LINER LT6013 Rail-to-rail output precision op amp Datasheet

LT6013/LT6014
Single/Dual 145µA,
9.5nV/√Hz, AV ≥5, Rail-to-Rail
Output Precision Op Amps
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FEATURES
DESCRIPTIO
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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.
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35µV Maximum Offset Voltage (LT6013A)
Low 1/f Noise: 200nVP-P (0.1Hz to 10Hz)
40nVRMS (0.1Hz to 10Hz)
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 CLOAD
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
DFN Packages
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APPLICATIO S
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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.
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.
Thermocouple Amplifiers
Precision Photodiode Amplifiers
Instrumentation Amplifiers
Battery-Powered Precision Systems
Low-Voltage Precision Systems
Micro-Power Sensor Interface
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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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.
TYPICAL APPLICATIO
Gain of 10 Single Ended to Differential Converter
LT6013/LT6014 0.1Hz to 10Hz Voltage Noise
V+
VIN
1/2 LT6014
5 • VIN
–
2k
8.06k
10k
2k
–
1/2 LT6014
VS = 5V, 0V
TA = 25°C
EQUIVALENT RMS VOLTAGE = 40nVRMS
INPUT VOLTAGE NOISE (0.1µV/DIV)
+
–5 • VIN
0
+
V–
60134 TA01a
1
2
3
4 5 6
TIME (SEC)
7
8
9
10
60134 TA01b
60134fb
1
LT6013/LT6014
W W
W
AXI U
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ABSOLUTE
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
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
U
U
W
PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
TOP VIEW
*DNC 1
8 *DNC
–IN 2
–
7 V+
+IN 3
+
6 OUT
V– 4
5 NC
LT6013CDD
LT6013IDD
LT6013ACDD
LT6013AIDD
ORDER PART
NUMBER
TOP VIEW
*DNC 1
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 160°C/W
UNDERSIDE METAL CONNECTED TO V–
(PCB CONNECTION OPTIONAL)
–
7
V+
+IN 3
+
6
OUT
5
NC
*Do Not Connect
8 V+
OUT A 1
+IN A 3
V
–
4
7 OUT B
A
B
6 –IN B
5 +IN B
LT6014CDD
LT6014IDD
LT6014ACDD
LT6014AIDD
TOP VIEW
OUT A 1
–IN A 2
TJMAX = 125°C, θJA = 160°C/W
UNDERSIDE METAL CONNECTED TO V–
(PCB CONNECTION OPTIONAL)
8
V+
7
OUT B
6
–IN B
5
+IN B
A
+IN A 3
V–
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
LT6013CS8
LT6013IS8
LT6013ACS8
LT6013AIS8
S8 PART MARKING
6013
6013I
6013A
6013AI
ORDER PART
NUMBER
ORDER PART
NUMBER
TOP VIEW
–IN A 2
4
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 190°C/W
LBHC
*Do Not Connect
*DNC
–IN 2
V–
DD PART MARKING*
8
DD PART MARKING*
LBCB
B
4
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 190°C/W
LT6014CS8
LT6014IS8
LT6014ACS8
LT6014AIS8
S8 PART MARKING
6014
6014I
6014A
6014AI
*Temperature and electrical grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
60134fb
2
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
