LT6013/LT6014
Single/Dual 145µA,
FEATURES
■
35µV Maximum Offset Voltage (LT6013A)
■
Low 1/f Noise: 200nV
40nV
■
Low White Noise: 9.5nV/√Hz (1kHz)
■
Rail-to-Rail Output Swing
■
145µA Supply Current per Amplifier
■
250pA Maximum Input Bias Current (LT6013A)
■
AV ≥5 Stable; Up to 500pF C
■
0.2V/µs Slew Rate
■
1.4MHz Gain Bandwidth Product
■
120dB Minimum Voltage Gain, VS = ±15V
■
0.8µV/°C Maximum VOS Drift
■
2.7V to ±18V Supply Voltage Operation
■
Operating Temperature Range: –40°C to 85°C
■
Available in SO-8 and Space Saving 3mm × 3mm
(0.1Hz to 10Hz)
P-P
(0.1Hz to 10Hz)
RMS
LOAD
DFN Packages
U
APPLICATIO S
9.5nV/√Hz, A
≥5, Rail-to-Rail
V
Output Precision Op Amps
U
DESCRIPTIO
The LT®6013 and LT6014 op amps combine low noise and
high precision input performance with low power consumption and rail-to-rail output swing. The amplifiers are
stable in a gain of 5 or more and feature greatly improved
CMRR and PSRR versus frequency compared to other
precision op amps.
Input offset voltage is factory-trimmed to less than 35µV.
The low drift and excellent long-term stability ensure a
high accuracy over temperature and time. The 250pA
maximum input bias current and 120dB minimum voltage
gain further maintain this precision over operating
conditions.
The LT6013 and LT6014 operate from any supply voltage
from 2.7V to 36V and draw only 145µA of supply current
per amplifier on a 5V supply. The output swings to within
40mV of either supply rail, making the amplifiers very
useful for low voltage single supply operation.
■
Thermocouple Amplifiers
■
Precision Photodiode Amplifiers
■
Instrumentation Amplifiers
■
Battery-Powered Precision Systems
■
Low-Voltage Precision Systems
■
Micro-Power Sensor Interface
TYPICAL APPLICATIO
Gain of 10 Single Ended to Differential Converter
+
V
V
IN
+
1/2 LT6014
–
8.06k2k
10k
2k
–
1/2 LT6014
+
–
V
U
5 • V
–5 • V
60134 TA01a
The amplifiers are fully specified at 5V and ±15V supplies
and from –40°C to 85°C. The single LT6013 and dual
LT6014 are both available in SO-8 and space saving
3mm × 3mm DFN packages. For unity gain stable versions, refer to the LT6010 and LT6011 data sheets.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
LT6013/LT6014 0.1Hz to 10Hz Voltage Noise
VS = 5V, 0V
= 25°C
T
A
EQUIVALENT RMS VOLTAGE = 40nV
IN
INPUT VOLTAGE NOISE (0.1µV/DIV)
IN
0
246 107135 9
TIME (SEC)
RMS
8
60134 TA01b
60134fb
1
LT6013/LT6014
1
2
3
4
8
7
6
5
TOP VIEW
*DNC
V
+
OUT
NC
*DNC
–IN
+IN
V
–
S8 PACKAGE
8-LEAD PLASTIC SO
–
+
TOP VIEW
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1*DNC
–IN
+IN
V
–
*DNC
V
+
OUT
NC
–
+
1
2
3
4
8
7
6
5
TOP VIEW
V
+
OUT B
–IN B
+IN B
OUT A
–IN A
+IN A
V
–
S8 PACKAGE
8-LEAD PLASTIC SO
B
A
WWWU
ABSOLUTE AXI U RATI GS
(Note 1)
Total Supply Voltage (V+ to V–) .............................. 40V
Differential Input Voltage (Note 2) .......................... 10V
Input Voltage .................................................... V+ to V
Input Current (Note 2) ....................................... ±10mA
Output Short-Circuit Duration (Note 3) ........... Indefinite
Operating Temperature Range (Note 4) .. – 40°C to 85°C
Specified Temperature Range (Note 5) ... –40°C to 85°C
UU
W
Maximum Junction Temperature
DD Package ..................................................... 125°C
–
S8 Package...................................................... 150°C
Storage Temperature Range
DD Package ..................................... – 65°C to 125°C
