LTC1150
±15V
Zero-Drift
Operational Amplifier with
Internal Capacitors
DESCRIPTIO
The LTC
®
1150 is a high-voltage, high-performance
zero-drift operational amplifier. The two sample-and-hold
capacitors usually required externally by other chopper
amplifiers are integrated on-chip. Further, LTC’s propri-
etary high-voltage CMOS structures allow the LTC1150 to
operate at up to 32V total supply voltage.
The LTC1150 has an offset voltage of 0.5µV, drift of
0.01µV/°C, 0.1Hz to 10Hz input noise voltage of 1.8µV
P-P
and a typical voltage gain of 180dB. The slew rate of 3V/µs
and a gain bandwidth product of 2.5MHz are achieved with
0.8mA of supply current. Overload recovery times from
positive and negative saturation conditions are 3ms and
20ms, respectively.
For applications demanding low power consumption,
Pin 1 can be used to program the supply current. Pin 5 is
an optional AC-coupled clock input, useful for
synchronization.
The LTC1150 is available in standard 8-lead, plastic dual-
in-line package, as well as an 8-lead SO package. The
LTC1150 can be a plug-in replacement for most standard
bipolar op amps with significant improvement in DC
performance.
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
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High Voltage Operation:
±16V
No External Components Required
Maximum Offset Voltage: 10µV
Maximum Offset Voltage Drift: 0.05µV/°C
Low Noise 1.8µV
P-P
(0.1Hz to 10Hz)
Minimum Voltage Gain: 135dB
Minimum PSRR: 120dB
Minimum CMRR: 110dB
Low Supply Current: 0.8mA
Single Supply Operation: 4.75V to 32V
Input Common Mode Range Includes Ground
200µA Supply Current with Pin 1 Grounded
Typical Overload Recovery Time 20ms
APPLICATIO S
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Strain Gauge Amplifiers
Electronic Scales
Medical Instrumentation
Thermocouple Amplifiers
High Resolution Data Acquisition
TYPICAL APPLICATIO
1k
Single Supply Instrumentation Amplifier
160
1M
V
+
1M
V
+
2
7
6
1k
2
VOLTAGE NOISE DENSITY (nV√Hz)
140
120
100
80
60
40
20
0
10
100
1k
10k
FREQUENCY (Hz)
100k
LTC1150 •TA02
–
+
LTC1150
–V
IN
3
4
–
+
7
6
V
OUT
LTC1150
V
IN
3
4
GAIN = 1000V/V
OUTPUT OFFSET
≤
5mV
TOTAL SUPPLY CURRENT
DECREASES TO 400µA
WHEN BOTH PIN 1s ARE
GROUNDED
LTC1150 •TA01
U
U
U
Noise Spectrum
1150fb
1
LTC1150
ABSOLUTE
AXI U
RATI GS
Total Supply Voltage (V
+
to V
–
) ............................... 32V
Input Voltage (Note 2) .............. (V
+
0.3V) to (V
–
–0.3V)
Output Short Circuit Duration .......................... Indefinite
Burn-In Voltage ....................................................... 32V
PACKAGE/ORDER I FOR ATIO
TOP VIEW
I
SUPPLY
1
–IN 2
+IN 3
V
–
4
8 CLOCK OUT
7 V
+
6 OUT
EXT CLOCK
5
IN
ORDER PART
NUMBER
LTC1150CN8
I
SUPPLY
1
–IN 2
+IN 3
V
–
4
N8 PACKAGE
8-LEAD PDIP
T
JMAX
= 110°C,
θ
JA
= 130°C/W
J8 PACKAGE
8-LEAD CERDIP
OBSOLETE PACKAGE
Consider the N8 or S8 Package as an Alternate Source
LTC1150MJ8
LTC1150CJ8
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
PARAMETER
Input Offset Voltage
Average Input Offset Drift
Long Term Offset Voltage Drift
Input Offset Current
CONDITIONS
(Note 3)
(Note 3)
The
●
denotes the specifications which apply over the full operating
temperature range otherwise specifications are at T
A
= 25°C. V
S
=
±15V,
Pin 1 = Open, unless otherwise noted.
