LINER LT1057 Dual and quad, jfet input precision high speed op amp Datasheet

LT1057/LT1058
Dual and Quad, JFET Input
Precision High Speed Op Amps
FEATURES
DESCRIPTION
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The LT®1057 is a matched JFET input dual op amp in
the industry standard 8-pin configuration, featuring a
combination of outstanding high speed and precision
specifications. It replaces all the popular bipolar and JFET
input dual op amps. In particular, the LT1057 upgrades the
performance of systems using the LF412A and OP-215
JFET input duals.
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14V/μs Slew Rate: 10V/μs Min
5MHz Gain-Bandwidth Product
Fast Settling Time: 1.3μs to 0.02%
150μV Offset Voltage (LT1057): 450μV Max
180μV Offset Voltage (LT1058): 600μV Max
2μV/°C VOS Drift: 7μV/°C Max
50pA Bias Current at 70°C
Low Voltage Noise:
13nV/√Hz at 1kHz
26nV/√Hz at 10Hz
The LT1058 is the lowest offset quad JFET input operational
amplifier in the standard 14-pin configuration. It offers
significant accuracy improvement over presently available
JFET input quad operational amplifiers. The LT1058 can
replace four single precision JFET input op amps, while
saving board space, power dissipation and cost.
APPLICATIONS
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Precision, High Speed Instrumentation
Fast, Precision Sample-and-Hold
Logarithmic Amplifiers
D/A Output Amplifiers
Photodiode Amplifiers
Voltage-to-Frequency Converters
Frequency-to-Voltage Converters
Both the LT1057 and LT1058 are available in the plastic
PDIP package and the surface mount SO package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Current Output, High Speed, High Input Impedance
Instrumentation Amplifier
3
2
25
+
1/4
LT1058
1
–
7.5k
4.7k
7.5k
6
9.1k
5
–
1/4
LT1058
V1
12
–
1/4
LT1058
14
4.7k
7.5k
+
7
RX
IOUT
+
500Ω*
13
IOUT = 2(V1 – V2)
RX
8
+
10
–
9
1/4
LT1058
VS = p15V
TA = 25oC
20
PERCENT OF UNITS
V2
Distribution of Offset Voltage
(All Packages, LT1057 and LT1058)
LT1057: 610 OP AMPS
LT1058: 520 OP AMPS
1130 OP AMPS
TESTED
15
10
5
6.8k
0
–1.0
1k**
–0.6
0.6
–0.2 0 0.2
INPUT OFFSET VOLTAGE (mV)
1.0
10578 TA01b
*GAIN ADJUST
**COMMON MODE REJECTION ADJUST
BANDWIDTH z 2MHz
10578 TA01
10578fc
1
LT1057/LT1058
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage ........................................................±20V
Differential Input Voltage.........................................±40V
Input Voltage...........................................................±20V
Output Short-Circuit Duration .......................... Indefinite
Storage Temperature Range...................–65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
Operating Temperature Range
LT1057AM/LT1057M/
LT1058AM/LT1058M (OBSOLETE) .....–55°C to 125°C
LT1057AC/LT1057C/LT1057S
LT1058AC/LT1058C/LT1058S ................... 0°C to 70°C
LT1057I ......................................... –40°C ≤ TA ≤ 85°C
PACKAGE/ORDER INFORMATION
TOP VIEW
16 NC
OUT A 1
NC 2
15 NC
– IN A 2
OUT A 3
14 V+
+IN A 3
– IN A 4
–
A
+
+IN A 5
B
V– 6
–
+
NC 7
13 OUT B
V+ 4
12 – IN B
+IN B 5
11 +IN B
– IN B 6
10 NC
OUT B 7
NC 8
9
–
A
+
+
–B
D
C
–
+
–
+
NC 1
SW PACKAGE
16-LEAD PLASTIC (WIDE) SO
16 OUT D
+IN A 1
8
–IN A
15 – IN D
V– 2
7
OUT A
14 +IN D
+IN B 3
6
V+
13 V–
–IN B 4
5
OUT B
12 +IN C
9
NC
7 OUTPUT B
OUTPUT A 1
–IN A
2
+IN A
3
V+
4
+IN B
5
–IN B
6
OUTPUT B
7
14 OUTPUT D
–
A
+
– 13
D
+ 12
–IN D
+IN D
11 V–
+
–B
C
+ +
–
–IN C
8
OUTPUT C
N14 PACKAGE
14-LEAD PDIP
TJMAX = 125°C, θJA = 130°C/W
–
6 –IN B
5 +IN B
4
V
– (CASE)
H PACKAGE 8-LEAD METAL CAN
ORDER PART
NUMBER
ORDER PART
NUMBER
LT1058ACN
LT1058CN
LT1057ACN8
LT1057CN8
TOP VIEW
OUTPUT 1
–IN A 2
+IN A 3
10 +IN C
9
LT1057AMH
LT1057MH
LT1057ACH
LT1057CH
B
+IN A 3
LT1058SW
LT1058ISW
–
+
OUTPUT A
1
–IN A 2
ORDER PART
NUMBER
TOP VIEW
ORDER PART
NUMBER
8
A
LT1057SW
LT1057ISW
LT1058AMJ
LT1058MJ
LT1058ACJ
LT1058CJ
1057
1057I
TOP VIEW
V+
TJMAX =150°C, θJA =90°C/W
ORDER PART
NUMBER
S8 PART MARKING
Please note that the LT1057S8/LT1057IS8 standard surface mount pinout differs from that of the LT1057 standard CERDIP/PDIP packages.