S8 Package...................................... – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
LT6013CDD
LT6013IDD
LT6013ACDD
LT6013AIDD
DD PART MARKING*
T
= 125°C, θJA = 160°C/W
JMAX
UNDERSIDE METAL CONNECTED TO V
(PCB CONNECTION OPTIONAL)
*Do Not Connect *Do Not Connect
–
LBHC
T
= 150°C, θJA = 190°C/W
JMAX
ORDER PART
NUMBER
LT6013CS8
LT6013IS8
LT6013ACS8
LT6013AIS8
S8 PART MARKING
6013
6013I
6013A
6013AI
1OUT A
–IN A
2
+IN A
3
–
V
4
8-LEAD (3mm × 3mm) PLASTIC DFN
T
JMAX
UNDERSIDE METAL CONNECTED TO V
(PCB CONNECTION OPTIONAL)
*Temperature and electrical grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
2
TOP VIEW
8
A
DD PACKAGE
= 125°C, θJA = 160°C/W
7
6
B
5
+
V
OUT B
–IN B
+IN B
ORDER PART
NUMBER
LT6014CDD
LT6014IDD
LT6014ACDD
LT6014AIDD
DD PART MARKING*
LBCB
–
T
= 150°C, θJA = 190°C/W
JMAX
ORDER PART
NUMBER
LT6014CS8
LT6014IS8
LT6014ACS8
LT6014AIS8
S8 PART MARKING
6014
6014I
6014A
6014AI
60134fb
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
The ● denotes the specifications which apply over the full operating
= 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage (Note 8) LT6013AS8 10 35 µV
T
= 0°C to 70°C ● 60 µV
A
= –40°C to 85°C ● 75 µV
T
A
LT6013S8, LT6014AS8 20 60 µV
= 0°C to 70°C ● 85 µV
T
A
T
= –40°C to 85°C ● 110 µV
A
LT6013ADD 20 60 µV
= 0°C to 70°C ● 110 µV
T
A
= –40°C to 85°C ● 150 µV
T
A
LT6014S8 20 75 µV
T
= 0°C to 70°C ● 100 µV
A
= –40°C to 85°C ● 125 µV
T
A
LT6013DD, LT6014ADD 30 85 µV
= 0°C to 70°C ● 135 µV
T
A
= –40°C to 85°C ● 170 µV
T
A
LT6014DD 30 125 µV
T
= 0°C to 70°C ● 175 µV
A
= –40°C to 85°C ● 210 µV
T
A
∆VOS/∆T Input Offset Voltage Drift (Note 6) S8 Packages ● 0.2 0.8 µV/°C
DD Packages
I
OS
Input Offset Current (Note 8) LT6013AS8, LT6013ADD 100 250 pA
T
= 0°C to 70°C ● 500 pA
A
= –40°C to 85°C ● 600 pA
T
A
● 0.2 1.4 µV/°C
LT6014AS8, LT6014ADD 100 500 pA
= 0°C to 70°C ● 600 pA
T
A
T
= –40°C to 85°C ● 700 pA
A
LT6013/LT6014 (Standard grades) 150 800 pA
T
= 0°C to 70°C ● 1000 pA
A
= –40°C to 85°C ● 1200 pA
T
A
I
B
Input Bias Current (Note 8) LT6013AS8, LT6013ADD 100 ±250 pA
= 0°C to 70°C ● ±500 pA
T
A
T
= –40°C to 85°C ● ±600 pA
A
LT6013S8, LT6013DD, LT6014AS8, LT6014ADD 100 ±400 pA
= 0°C to 70°C ● ±600 pA
T
A
= –40°C to 85°C ● ±800 pA
T
A
LT6014S8, LT6014DD 150 ±800 pA
T
= 0°C to 70°C ● ±1000 pA
A
= –40°C to 85°C ● ±1200 pA
T
A
e
n
Input Noise Voltage Density f = 1kHz, LT6013/LT6014 9.5 nV/√Hz
f = 1kHz, LT6013A/LT6014A 9.5 13 nV/√Hz
Input Noise Voltage (Low Frequency) Bandwidth = 0.01Hz to 1Hz 200 nV
50 nV
RMS
Bandwidth = 0.1Hz to 10Hz 200 nV
40 nV
RMS
P-P
P-P
60134fb
3
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
The ● denotes the specifications which apply over the full operating
= 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
i
n
Input Noise Current Density f = 1kHz 0.15 pA/√Hz
Input Noise Current (Low Frequency) Bandwidth = 0.01Hz to 1Hz 7 pA
1.3 pA
RMS
Bandwidth = 0.1Hz to 10Hz 5 pA
0.4 pA
R
IN
Input Resistance Common Mode, VCM = 1V to 3.8V 120 GΩ
RMS
Differential 20 MΩ
C
IN
V
CM
Input Capacitance 4pF
Input Voltage Range (Positive) Guaranteed by CMRR ● 3.8 4 V
Input Voltage Range (Negative) Guaranteed by CMRR
● 0.7 1 V
CMRR Common Mode Rejection Ratio VCM = 1V to 3.8V ● 107 135 dB
Minimum Supply Voltage Guaranteed by PSRR ● 2.4 2.7 V
PSRR Power Supply Rejection Ratio VS = 2.7V to 36V, VCM = 1/2V
A
VOL
V
OUT
Large-Signal Voltage Gain RL = 10k, V
R
= 2k, V
L
Channel Separation V
Maximum Output Swing No Load, 50mV Overdrive 35 55 mV
