TI LT1037A Low-noise, high-speed, precision operational amplifier Datasheet

LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
•
•
•
DW PACKAGE
(TOP VIEW)
Maximum Equivalent Input Noise Voltage:
3.8 nV/√Hz at 1 kHz
4.5 nV/√Hz at 10 Hz
Low Peak-to-Peak Equivalent Input Noise
Voltage: 60 nV Typ From 0.1 Hz to 10 Hz
Slew Rate (LT1037 and LT1037A):
11 V/µs Min
NC
NC
VIO TRIM
IN –
IN +
VCC –
NC
NC
LT1007A and LT1037A Specifications:
•
•
•
•
High Voltage Amplification:
7 V/µV Min, RL = 2 kΩ
3 V/ µV Min, RL = 600 Ω
Low Input Offset Voltage:
25 µV Max
Low Input Offset Voltage Temperature
Coefficient: 0.6 µV/°C Max
Common-Mode Rejection Ratio: 117 dB Min
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
NC
NC
VIO TRIM
VCC+
OUT
NC
NC
NC
JG OR P PACKAGE
(TOP VIEW)
VIO TRIM
IN –
IN +
VCC –
description
1
8
2
7
3
6
4
5
VIO TRIM
VCC +
OUT
NC
NC – No internal connection
These monolithic operational amplifiers feature
extremely low-noise performance and out
standing precision and speed specifications.The typical differential voltage amplification (at TA = 25°C) of these
devices is an extremely high 20 V/µV driving a 2-kΩ load to ± 12 V and 12 V/ µV driving, a 600 -Ω load to ± 10V.
In the design, processing, and testing of the device, particular attention has been paid to the optimization of the
entire distribution of several key parameters. Consequently, the specifications of even the lowest-cost grades
(the LT1007C and the LT1037C) have been greatly improved compared to equivalent grades of competing
amplifiers.
AVAILABLE OPTIONS
TA
0°C
to
70°C
70
C
C
– 55°C
to
125°C
125
C
VIO max
AT 25°C
PACKAGE
SMALL-OUTLINE
(DW)
CERAMIC DIP
(JG)
PLASTIC DIP
(P)
60 µV
LT1007CDW
—
LT1007CP
25 µV
—
—
LT1007ACP
60 µV
LT1037CDW
—
LT1037CP
25 µV
—
—
LT1037ACP
60 µV
—
LT1007MJG
LT1007MP
25 µV
—
LT1007AMJG
LT1007AMP
60 µV
—
LT1037MJG
LT1037MP
25 µV
—
LT1037AMJG
LT1037AMP
The DW packages are available taped and reeled. Add the suffix R to the device type,
(e.g.,LT1007CDWR).
Copyright  1993, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
VIO
TRIM
VCC +
450 A
3.4 kΩ
Q3
3.4 kΩ
Q4
Q8
Q28
1.2 kΩ
130 pF
17 kΩ
240 µA
750 µA
Q7
1.2 kΩ
17 kΩ
Q27
Q18
–
Q5
C1
Q9
20 Ω
Q17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Q6
Q19
Q10
Q26
750 Ω
Q20
Q1B
Q25
–
IN +
Q1A
Q2B
OUT
200 Ω
Q2A
20 Ω
Q13
80 pF
20 pF
Q30
IN –
Q22
Q11
Q23 –
–
Q29
Q12 Q15
Q16
240 µA
120 µA
200 Ω
6 kΩ
200 Ω
Q24
500
µA
6 kΩ
50 Ω
VCC –
–
C1 = 110 pF for LT1007
C1 = 12 pF for LT1037
All component values shown are nominal.
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
VIO
TRIM
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
2
schematic
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC + (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 V
Supply voltage, VCC – . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 22 V
Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC ±
Duration of output short circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unlimited
Differential input current (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25 mA
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range:
LT1007C, LT1007AC, LT1037C, LT1037AC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
LT1007M, LT1007AM, LT1037M, LT1037AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: DW and P packages . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG package . . . . . . . . . . . . . . . . . . . . 300°C
NOTES: 1. All voltage values, unless otherwise noted, are with respect to the midpoint between VCC + and VCC –.