SW PACKAGE
16-LEAD PLASTIC (WIDE) SO
TJMAX = 150°C, θJA = 90°C/W
LT1057S8
LT1057IS8
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 200°C/W
11 –IN C
10 OUT C
NC 8
NC
ORDER PART
NUMBER
TOP VIEW
TOP VIEW
LT1057ACJ8
LT1057CJ8
LT1057AMJ8
LT1057MJ8
J14 PACKAGE 14-LEAD CERDIP
TJMAX = 150°C, θJA = 100°C/W
V– 4
–
A
+
B
–
+
8
V+
7
OUTPUT B
6
– IN B
5
+ IN B
N8 PACKAGE
8-LEAD PDIP
TJMAX = 125°C, θJA = 130°C/W
J8 PACKAGE 8-LEAD CERDIP
TJMAX = 150°C, θJA = 100°C/W
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
10578fc
2
LT1057/LT1058
ELECTRICAL CHARACTERISTICS
VS = ±15V, TA = 25°C, VCM = 0V unless otherwise noted. (Note 2)
LT1057AM/LT1058AM
LT1057AC/LT1058AC
SYMBOL PARAMETER
VOS
Input Offset Voltage
CONDITIONS
MIN
LT1057
LT1057 (S8 Package)
LT1058
TYP
MAX
150
450
180
600
LT1057M/LT1058M
LT1057C/LT1058C
MIN
TYP
MAX
UNITS
200
220
250
800
1200
1000
μV
μV
μV
lOS
Input Offset Current
Fully Warmed Up
3
40
4
50
pA
lB
Input Bias Current
Fully Warmed Up
±5
±50
±7
±75
pA
Input Resistance
Differential
Common Mode VCM = –11V to 8V
Common Mode VCM = 8V to 11V
Input Capacitance
1012
1012
1011
1012
1012
1011
Ω
Ω
Ω
4
4
pF
en
Input Noise Voltage
0.1Hz to 10Hz
en
Input Noise Voltage Density
fO = 10Hz
fO = 1kHz (Note 3)
26
13
22
1.5
4
in
Input Noise Current Density
fO = 10Hz, 1kHz (Note 4)
AVOL
Large-Signal Voltage Gain
VO = ±10V, RL = 2k
VO = ±10V, RL = 1k
LT1057
LT1058
Input Voltage Range
2.1
2.5
μVP-P
μVP-P
28
14
24
nV/√Hz
nV/√Hz
1.8
6
fA/√Hz
150
120
350
250
100
80
300
220
V/mV
V/mV
±10.5
14.3
–11.5
±10.5
14.3
–11.5
V
V
86
84
100
98
82
80
98
96
dB
dB
CMRR
Common Mode Rejection Ratio
,
PSRR
Power Supply Rejection Ratio
VS = ±10V to ±18V
88
103
86
102
dB
VOUT
Output Voltage Swing
RL = 2k
±12
±13
±12
±13
V
SR
Slew Rate
10
14
8
13
V/μs
GBW
Gain-Bandwidth Product
f = 1MHz (Note 6)
3.5
5
3
5
MHz
IS
Supply Current Per Amplifier
Channel Separation
LT1057
LT1058
2.0
2.4
1.6
DC to 5kHz, VIN = ±10V
2.5
1.7
132
2.8
130
mA
dB
(LT1057/LT1058 SW Package Only), VS = ±15V, TA = 25°C, VCM = 0V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
VOS
Input Offset Voltage
LT1057
LT1058
lOS
Input Offset Current
lB
Input Bias Current
Input Resistance –Differential
–Common Mode
MIN
TYP
MAX
0.3
0.35
2
2.5
mV
Fully Warmed Up
5
50
pA
Fully Warmed Up
±10
±100
pA
0.4
0.4
0.05
TΩ
VCM = –11V to 8V
VCM = 8V to 11V
4
pF
Input Capacitance
en
Input Noise Voltage
0.1Hz to 10Hz
en
Input Noise Voltage Density
fO = 10Hz
fO = 1kHz
LT1057
LT1058
UNITS
2.1
2.5
μVP-P
26
13
nV/√Hz
10578fc
3
LT1057/LT1058
ELECTRICAL CHARACTERISTICS
unless otherwise noted.
(LT1057/LT1058 SW Package Only), VS = ±15V, TA = 25°C, VCM = 0V
SYMBOL
PARAMETER
CONDITIONS
in
Input Noise Current Density
fO = 10Hz, 1kHz
AVOL
Large-Signal Voltage Gain
VO = ±10V
MIN
RL = 2k
RL = 1k
Input Voltage Range
LT1057
LT1058
TYP
MAX
UNITS
1.8
fA/√Hz
100
50
300
220
V/mV
±10.5
14.3
–11.5
V
82
80
98
98
dB
CMRR
Common Mode Rejection Ratio
VCM = ±15V
PSRR
Power Supply Rejection Ratio
VS = ±10V to ±18V
86
102
dB
VOUT
Output Voltage Swing
RL = 2k
±12
±13
V
SR
Slew Rate
8
13
V/μs
GBW
Gain-Bandwidth Product
3
5
MHz
IS
Supply Current Per Amplifier
f = 1MHz (Note 6)
1.7
DC to 5kHz, VIN = ±10V
Channel Separation
2.8
130
mA
dB
The l denotes the specifications which apply over the temperature range of 0°C ≤ TA ≤ 70°C or –40°C ≤ TA ≤ 85°C (LT1057IS8),
otherwise specifications are TA = 25°C. VS = ±15V, VCM = 0V, unless noted.