(Positive, Referred to V
+
) ● 65 mV
= 1V to 4V, LT6014 ● 110 140 dB
OUT
I
SOURCE
= 1V to 4V ● 300 2000 V/mV
OUT
= 1V to 4V ● 250 2000 V/mV
OUT
= 1mA, 50mV Overdrive 120 170 mV
S
● 112 135 dB
● 220 mV
Maximum Output Swing No Load, 50mV Overdrive 40 55 mV
(Negative, Referred to 0V)
I
= 1mA, 50mV Overdrive 150 225 mV
SINK
I
SC
Output Short-Circuit Current (Note 3) V
= 0V, 1V Overdrive, Source 8 14 mA
OUT
V
= 5V, –1V Overdrive, Sink 8 21 mA
OUT
● 65 mV
● 275 mV
● 4mA
● 4mA
SR Slew Rate AV = –10, RF = 50k, RG = 5k 0.15 0.2 V/µs
= 0°C to 70°C ● 0.12 V/µs
T
A
T
= –40°C to 85°C ● 0.1 V/µs
A
GBW Gain Bandwidth Product f = 10kHz 1 1.4 MHz
● 0.9 MHz
t
s
tr, t
f
Settling Time AV = –4, 0.01%, V
= 1.5V to 3.5V 20 µs
OUT
Rise Time, Fall Time AV = 5, 10% to 90%, 0.1V Step 1 µs
P-P
P-P
4
60134fb
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
The ● denotes the specifications which apply over the full operating
= 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
∆V
OS
Offset Voltage Match (Note 7) LT6014AS8 50 120 µV
= 0°C to 70°C ● 170 µV
T
A
= –40°C to 85°C ● 220 µV
T
A
LT6014ADD 50 170 µV
= 0°C to 70°C ● 270 µV
T
A
= –40°C to 85°C ● 340 µV
T
A
LT6014S8 50 150 µV
= 0°C to 70°C ● 200 µV
T
A
= –40°C to 85°C ● 250 µV
T
A
LT6014DD 60 250 µV
= 0°C to 70°C ● 350 µV
T
A
= –40°C to 85°C ● 420 µV
T
A
∆I
B
Input Bias Current Match (Note 7) LT6014AS8, LT6014ADD 200 800 pA
T
= 0°C to 70°C ● 1200 pA
A
= –40°C to 85°C ● 1400 pA
T
A
LT6014S8, LT6014DD 300 1600 pA
T
= 0°C to 70°C ● 2000 pA
A
= –40°C to 85°C ● 2400 pA
T
A
∆CMRR Common Mode Rejection Ratio LT6014 ● 101 135 dB
Match (Note 7)
∆PSRR Power Supply Rejection Ratio LT6014 ● 106 135 dB
Match (Note 7)
I
S
Supply Current per Amplifier 145 165 µA
= 0°C to 70°C ● 210 µA
T
A
= –40°C to 85°C ● 230 µA
T
A
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VS = ±15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage (Note 8) LT6013AS8 20 60 µV
= 0°C to 70°C ● 80 µV
T
A
T
= –40°C to 85°C ● 110 µV
A
LT6013S8 25 85 µV
= 0°C to 70°C ● 110 µV
T
A
T
= –40°C to 85°C ● 135 µV
A
LT6013ADD 25 85 µV
= 0°C to 70°C ● 135 µV
T
A
= –40°C to 85°C ● 170 µV
T
A
LT6013DD, LT6014AS8 30 135 µV
= 0°C to 70°C ● 160 µV
T
A
= –40°C to 85°C ● 185 µV
T
A
LT6014S8 35 150 µV
= 0°C to 70°C ● 175 µV
T
A
= –40°C to 85°C ● 200 µV
T
A
LT6014ADD 35 160 µV
= 0°C to 70°C ● 210 µV
T
A
= –40°C to 85°C ● 225 µV
T
A
LT6014DD 40 200 µV
T
= 0°C to 70°C ● 250 µV
A
= –40°C to 85°C ● 275 µV
T
A
60134fb
5
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
The ● denotes the specifications which apply over the full operating
= 25°C. VS = ±15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5)
A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
∆VOS/∆T Input Offset Voltage Drift (Note 6) S8 Packages ● 0.2 0.8 µV/°C
DD Packages
I
OS
Input Offset Current (Note 8) LT6013AS8, LT6013ADD 100 250 pA
= 0°C to 70°C ● 500 pA
T
A
= –40°C to 85°C ● 600 pA
T
A
● 0.2 1.2 µV/°C
LT6014AS8, LT6014ADD 100 500 pA
T
= 0°C to 70°C ● 600 pA
A
= –40°C to 85°C ● 700 pA
T
A
LT6013/LT6014 (Standard grades) 150 800 pA
= 0°C to 70°C ● 1000 pA
T
A
T
= –40°C to 85°C ● 1200 pA
A
I
B
Input Bias Current (Note 8) LT6013AS8, LT6013ADD 100 ±250 pA
T
= 0°C to 70°C ● ±500 pA
A
= –40°C to 85°C ● ±600 pA
T
A
LT6013S8, LT6013DD, LT6014AS8, LT6014ADD 100 ±400 pA
= 0°C to 70°C ● ±600 pA
T
A
T
= –40°C to 85°C ● ±800 pA
A
LT6014S8, LT6014DD 150 ±800 pA
= 0°C to 70°C ● ±1000 pA
T
A
= –40°C to 85°C ● ±1200 pA
T
A
e
n