LTC1150M
MIN
TYP
MAX
±0.5
●
Input Bias Current
●
Input Noise Voltage
Input Noise Current
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
R
S
= 100Ω, 0.1Hz to 10Hz, TC2
R
S
= 100Ω, 0.1Hz to 1Hz, TC2
f = 10Hz (Note 4)
V
CM
= V
–
to 12V
V
S
=
±2.375V
to
±16V
R
L
= 10kΩ, V
OUT
=
±10V
R
L
= 10kΩ
R
L
= 10kΩ
R
L
= 100kΩ
●
●
●
●
2
U
U
W
W W
U
W
(Note 1)
Operating Temperature Range
LTC1150M
(OBSOLETE).....................–55°C
to 125°C
LTC1150C .......................................... – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
TOP VIEW
8
CLOCK OUT
V
+
OUT
EXT CLOCK
IN
ORDER PART
NUMBER
LTC1150CS8
7
6
5
–
+
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 110°C,
θ
JA
= 200°C/W
S8 PART
MARKING
1150
LTC1150C
MIN
TYP
MAX
±0.5
±0.01
50
±20
±10
1.8
0.6
1.8
110
120
135
±13.5
10.5/
–13.5
130
145
180
±14.5
±10
±0.05
±200
±0.5
±100
±1.0
UNITS
µV
µV/°C
nV/√mo
pA
nA
pA
nA
µV
P-P
fA/√Hz
dB
dB
dB
V
±10
±0.05
±60
±1.5
±50
±2.5
±0.01
50
±20
●
±10
1.8
0.6
1.8
110
120
135
±13.5
10.5/
–13.5
±14.95
130
145
180
±14.5
±14.95
1150fb
LTC1150
ELECTRICAL CHARACTERISTICS
PARAMETER
Slew Rate
Gain Bandwidth Product
Supply Current
No Load
No Load, Pin 1 = V
–
No Load
CONDITIONS
R
L
= 10kΩ, C
L
= 50pF
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
=
±15V,
Pin 1 = Open, unless otherwise noted.
LTC1150M
MIN
TYP
MAX
3
2.5
0.8
0.2
●
LTC1150C
MIN
TYP
MAX
3
2.5
UNITS
V/µs
MHz
1.5
2
0.8
0.2
550
1.5
2
mA
Internal Sampling Frequency
550
Hz
The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
S
= 5V, Pin 1 = Open, unless otherwise noted.
PARAMETER
Input Offset Voltage
Average Input Offset Drift
Long Term Offset Voltage Drift
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Current
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
R
S
= 100Ω, 0.1Hz to 10Hz, TC2
R
S
= 100Ω, 0.1Hz to 1Hz, TC2
f = 10Hz (Note 4)
V
CM
= 0V to 2.7V
V
S
=
±2.375V
to
±16V
R
L
= 10kΩ, V
OUT
= 0.3V to 4.5V
●
●
●
CONDITIONS
(Note 3)
(Note 3)
●
LTC1150M
MIN
TYP
MAX
±0.5
50
±10
±5
2.0
0.7
1.3
106
120
115
130
145
180
0.15 to 4.85
0.02 to 4.97
1.5
1.8
0.4
●
LTC1150C
MIN
TYP
MAX
±0.05
±0.01
50
±10
±5
2.0
0.7
1.3
106
120
115
130
145
180
0.15 to 4.85
0.02 to 4.97
1.5
1.8
±10
±0.05
±60
±30
UNITS
µV
µV/°C
µV/√mo
pA
pA
µV
P-P
fA/√Hz
dB
dB
dB
V
V/µs
MHz
±10
±0.01 ±0.05
±60
±30
Maximum Output Voltage Swing R
L
= 10kΩ
R
L
= 100kΩ
Slew Rate
Gain Bandwidth Product
Supply Current
Internal Sampling Frequency
Note 1:
Absolute Maximum Ratings are those values beyond which life of
the device may be impaired.
Note 2:
Connecting any terminal to voltages greater than V
+
or less than
V
–
may cause destructive latch-up. It is recommended that no sources
operating from external supplies be applied prior to power-up of the
LTC1150.
No Load
R
L
= 10kΩ, C
L
= 50pF
1
1.5
0.4
300
1
1.5
mA
Hz
300
Note 3:
These parameters are guaranteed by design. Thermocouple effects
preclude measurement of these voltage levels in high-speed automatic test
systems. V
OS
is measured to a limit determined by test equipment
capability.
Note 4:
Current Noise is calculated from the formula:
I
N
=
√(2q
• I
b
)
where q = 1.6 • 10
–19
Coulomb.