2. The inputs are protected by back-to-back diodes. Current limiting resistors are not used in order to achieve low noise. Excessive input
current will flow if a differential input voltage in excess of approximately ± 0.7 V is applied between the inputs, unless some limiting
resistance is used.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25° C
POWER RATING
DERATING FACTOR
ABOVE TA = 25° C
TA = 70° C
POWER RATING
TA = 125° C
POWER RATING
DW
1025 mW
8.2 mW/ ° C
656 mW
N/A
JG
1050 mW
8.4 mW/ ° C
672 mW
210 mW
P
1000 mW
8 mW/ ° C
640 mW
200 mW
recommended operating conditions
C-SUFFIX
M-SUFFIX
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
Supply voltage, VCC +
4
15
22
4
15
22
V
Supply voltage, VCC –
–4
– 15
– 22
–4
– 15
– 22
V
Input voltage
voltage, VI
TA = 25 ° C
TA = full range
Operating free-air temperature, TA
± 11
± 10.5
0
POST OFFICE BOX 655303
± 11
• DALLAS, TEXAS 75265
V
± 10.3
70
– 55
V
125
°C
3
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
electrical characteristics, VCC± = ±15 V
PARAMETER
VIO
Input offset voltage
αVIO
Average temperature
coefficient of input
offset voltage
IIO
Input offset current
IIB
Input bias current
VOM
Peak output voltage
swing
AVD
Large signal
Large-signal
differential voltage
lifi i
amplification
TEST CONDITIONS
TA
LT1007C, LT1037C
MIN
TYP
25 ° C
See Note 3
20
LT1007AC, LT1037AC
MAX
MIN
60
TYP
MAX
10
25
0° C to 70° C
110
50
0°C to 70°C
1
0.6
25° C
12
0°C to 70°C
50
7
70
± 15
25° C
40
± 55
± 10
± 75
0°C to 70°C
25° C
± 12.5
± 13.5
± 13
± 13.8
RL= 600 Ω
25° C
± 10.5
± 12.5
± 11
± 12.5
0°C to 70°C
± 12
µV
µV/ ° C
nA
nA
V
± 12.5
RL ≥ 2 kΩ, VO = ± 12 V
25° C
5
20
7
20
RL ≥ 1 Ω, VO = ± 10 V
25° C
3.5
16
5
16
RL ≥ 600 Ω, VO = ± 10 V
25° C
2
12
3
12
V/ µV
GΩ
RL ≥ 2 kΩ, VO = ± 10 V
0°C to 70°C
2.5
4
RL ≥ 1 kΩ, VO = ± 10 V
0°C to 70°C
2
2.5
ri(CM)
Common-mode input
resistance
25° C
5
7
ro
Open-loop output
resistance
25° C
70
70
CMRR
Common-mode
rejection ratio
kSVR
Supply voltage
rejection ratio
PD
Power dissipation
VIC = ± 11 V
VIC = ± 10.5 V
VCC ± = ± 4 V to ± 18 V
VCC ± = ± 4.5 V to ±18 V
25° C
110
0°C to 70°C
106
25° C
106
0°C to 70°C
102
126
117
Ω
130
dB
114
126
110
130
dB
106
LT1007C, LT1007AC
25°C
80
140
80
120
LT1037C, LT1037AC
25°C
85
140
80
130
0°C to 70°C
160
NOTE 3: VIO measurements are performed by automatic test equipment approximately 0.5 seconds after application of power.
4
± 35
± 45
RL= 2 kΩ
RL= 2 kΩ
30
UNIT
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
144
mW
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
electrical characteristics, VCC± = ±15 V
PARAMETER
TEST CONDITIONS
TA
LT1007M,
LT1037M
MIN
25 ° C
VIO
Input offset voltage
αVIO
Average temperature
coefficient of input
offset voltage
IIO
Input offset current
– 55 ° C to 125 ° C
IIB
Input bias current
– 55 ° C to 125 ° C
VOM
Peak output voltage
swing
AVD
Large signal
Large-signal
differential voltage
amplification
lifi i
TYP
See Note 3
20
LT1007AM,
LT1037AM
MAX
MIN
60
MAX
10
25
– 55 ° C to 125 ° C
160
60
– 55 ° C to 125 ° C
1
0.6
25 ° C
12
50
7
85
25 ° C
± 15
± 55
± 10
± 95
25 ° C
± 12.5
± 13.5
± 13
± 13.8
25 ° C
± 10.5
± 12.5
± 11
± 12.5
± 12
± 35
± 60
RL = 600 Ω
– 55 ° C to 125 ° C
30
50
RL = 2 kΩ
RL = 2 kΩ
UNIT
TYP
µV
µV/ °C
nA
nA
V
± 12.5
RL ≥ 2 kΩ, VO = ± 12 V
25 ° C
5
20
7
20
RL ≥ 1 kΩ, VO = ± 10 V
25 ° C
3.5
16
5
16
12
3
12
V/ µV
25 ° C
2
RL ≥ 2 kΩ, VO = ± 10 V
– 55 ° C to 125 ° C
2
3
RL ≥ 1 kΩ, VO = ± 10 V
– 55 ° C to 125 ° C
1.5
2
RL ≥ 600 Ω, VO = ± 10 V
ri(CM)
Common-mode input
resistance
25 ° C
5
7
GΩ
ro
Open-loop output
resistance
25 ° C
70
70
Ω
CMRR
Common-mode
rejection ratio
kSVR
Supply
y voltage
g
rejection ratio
PD
Power dissipation
VIC = ± 11 V
VIC = ± 10.3 V
VCC ± = ± 4 V to ± 18 V
VCC ± = ± 4.5 V to ± 18 V
LT1007M, LT1007AM
LT1037M, LT1037AM
25 ° C
110
– 55 ° C to 125 ° C
104
25 ° C
106
– 55 ° C to 125 ° C
100
126
117
130
dB
112
126
110
130
dB
104
25 ° C
80
140
80
120
25 ° C
85
140
80
130
– 55 ° C to 125 ° C
170
mW
150
NOTE 3: VIO measurements are performed by automatic test equipment approximately 0.5 seconds after application of power.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
operating characteristics, VCC ± = ± 15 V, TA = 25 °C
PARAMETER
TEST CONDITIONS
RL ≥ 2 kΩ, AVD ≥ 1 (LT1007, LT1007A)
SR
Slew rate
VN(PP)
Peak-to-peak equivalent
input noise voltage
f = 0.1 Hz to 10 Hz,
See Note 4
Vn
Equivalent
q
input
noise voltage
In
Equivalent
input
q
noise current
GBW
Gain bandwidth product
roduct
RL ≥ 2 kΩ, AVD ≥ 5 (LT1037, LT1037A)
LT1007, LT1007A
LT1007, LT1007A
MIN
TYP
MIN
TYP
17
1.7
25
2.5
11
15
MAX
MAX
V/µs
0.06
0.13
0.06
0.13
f = 10 Hz
2.8
4.5
2.8
4.5
f = 1 kHz
2.5
3.8
2.5
3.8
f = 10 kHz, See Note 5
1.5
4
1.5
4
f = 1 kHz, See Note 5
0.4
0.6
0.4
0.6
f = 100 kHz
5
f = 10 kHz, AV ≥ 15
8
45
60
UNIT
µV
nV/√Hz
pA/√Hz
MHz
NOTES: 4. See the test circuit and frequency response curve for 0.1-Hz to 10-Hz noise (Figure 39) in the Applications Information section.