Input Noise Voltage Density f = 1kHz, LT6013/LT6014 9.5 nV/√Hz
f = 1kHz, LT6013A/LT6014A 9.5 13 nV/√Hz
Input Noise Voltage (Low Frequency) Bandwidth = 0.01Hz to 1Hz 200 nV
50 nV
Bandwidth = 0.1Hz to 10Hz 200 nV
40 nV
i
n
Input Noise Current Density f = 1kHz 0.15 pA/√Hz
Input Noise Current (Low Frequency) Bandwidth = 0.01Hz to 1Hz 7 pA
1.3 pA
Bandwidth = 0.1Hz to 10Hz 5 pA
0.4 pA
R
IN
Input Resistance Common Mode, VCM = ±13.5V 400 GΩ
P-P
RMS
P-P
RMS
P-P
RMS
P-P
RMS
Differential 20 MΩ
C
IN
V
CM
Input Capacitance 4pF
Input Voltage Range Guaranteed by CMRR ● ±13.5 ±14 V
CMRR Common Mode Rejection Ratio VCM = –13.5V to 13.5V 115 135 dB
● 112 135 dB
Minimum Supply Voltage Guaranteed by PSRR ● ±1.2 ±1.35 V
PSRR Power Supply Rejection Ratio VS = ±1.35V to ±18V ● 112 135 dB
A
VOL
Large-Signal Voltage Gain RL = 10k, V
RL = 5k, V
Channel Separation V
= –13.5V to 13.5V, LT6014 ● 120 140 dB
OUT
= –13.5V to 13.5V 1000 2000 V/mV
OUT
= –13.5V to 13.5V 500 1500 V/mV
OUT
● 600 V/mV
● 300 V/mV
6
60134fb
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
The ● denotes the specifications which apply over the full operating
= 25°C. VS = ±15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5)
A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT
I
SC
Maximum Output Swing No Load, 50mV Overdrive 45 80 mV
(Positive, Referred to V
Maximum Output Swing No Load, 50mV Overdrive 45 80 mV
(Negative, Referred to V
Output Short-Circuit Current V
(Note 3)
+
) ● 100 mV
I
= 1mA, 50mV Overdrive 140 195 mV
SOURCE
–
) ● 100 mV
I
= 1mA, 50mV Overdrive 150 250 mV
SINK
= 0V, 1V Overdrive (Source) 8 15 mA
OUT
V
= 0V, –1V Overdrive (Sink) 8 20 mA
OUT
● 240 mV
● 300 mV
● 5mA
● 5mA
SR Slew Rate AV = –10, RF = 50k, RG = 5k 0.15 0.2 V/µs
= 0°C to 70°C ● 0.12 V/µs
T
A
T
= –40°C to 85°C ● 0.1 V/µs
A
GBW Gain Bandwidth Product f = 10kHz 1.1 1.6 MHz
● 1 MHz
t
s
tr, t
∆V
f
OS
Settling Time AV = –4, 0.01%, V
= 0V to 10V 40 µs
OUT
Rise Time, Fall Time AV = 5, 10% to 90%, 0.1V Step 0.9 µs
Offset Voltage Match (Note 7) LT6014AS8 50 270 µV
= 0°C to 70°C ● 320 µV
T
A
= –40°C to 85°C ● 370 µV
T
A
LT6014ADD 50 320 µV
T
= 0°C to 70°C ● 420 µV
A
= –40°C to 85°C ● 450 µV
T
A
LT6014S8 70 300 µV
= 0°C to 70°C ● 350 µV
T
A
T
= –40°C to 85°C ● 400 µV
A
LT6014DD 80 400 µV
T
= 0°C to 70°C ● 500 µV
A
= –40°C to 85°C ● 550 µV
T
A
∆I
B
Input Bias Current Match (Note 7) LT6014AS8, LT6014ADD 200 800 pA
= 0°C to 70°C ● 1200 pA
T
A
T
= –40°C to 85°C ● 1400 pA
A
LT6014S8, LT6014DD 300 1600 pA
= 0°C to 70°C ● 2000 pA
T
A
= –40°C to 85°C ● 2400 pA
T
A
∆CMRR Common Mode Rejection Ratio LT6014 ● 109 135 dB
Match (Note 7)
∆PSRR Power Supply Rejection Ratio LT6014 ● 106 135 dB
Match (Note 7)
I
S
Supply Current per Amplifier 200 250 µA
= 0°C to 70°C ● 290 µA
T
A
= –40°C to 85°C ● 310 µA
T
A
60134fb
7
LT6013/LT6014
INPUT COMMON MODE VOLTAGE (V)
1000
900
800
600
400
200
700
500
300
100
0
60134 G03
CHANGE IN OFFSET VOLTAGE (µV)
VS = 5V, 0V
TA = 85°C
TA = –40°C
TA = 25°C
0
0.5
1.0 1.5 2.0 2.5 3.0 3.5 4.0 5.04.5
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those beyond which the life of the
device may be impaired.
Note 2: The inputs are protected by back-to-back diodes and internal
series resistors. If the differential input voltage exceeds 10V, the input
current must be limited to less than 10mA.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum ratings.
Note 4: The LT6013C/LT6014C and LT6013I/LT6014I are guaranteed
Note 6: This parameter is not 100% tested.