VOS
Input Offset Voltage (Note 8)
LT6013AS8
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013S8, LT6014AS8
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014S8
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013DD, LT6014ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014DD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
10
35
60
75
µV
µV
µV
20
60
85
110
µV
µV
µV
20
60
110
150
µV
µV
µV
20
75
100
125
µV
µV
µV
30
85
135
170
µV
µV
µV
30
125
175
210
µV
µV
µV
0.2
0.2
0.8
1.4
µV/°C
µV/°C
100
250
500
600
pA
pA
pA
100
500
600
700
pA
pA
pA
150
800
1000
1200
pA
pA
pA
100
±250
±500
±600
pA
pA
pA
LT6013S8, LT6013DD, LT6014AS8, LT6014ADD
●
TA = 0°C to 70°C
●
TA = –40°C to 85°C
100
±400
±600
±800
pA
pA
pA
LT6014S8, LT6014DD
TA = 0°C to 70°C
TA = –40°C to 85°C
150
±800
±1000
±1200
pA
pA
pA
∆VOS/∆T
Input Offset Voltage Drift (Note 6)
S8 Packages
DD Packages
●
●
IOS
Input Offset Current (Note 8)
LT6013AS8, LT6013ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014AS8, LT6014ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013/LT6014 (Standard grades)
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013AS8, LT6013ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
IB
en
Input Bias Current (Note 8)
Input Noise Voltage Density
f = 1kHz, LT6013/LT6014
f = 1kHz, LT6013A/LT6014A
●
●
9.5
9.5
13
UNITS
nV/√Hz
nV/√Hz
Input Noise Voltage (Low Frequency) Bandwidth = 0.01Hz to 1Hz
200
50
nVP-P
nVRMS
Bandwidth = 0.1Hz to 10Hz
200
40
nVP-P
nVRMS
60134fb
3
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
in
Input Noise Current Density
f = 1kHz
MIN
TYP
UNITS
0.15
pA/√Hz
Input Noise Current (Low Frequency) Bandwidth = 0.01Hz to 1Hz
7
1.3
pAP-P
pARMS
Bandwidth = 0.1Hz to 10Hz
5
0.4
pAP-P
pARMS
Common Mode, VCM = 1V to 3.8V
Differential
120
20
GΩ
MΩ
4
pF
RIN
Input Resistance
CIN
Input Capacitance
VCM
Input Voltage Range (Positive)
Input Voltage Range (Negative)
Guaranteed by CMRR
Guaranteed by CMRR
●
●
3.8
Common Mode Rejection Ratio
VCM = 1V to 3.8V
●
107
135
CMRR
MAX
4
0.7
1
V
V
dB
Minimum Supply Voltage
Guaranteed by PSRR
●
PSRR
Power Supply Rejection Ratio
VS = 2.7V to 36V, VCM = 1/2VS
●
112
135
dB
AVOL
Large-Signal Voltage Gain
RL = 10k, VOUT = 1V to 4V
RL = 2k, VOUT = 1V to 4V
●
●
300
250
2000
2000
V/mV
V/mV
Channel Separation
VOUT = 1V to 4V, LT6014
●
110
140
dB
Maximum Output Swing
(Positive, Referred to V +)
No Load, 50mV Overdrive
VOUT
2.4
55
65
mV
mV
120
170
220
mV
mV
40
55
65
mV
mV
150
225
275
mV
mV
●
Maximum Output Swing
(Negative, Referred to 0V)
No Load, 50mV Overdrive
●
ISINK = 1mA, 50mV Overdrive
●
ISC
Output Short-Circuit Current (Note 3) VOUT = 0V, 1V Overdrive, Source
8
4
14
●
mA
mA
8
4
21
●
mA
mA
0.15
0.12
0.1
0.2
●
●
V/µs
V/µs
V/µs
1
0.9
1.4
●
MHz
MHz
VOUT = 5V, –1V Overdrive, Sink
SR
GBW
Slew Rate
Gain Bandwidth Product
AV = –10, RF = 50k, RG = 5k
TA = 0°C to 70°C
TA = –40°C to 85°C
V
35
●
ISOURCE = 1mA, 50mV Overdrive
2.7
f = 10kHz
ts
Settling Time