LT1057AC
LT1058AC
SYMBOL PARAMETER
VOS
Input Offset Voltage
Average Temperature
Coefficient of Input
(Offset Voltage)
CONDITIONS
MIN
LT1057C
LT1058C
TYP
MAX
MIN
TYP
MAX
UNITS
330
500
400
400
1400
2300
1900
1800
μV
μV
μV
μV
2.3
4
4
4.5
3
5
12
16
16
16
15
22
μV/°C
μV/°C
μV/°C
μV/°C
μV/°C
μV/°C
LT1057
LT1057IS8
LT1057S8
LT1058
l
l
l
l
250
800
300
1200
LT1057 H/J8 Package
N8 Package
LT1057S8 (Note 5)
LT1057IS8 (Note 5)
LT1058 J Package (Note 5)
N Package (Note 5)
l
l
l
l
l
l
1.8
3
7
10
2.5
4
10
15
18
150
20
35
250
600
pA
±50
±250
±60
±100
±350
±900
pA
IOS
lnput Offset Current
Warmed Up, TA = 70°C
LT1057IS8
l
IB
Input Bias Current
Warmed Up, TA = 70°C
LT1057IS8
l
AVOL
Large-Signal Voltage Gain
VO = ±10V, RL = 2k
l
70
220
50
200
V/mV
CMRR
Common Mode Rejection Ratio
VCM = ±10.4V
l
85
98
80
96
dB
PSRR
Power Supply Rejection Ratio
VS = ±10V to ±18V
l
87
102
84
100
dB
VOUT
Output Voltage Swing
RL = 2k
l
±12
±12.8
±12
±12.8
V
IS
l
Supply Current Per Amplifier
TA = 70°C
2.8
14
3.2
1.5
mA
mA
10578fc
4
LT1057/LT1058
ELECTRICAL CHARACTERISTICS
(LT1057/LT1058 SW Package Only). The l denotes specifications which
apply over the temperature range of VS = ±15V, VCM = 0V, 0°C ≤ TA ≤ 70°C (LT1057SW, LT1058SW) or –40°C ≤ TA ≤ 85°C
(LT1057ISW, LT1058ISW), unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
VOS
Input Offset Voltage
LT1057
LT1058S
LT1058IS
MIN
Average Temperature Coefficient of
Input Offset Voltage
TYP
MAX
l
l
l
0.5
0.6
0.7
2.5
3.0
4.0
l
5
UNITS
mV
μV/°C
lOS
Input Offset Current
Warmed Up, TA = 70°C
Warmed Up, TA = 85°C
20
35
250
400
pA
lB
Input Bias Current
Warmed Up, TA = 70°C
Warmed Up, TA = 85°C
±60
±100
±400
±700
pA
A VOL
Large-Signal Voltage Gain
VO = ±10V, RL = 2k
LT1057
LT1058
l
l
50
40
200
200
mV
CMRR
Common Mode Rejection Ratio
VCM = ±10.5V
LT1057
LT1058
l
l
80
78
96
96
dB
PSRR
Power Supply Rejection Ratio
VS = ±10V to ±18V
LT1057
LT1058
l
l
84
82
100
100
dB
VOUT
Output Voltage Swing
RL = 2k
l
±12
±12.8
V
The l denotes the specifications which apply over the temperature range of –55°C ≤ TA ≤ 125°C, VS = ±15V, VCM = 0V,
unless otherwise noted.
LT1057AM
LT1058AM
SYMBOL PARAMETER
TYP
MAX
TYP
MAX
UNITS
Input Offset Voltage
LT1057
LT1058
l
l
300
380
1100
1600
400
550
2000
2500
μV
μV
Average Temperature Coefficient
of Input Offset Voltage
LT1057
LT1058 (Note 5)
l
l
2.0
2.5
7
10
2.5
3
12
15
μV/°C
μV/°C
IOS
lnput Offset Current
Warmed Up, TA = 125°C
0.15
2
0.2
3
nA
IB
Input Bias Current
Warmed Up, TA = 125°C
±0.6
±4.5
±0.7
±6
nA
AVOL
Large-Signal Voltage Gain
VO = ±10V, RL = 2k
l
40
120
30
110
V/mV
CMRR
Common Mode Rejection Ratio
VCM = ±10.4V
l
84
97
80
95
dB
VOS
CONDITIONS
MIN
LT1057M
LT1058M
MIN
PSRR
Power Supply Rejection Ratio
VS = ±10V to ±17V
l
86
100
83
98
dB
VOUT
Output Voltage Swing
RL = 2k
l
±12
±12.7
±12
±12.6
V
IS
Supply Current Per Amplifier
TA = 125°C
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Typical parameters are defined as the 60% yield of distributions of
individual amplifiers; (i.e., out of 100 LT1058s or, 100 LT1057s, typically
240 op amps, or 120 for the LT1057, will be better than the indicated
specification).
