LTC2055HMS8#TRPBF [Linear]
LTC2055 - Dual Micropower Zero-Drift Operational Amplifiers; Package: MSOP; Pins: 8; Temperature Range: -40°C to 125°C;
| 型号： | LTC2055HMS8#TRPBF |
| 厂家： | 
Linear |
| 描述： | LTC2055 - Dual Micropower Zero-Drift Operational Amplifiers; Package: MSOP; Pins: 8; Temperature Range: -40°C to 125°C 放大器 光电二极管 |
| 文件： | 总16页 (文件大小：203K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC2054/LTC2055
Single/Dual Micropower
Zero-Drift Operational Amplifiers
DESCRIPTION
FEATURES
The LTC®2054/LTC2055 are low power, low noise, single/
dual, zero-drift operational amplifiers with an extended
temperature version (LTC2054MP) that has guaranteed
specifications from –55°C to 150°C. They are available
in TSOT-23 (ThinSOT™) and MS8 packages. For space
limited applications, the LTC2055 is also available in a
3mm × 3mm × 0.8mm dual fine pitch leadless package
(DFN). They operate from a single 2.7V minimum supply
and support 5V applications. The current consumption
is typically 150μA for the LTC2054 and 130μA/amp for
the LTC2055.
n
Supply Current 150μA (Max per Amplifier)
Guaranteed from –40°C to 85°C
Offset Voltage 3μV (Max, –40°C to 85°C)
Offset Voltage Drift 30nV/°C (Max, –40°C to 85°C)
Guaranteed Specifications from –55°C to 150°C
(LTC2054MP)
n
n
n
–
+
n
n
n
n
n
n
n
Common Mode Input Range from V to V – 0.5V
Output Swings Rail-to-Rail
Voltage Gain: 140dB (Typ)
PSRR and CMRR: 130dB (Typ)
Input Bias Current: 1pA (Typ, 25°C)
Noise: 1.6μV (0.01Hz to 10Hz Typ)
P-P
TheLTC2054/LTC2055,despitetheirminiaturesize,feature
uncompromising DC performance. The maximum input
offset voltage and offset drift are 3.0μV and 30nV/°C over
the –40°Cto85°Cindustrialtemperaturerange.Thealmost
zero DC offset and drift are supported with a power supply
rejection ratio (PSRR) and common mode rejection ratio
(CMRR) of 130dB (typ).
Supply Operation:
2.7V to 6V (LTC2054/LTC2055)
2.7V to 5.5V (LTC2054HV/LTC2055HV)
Low Profile (1mm) TSOT-23, MS8 and
3mm × 3mm × 0.8mm DFN Packages
n
APPLICATIONS
Theinputcommonmodevoltagerangesfromthenegative
supply up to typically 0.5V below the positive supply. The
open-loop gain is typically 140dB. The LTC2054/LTC2055
n
Thermocouple Amplifiers
Electronic Scales
Medical Instrumentation
Strain Gauge Amplifiers
High Resolution Data Acquisition
DC Accurate RC Active Filters
Low Side Current Sense
Battery-Powered Systems
n
n
also feature a 1.6μV DC to 10Hz noise and a 500kHz
n
P-P
gain-bandwidth product.
n
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
n
n
n
TYPICAL APPLICATION
VOS vs Temperature
–48V Low Side Precision Current Sense
10
V
S
=
5V
10k
1%
8
6
Q1
0.1μF
ZETEX
ZVN3320F
5V
4
100Ω
–
2
1%
0.01μF
–
+
39k
V
= 100V
SENSE
LTC2054
0
OUT
LTC2054
–2
–4
–6
–8
–10
+
0.1μF
100Ω
BZX84C5V1
= 5.1
V
Z
0.003Ω
1% 3W
–48V SUPPLY
–48V LOAD
–55
–20
15
50
85
120
155
20545 TA01
+
–
I
, V
TEMPERATURE (°C)
SENSE SENSE
20545 TA01b
20545fc
1
LTC2054/LTC2055
(Note 1)
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V to V )
+
–
Specified Temperature Range (Note 2)
LTC2054C/LTC2055C ............................... 0°C to 70°C
LTC2054I/LTC2055I..............................–40°C to 85°C
LTC2054H/LTC2055H.........................–40°C to 125°C
LTC2054MP .......................................–55°C to 150°C
Storage Temperature Range.................. –65°C to 150°C
DD Package .......................................–65°C to 125°C