AV = –4, 0.01%, VOUT = 1.5V to 3.5V
20
µs
tr, tf
Rise Time, Fall Time
AV = 5, 10% to 90%, 0.1V Step
1
µs
60134fb
4
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
∆VOS
Offset Voltage Match (Note 7)
LT6014AS8
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014S8
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014DD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014AS8, LT6014ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014S8, LT6014DD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
∆IB
Input Bias Current Match (Note 7)
MIN
TYP
MAX
UNITS
50
120
170
220
µV
µV
µV
50
170
270
340
µV
µV
µV
50
150
200
250
µV
µV
µV
60
250
350
420
µV
µV
µV
200
800
1200
1400
pA
pA
pA
300
1600
2000
2400
pA
pA
pA
∆CMRR
Common Mode Rejection Ratio
Match (Note 7)
LT6014
●
101
135
dB
∆PSRR
Power Supply Rejection Ratio
Match (Note 7)
LT6014
●
106
135
dB
IS
Supply Current
per Amplifier
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
145
165
210
230
µA
µA
µA
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
VOS
Input Offset Voltage (Note 8)
LT6013AS8
TA = 0°C to 70°C
TA = –40°C to 85°C
MIN
●
●
LT6013S8
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013DD, LT6014AS8
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014S8
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014DD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
TYP
MAX
UNITS
20
60
80
110
µV
µV
µV
25
85
110
135
µV
µV
µV
25
85
135
170
µV
µV
µV
30
135
160
185
µV
µV
µV
35
150
175
200
µV
µV
µV
35
160
210
225
µV
µV
µV
40
200
250
275
µV
µV
µV
60134fb
5
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
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
∆VOS/∆T
Input Offset Voltage Drift (Note 6)
S8 Packages
DD Packages
●
●
IOS
Input Offset Current (Note 8)
LT6013AS8, LT6013ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014AS8, LT6014ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013/LT6014 (Standard grades)
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013AS8, LT6013ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6013S8, LT6013DD, LT6014AS8, LT6014ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
LT6014S8, LT6014DD
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
IB
en
in
Input Bias Current (Note 8)
Input Noise Voltage Density
MIN
f = 1kHz, LT6013/LT6014
f = 1kHz, LT6013A/LT6014A
TYP
MAX
UNITS
0.2
0.2
0.8
1.2
µV/°C
µV/°C
100
250
500
600
pA
pA
pA
100
500
600
700
pA
pA
pA
150
800
1000
1200
pA
pA
pA
100
±250
±500
±600
pA
pA
pA
100
±400
±600
±800
pA
pA
pA
150
±800
±1000
±1200
pA
pA
pA
9.5
9.5
13
nV/√Hz
nV/√Hz
Input Noise Voltage (Low Frequency) Bandwidth = 0.01Hz to 1Hz
200
50
nVP-P
nVRMS
Bandwidth = 0.1Hz to 10Hz
200
40
nVP-P
nVRMS
f = 1kHz
0.15
pA/√Hz
Input Noise Current (Low Frequency) Bandwidth = 0.01Hz to 1Hz
7
1.3
pAP-P
pARMS
Bandwidth = 0.1Hz to 10Hz
5
0.4
pAP-P
pARMS
Common Mode, VCM = ±13.5V
Differential
400
20
GΩ
MΩ
4
pF
Input Noise Current Density
RIN
Input Resistance
CIN