Note 7: Matching parameters are the difference between the two
amplifiers. ∆CMRR and ∆PSRR are defined as follows: (1) CMRR and
PSRR are measured in µV/V for the individual amplifiers. (2) The
difference between matching amplifiers is calculated in µV/V. (3) The
result is converted to dB.
Note 8: The specifications for V
the package. The following table clarifies the notations.
functional over the operating temperature range of – 40°C to 85°C.
Note 5: The LT6013C and LT6014C are guaranteed to meet the specified
performance from 0°C to 70°C and are designed, characterized and
expected to meet specified performance from –40°C to 85°C but is not
S8 Package LT6013S8, LT6014S8 LT6013AS8, LT6014AS8
DFN Package LT6013DD, LT6014DD LT6013ADD, LT6014ADD
tested or QA sampled at these temperatures. The LT6013I and LT6014I are
guaranteed to meet specified performance from –40°C to 85°C.
UW
TYPICAL PERFOR A CE CHARACTERISTICS
Input Offset Voltage
Distribution of Input Offset Voltage
30
VS = 5V, 0V
= 25°C
T
A
25
20
15
10
PERCENT OF UNITS (%)
5
0
–45 –35 –15 –5 5 15 25 35 45
–25
INPUT OFFSET VOLTAGE (µV)
LT6013AS8
60134 G01
vs Temperature
125
VS = 5V, 0V
100
REPRESENTATIVE UNITS
75
50
25
0
–25
–50
OFFSET VOLTAGE (µV)
–75
–100
–125
–50
–25
50
25
0
TEMPERATURE (°C)
75
, IB, and IOS depend on the grade and on
OS
STANDARD GRADE A GRADE
Offset Voltage
vs Input Common Mode Voltage
125
100
60134 G02
Distribution of Input Bias Current
35
30
25
20
15
10
PERCENT OF UNITS (%)
5
0
–125 75 125 175
–175
INPUT BIAS CURRENT (pA)
8
–75 25–25
LT6013AS8
60134 G04
Input Bias Current vs Temperature
800
VS = 5V, 0V
TYPICAL PART
600
400
200
0
–200
–400
INPUT BIAS CURRENT (pA)
–600
–800
–50
0
–25
TEMPERATURE (°C)
25 125
50
75 100
60134 G05
Input Bias Current
vs Input Common Mode Voltage
400
VS = 5V, 0V
300
200
100
0
–100
–200
–300
CHANGE IN INPUT BIAS CURRENT (pA)
–400
0
0.5
INPUT COMMON MODE VOLTAGE (V)
TA = –40°C
TA = 25°C
TA = 85°C
1.0 1.5 2.0
2.5 3.0 3.5 4.0 4.5
60134 G06
60134fb
UW
LOAD CURRENT (mA)
0.01
0.01
OUTPUT LOW SATURATION VOLTAGE (V)
0.1
1
0.1 1 10
60134 G13
TA = 85°C
TA = 25°C
VS = 5V, 0V
TA = –40°C
TYPICAL PERFOR A CE CHARACTERISTICS
LT6013/LT6014
en, in vs Frequency
CURRENT NOISE
UNBALANCED
SOURCE RESISTORS
1/f CORNER = 40Hz
10 100
1/f CORNER = 2Hz
VS = 5V, 0V
INPUT VOLTAGE NOISE DENSITY (nV/√Hz)
T
A
1
1
= 25°C
VOLTAGE NOISE
10 100 1000
FREQUENCY (Hz)
60134 G07
0.01Hz to 1Hz Voltage Noise
VS = 5V, 0V
= 25°C
T
A
1000
INPUT CURRENT NOISE DENSITY (fA/√Hz)
Total Input Noise
vs Source Resistance
10
VS = 5V, 0V
= 25°C
T
A
f = 1kHz
1
UNBALANCED
SOURCE RESISTORS
0.1
TOTAL NOISE
0.01
RESISTOR NOISE ONLY
0.001
TOTAL INPUT NOISE (µV/√Hz)
0.0001
100 1k 10k 100k 1M 10M
SOURCE RESISTANCE (Ω)
0.1Hz to 10Hz Current Noise
VS = 5V, 0V
= 25°C
T
A
BALANCED SOURCE RESISTANCE
60134 G08
100M
0.1Hz to 10Hz Voltage Noise
VS = 5V, 0V
= 25°C
T
A
INPUT VOLTAGE NOISE (0.1µV/DIV)
246 107135 9
08
TIME (SEC)
TIME (SEC)
60134 G09
0.01Hz to 1Hz Current Noise
VS = 5V, 0V
= 25°C
T
A
BALANCED SOURCE RESISTANCE
INPUT VOLTAGE NOISE (0.1µV/DIV)
0
20 40 60 1007010 30 50 90
Output Voltage Swing
vs Temperature
+
V
–20
–40
–60
60
40
OUTPUT VOLTAGE SWING (mV)
20
–
V
–25 0 50
–50
OUTPUT HIGH
OUTPUT LOW
TEMPERATURE (°C)
TIME (SEC)
25
80
60134 G10
VS = 5V, 0V
NO LOAD
75 100 125
60134 G11
INPUT CURRENT NOISE (2pA/DIV)
246 107135 9
08
TIME (SEC)
TIME (SEC)
60134 G31
Output Saturation Voltage
vs Load Current (Output High)
1