5. See the test circuit for current noise measurement (Figure 40) in the Applications Information section.
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS
table of graphs
FIGURE
VIO
Input offset voltage
vs Temperature
1
∆VIO
Change in input offset voltage
vs Time after power on
vs Time (long-term stability)
2
3
IIO
Input offset current
vs Temperature
4
Input bias current
vs Temperature
over common-mode range
5
6
Common-mode limit voltage
vs Free-air temperature
7
Maximum peak output voltage
swing
vs Load resistance
vs Frequency
8
9
Differential voltage amplification
vs
vs
vs
vs
vs
vs
at
10
11
12
13
14
15
16
VID
CMRR
Differential input voltage
vs Output voltage
16
Common-mode rejection ratio
vs Frequency
17
kSVR
Supply voltage rejection ratio
vs Frequency
18
SR
Slew rate
vs Free-air temperature (LT1007)
vs Free-air temperature (LT1037)
19
20
φ
Phase shift
vs Frequency (LT1007)
vs Frequency (LT1037)
11
12
φm
Phase margin
vs Free-air temperature (LT1007)
vs Free-air temperature (LT1037)
19
20
Vn
Equivalent input noise voltage
vs
vs
vs
vs
vs
21
22
23
24
25
In
Equivalent input noise current
Total noise
vs Frequency
vs Source resistance
26
27
GBW
Gain bandwidth product
vs Free-air Temperature (LT1007)
vs Free-air Temperature (LT1037)
19
20
IOS
ICC
Short-circuit output current
vs Time (from short to GND)
28
Supply current
vs Supply voltage
29
zo
Closed-loop output impedance
vs Frequency
30
Pulse response (LT1037)
Small-signal (CL = 15 pF)
Large-signal
31
32
Pulse response (LT1007)
Small-signal (CL = 15 pF)
Large-signal
33
34
IIB
VOM
AVD
POST OFFICE BOX 655303
Frequency
Frequency (LT1007)
Frequency (LT1037)
Temperature
Load resistance
Supply voltage
2 kΩ and 600 Ω
Free-air temperature
Time (0.01-Hz to 1-Hz noise)
Frequency
Bandwidth
Supply voltage
• DALLAS, TEXAS 75265
7
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS†
INPUT OFFSET VOLTAGE
OF REPRESENTATIVE UNITS
vs
FREE-AIR TEMPERATURE
VIO – Input Offset Voltage – Vµ V
V
IO
40
10
VCC ± = ± 15 V
LT1007, LT1037
30
20
10
0
LT1007A, LT1037A
– 10
ÁÁ
ÁÁ
– 20
– 40
– 25
0
25
50
75
100
8
6
4
ÁÁ
ÁÁ
LT1007, LT1037
– 30
– 50
– 50
VCC ± = ± 15 V
TA = 25°C
VVIO
µV
IO – Change in Input Offset Voltage – V
50
INPUT OFFSET VOLTAGE
vs
TIME AFTER POWER ON
DW, JG, or P Package
2
0
125
1
0
TA – Free-Air Temperature – ° C
2
INPUT OFFSET CURRENT
vs
TEMPERATURE
ÁÁ
ÁÁ
ÁÁ
– Input Offset Current – mA
VIIO
IO
VVIO
µV
IO – Change in Input Offset Voltage – V
10
5
0.2 µV/Month Trend Line
ÁÁ
ÁÁ
ÁÁ
–5
– 10
0.2 µV/Month Trend Line
0
2
4
6
8
10
60
VCC ± = ± 15 V
50
40
30
20
LT1007, LT1037
10
LT1007A, LT1037A
0
– 75
– 50
– 25
0
25
50
75
TA – Free-Air Temperature – ° C
t – Time – months
Figure 3
Figure 4
† Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
8
5
Figure 2
LONG TERM STABILITY OF
INPUT OFFSET VOLTAGE
FOR FOUR REPRESENTATIVE UNITS
ÁÁ
ÁÁ
4
Time After Power On – minutes
Figure 1
0
3
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
100
125
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS†
INPUT BIAS CURRENT
vs
FREE-AIR TEMPERATURE
INPUT BIAS CURRENT
vs
COMMON-MODE INPUT VOLTAGE
20
50
VCC ± = ± 15 V
15
Device With Positive
Input Current
IIIB
IB – Input Bias Current – nA
IIIB
IB – Input Bias Current – nA
40
30
20
LT1007M, LT1037M
10
– 50
– 25
0
25
50
75 100 125