Input Capacitance
VCM
Input Voltage Range
Guaranteed by CMRR
CMRR
Common Mode Rejection Ratio
VCM = –13.5V to 13.5V
Minimum Supply Voltage
±13.5
±14
V
●
115
112
135
135
dB
dB
Guaranteed by PSRR
●
●
112
135
dB
2000
●
1000
600
V/mV
V/mV
500
300
1500
●
V/mV
V/mV
●
120
140
dB
PSRR
Power Supply Rejection Ratio
VS = ±1.35V to ±18V
AVOL
Large-Signal Voltage Gain
RL = 10k, VOUT = –13.5V to 13.5V
RL = 5k, VOUT = –13.5V to 13.5V
Channel Separation
●
VOUT = –13.5V to 13.5V, LT6014
±1.2
±1.35
V
60134fb
6
LT6013/LT6014
ELECTRICAL CHARACTERISTICS
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
VOUT
PARAMETER
Maximum Output Swing
(Positive, Referred to V +)
CONDITIONS
MIN
No Load, 50mV Overdrive
TYP
MAX
UNITS
45
80
100
mV
mV
140
195
240
mV
mV
45
80
100
mV
mV
150
250
300
mV
mV
●
ISOURCE = 1mA, 50mV Overdrive
●
Maximum Output Swing
(Negative, Referred to V –)
No Load, 50mV Overdrive
●
ISINK = 1mA, 50mV Overdrive
●
ISC
Output Short-Circuit Current
(Note 3)
VOUT = 0V, 1V Overdrive (Source)
8
5
15
●
mA
mA
8
5
20
●
mA
mA
0.15
0.12
0.1
0.2
●
●
V/µs
V/µs
V/µs
1.1
1
1.6
●
MHz
MHz
µs
VOUT = 0V, –1V Overdrive (Sink)
SR
GBW
Slew Rate
Gain Bandwidth Product
AV = –10, RF = 50k, RG = 5k
TA = 0°C to 70°C
TA = –40°C to 85°C
f = 10kHz
ts
Settling Time
AV = –4, 0.01%, VOUT = 0V to 10V
40
tr, tf
Rise Time, Fall Time
AV = 5, 10% to 90%, 0.1V Step
0.9
∆VOS
Offset Voltage Match (Note 7)
LT6014AS8
TA = 0°C to 70°C
TA = –40°C to 85°C
50
●
●
270
320
370
µV
µV
µV
LT6014ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
50
●
●
320
420
450
µV
µV
µV
LT6014S8
TA = 0°C to 70°C
TA = –40°C to 85°C
70
●
●
300
350
400
µV
µV
µV
LT6014DD
TA = 0°C to 70°C
TA = –40°C to 85°C
80
●
●
400
500
550
µV
µV
µV
LT6014AS8, LT6014ADD
TA = 0°C to 70°C
TA = –40°C to 85°C
200
●
●
800
1200
1400
pA
pA
pA
LT6014S8, LT6014DD
TA = 0°C to 70°C
TA = –40°C to 85°C
300
●
●
1600
2000
2400
pA
pA
pA
∆IB
Input Bias Current Match (Note 7)
µs
∆CMRR
Common Mode Rejection Ratio
Match (Note 7)
LT6014
●
109
135
dB
∆PSRR
Power Supply Rejection Ratio
Match (Note 7)
LT6014
●
106
135
dB
IS
Supply Current
per Amplifier
TA = 0°C to 70°C
TA = –40°C to 85°C
●
●
200
250
290
310
µA
µA
µA
60134fb
7
LT6013/LT6014
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
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
tested or QA sampled at these temperatures. The LT6013I and LT6014I are
guaranteed to meet specified performance from –40°C to 85°C.
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 VOS, IB, and IOS depend on the grade and on
the package. The following table clarifies the notations.
STANDARD GRADE
A GRADE
S8 Package
LT6013S8, LT6014S8
LT6013AS8, LT6014AS8
DFN Package
LT6013DD, LT6014DD
LT6013ADD, LT6014ADD
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Input Offset Voltage
vs Temperature
Distribution of Input Offset Voltage
100
1000
VS = 5V, 0V
REPRESENTATIVE UNITS
CHANGE IN OFFSET VOLTAGE (µV)
PERCENT OF UNITS (%)
25
125
LT6013AS8
VS = 5V, 0V
TA = 25°C
75