VS = 5V, 0V
TA = 85°C
TA = 25°C
0.1
TA = –40°C
OUTPUT HIGH SATURATION VOLTAGE (V)
0.01
0.01
0.1 1 10
LOAD CURRENT (mA)
60134 G12
INPUT CURRENT NOISE (2pA/DIV)
080
20 40 60 1007010 30 50 90
TIME (SEC)
60134 G32
Output Saturation Voltage
vs Load Current (Output Low)
60134fb
9
LT6013/LT6014
FREQUENCY (Hz)
110
40
CHANNEL SEPARATION (dB)
60
80
100
120
100 1k 10k 100k 1M
60134 G20
20
0
140
160
LT6014
V
S
= 5V, 0V
T
A
= 25°C
UW
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage
500
PER AMPLIFIER
450
400
350
300
250
200
150
SUPPLY CURRENT (µA)
100
50
0
0
TA = 25°C
42
SUPPLY VOLTAGE (±V)
86
10
TA = 85°C
TA = –40°C
12 14 18
THD + Noise vs Frequency
10
VS = ±15V
= 20V
V
OUT
TA = 25°C
1
A
0.1
0.01
THD + NOISE (%)
0.001
P-P
= 5
V
Warm-Up Drift
3
2
1
CHANGE IN OFFSET VOLTAGE (µV)
0
16
20
60134 G14
30 60 90 120
TIME AFTER POWER-ON (SECONDS)
±15V
±2.5V
150
60134 G15
Settling Time vs Output Step
4
VS = 5V, 0V
= 5
A
V
= 25°C
T
A
3
2
OUTPUT STEP (V)
1
0.1%
0.01%
THD + Noise vs Frequency
10
VS = 5V, 0V
= 2V
V
OUT
P-P
TA = 25°C
1
= 5
A
V
0.1
0.01
THD + NOISE (%)
0.001
0.0001
10
1k 10k100 100k
FREQUENCY (Hz)
Channel Separation vs Frequency
60134 G16
0.0001
10
CMRR vs Frequency
160
TA = 25°C
140
120
100
80
60
40
20
COMMON MODE REJECTION RATIO (dB)
0
110
10
1k 10k100
60134 G17
60134 G21
FREQUENCY (Hz)
100 1k 10k 100k 1M
FREQUENCY (Hz)
0
515
0
10
SETTLING TIME (µs)
20
PSRR vs Frequency, Single Supply
140
120
100
80
60
40
20
POWER SUPPLY REJECTION RATIO (dB)
0
1 10 100 1k 10k 100k 1M
0.1
FREQUENCY (Hz)
25 30
60134 G18
VS = 5V, 0V
= 25°C
T
A
60134 G19
PSRR vs Frequency, Split Supplies
140
120
100
80
60
40
20
POWER SUPPLY REJECTION RATIO (dB)
0
1 10 100 1k 10k 100k 1M
0.1
NEGATIVE
SUPPLY
FREQUENCY (Hz)
POSITIVE
SUPPLY
VS = ±15V
= 25°C
T
A
60134 G22
60134fb
UW
TYPICAL PERFOR A CE CHARACTERISTICS
LT6013/LT6014
Output Impedance vs Frequency Open-Loop Gain vs Frequency
1000
VS = 5V, 0V
= 25°C
T
A
100
10
AV = 100
1
AV = 10
OUTPUT IMPEDANCE (Ω)
0.1
AV = 5
0.01
1 100 1k 10k
10
FREQUENCY (Hz)
60134 G23
140
120
100
OPEN-LOOP GAIN (dB)
–20
–40
100k
80
60
40
20
0
0.1 1
0.01 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
Gain vs Frequency, AV = 5
22
VS = 5V, 0V
= 25°C
T
A
18
14
10
GAIN (dB)
6
CL = 500pF
CL = 50pF
VS = 5V, 0V
= 25°C
T
A
= 10k
R
L
60134 G24
60
50
40
30
20
10
0
–10
OPEN-LOOP GAIN (dB)
–20
–30
–40
Gain vs Frequency, AV = –4
20
VS = 5V, 0V
= 25°C
T
A
16
12
8
GAIN (dB)
4
Gain and Phase vs Frequency
VS = 5V, 0V
= 25°C
T
A
= 10k
R
L
PHASE
GAIN
1k 100k 1M 10M
CL = 500pF
10k
FREQUENCY (Hz)
60134 G25
CL = 50pF
–80
–120
PHASE SHIFT (DEG)
–160
–200
–240
–280
2
–2
1k
10k 100k 1M
FREQUENCY (Hz)
60134 G26
0
–4
1k
10k 100k 1M
FREQUENCY (Hz)
60134 G27
Small-Signal Transient Response Large-Signal Transient Response Rail-to-Rail Output Swing
5V
20mV/DIV
= 5 2µs/DIV 60134 G28
A
V
1V/DIV
= –4 20µs/DIV 60134 G29
A
V
VS = 5V, 0V
R
= 2k
L
1V/DIV
0V
AV = –4 100µs/DIV 60134 G30
VS = 5V, 0V
R
= 2k
L
5V
0V
60134fb
11
LT6013/LT6014
WUUU
APPLICATIO S I FOR ATIO
Not Unity-Gain Stable
The
LT6013 and
LT6014 amplifiers are optimized for the
lowest possible noise and smallest package size, and are
intentionally decompensated to be stable in a gain configuration of 5 or greater. Do not connect the amplifiers in
a gain less than 5 (such as unity-gain). For a unity-gain
stable amplifier with similar performance though slightly
higher noise and lower bandwidth, see the LT6010 and
LT6011/LT6012 datasheets.