1150fb
3
LTC1150
TEST CIRCUITS
Offset Voltage Test Circuit
1M
V
+
7
6
OUTPUT
R
L
10Ω
100k
0.1µF
DC-10Hz Noise Test Circuit
475k
1k
2
–
+
LTC1150
3
4
V
–
–
LTC1150
158k
316k
475k
–
LT1012
0.1µF
0.1µF
+
+
TO X-Y
RECORDER
LTC1150 •TC01
FOR 1Hz NOISE BW, INCREASE ALL THE CAPACITORS BY A FACTOR OF 10
LTC1150 •TC02
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage
1000
900
SUPPLY CURRENT (µA)
T
A
= 25°C
800
700
600
500
400
300
200
4
8
12 16 20 24 28 32 36
TOTAL SUPPLY VOLTAGE, V
+
TO V
–
(V)
LTC1150 • TPC01
SUPPLY CURRENT (µA)
GAIN (dB)
Output Short-Circuit Current vs
Supply Voltage
SHORT-CIRCIUT OUTPUT CURRENT, I
OUT
(mA)
6
4
2
0
–3
–6
–9
–12
–15
4
V
OUT
= V
+
I
SINK
PIN 1 = V
–
V
OUT
= V
I
SOURCE
–
T
A
= 25°C
PIN 1 = OPEN
SUPPLY CURRENT (µA)
GAIN (dB)
PIN 1 = V
–
PIN 1 = OPEN
0
8
12 16 20 24 28 32 36
TOTAL SUPPLY VOLTAGE, V
+
TO V
–
(V)
LTC1150 • TPC04
4
U W
Supply Current vs Temperature
1400
1200
1000
800
600
400
200
–55
V
S
=
±
15V
Gain/Phase vs Frequency
120
100
80
60
40
20
0
–20
V
S
=
±
15V
C
L
= 100pF
PHASE
GAIN
100
60
80
PHASE (DEGREES)
120
140
160
180
200
1k
10k
100k
FREQUENCY (Hz)
1M
220
10M
95
5
35
65
–25
AMBIENT TEMPERATURE (°C)
125
–40
100
LTC1150 • TPC02
LTC1150 • TPC03
Supply Current vs R
SET
1200
1000
800
600
400
200
V
S
=
±
15V
T
A
= 25°C
120
100
80
Gain/Phase vs Frequency
V
S
=
±
15V
C
L
= 100pF
PIN 1 = –15V
PHASE
60
GAIN
40
20
0
–20
140
160
180
200
1k
10k
100k
FREQUENCY (Hz)
1M
220
10M
120
60
80
100
PHASE (DEGREES)
1k
10k
100k
R
SET
, PIN 1 TO V
–
(Ω)
1M
–40
100
LTC1150 • TPC05
LTC1150 • TPC06
1150fb
LTC1150
TYPICAL PERFOR A CE CHARACTERISTICS
Input Bias Current vs Supply
Voltage
12
10
T
A
= 25°C
V
CM
= OV
INPUT BIAS CURRENT (pA)
OUTPUT VOLTAGE (Vp-p)
8
6
4
2
0
0
±
2
GAIN (dB)
±
4
±
6
±
8
±
10
±
12
±
14
±
16
SUPPLY VOLTAGE (V)
LTC1150 • TPC07
Input Bias Current vs Input
Common Mode Voltage
40
30
INPUT BIAS CURRENT (pA)
V
S
=
±
15V
T
A
= 25°C
–I
B
20
10
0
–10
+I
B
–20
–30
–40
–15
5
10
–10
–5
0
INPUT COMMON MODE VOLTAGE (V)
LTC1150 • TPC10
INPUT BIAS CURRENT (pA)
–100
COMMON MODE RANGE (V)
CMRR vs Frequency
160
140
120
CMRR (dB)
80
60
40
20
0
1
10
100
1k
FREQUENCY (Hz)
10k
100k
PSRR (dB)
100
100
80
60
40
20
0
1
10
NEGATIVE SUPPLY,
PIN 1 = OPEN
POSITIVE SUPPLY,
PIN 1 = V
–
OFFSET VOLTAGE (µV)
LTC1150 • TPC13
U W
15
Undistorted Output Swing vs
Frequency
30
25
20
15
10
5
0
100
120
100
Gain/Phase vs Frequency
V
S
=
±2.5V
C
L
= 100pF
PHASE
GAIN
60
80
100
PIN 1 = V
–
R
L
= 10k
80
60
40
20
0
–20
PHASE (DEGREES)
120
140
160
180
200
1k
10k
100k
FREQUENCY (Hz)
1M
220
10M
PIN 1 = FLOATING
R
L
= 100k
1k
10k
100k
FREQUENCY (Hz)
1M
–40
100
LTC1150 • TPC08
LTC1150 • TPC09
Input Bias Current vs Temperature
–1000
V
CM
= 0
V
S
=
±
15V
Common Mode Input Range vs
Supply Voltage
15
T
A
= 25°C
10
5
0
–5
–10
–I
B
–10
+I
B
–1
–50 –25
0
25
50
75
100
125
–15
0
±2.5
TEMPERATURE (°C)
LTC1150 • TPC11
±5
±7.5 ±10 ±12.5
SUPPLY VOLTAGE (V)
±15
LTC1150 • TPC12
PSRR vs Frequency
160
POSITIVE SUPPLY, PIN 1 = OPEN
140
120
Offset Voltage vs
Sampling Frequency
10
V
A
=
±
15V
T
A
= 25°C
PIN 1 = V
–
8
6
4
PIN 1 = OPEN
NEGATIVE SUPPLY, PIN 1 = V
–
2
0
100
1k
FREQUENCY (Hz)
10k
100k
0
2k
1k
SAMPLING FREQUENCY, f
S
(Hz)
3k
LTC1150 • TPC14
LTC1150 • TPC15
1150fb
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