TA – Free-Air Temperature –° C
5
ri(CM) = 20 V = 7 GΩ
3 nA
0
–5
–1 0
Device With Negative
Input Current
– 15
LT1007AM, LT1037AM
0
10
– 20
– 15
150
VCC ± = ± 15 V
TA = 25°C
– 10
–5
0
5
10
VIC – Common-Mode Input Voltage
Figure 5
Figure 6
COMMON-MODE INPUT VOLTAGE RANGE LIMITS
vs
FREE-AIR TEMPERATURE
PEAK OUTPUT VOLTAGE SWING
vs
LOAD RESISTANCE
15
–1
13.5
VCC + = 3 V to 20 V
–3
VOM
VOM – Output Voltage Swing – V
Common-Mode Voltage – V
(Referred to Power Supply Voltages)
VCC+
–2
Positive Limit
–4
4
VCC – = – 3 V to – 20 V
Negative Limit
1
VCC–
– 50
12
ÁÁÁÁÁ
ÁÁÁÁÁ
10.5
VCC ± = ± 15 V
TA = 25°C
Positive
Swing
9
Negative
Swing
7.5
6
ÁÁ
ÁÁ
3
2
15
4.5
3
1.5
– 25
0
25
50
75
100
TA – Free-Air Temperature – ° C
125
0
100
300
1k
3k
10 k
RL – Load Resistance – Ω
Figure 7
Figure 8
† Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
9
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS
DIFFERENTIAL VOLTAGE AMPLIFICATION
vs
FREQUENCY
180
28
AVD
A
VD – Differential Voltage Amplification – dB
VCC ± = ± 15 V
RL = 2 kΩ
TA = 25 ° C
160
24
140
20
120
100
16
LT1037
12
ÁÁ
ÁÁ
ÁÁ
LT1007
8
VCC ± = 25°C
TA = 25°C
4
0
1k
10 k
100 k
1M
f – Frequency – Hz
10 M
LT1037
LT1007
80
60
40
ÁÁ
ÁÁ
20
0
– 20
0.01
1
LT1007
LT1037
DIFFERENTIAL VOLTAGE AMPLIFICATION
AND PHASE SHIFT
vs
FREQUENCY
DIFFERENTIAL VOLTAGE AMPLIFICATION
AND PHASE SHIFT
vs
FREQUENCY
40
90°
35
100°
φ
30
150°
AVD
160°
5
0
–5
– 10
0.1
40
φ – Phase Shift
140°
15
ÁÁ
ÁÁ
ÁÁ
45
110°
130°
20
VCC ± = ± 15 V
CL = 100 pF
TA = 25°C
1
10
f – Frequency – MHz
φ
120°
35
130°
30
140°
25
150°
20
ÁÁ
ÁÁ
ÁÁ
15
170°
90°
VCC ± = ± 15 V
100°
CL = 100 pF
TA = 25°C
110°
50
120°
25
10
AVD
AV = 5
160°
170°
10
180°
190°
100
180°
5
0
0.1
Figure 11
10
100 M
Figure 10
AVD
A
VD – Differential Voltage Amplification – dB
AVD
A
VD – Differential Voltage Amplification – dB
Figure 9
100
10 k
1M
f – Frequency – Hz
190°
1
10
f – Frequency – MHz
Figure 12
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
100
φ – Phase Shift
VO(pp) – Peak-to-Peak Output Voltage Swing – V
VO(PP)
PEAK-TO-PEAK OUTPUT VOLTAGE SWING
vs
FREQUENCY
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS†
DIFFERNTIAL VOLTAGE AMPLIFICATION
vs
FREE-AIR TEMPERATURE
DIFFERNTIAL VOLTAGE AMPLIFICATION
vs
LOAD RESISTANCE
ÁÁ
ÁÁ
ÁÁ
25
RL = 2 kΩ
20
RL = 1 kΩ
15
RL = 600 Ω
10
VCC ± = ± 15 V
VO = ± 10 V
VO = ± 8 V for TA ≥ 100 ° C
RL = 600 Ω
5
0
– 50
– 25
VCC ± = ± 15 V
TA = 25°C
– Differential Voltage Amplification – dB
AAVD
VD
AAVD
VD – Differential Voltage Amplification – dB
25
0
25
50
75
100
TA – Free-Air Temperature – °C
125
20
15
10
ÁÁ
ÁÁ
ÁÁ
5
0
0.1
0.4
1
4
RL – Load Resistance – kΩ
Figure 13
Figure 14
DIFFERNTIAL VOLTAGE AMPLIFICATION
vs
SUPPLY VOLTAGE
DIFFERNTIAL INPUT VOLTAGE
vs
OUTPUT VOLTAGE
4
25
VCC ± = ± 15 V
TA = 25°C
RL = 2 kΩ
20
VVID
ID – Differential Input Voltage – V
AAVD
VD – Differential Amplification – dB
TA = 25°C
ÁÁ
ÁÁ
15
RL = 600 Ω
10
3
2
RL = 600 Ω
1
0
ÁÁ
ÁÁ
5
0
10
0
±5
± 10
± 15
± 20
± 25
RL = 2 kΩ
–1
–2
– 15
– 10
VCC ± – Supply Voltage – V
–5
0
5
10
15
VO – Output Voltage – V
Figure 15
Figure 16
† Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
11
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS†
COMMON-MODE REJECTION RATIO
vs
FREQUENCY
160
VCC = ± 15 V
VCM = ± 10 V
TA = 25°C
k SVR – Supply Voltage Rejection Ratio – dB