OFFSET VOLTAGE (µV)
30
Offset Voltage
vs Input Common Mode Voltage
20
15
10
50
25
0
–25
–50
–75
5
–100
5
15
25
35
45
INPUT OFFSET VOLTAGE (µV)
50
25
0
75
TEMPERATURE (°C)
800
LT6013AS8
600
INPUT BIAS CURRENT (pA)
PERCENT OF UNITS (%)
30
20
15
10
5
100
–175 –125 –75 –25 25 75 125 175
INPUT BIAS CURRENT (pA)
60134 G04
TA = 25°C
500
TA = 85°C
400
300
200
0
125
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
INPUT COMMON MODE VOLTAGE (V)
60134 G03
Input Bias Current
vs Input Common Mode Voltage
400
VS = 5V, 0V
TYPICAL PART
400
200
0
–200
–400
–600
0
600
Input Bias Current vs Temperature
Distribution of Input Bias Current
25
TA = –40°C
700
60134 G02
60134 G01
35
800
100
–125
–50 –25
CHANGE IN INPUT BIAS CURRENT (pA)
0
–45 –35 –25 –15 –5
VS = 5V, 0V
900
–800
–50
TA = –40°C
200
100
0
0
25
75
50
TEMPERATURE (°C)
100
125
60134 G05
TA = 25°C
–100
TA = 85°C
–200
–300
–400
–25
VS = 5V, 0V
300
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
INPUT COMMON MODE VOLTAGE (V)
60134 G06
60134fb
8
LT6013/LT6014
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Total Input Noise
vs Source Resistance
en, in vs Frequency
100
1/f CORNER = 2Hz
VOLTAGE NOISE
VS = 5V, 0V
TA = 25°C
1
10
100
FREQUENCY (Hz)
1
VS = 5V, 0V
TA = 25°C
f = 1kHz
1 UNBALANCED
SOURCE RESISTORS
0.1
TOTAL NOISE
0.01
RESISTOR NOISE ONLY
0.001
0.0001
100
1000
1k
10k 100k
1M
10M
SOURCE RESISTANCE (Ω)
60134 G07
1
60
OUTPUT LOW
40
20
V–
– 50 – 25
0
50
75
25
TEMPERATURE (°C)
100
125
60134 G11
OUTPUT HIGH SATURATION VOLTAGE (V)
OUTPUT VOLTAGE SWING (mV)
1
OUTPUT HIGH
7
8
2
3
4 5 6
TIME (SEC)
7
INPUT CURRENT NOISE (2pA/DIV)
9
8
0
10
10 20 30 40 50 60 70 80 90 100
TIME (SEC)
60134 G32
1
TA = 85°C
TA = 25°C
0.1
TA = –40°C
0.1
1
LOAD CURRENT (mA)
10
Output Saturation Voltage
vs Load Current (Output Low)
VS = 5V, 0V
0.01
0.01
9
VS = 5V, 0V
TA = 25°C
BALANCED SOURCE RESISTANCE
Output Saturation Voltage
vs Load Current (Output High)
–60
4 5 6
TIME (SEC)
60134 G31
Output Voltage Swing
vs Temperature
–40
3
0.01Hz to 1Hz Current Noise
OUTPUT LOW SATURATION VOLTAGE (V)
INPUT VOLTAGE NOISE (0.1µV/DIV)
INPUT CURRENT NOISE (2pA/DIV)
0
60134 G10
–20
2
60134 G09
VS = 5V, 0V
TA = 25°C
BALANCED SOURCE RESISTANCE
10 20 30 40 50 60 70 80 90 100
TIME (SEC)
VS = 5V, 0V
NO LOAD
1
0
0.1Hz to 10Hz Current Noise
VS = 5V, 0V
TA = 25°C
V+
100M
60134 G08
0.01Hz to 1Hz Voltage Noise
0
VS = 5V, 0V
TA = 25°C
INPUT VOLTAGE NOISE (0.1µV/DIV)
10
TOTAL INPUT NOISE (µV/√Hz)
INPUT VOLTAGE NOISE DENSITY (nV/√Hz)
1/f CORNER = 40Hz
INPUT CURRENT NOISE DENSITY (fA/√Hz)
CURRENT NOISE
UNBALANCED
SOURCE RESISTORS
0.1Hz to 10Hz Voltage Noise
10
1000
10
60134 G12
VS = 5V, 0V
TA = 85°C
TA = 25°C
0.1
TA = –40°C
0.01
0.01
0.1
1
LOAD CURRENT (mA)
10
60134 G13
60134fb
9
LT6013/LT6014
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Warm-Up Drift
Supply Current vs Supply Voltage
PER AMPLIFIER
CHANGE IN OFFSET VOLTAGE (µV)
450
SUPPLY CURRENT (µA)
400
350
TA = 85°C
300
TA = 25°C
250
200
150