Note 3: This parameter is tested on a sample basis only.
1.25
1.9
1.3
2.2
mA
Note 4: Current noise is calculated from the formula:
in = (2qlb)1/2
where q = 1.6 • 10 –19 coulomb. The noise of source resistors up to 1G
swamps the contribution of current noise.
Note 5: This parameter is not 100% tested.
Note 6: Gain-bandwidth product is not tested. It is guaranteed by design
and by inference from the slew rate measurement.
10578fc
5
LT1057/LT1058
TYPICAL PERFORMANCE CHARACTERISTICS
30
OFFSET CURRENT
10
25
75
100
50
AMBIENT TEMPERATURE (°C)
0
1.2
120
1.0
100
TA = 125°C
0.8
TA = 70°C
60
0.4
40
0.2
20
TA = 25°C
0
–5
0
–10
5
10
COMMON MODE INPUT VOLTAGE (V)
120
LT1057J: 130 OP AMPS
LT1058J: 136 OP AMPS
368 OP AMPS
VS = p15V
100
NUMBER OF UNITS
NUMBER OF UNITS
70
60
40
32
80
70
60
60
16
2
4 5
40
65
31
Voltage Noise vs Frequency
VS = p15V
TA = 25°C
30
20
10
0
–10
–20
–30
–40
–50
0
1
3
2
TIME (MONTHS)
4
5
10578 G06
Voltage Gain vs Temperature
1000
VS = p15V
TA = 25°C
VS = p15V
TA = 25°C
5
10578 G03
0.1Hz to 10Hz Noise
RL = 2k
VOLTAGE GAIN (V/mV)
NOISE VOLTAGE (1μV/DIV)
RMS VOLTAGE NOISE DENSITY (nV/•Hz)
1
3
4
2
TIME AFTER POWER ON (MINUTES)
10578 G05
1000
20
0
40
27
10578 G04
30
LT1057 H PACKAGE
LT1057 J PACKAGE
5 3
4
0
3
6
9
–12 –9 –6 –3
0
12
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (μV/°C)
2 1
50
LT1057 N, LT1058 J PACKAGE
20
0
11
9
0
3
6
9
–12 –9 –6 –3
0
12
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (μV/°C)
70
40
50
1 UNIT EACH AT
–19, –16, –13
14, 16μV/°C
22
20
4
LT1058 N PACKAGE
Long-Term Drift of
Representative Units
44
24
20
60
15
LT1057N: 180 OP AMPS
LT1058N: 176 OP AMPS
356 OP AMPS
96
80
80
Distribution of Offset Voltage
Drift with Temperature
(Plastic N Package)
112 LT1057H: 102 OP AMPS
100
VS = p 15V
TA = 25°C
10578 G02
Distribution of Offset Voltage Drift
with Temperature
(H and J Package)
VS = p15V
0
–20
10578 G01
120
80
0.6
–0.2
–15
125
140
100
OFFSET VOLTAGE CHANGE (μV)
BIAS CURRENT
INPUT BIAS CURRENT, TA = 125°C (nA)
100
VS = p15V
1.4
INPUT BIAS CURRENT, TA = 25°C TO 70°C (pA)
VS = p15V
VCM = 0V
WARMED UP
300
3
Warm-Up Drift
160
1.6
1000
INPUT BIAS AND OFFSET CURRENT (pA)
Input Bias Current Over
the Common-Mode Range
CHANGE IN OFFSET VOLTAGE (μV)
Input Bias and Offset Currents
vs Temperature
VS = p15V
V0 = p10V
300
RL = 1k
100
30
1/f CORNER = 28Hz
10
3
10
30
100 300 1000 3000 10000
FREQUENCY (Hz)
10578 G07
0
2
6
4
TIME (SECONDS)
8
10
10578 G08
10
–75
–25
25
75
TEMPERATURE (°C)
125
10578 G09
10578fc
6
LT1057/LT1058
TYPICAL PERFORMANCE CHARACTERISTICS
Slew Rate, Gain-Bandwidth
Product vs Temperature
30
Undistorted Output Swing vs
Frequency
10
VS = p15V
SLEW RATE (V/μs)
5V/DIV
6
GBW
4
SLEW RISE
2
10
10578 G10
0.5μs/DIV
AV = +1
CL = 100pF
20
0
–50 –25
50
25
75
0
TEMPERATURE (°C)
100
GAIN BANDWIDTH PRODUCT (MHz)
8
SLEW FALL
30
PEAK-TO-PEAK OUTPUT SWING (V)
Large-Signal Response
VS = p15V
TA = 25°C
24
18
12
6
0
100k
125
1M
FREQUENCY (Hz)
10578 G12
10578 G11
Small-Signal Response
Gain, Phase Shift vs Frequency
Capacitive Load Handling
80
100
140
140
60
GAIN
PHASE
160
20
AV = +1
CL = 100pF
VS = p15V
0 TA = 25°C
CL = 10pF
–20
10 100
1
10578 G13
60
OVERSHOOT (%)
GAIN (dB)
20mV/DIV
80
PHASE SHIFT (DEGREES)
120
PHASE MARGIN = 58°
40
0.2μs/DIV
VS = p15V
TA = 25°C
70
120
100
50
AV = –1
40
AV = +1
30
20
AV = 10
10
0
180
1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
10
100
1000
CAPACITIVE LOAD (pF)
Settling Time
Channel Separation vs Frequency
0.5mV
5
FROM LEFT TO RIGHT:
SETTLING TIME TO 10mV, 5mV, 2mV,
1mV, 0.5mV
0
0.5mV
–5
10mV
–10
VS = p15V