CMRR – Common-Mode Rejection Ratio – dB
140
SUPPLY VOLTAGE REJECTION RATIO
vs
FREQUENCY
120
100
LT1037
80
LT1007
104
105
106
120
100
107
Negative
Supply
80
60
ÁÁ
ÁÁ
60
40
103
TA = 25°C
140
Positive
Supply
40
20
0
1
10
f – Frequency – Hz
Figure 17
102
103 104 105
106
f – Frequency – Hz
107
108
Figure 18
LT1007
LT1037
SLEW RATE, PHASE MARGIN AND
GAIN BANDWIDTH PRODUCT
vs
FREE-AIR TEMPERATURE
SLEW RATE, PHASE MARGIN AND
GAIN BANDWIDTH PRODUCT
vs
FREE-AIR TEMPERATURE
(f = 100 kHz)
GBW
8
3
7
SR
VCC = ± 15 V
CL = 100 pF
– 25
0
25
50
75
100
TA – Free-Air Temperature – ° C
60
ÁÁ
ÁÁ
2
1
– 50
VCC = 15 V
CL = 100 pF
125
φm
50
60
(f = 100 kHz)
GBW
20
50
SR
15
10
– 50
– 25
Figure 19
0
25
50
75
100
TA – Free-Air Temperature – ° C
Figure 20
† Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
12
POST OFFICE BOX 655303
70
• DALLAS, TEXAS 75265
125
Gain Bandwidth Product
50
SR – Slew Rate – V/sµ s
SR – Slew Rate – V/sµ s
ÁÁ
ÁÁ
9
φm
m – Phase Margin
φm
60
Gain Bandwidth Product
φm
m – Phase Margin
70
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS†
EQUIVALENT INPUT NOISE VOLTAGE
OVER A 100-SECOND TIME PERIOD
5
VCC ± = ± 15 V
f = 0.01 Hz to 1 Hz
ÁÁÁ
ÁÁÁ
ÁÁÁ
4
V
Vn
nV/ Hz
n – Noise Voltage – 20 nV/Hz
nV/ Hz
Vn
V
n – Equivalent Input Noise Voltage – nV/Hz
ÁÁ
ÁÁ
ÁÁ
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREE-AIR TEMPERATURE
f = 10 Hz
3
f = 1kHz
2
1
0
– 50
– 25
0
25
50
75
100
TA – Free-Air Temperature – ° C
125
0
20
Figure 21
10
VCC = ± 15 V
TA = 25°C
30
10
Maximum
3
1/f Corner = 2 Hz
1
V
Vn
n – RMS Noise Voltage – µ V
Vn
V n – Equivalent Input Noise Voltage – nV/Hz
nV/ Hz
100
BROADBAND NOISE VOLTAGE
0.1 Hz TO INDICATED FREQUENCY
100
0.1
0.1
80
Figure 22
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREQUENCY
ÁÁ
ÁÁ
ÁÁ
40
60
t – Time – s
VCC ± = ± 15 V
TA = 25°C
1
0.1
Typical
10
100
f – Frequency – Hz
1000
0.01
0.1
Figure 23
1
10
B – Bandwidth – kHz
100
Figure 24
† Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
POST OFFICE BOX 655303
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13
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS†
ÁÁ
ÁÁ
ÁÁ
5
TA = 25°C
IInn – RMS Noise Current Density – ppA/Hz
A/ Hz
Vn
V n– RMS Voltage Noise Density – nV/Hz
nV/ Hz
ÁÁ
ÁÁ
ÁÁ
EQUIVALENT INPUT NOISE VOLTAGE
vs
SUPPLY VOLTAGE
4
f = 10 Hz
3
f = 1 kHz
2
1
0
0
±5
± 10
± 15
± 20
VCC ± – Supply Voltage – V
EQUIVALENT INPUT NOISE CURRENT
vs
FREQUENCY
10
VCC ± = ± 15 V
3
Maximum
1
0.3
0.1
10
± 25
100
1k
f – Frequency – Hz
Figure 25
ÁÁ
ÁÁ
ÁÁ
SHORT-CIRCUIT OUTPUT CURRENT
vs
ELAPSED TIME
50
VCC = ±15 V
TA = 25°C
R
R
40
IIOS
OS – Short Circuit Current – mA
V
Vn
nV/ Hz
n – Total Noise Voltage – nV/Hz
1000
RS = 2R
At 1 kHz
At 10 Hz
TA = – 55°C
30
TA = 25°C
20
TA = 125°C
10
VCC = ± 15 V
0
– 10
ÁÁÁ
ÁÁÁ
ÁÁÁ
10
Resistor
Noise
Only
1
0.1
10 k
Figure 26
TOTAL NOISE VOLTAGE
vs
SOURCE RESISTANCE
100
Typical
1/f Corner = 120 Hz
– 30
TA = 25°C
– 40
TA = – 55°C
– 50
1
10
RS – Source Resistance – kΩ
100
TA = 125°C
– 20
0
1
2
Figure 27
Figure 28
† Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
14
POST OFFICE BOX 655303
3
Time From Output Short to Ground – minutes
• DALLAS, TEXAS 75265
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS†
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
CLOSED-LOOP OUTPUT IMPEDANCE
vs
FREQUENCY