TA = –40°C
100
THD + Noise vs Frequency
10
3
VS = 5V, 0V
VOUT = 2VP-P
TA = 25°C
AV = 5
1
±15V
THD + NOISE (%)
500
2
±2.5V
1
0.1
0.01
0.001
50
0
0
2
0
4
30
60
90
120
TIME AFTER POWER-ON (SECONDS)
6 8 10 12 14 16 18 20
SUPPLY VOLTAGE (±V)
THD + Noise vs Frequency
VS = 5V, 0V
AV = 5
TA = 25°C
0.1%
LT6014
VS = 5V, 0V
TA = 25°C
140
0.01%
2
1
0.001
100k
Channel Separation vs Frequency
CHANNEL SEPARATION (dB)
OUTPUT STEP (V)
THD + NOISE (%)
0.01
1k
10k
FREQUENCY (Hz)
160
3
0.1
100
60134 G16
Settling Time vs Output Step
4
VS = ±15V
VOUT = 20VP-P
TA = 25°C
AV = 5
1
0.0001
10
60134 G15
60134 G14
10
150
120
100
80
60
40
20
0.0001
10
0
0
100
1k
FREQUENCY (Hz)
0
10k
5
60134 G17
120
100
80
60
40
20
0
100
1k
10k
FREQUENCY (Hz)
100k
1M
60134 G21
10
100
1k
10k
FREQUENCY (Hz)
VS = 5V, 0V
TA = 25°C
120
100
80
60
40
20
100k
1M
60134 G20
PSRR vs Frequency, Split Supplies
140
POWER SUPPLY REJECTION RATIO (dB)
POWER SUPPLY REJECTION RATIO (dB)
COMMON MODE REJECTION RATIO (dB)
140
140
10
1
30
PSRR vs Frequency, Single Supply
TA = 25°C
1
25
60134 G18
CMRR vs Frequency
160
15
10
20
SETTLING TIME (µs)
VS = ±15V
TA = 25°C
120
100
POSITIVE
SUPPLY
80
60
NEGATIVE
SUPPLY
40
20
0
0
0.1
1
10 100 1k 10k 100k
FREQUENCY (Hz)
1M
60134 G19
0.1
1
10 100 1k 10k 100k
FREQUENCY (Hz)
1M
60134 G22
60134fb
10
LT6013/LT6014
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Output Impedance vs Frequency
1000
VS = 5V, 0V
TA = 25°C
60
VS = 5V, 0V
TA = 25°C
RL = 10k
120
100
40
AV = 100
1
AV = 10
OPEN-LOOP GAIN (dB)
OPEN-LOOP GAIN (dB)
100
10
80
60
40
20
AV = 5
0.01
1
10
100
1k
FREQUENCY (Hz)
10k
100k
–160
GAIN
10
0
–30
–40
0.01 0.1
– 40
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
–200
– 240
1k
10k
100k
1M
FREQUENCY (Hz)
60134 G24
–280
10M
60134 G25
Gain vs Frequency, AV = –4
20
VS = 5V, 0V
TA = 25°C
VS = 5V, 0V
TA = 25°C
16
CL = 500pF
CL = 500pF
14
12
CL = 50pF
GAIN (dB)
GAIN (dB)
PHASE
20
– 20
Gain vs Frequency, AV = 5
18
–120
30
–20
60134 G23
22
–80
–10
0
0.1
VS = 5V, 0V
TA = 25°C
RL = 10k
50
10
CL = 50pF
8
6
4
2
0
–2
1k
10k
100k
FREQUENCY (Hz)
–4
1M
1k
10k
100k
FREQUENCY (Hz)
60134 G26
Small-Signal Transient Response
1M
60134 G27
Large-Signal Transient Response
Rail-to-Rail Output Swing
5V
20mV/DIV
5V
1V/DIV
1V/DIV
0V
AV = 5
PHASE SHIFT (DEG)
OUTPUT IMPEDANCE (Ω)
Gain and Phase vs Frequency
Open-Loop Gain vs Frequency
140
2µs/DIV
60134 G28
AV = –4
VS = 5V, 0V
RL = 2k
20µs/DIV
60134 G29
0V
AV = –4
VS = 5V, 0V
RL = 2k
100µs/DIV
60134 G30
60134fb
11
LT6013/LT6014
U
W
U U
APPLICATIO S I FOR ATIO
Not Unity-Gain Stable
3. Find the differential voltage that would appear across
the two inputs of the op amp.
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.
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.
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:
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.
1. Suppose the op amp is removed from the circuit.
2. Apply a small-signal voltage at the output node of the
op amp.