TA = 25°C
0
1
2
3
SETTLING TIME (μs)
10578 G16
140
LIMITED BY
THERMAL
INTERACTION
AT DC = 132dB
120
RS = 10Ω
RS = 1k
LIMITED BY
PIN-TO-PIN
CAPACITANCE
100
VS = p15V
TA = 25°C
VIN = 20VP-P TO 5kHz
RL = 2k
80
60
Output Impedance vs Frequency
100
OUTPUT IMPEDANCE (Ω)
10mV
CHANNEL SEPARATION (dB)
OUTPUT VOLTAGE SWING FROM 0V (V)
160
1
10
100
1k
10k
FREQUENCY (Hz)
10000
10578 G15
10578 G14
10
10M
VS = p15V
TA = 25°C
AV = 100
10
AV = 10
1
AV = 1
100k
1M
10578 G17
0.1
1k
10k
100k
FREQUENCY (Hz)
10M
10578 G18
10578fc
7
LT1057/LT1058
TYPICAL PERFORMANCE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency
60
40
120
14
COMMON MODE RANGE (V)
80
CMRR (dB)
15
VS = p15V
TA = 25°C
100
Common Mode and Power Supply
Rejections vs Temperature
20
VS = p10V TO p17V FOR PSRR
VS = p15V, VCM = p10.5V FOR CMRR
13
12
CMRR, PSRR (dB)
120
Common Mode Range
vs Temperature
11
p10
–11
–12
110
PSRR
CMRR
100
–13
–14
10
100
1k
10k 100k
FREQUENCY (Hz)
1M
VS = p15V
–15
50
–50
0
TEMPERATURE (°C)
10M
10578 G19
–25
10578 G21
Supply Current
vs Temperature
140
Short-Circuit Current vs Time
(One Output Shorted to Ground)
50
3
SUPPLY CURRENT PER AMPLIFIER (mA)
TA = 25°C
120
100
POSITIVE
SUPPLY
80
NEGATIVE
SUPPLY
60
40
20
0
10
100
100k
10k
1k
FREQUENCY (Hz)
1M
10M
40
2
VS = p15V
VS = p10V
1
VS = p15V
TA = –55°C
30
20
TA = 25°C
10
TA = 125°C
0
TA = 125°C
–10
TA = 25°C
–20
–30
TA = –55°C
–40
0
–50 –25
50
25
75
0
TEMPERATURE (°C)
10578 G22
125
25
75
TEMPERATURE (°C)
10578 G20
Power Supply Rejection Ratio
vs Frequency
POWER SUPPLY REJECTION RATIO (dB)
90
100
SHORT-CIRCUIT CURRENT (mA)
0
100
–50
125
2
0
1
3
TIME FROM OUTPUT SHORT TO GROUND (MINUTES)
10578 G23
10578 G24
APPLICATIONS INFORMATION
The LT1057 may be inserted directly in LF353, LF412,
LF442, TL072, TL082 and OP-215 sockets. The LT1058
plugs into LF347, LF444, TL074 and TL084 sockets. Of
course, all standard dual and quad bipolar op amps can
also be replaced by these devices.
with RS and RF in the kilohm range, this pole can create
excess phase shift and even oscillation. A small capacitor (CF) in parallel with RF eliminates this problem. With
RS (CS + CIN) = RF CF, the effect of the feedback pole is
completely removed.
CF
High Speed Operation
When the feedback around the op amp is resistive (RF)
a pole will be created with RF, the source resistance and
capacitance (RS , CS), and the amplifier input capacitance
(CIN ≈ 4pF). In low closed loop gain configurations and
RF
–
CIN
RS
CS
OUTPUT
+
10578 F01
10578fc
8
LT1057/LT1058
APPLICATIONS INFORMATION
Settling time is measured in a test circuit which can be
found in the LT1055/LT1056 data sheet and in Application
Note 10.
Achieving Picoampere/Microvolt Performance
In order to realize the picoampere/microvolt level accuracy
of the LT1057/LT1058, proper care must be exercised. For
example, leakage currents in circuitry external to the op
amp can significantly degrade performance. High quality
insulation should be used (e.g., TeflonTM, Kel-F); cleaning
of all insulating surfaces to remove fluxes and other residues will probably be required. Surface coating may be
necessary to provide a moisture barrier in high humidity
environments.
Board leakage can be minimized by encircling the input
circuitry with a guard ring operated at a potential close to
that of the inputs; in inverting configurations, the guard
ring should be tied to ground, in noninverting connections,
to the inverting input. Guarding both sides of the printed
circuit board is required. Bulk leakage reduction depends
on the guard ring width.