100
4
TA = 125°C
TA = 25°C
TA = – 55°C
2
ÁÁ
ÁÁ
10
zZo
o – Output Impedance – Ω
IICC
CC – Supply Current – mA
3
1
1
0.1
LT1007
AV = 1
0.01
0
±5
± 10
± 15
VCC ± – Supply Voltage – V
0
± 20
0.001
10
100
LT1037
AV = 5
VCC ± = ± 15 V
IO = 1 mA
TA = 25°C
1k
10 k
f – Frequency – Hz
Figure 29
100 k
1M
Figure 30
LT1037
LT1037
VOLTAGE-FOLLOWER
SMALL-SIGNAL PULSE RESPONSE
VOLTAGE-FOLLOWER
LARGE-SIGNAL PULSE RESPONSE
80
20
60
15
40
10
V
VO
O – Output Voltage – mV
VO – Output Voltage – mV
VO
LT1037
AV = 1000
LT1007
AV = 1000
20
0
ÁÁ
ÁÁ
VCC ± = ± 15 V
AV = 5
CL = 15 pF
TA = 25°C
– 40
– 60
5
0
ÁÁ
ÁÁ
– 20
VCC ± = ± 15 V
AV = 5
TA = 25°C
–5
– 10
– 15
– 80
– 20
0
200
400
600 800 1000 1200 1400 1600
t – Time – ns
0
1
Figure 31
2
3
4
5
t – Time – µs
6
7
8
Figure 32
† Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
15
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
TYPICAL CHARACTERISTICS
80
LT1007
VOLTAGE-FOLLOWER
LARGE-SIGNAL PULSE RESPONSE
8
VCC ± = ± 15 V
AV = 1
CL = 15 pF
TA = 25°C
40
20
0
ÁÁ
ÁÁ
4
2
0
ÁÁ
ÁÁ
– 20
– 40
– 60
– 80
VCC ± = ± 15 V
AV = – 1
TA = 25°C
6
VO – Output Voltage – mV
VO
60
VO – Output Voltage – mV
VO
LT1007
VOLTAGE-FOLLOWER
SMALL-SIGNAL PULSE RESPONSE
–2
–4
–6
0
0.5
1
1.5
2
2.5
t – Time – µs
3
3.5
4
–8
0
2
4
6
8
10
12
14
16
t – Time – µs
Figure 33
Figure 34
APPLICATION INFORMATION
general
The LT1007- and LT1037-series devices may be inserted directly into OP-07, OP-27, OP-37, and 5534 sockets
with or without removal of external-compensation or nulling components. In addition, the LT1007 and LT1037
may be fitted to µA741 sockets by removing or modifying external nulling components.
offset voltage adjustment
The input offset voltage and its change with temperature of the LT1007 and LT1037 are permanently trimmed
to a low level at wafer testing . However, if further adjustment of VIO is necessary, the use of a 10-kΩ nulling
potentiometer, as shown in Figure 35, will not degrade drift with temperature. Trimming to a value other than
zero creates a drift of VIO/300 µV/°C (e.g., if VIO is adjusted to 300 µV, the change in temperature coefficient
will be 1 µV/°C).
The adjustment range with a 10-kΩ potentiometer is approximately ± 2.5 mV. If a smaller adjustment range is
needed, the sensitivity and resolution of the nulling can be improved by using a smaller potentiometer in
conjunction with fixed resistors. The example in Figure 36 has an approximate null range of ± 200 µV.
offset voltage and drift
Unless proper care is exercised, thermocouple effects at the contacts to the input terminals, caused by
temperature gradients across dissimilar metals, can exceed the inherent temperature coefficient of the amplifier.
Air currents should be minimized, package leads should be short, input leads should be close together, and input
leads should be at the same temperature.
16
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
APPLICATION INFORMATION
1 kΩ
VCC +
10 kΩ
4.7 kΩ
VCC +
IN –
–
–
IN –
4.7 kΩ
OUT
IN +
+
+
IN +
OUT
4
VCC –
VCC –
Figure 35. Standard Adjustment
Figure 36. Improved Sensitivity
Adjustment
The circuit shown in Figure 37 can be used to measure offset voltage. In addition, with the supply voltages
increased to ± 20 V, it can be used as the burn-in configuration for the LT1007 and LT1037.