+
VREF
RG
VIN
+
VIN
–
+
VIN
–
RF
–
RF
60134 F01
RG
VREF
INVERTING:
SIGNAL GAIN = –RF/RG
OP AMP GAIN = 1 + RF/RG
STABLE IF 1 + RF/RG ≥ 5
NONINVERTING:
SIGNAL GAIN = 1 + RF/RG
OP AMP GAIN = 1 + RF/RG
STABLE IF 1 + RF/RG ≥ 5
UNITY-GAIN:
DO NOT USE
Figure 1. Use LT6013 and LT6014 in a Gain of 5 or Greater
10k
10k
10k
+
VIN
VOUT
2.5k
1nF
–
–
VIN
VOUT
3k
1nF
+
60134 F02
UNITY GAIN FOLLOWER
UNITY GAIN INVERTER
Figure 2. Stabilizing Op Amp for Unity Gain Operation
60134fb
12
LT6013/LT6014
U
W
U U
APPLICATIO S I FOR ATIO
Preserving Input Precision
Preserving the input accuracy of the LT6013 and LT6014
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 differentials 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 IB+ and IB– to be uncorrelated, as
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
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 – + 1V and V+ – 1.2V. Exceeding 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 4kTRS noise
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:
vn(TOTAL) = en2 + 4kTRS + (in RS )2
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.
60134fb
13
LT6013/LT6014
W
W
SI PLIFIED SCHE ATIC
(One Amplifier)
V+
R3
R4
R6
R5
Q7
Q18
Q6
Q8
RC1
Q5
Q4
Q3
D1
D2
+IN
Q1
Q2
OUT
D4
Q12
D5
Q14
Q17
C
B
A
–IN
C3
Q20
Q11
Q15
V–
D3
Q22
Q16
R1
500Ω
R2
500Ω
Q13
C2
Q21
B
A
Q19
C1
Q9
Q10
60134 SS
60134fb
14
LT6013/LT6014
U
PACKAGE DESCRIPTIO
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698)
R = 0.115
TYP
5
0.38 ± 0.10
8
0.675 ±0.05
3.5 ±0.05
1.65 ±0.05
2.15 ±0.05 (2 SIDES)
3.00 ±0.10
(4 SIDES)
1.65 ± 0.10
(2 SIDES)
PIN 1
TOP MARK
(NOTE 6)
PACKAGE
OUTLINE
(DD8) DFN 1203
0.75 ±0.05
0.200 REF
0.25 ± 0.05
4
0.25 ± 0.05
0.50
BSC
2.38 ±0.05
(2 SIDES)
1
0.50 BSC
0.00 – 0.05
2.38 ±0.10
(2 SIDES)
BOTTOM VIEW—EXPOSED PAD
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
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
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.189 – .197
(4.801 – 5.004)
NOTE 3
.045 ±.005
.050 BSC
.245
MIN
8
.160 ±.005
.030 ±.005
TYP
7
6
5
.053 – .069
(1.346 – 1.752)
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
1
2
3
4
RECOMMENDED SOLDER PAD LAYOUT
NOTE:
1. DIMENSIONS IN
INCHES
(MILLIMETERS)
2. DRAWING NOT TO SCALE
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
.010 – .020
× 45°
(0.254 – 0.508)
.008 – .010
(0.203 – 0.254)
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
SO8 0303
60134fb
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.
15
LT6013/LT6014
U
TYPICAL APPLICATIO
Low Power Hall Sensor Amplifier
VS
HALL ELEMENT
ASAHI-KASEI
HW-108A (RANK D)
www.asahi-kasei.co.jp
1µF
VS
4
LT1790-1.25
1, 2
3
6
400Ω
×4
+
100k
1%
2
+
–
49.9k
10k
OFFSET
VS
ADJUST
7.87k
1%
1
1/2 LT6014
2
1
8
+
499Ω
0.1µF
VOUT
4
3
499Ω
LT1782
49.9k
–
VS = 3V TO 18V
IS = ~600µA
VOUT = ~40mV/mT
6
26.7k
1%
–
7
1/2 LT6014
5
+
–
4
60134 TA02
Precision Micropower Photodiode Amplifier
C1
20pF
R1
100k
V S+
IPHOTODIODE
GAIN: AZ = 100kΩ =
VOUT
IPHOTODIODE
10% TO 90% RISE TIME: tr = 3.2µs
BANDWIDTH: BW = 110kHz
–
880nm IR
PHOTODIODE
λ
OPTO-DIODE CORP
ODD-45W
LT6013
CD
170pF
+
VS
–
VOUT
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
LT1884/LT1885
Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps CLOAD Up to 1000pF
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
60134fb
16
Linear Technology Corporation
LT/LT 0305 REV B • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2004