The LT1057/LT1058 have the lowest offset voltage of any
dual and quad JFET input op amps available today. However,
the offset voltage and its drift with time and temperature are
still not as good as on the best bipolar amplifiers (because
the transconductance of FETs is considerably lower than
that of bipolar transistors). Conversely, this lower transconductance is the main cause of the significantly faster
speed performance of FET input op amps.
Teflon is a trademark of DuPont.
(A) ±16V Sine Wave Input
Offset voltage also changes somewhat with temperature
cycling. The AM grades show a typical 40μV hysteresis
(50μV on the M grades) when cycled over the –55°C to
125°C temperature range. Temperature cycling from 0°C to
70°C has a negligible (less than 20μV) hysteresis effect.
The offset voltage and drift performance are also affected
by packaging. In the plastic N package, the molding compound is in direct contact with the chip, exerting pressure
on the surface. While NPN input transistors are largely
unaffected by this pressure, JFET device drift is degraded.
Consequently for best drift performance, as shown in the
Typical Performance Characteristics distribution plots, the
J or H packages are recommended.
In applications where speed and picoampere bias currents
are not necessary, Linear Technology offers the bipolar
input, pin compatible LT1013 and LT1014 dual and quad
op amps. These devices have significantly better DC
specifications than any JFET input device.
Phase Reversal Protection
Most industry standard JFET input single, dual and quad
op amps (e.g., LF156, LF351, LF353, LF411, LF412,
OP-15, OP-16, OP-215, TL084) exhibit phase reversal at
the output when the negative common mode limit at the
input is exceeded (i.e., below –12V with ±15V supplies).
The photos below show a ±16V sine wave input (A), the
response of an LF412A in the unity gain follower mode
(B), and the response of the LT1057/LT1058 (C).
The phase reversal of photo (B) can cause lock-up in servo
systems. The LT1057/LT1058 does not phase-reverse due
to a unique phase reversal protection circuit.
(B) LF412A Output
(C) LT1057/LT1058 Output
All Photos 5V/Div Vertical Scale, 50μs/Div Horizontal Scale
10578fc
9
LT1057/LT1058
TYPICAL APPLICATIONS
Low Noise, Wideband, Gain = 100 Amplifier with High Input Impedance
4.3k
470Ω
–
2.4k
1/4
LT1058
7.5k
500Ω
+
4.3k
2.4k
–
470Ω
1/4
LT1058
–
OUTPUT
+
1/4
LT1058
+
INPUT
4.3k
470Ω
2.4k
–3dB BANDWIDTH = 350kHZ
GAIN-BANDWIDTH PRODUCT = 35MHz
WIDEBAND NOISE = 13nV/•Hz = 7.5nV/•Hz REFERRED TO INPUT
•3
RMS NOISE DC TO FULL BANDWIDTH = 7μV
–
1/4
LT1058
+
10578 TA02
Wideband, High Input Impedance, Gain = 1000 Amplifier
1k
4.7k
1k
4.7k
–
–
1/4
LT1058
INPUT
1/4
LT1058
+
1/4
LT1058
+
+
1/4
LT1058
+
–
OUTPUT
–
4.7k
4.7k
1k
1k
100Ω
–3dB BANDWIDTH = 400kHz
GAIN-BANDWIDTH PRODUCT = 400MHz
WIDEBAND NOISE = 13nV/•Hz REFERRED TO INPUT
10578 TA03
Low Distortion, Crystal Stabilized Oscillator
130Ω
CRYSTAL
20kHz
NT CUT
COMMON MODE
SUPPRESSION
–
1/2
LT1057
100k
–
0.01μF
100Ω
15pF
+
#327
LAMP
1VRMS OUT
20kHz
0.005%
DISTORTION
OSCILLATOR
1/2
LT1057
+
10578 TA04
10
10578fc
LT1057/LT1058
TYPICAL APPLICATIONS
Fast, Precision Bridge Amplifier
–
330pF
10k
1/2
LT1057
+
10k
1k
–
330pF
RLOAD
1/2
LT1057
LT1010
LT1010
+
INPUT
SLEW RATE = 14V/μs
OUTPUT CURRENT TO LOAD = 150mA
LOAD CAPACITANCE: UP TO 1μF
10578 TA05
Analog Divider
80.6k*
20k
1μF
LTC1043
7
–5V
6
LT1004
1.2V
12
5V
LTC1043
1k
8
+
B INPUT
5
1μF
–
1/2
LT1057
OUTPUT = A
B
+
2
–5V
0.001
POLYSTYRENE
11
13
1μF
75k*
14
16