When RF ≤ 100 Ω and the input is driven with a fast large-signal pulse ( > 1 V), the output waveform will be as
shown in Figure 38.
During the fast-feedthrough-like portion of the output, the input protection diodes effectively short the output to
the input and a current, limited only by the output short-circuit protection, is drawn by the signal generator. When
RF is ≥ 500 Ω, the output is capable of handling the current requirements (IL ≤ 20 mA at 10 V), the amplifier stays
in its active mode, and a smooth transition occurs.
When RF is > 2 kΩ, a pole will be created with RF and the amplifier’s input capacitance, creating additional phase
shift and reducing the phase margin. A small capacitor (20 pF to 50 pF) in parallel with RF will eliminate this
problem.
50 kن
15 V
–
100 Ω
+
50 kΩ
RF
VO
–
Output
– 15 V
VO = 1000 VOS
2.8 V /µs
+
† Resistors must have low thermoelectric potential
Figure 37. Test Circuit for Offset
Voltage and Offset Voltage Drift With
Temperature
POST OFFICE BOX 655303
Figure 38. Pulse Operation
• DALLAS, TEXAS 75265
17
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
APPLICATION INFORMATION
noise testing
Figure 39 shows a test circuit for 0.1-Hz to 10-Hz peak-to-peak noise measurement of the LT1007 and LT1037.
The frequency response of this noise tester indicates that eeethe 0.1 Hz corner is defined by only one zero.
Because the time limit acts as an additional zero to eliminate noise contributions from the frequency band below
0.1 Hz, the test time to measure 0.1-Hz to 10-Hz noise should not exceed 10 seconds.
0.1 Hz to 10 Hz p-p NOISE TESTER
FREQUENCY RESPONSE
100
90
Gain – dB
80
70
60
50
40
30
0.01
0.1
1
Frequency – Hz
10
100
0.1 µF
100 kΩ
–
10 Ω
2 kΩ
†
+
+
Voltage Gain
= 50,000
4.7 µF
4.3 kΩ
22 µF
–
100 kΩ
2.2 µF
24.3 kΩ
0.1 µF
† Device under test
NOTE: All capacitor values are for non-polarized capacitors only.
Figure 39. 0.1-Hz To 10-Hz Noise Test Circuit
18
Scope
x1
RIN = 1 MΩ
LT1001
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
110 kΩ
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
APPLICATION INFORMATION
Special test precautions are required to measure the typical 60-nV peak-to-peak noise performance of the
LT1007 and LT1037:
1. The device should be warmed up for at least five minutes. As the operational amplifier warms up, the offset
voltage typically changes 3 µV, due to the chip temperature increasing 10°C to 20°C from the moment the
power supplies are turned on. In the 10-second measurement interval, these temperature-induced effects
can easily exceed tens of nanovolts.
2. The device must be well shielded from air currents to eliminate thermoelectric effects. In excess of a few
nanovolts, thermoelectric effects would invalidate the measurements.
3. Sudden motion in the vicinity of the device can produce a feedthrough effect that increases observed noise.
When measuring noise on a large number of units, a noise-voltage density test is recommended. A 10-Hz
noise-voltage density measurement will correlate well with a 0.1-Hz to 10-Hz peak-to-peak noise reading since
both results are determined by the white noise and the location of the 1/f corner frequency.
Figure 40 shows a circuit that measures noise current and presents the formula for calculating noise current.
10 kΩ
100 Ω
500 kΩ
nV) ] ń
+ [vn 1*M(130
W x 100
–
2
eno
+
500 kΩ
In
2 1 2
Figure 40. Noise Test Circuit
The LT1007 and LT1037 achieve low noise, in part, by operating the input stage at 120 µA versus the typical
10 µA for most other operational amplifiers. Voltage noise is directly proportional to the square root of the stage
current; therefore, the LT1007 and LT1037 noise current is relatively high. At low frequencies, the low 1/f
current-noise corner frequency (≈ 120 Hz) minimizes noise current to some extent.
In most practical applications, however, noise current will not limit system performance; this is illustrated in
Figure 27, where:
total noise = [(noise voltage)2(noise current x RS)2 + (resistor noise)2]1/2
Three regions can be identified as a function of source resistance:
(i)
RS ≤ 400 Ω
Voltage noise dominates in region (i)
(ii)
RS = 400 Ω to 50 kΩ at 1 kHz
RS = 400 Ω to 8 kΩ at 10 kHz
Resistor noise dominates in region (ii)
(iii)
RS > 50 Ω at 1 kHz
RS > 8 kΩ at 10 Hz
Current noise dominates in region (iii)
The LT1007 and LT1037 should not be used in region (iii) where total system noise is at least six times higher
than the noise voltage of the operational amplifier (i.e., the low-voltage noise specification is completely wasted).
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
19
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
APPLICATION INFORMATION
The sine wave generator application shown below, utilizes the low-noise and low-distortion characteristics of
the LT1037.
