NO NO
Humidity sensitivity level - 1 1 1 1
Negative supply voltage upper limit - -18 V -18 V -18 V -18 V
Nominal Negative Supply Voltage (Vsup) - -15 V -15 V -15 V -15 V
Number of functions - 2 2 4 4
Number of terminals - 8 8 14 14
Maximum operating temperature - 70 °C 85 °C 85 °C 70 °C
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - SOP SOP SOP SOP
Encapsulate equivalent code - SOP8,.25 SOP8,.25 SOP14,.25 SOP14,.25
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form - SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) - 235 235 235 235
power - NO NO NO NO
power supply - 3/5/+-15 V 3/5/+-15 V +-1.35/+-18/2.7/36 V +-1.35/+-18/2.7/36 V
Programmable power - NO NO NO NO
Certification status - Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height - 1.752 mm 1.752 mm 1.752 mm 1.752 mm
minimum slew rate - 3.5 V/us 3 V/us 3 V/us 3.5 V/us
Nominal slew rate - 5.8 V/us 5.5 V/us 5.5 V/us 5.8 V/us
Maximum slew rate - 9 mA 9 mA 18 mA 18 mA
Supply voltage upper limit - 18 V 18 V 18 V 18 V
Nominal supply voltage (Vsup) - 15 V 15 V 15 V 15 V
surface mount - YES YES YES YES
technology - BIPOLAR BIPOLAR BIPOLAR BIPOLAR
Temperature level - COMMERCIAL INDUSTRIAL INDUSTRIAL COMMERCIAL
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form - GULL WING GULL WING GULL WING GULL WING
Terminal pitch - 1.27 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location - DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature - 20 20 20 20
Nominal Uniform Gain Bandwidth - 19000 kHz 19000 kHz 19000 kHz 19000 kHz
Minimum voltage gain - 150000 100000 400000 400000
broadband - NO NO NO NO
width - 3.899 mm 3.899 mm 3.899 mm 3.899 mm
Base Number Matches - 1 1 1 1
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