–
A INPUT
1/2
LT1057
+
30pF
22k
330k
2N2907
1μF
* 1% FILM
–5V
10578 TA06
10578fc
11
LT1057/LT1058
TYPICAL APPLICATIONS
Bipolar Input (AC) V/F Converter
LTC1043
1k
–5V
6
LT1004
2.5V
2
5
0.1μF
16
18
1M*
15
3
1M*
0.01
POLYSTYRENE
1/4
LT1058
1μF
INPUT
p1V
+
–
2N3906
+
5V
36.5k*
1M*
–
10k
DATA
OUTPUT
0kHz TO 1kHz
1/4
LT1058
–
1/4
LT1058
1M*
10k
+
22k
150pF
10k
–5V
0.1μF
–
1/4
LT1058
*1% FILM
MATCH 1M RESISTORS TO 0.05%
SIGN
BIT
+
10578 TA07
12-Bit A/D Converter
10k
0.001μF
–
CLOCK
1/4
LT1058
14
–
100k*
2
1/4
LT1058
+
1
10k
4
3
74C74
5
10k
2k
5V
0.01μF
EIN
+
FLIP-FLOP
15V
INTEGRATOR
BOUT
6
10k
7
–5V
+
180pF
6.8k
1/4
LT1058
68pF
10k
10k
2N3906
–15V
4
10k
OUTPUT
GATE
16
LTC1043
CURRENT
SWITCH
15
820Ω
18
–15V
3
1/4
LT1058
2N4393
–
A
DATA OUTPUT = OUT
BOUT
*VISHAY S-102 RESISTOR
LEVEL
SHIFT
1k
+
17
–15V
AOUT
–
15V
OUT
LT1021 IN
10V
NC
GND
95k*
10k
–15V
10578 TA08
10578fc
12
LT1057/LT1058
TYPICAL APPLICATIONS
Instrumentation Amplifier with Shield Driver
3
+
10k
1k
1
1/4
LT1058
2
–
RF
9.1k
GUARD
RG
1k
+
+
1/4
LT1058
8
INPUT
–
15V
5
10
9
–
1/4
LT1058
6
RG
1k
4
+
–
7
OUTPUT
11
–15V
GUARD
13
12
RF
9.1k
–
1/4
LT1058
GAIN = 10(1+RF/RG) z 100
IB = 5pA
RIN = 10127
BW = 350kHz
10k
14
1k
+
10578 TA09
100dB Range Logarithmic Photodiode Amplifier
6 Q4
4
10
5
2k
11
1M
Q5
1M
FULL-SCALE
750k* TRIM
12
50k
DARK
TRIM
50k*
500pF
–
IP
1/2
LT1057
0.01μF
+
–
1/2
LT1057
0.033μF
EOUT
+
LT1021-10V
10k*
–
15V
IN
OUT
1
3k
2
LM301A
10k*
3
Q2
+
2k
33Ω
15
14
Q1
7
Q3
13
9
15V
= HP-5082-4204 PIN PHOTODIODE.
Q1–Q5 = CA3096.
CONNECT SUBSTRATE OF CA3096
ARRAY TO Q4’s EMITTER.
*1% RESISTOR
100dB RANGE LOGARITHMIC PHOTODIODE AMPLIFIER
8
LIGHT (900μM)
RESPONSE DATA
DIODE CURRENT
CIRCUIT OUTPUT
1MW
100μW
10μW
1μW
100nW
10nW
350μA
35μA
3.5μA
350nA
35nA
3.5nA
10.0V
7.85V
5.70V
3.55V
1.40V
–0.75V
10578 TA10
10578fc
13
LT1057/LT1058
PACKAGE DESCRIPTION
H Package
8-Lead TO-5 Metal Can (.200 Inch PCD)
(Reference LTC DWG # 05-08-1320)
.335 – .370
(8.509 – 9.398)
DIA
.305 – .335
(7.747 – 8.509)
.027 – .045
(0.686 – 1.143)
PIN 1
45°TYP
.040
(1.016)
MAX
.028 – .034
(0.711 – 0.864)
.200
(5.080)
TYP
.050
(1.270)
MAX
SEATING
PLANE
.165 – .185
(4.191 – 4.699)
GAUGE
PLANE
.010 – .045*
(0.254 – 1.143)
.110 – .160
(2.794 – 4.064)
INSULATING
STANDOFF
REFERENCE
PLANE
.500 – .750
(12.700 – 19.050)
.016 – .021**
(0.406 – 0.533)
*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND THE SEATING PLANE
.016 – .024
**FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS
(0.406 – 0.610) H8(TO-5) 0.200 PCD 0801
J8 Package
8-Lead CERDIP (Narrow .300 Inch, Hermetic)
(Reference LTC DWG # 05-08-1110)
.300 BSC
(7.62 BSC)
.008 – .018
(0.203 – 0.457)
CORNER LEADS OPTION
(4 PLCS)
0° – 15°
.015 – .060
(0.381 – 1.524)
.023 – .045
(0.584 – 1.143)
HALF LEAD
OPTION
.045 – .068
(1.143 – 1.650)
FULL LEAD
OPTION
NOTE: LEAD DIMENSIONS APPLY TO SOLDER
DIP/PLATE OR TIN PLATE LEADS
.405
(10.287)
MAX
.005
(0.127)
MIN
.200
(5.080)
MAX
8
.014 – .026
(0.360 – 0.660)
.100
(2.54)
BSC
5
.025
(0.635)
RAD TYP
.220 – .310
(5.588 – 7.874)
1
.045 – .065
(1.143 – 1.651)
6
7
2
3
4
.125
3.175
MIN
J8 0801
J Package
14-Lead CERDIP (Narrow .300 Inch, Hermetic)
(Reference LTC DWG # 05-08-1110)
.200
(5.080)
MAX
.300 BSC
(7.62 BSC)
.015 – .060
(0.381 – 1.524)
.008 – .018
(0.203 – 0.457)
NOTE: LEAD DIMENSIONS APPLY
TO SOLDER DIP/PLATE OR TIN
PLATE LEADS
.005
(0.127)
MIN
.785
(19.939)
MAX
14
13
12
11
10
9
8
0° – 15°
.045 – .065
(1.143 – 1.651)
.014 – .026
(0.360 – 0.660)
.100
(2.54)
BSC
.025
(0.635)
.125 RAD TYP
(3.175)
MIN
.220 – .310
(5.588 – 7.874)
1
2