430 Ω
–
2
LT1037
#327 Lamp
+
1
2π RC
R =1591.5Ω ± 0.1 %
C = 0.1 µF ± 0.1 %
C
R
C
f
Output
+
3
6
R
TOTAL HARMONIC DISTORTION ≤ 0.0025%
NOISE ≤ 0.001%
AMPLITUDE = ± 8 V
OUTPUT FREQUENCY = 1.000 kHz FOR VALUES GIVEN ± 0.4%
Figure 41. Ultra-Pure 1-kHz Sine-Wave Generator
EQUIVALENT INPUT NOISE VOLTAGE
OVER A 10-SECOND PERIOD
340 kΩ
1%
Voltage Noise (20 nV/DIV)
365 Ω
1%
IN +
2
3
5
4
6
t – Time – s
7
8
9
10
Figure 42
+
3
1
20 kΩ
Trim
7
LT1037
0
20
15 kΩ
5%
15 V
2
–
f = 0.1 Hz to 10 Hz
6
Output
4
– 15 V
RN60C Film Resistors
The high gain and wide bandwidth of the LT1037 and (LT1007)
is useful in low-frequency high-closed-loop-gain amplifier
applications. A typical precision operational amplifier may have
an open loop gain of one million with 500 kHz bandwidth. As the
gain error plot shows, this device is capable of 0.1% amplifying
accuracy up to 0.3 Hz only. Even instrumentation range signals
can vary at a faster rate. The LT1037’s gain precision –
bandwidth product is 200 times higher, as shown.
Figure 43. Gain 1000 Amplifier With
0.01% Accuracy, DC to 5 Hz
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
APPLICATION INFORMATION
GAIN ERROR
vs
FREQUENCY
CLOSED LOOP GAIN = 1000
1
Typical
Precision
Operational
Amplifier
15 V
LT1007
Gain Error – %
0.1
365 Ω
1%
8
15 kΩ
1%
Output
7
3
IN +
10 MΩ
5%
+
LT1007
2
LT1037
–
4
0.01
–15 V
GAIN ERROR
0.001
0.1
LOOP GAIN
+ CLOSED
OPEN LOOP GAIN
1
10
f – Frequency – Hz
Positive feedback to one of the nulling terminals creates
approximately 5 µV of hysteresis. Output can sink 16 mA.
100
Figure 44.
340 kΩ 1%
20 kΩ 5%
Input offset voltage is typically changed less than 5 µV due to
the feedback.
Figure 45. Microvolt Comparator
With Hysteresis
10 kΩ
Trim
+
3
6
15 Ω
5%
100 kΩ
15 V
Output ± 10 V
RL
300 Ω
IN +
100 Ω
2
100 pF 3
47 kΩ
The addition of the LT1007 doubles the amplifier’s output drive
to ± 33 mA. Gain accuracy is 0.02%, slightly degraded
compared to above because of self heating of the LT1037 under
load.
Figure 46. Precision Amplifier Drives
300-Ω Load to ± 10 V
POST OFFICE BOX 655303
7
LT1037
+
–
LT1037
0.01 µF
7.8 kΩ
–
365 Ω 1%
6
LT1007
3
15 Ω
5%
+
2
–
2
0.033 µF
6
Output
4
– 15 V
All Resistors Metal Film
Mag Phono
Input
Figure 47. Phono Preamplifier
• DALLAS, TEXAS 75265
21
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
APPLICATION INFORMATION
0.01
4.99 kΩ
2
316 kΩ
–
100 kΩ
6
Output
LT1037
+
Tape Head
Input
3
All Resistors Metal Film
Figure 48. Tape Head Amplifier
15 V
+
10 µF
10 Ω
1 kΩ
100 µF
+
33 Ω
100 µF
2N2219A
+
Chopped Detector Output
267 Ω†
50 mA
3
+
100 µF
IR Radiation
Optical
Chopper
15 V
+
7
LT1007
392 Ω*
2
Photo-Conductive
Infra-Red
Detector
HgCdTe Type
Infra-Red Associates, Inc
–
6
4
– 15 V
Output
To Demodulator
392 Ω†
392 Ω†
13 Ω at 77°K
† 1% metal film
Figure 49. Infra-Red Detector Preamplifier
22
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
Synchronous
LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
APPLICATION INFORMATION
7.5 V
5 kΩ
3
2.5 V
LT1009
+
7
LT1007
2
–
6
4
–7.5 V
Reference Out
350 Ω
Bridge
15 V
3
30.1
kن
2
+
LT1007
3
–
4
–7.5 V
7
LT1007
10 kΩ
Zero
Trim
7.5 V
7
+
2
–
4
6
0 to 10 V
Output
1 µF
30.1 kن
–15 V
6
† RN60C Film Resistors
Gain
Trim
50 kΩ
499 Ω†
The LT1007 is capable of providing excitation current
directly to bias the 350-Ω bridge at 5 V. With only 5 V
across the bridge (as opposed to the usual 10 V) total
power dissipation and bridge warm-up drift is reduced.
The bridge output signal is halved, but the LT1007 can
amplify the reduced signal accurately.
Figure 50. Strain Gauge Signal Conditioner With Bridge Excitation
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