Figure 1 shows simple inverting and non-inverting op amp
configurations and indicates how to achieve a gain of 5 or
greater. For more general feedback networks, determine
the gain that the op amp “sees” as follows:
1. Suppose the op amp is removed from the circuit.
2. Apply a small-signal voltage at the output node of the
op amp.
3. Find the differential voltage that would appear across
the two inputs of the op amp.
4. The ratio of the output voltage to the input voltage is
the gain that the op amp “sees”. This ratio must be
5 or greater.
Do not place a capacitor bigger than 200pF between the
output to the inverting input unless there is a 5 times larger
capacitor from that input to AC ground. Otherwise, the op
amp gain would drop to less than 5 at high frequencies,
and the stability of the loop would be compromised.
The LT6013 and LT6014 can be used in lower gain
configurations when an impedance is connected between
the op amp inputs. Figure 2 shows inverting and noninverting unity gain connections. The RC network across
the op amp inputs results in a large enough noise gain at
high frequencies, thereby ensuring stability. At low frequencies, the capacitor is an open circuit so the DC
precision (offset and noise) remains very good.
V
REF
R
G
V
IN
INVERTING:
SIGNAL GAIN = –R
OP AMP GAIN = 1 + RF/R
STABLE IF 1 + RF/RG ≥ 5
V
IN
10k
+
V
IN
–
R
F
NONINVERTING:
F/RG
G
SIGNAL GAIN = 1 + R
OP AMP GAIN = 1 + RF/R
STABLE IF 1 + RF/RG ≥ 5
+
V
IN
–
R
F
R
G
V
REF
F/RG
G
+
–
UNITY-GAIN:
DO NOT USE
60134 F01
Figure 1. Use LT6013 and LT6014 in a Gain of 5 or Greater
10k
10k
V
IN
3k
1nF
UNITY GAIN INVERTER UNITY GAIN FOLLOWER
–
V
OUT
+
60134 F02
2.5k
1nF
+
V
OUT
–
12
Figure 2. Stabilizing Op Amp for Unity Gain Operation
60134fb
WUUU
APPLICATIO S I FOR ATIO
LT6013/LT6014
Preserving Input Precision
Preserving the input accuracy of the
requires that the applications circuit and PC board layout
do not introduce errors comparable to or greater than the
10µV typical offset of the amplifiers. Temperature differen-
tials across the input connections can generate thermocouple voltages of 10’s of microvolts so the connections
to the input leads should be short, close together and away
from heat dissipating components. Air currents across the
board can also generate temperature differentials.
The extremely low input bias currents allow high accuracy
to be maintained with high impedance sources and feedback resistors. The LT6013 and LT6014 low input bias currents are obtained by a cancellation circuit on-chip. This
causes the resulting I
implied by the IOS specification being comparable to IB. Do
not try to balance the input resistances in each input lead;
instead keep the resistance at either input as low as possible for maximum accuracy.
Leakage currents on the PC board can be higher than the
input bias current. For example, 10GΩ of leakage between
a 15V supply lead and an input lead will generate 1.5nA!
Surround the input leads with a guard ring driven to the
same potential as the input common mode to avoid excessive leakage in high impedance applications.
Input Protection
The LT6013/LT6014 features on-chip back-to-back diodes
between the input devices, along with 500Ω resistors in
series with either input. This internal protection limits the
input current to approximately 10mA (the maximum allowed) for a 10V differential input voltage. Use additional
external series resistors to limit the input current to 10mA
in applications where differential inputs of more than 10V
+
B
and I
LT6013 and
–
to be uncorrelated, as
B
LT6014
are expected. For example, a 1k resistor in series with each
input provides protection against 30V differential voltage.
Input Common Mode Range
The LT6013/LT6014 output is able to swing close to each
power supply rail (rail-to-rail out), but the input stage is
limited to operating between V
ing this common mode range will cause the gain to drop
to zero; however, no phase reversal will occur.
Total Input Noise
The LT6013 and LT6014 amplifiers contribute negligible
noise to the system when driven by sensors (sources) with
impedance between 10kΩ and 1MΩ. Throughout this
range, total input noise is dominated by the 4kTR
of the source. If the source impedance is less than 10kΩ,
the input voltage noise of the amplifier starts to contribute
with a minimum noise of 9.5nV/√Hz for very low source impedance. If the source impedance is more than 1MΩ, the
input current noise of the amplifier, multiplied by this high
impedance, starts to contribute and eventually dominate.