3
4
5
6
7
J14 0801
OBSOLETE PACKAGES
10578fc
14
LT1057/LT1058
PACKAGE DESCRIPTION
8 Package
8-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
.300 – .325
(7.620 – 8.255)
8
.008 – .015
(0.203 – 0.381)
(
+.035
.325 –.015
+0.889
8.255
–0.381
7
6
5
.065
(1.651)
TYP
.255 ± .015*
(6.477 ± 0.381)
)
1
2
.130 ± .005
(3.302 ± 0.127)
.045 – .065
(1.143 – 1.651)
.400*
(10.160)
MAX
.100
(2.54)
BSC
4
3
.120
(3.048) .020
MIN
(0.508)
MIN
.018 ± .003
NOTE:
1. DIMENSIONS ARE
(0.457 ± 0.076)
N8 1002
INCHES
MILLIMETERS
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
N Package
14-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
.770*
(19.558)
MAX
.300 – .325
(7.620 – 8.255)
14
(
8.255
+0.889
–0.381
11
12
10
9
8
.255 ± .015*
(6.477 ± 0.381)
.008 – .015
(0.203 – 0.381)
+.035
.325 –.015
13
.130 ± .005
(3.302 ± 0.127)
)
1
3
2
5
4
6
.045 – .065
(1.143 – 1.651)
.020
(0.508)
MIN
.065
(1.651)
TYP
.005
(0.125) .100
MIN (2.54)
BSC
.120
(3.048)
MIN
7
NOTE:
1. DIMENSIONS ARE
.018 ± .003
(0.457 ± 0.076)
INCHES
MILLIMETERS
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
N14 1002
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
8
7
6
5
N
N
.245
MIN
.160 ±.005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
1
2
3
N/2
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
N/2
.030 ±.005
TYP
RECOMMENDED SOLDER PAD LAYOUT
1
NOTE:
INCHES
1. DIMENSIONS IN
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
2
3
4
.014 – .019
(0.355 – 0.483)
TYP
.010 – .020
× 45°
(0.254 – 0.508)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
.050
(1.270)
BSC
SO8 0502
10578fc
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
LT1057/LT1058
TYPICAL APPLICATION
SW Package
16-Lead Plastic Small Outline (Wide .300 Inch)
(Reference LTC DWG # 05-08-1620)
.050 BSC .045 ±.005
.030 ±.005
TYP
.398 – .413
(10.109 – 10.490)
NOTE 4
16
N
15
14
13
12
11
10
9
N
.325 ±.005
.420
MIN
.394 – .419
(10.007 – 10.643)
NOTE 3
1
2
3
N/2
N/2
RECOMMENDED SOLDER PAD LAYOUT
1
.005
(0.127)
RAD MIN
.009 – .013
(0.229 – 0.330)
.291 – .299
(7.391 – 7.595)
NOTE 4
.010 – .029 × 45°
(0.254 – 0.737)
2
3
4
5
.093 – .104
(2.362 – 2.642)
6
7
8
.037 – .045
(0.940 – 1.143)
0° – 8° TYP
.050
(1.270)
BSC
NOTE 3
.004 – .012
(0.102 – 0.305)
.014 – .019
(0.356 – 0.482)
TYP
.016 – .050
(0.406 – 1.270)
NOTE:
1. DIMENSIONS IN
INCHES
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
S16 (WIDE) 0502
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1055/6
Precision, High Speed, JFET Input
Operational Amplifiers
12V/μs Slew Rate, 5.5MHz Bandwidth
LT1880
SOT-23, Rail-to-Rail Output, Picoamp Input
Precision Op Amps
150μV Max Offset Voltage, 900pA Max Input Bias Current
LT1881/2
Dual and Quad Rail-to-Rail Output, Picoamp Input
Precision Op Amps
50μV Max Offset Voltage, 200pA Max Input Bias Current
LT1884/5
Dual/Quad Rail-to-Rail Output, Picoamp Input
Precision Op Amps
50μV Max Offset Voltage, 400pA Max Input Bias Current
LT6010
135μA, 14nV/rtHz, Rail-to-Rail Output, Precision
Low Power Op Amp with Shutdown
35μV Max Offset Voltage, 300pA Max Input Bias Current
LT6011/12
Dual/Quad 135μA, 14nV/rtHz, Rail-to-Rail Output
Precision Low Power Op Amp
60μV Max Offset Voltage, 300pA Max Input Bias Current
LTC6078/9
Micropower Precision, Dual/Quad CMOS
Rail-to-Rail Input/Output Amplifiers
Maximum Offset Drift: 0.7μV/°C
LTC6241/2
Dual/Quad 18MHz, Low Noise, Rail-to-Rail
CMOS Op Amps
O.1Hz to 10Hz Noise: 550n Vpp
10578fc
16 Linear Technology Corporation
LT 0108 REV C • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 1989