Total input noise spectral density can be calculated as:
v e kTR i R
n TOTAL n S n S()
where en = 9.5nV/√Hz , in = 0.15pA/√Hz and RS is the total
impedance at the input, including the source impedance.
Capacitive Loads
The LT6013 and LT6014 can drive capacitive loads up to
500pF at a gain of 5. The capacitive load driving capability
increases as the amplifier is used in higher gain configurations. A small series resistance between the output and
the load further increases the amount of capacitance that
the amplifier can drive.
2
–
+ 1V and V+ – 1.2V. Exceed-
noise
S
2
4
()=+ +
60134fb
13
LT6013/LT6014
WW
SI PLIFIED SCHE ATIC
+
V
(One Amplifier)
–IN
+IN
Q13
Q14
Q18
R6
Q19
OUT
C3
Q20
60134 SS
R3 R4
Q7
Q8
Q3
R1
500Ω
R2
500Ω
–
V
Q1 Q2
Q4
Q21
B
A
Q17
C
D2D1
B
A
Q11
Q16
Q22
Q15
Q9
R5
Q6
C1
R
Q12
C1
D3
D4
D5
Q5
C2
Q10
14
60134fb
PACKAGE DESCRIPTIO
LT6013/LT6014
U
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698)
3.5 ±0.05
0.675 ±0.05
1.65 ±0.05
(2 SIDES)2.15 ±0.05
PACKAGE
OUTLINE
0.25 ± 0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
2.38 ±0.05
(2 SIDES)
0.50
BSC
8-Lead Plastic Small Outline (Narrow .150 Inch)
PIN 1
TOP MARK
(NOTE 6)
0.200 REF
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON TOP AND BOTTOM OF PACKAGE
S8 Package
(Reference LTC DWG # 05-08-1610)
3.00 ±0.10
(4 SIDES)
0.75 ±0.05
1.65 ± 0.10
0.00 – 0.05
R = 0.115
TYP
(2 SIDES)
0.25 ± 0.05
BOTTOM VIEW—EXPOSED PAD
2.38 ±0.10
(2 SIDES)
0.38 ± 0.10
85
14
0.50 BSC
(DD8) DFN 1203
.050 BSC
.245
MIN
.030 ±.005
TYP
RECOMMENDED SOLDER PAD LAYOUT
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
INCHES
(MILLIMETERS)
.189 – .197
(4.801 – 5.004)
.045 ±.005
.160
±.005
.228 – .244
(5.791 – 6.197)
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
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.
NOTE 3
7
8
1
2
5
6
.150 – .157
(3.810 – 3.988)
NOTE 3
3
4
.053 – .069
(1.346 – 1.752)
.014 – .019
(0.355 – 0.483)
TYP
.008 – .010
(0.203 – 0.254)
.010 – .020
(0.254 – 0.508)
.016 – .050
(0.406 – 1.270)
× 45°
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
0°– 8° TYP
15
SO8 0303
60134fb
LT6013/LT6014
TYPICAL APPLICATIO
V
S
4
1, 2
6
7.87k
100k
1%
1%
LT1790-1.25
= 3V TO 18V
V
S
= ~600µA
I
S
= ~40mV/mT
V
OUT
1µF
U
Low Power Hall Sensor Amplifier
HALL ELEMENT
HW-108A (RANK D)
www.asahi-kasei.co.jp
1
10k
OFFSET
V
S
ADJUST
+
LT1782
3
–
ASAHI-KASEI
400Ω
×4
26.7k
1%
V
S
3
2
2
499Ω
4
499Ω
6
5
+
1/2 LT6014
–
49.9k
49.9k
–
1/2 LT6014
+
8
0.1µF
4
60134 TA02
1
7
+
V
OUT
–
Precision Micropower Photodiode Amplifier
C1
20pF
I
PHOTODIODE
R1
100k
V
GAIN: AZ = 100kΩ =
+
S
10% TO 90% RISE TIME: t
BANDWIDTH: BW = 110kHz
V
OUT
I
PHOTODIODE
= 3.2µs
r
–
880nm IR
PHOTODIODE
λ
OPTO-DIODE CORP
ODD-45W
C
D
170pF
+
LT6013
V
S
–
V
OUT
VS = ±1.35V TO ±18V
C1, CD SATISFY GAIN OF 5
STABILITY REQUIREMENT AT AC
OUTPUT OFFSET = 60µV MAX FOR LT6013AS8
60134 TA04
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1112/LT1114 Dual/Quad Low Power, Picoamp Input Precision Op Amps 250pA Input Bias Current
LT1880 Rail-to-Rail Output, Picoamp Input Precision Op Amp SOT-23
LT1881/LT1882 Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps C
LT1884/LT1885 Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps 9.5nV/√Hz Input Noise
LT6011/LT6012 Dual/Quad Low Power Rail-to-Rail Output, Precision Op Amps 14nV/√Hz, Unity-Gain Stable Version of LT6014
LT6010 Single Low Power Rail-to-Rail Output, Precision Op Amp 200pA Input Bias Current, Shutdown Feature
Up to 1000pF
LOAD
16
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
60134fb
LT/LT 0305 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2004
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