Lead Temperature (Soldering, 10 sec)
LTC2054/LTC2055...................................................7V
LTC2054HV/LTC2055HV........................................12V
+
–
Input Voltage .......................(V + 0.3V) to (V – 0.3V)
S
Input Current........................................................ 10mA
Output Short-Circuit Duration ......................... Indefinite
TSOT23 and MS8 Packages............................. 300°C
PIN CONFIGURATION
TOP VIEW
+
OUT A
–IN A
+IN A
1
2
3
4
8
7
6
5
V
TOP VIEW
TOP VIEW
OUT B
–IN B
+IN B
+
+
OUT A
–IN A
+IN A
1
2
3
4
8 V
OUT 1
–
5 V
7 OUT B
6 –IN B
5 +IN B
V
2
–
V
–
+IN 3
V
4 –IN
MS8 PACKAGE
S5 PACKAGE
DD PACKAGE
8-LEAD PLASTIC MSOP
5-LEAD PLASTIC TSOT-23
8-LEAD (3mm × 3mm) PLASTIC DFN
T
= 150°C, θ = 200°C/W
JA
UNDERSIDE METAL INTERNALLY
JMAX
T
= 150°C, θ = 250°C/W
JA
JMAX
–
CONNECTED TO V
(PCB CONNECTION OPTIONAL)
T
= 125°C, θ = 160°C/W (NOTE 5)
JA
JMAX
ORDER INFORMATION
LEAD FREE FINISH
LTC2054CS5#PBF
LTC2054HVCS5#PBF
LTC2054IS5#PBF
TAPE AND REEL
PART MARKING* PACKAGE DESCRIPTION
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
LTC2054CS5#TRPBF
LTC2054HVCS5#TRPBF
LTC2054IS5#TRPBF
LTAGB
LTAGD
LTAGB
LTAGD
LTAGB
LTAGD
LBCW
LBCX
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
0°C to 70°C
5-Lead Plastic TSOT-23
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
0°C to 70°C
LTC2054HVIS5#PBF
LTC2054HS5#PBF
LTC2054HVHS5#PBF
LTC2055CDD#PBF
LTC2055HVCDD#PBF
LTC2055IDD#PBF
LTC2054HVIS5#TRPBF
LTC2054HS5#TRPBF
LTC2054HVHS5#TRPBF
LTC2055CDD#TRPBF
LTC2055HVCDD#TRPBF
LTC2055IDD#TRPBF
LTC2055HVIDD#TRPBF
LTC2055HDD#TRPBF
LTC2055HVHDD#TRPBF
LTC2054CMS8#TRPBF
LTC2055HVCMS8#TRPBF
LTC2055IMS8#TRPBF
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
8-Lead (3mm × 3mm) Plastic DFN
8-Lead (3mm × 3mm) Plastic DFN
8-Lead (3mm × 3mm) Plastic DFN
8-Lead (3mm × 3mm) Plastic DFN
8-Lead (3mm × 3mm) Plastic DFN
8-Lead (3mm × 3mm) Plastic DFN
8-Lead Plastic MSOP
0°C to 70°C
LBCW
LBCX
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
0°C to 70°C
LTC2055HVIDD#PBF
LTC2055HDD#PBF
LTC2055HVHDD#PBF
LTC2055CMS8#PBF
LTC2055HVCMS8#PBF
LTC2055IMS8#PBF
LBCW
LBCX
LTBCR
LTBCT
LTBCR
8-Lead Plastic MSOP
0°C to 70°C
8-Lead Plastic MSOP
–40°C to 85°C
20545fc
2
LTC2054/LTC2055
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING* PACKAGE DESCRIPTION
SPECIFIED TEMPERATURE RANGE
–40°C to 85°C
LTC2055HVIMS8#PBF
LTC2055HMS8#PBF
LTC2055HVHMS8#PBF
LTC2054MPS5#PBF
LTC2054HVMPS5#PBF
LTC2055HVIMS8#TRPBF
LTC2055HMS8#TRPBF
LTC2055HVHMS8#TRPBF
LTC2054MPS5#TRPBF
LTC2054HVMPS5#TRPBF
LTBCT
LTBCR
LTBCT
LTFFF
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
–40°C to 125°C
–40°C to 125°C
–55°C to 150°C
LTFFG
–55°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
(LTC2054/LTC2055) The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V, 5V unless otherwise noted. (Note 2)
LTC2054C/LTC2055C
LTC2054I/LTC2055I
LTC2054H/LTC2055H
SYMBOL
PARAMETER
CONDITIONS
No Load
MIN
TYP
140
130
MAX
MIN
TYP
140
130
MAX
180
155
UNITS
μA
I
S
I
S
Supply Current (LTC2054)
●
●
175
150
Supply Current Per Amplifier
(LTC2055)
No Load
μA
V
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current
(Note 3)
(Note 3)
0.5
0.02
50
3
0.5
0.02
50
3
μV
μV/°C
OS
●
0.03
0.05
ΔV /ΔT
OS
nV/√mo
I
I
(Note 4)
(Note 4)
1
1
pA
pA
B
●
●
150
300
3000
700
Input Offset Current
2
2
pA
pA
OS
e
n
Input Noise Voltage
R = 100Ω, DC to 1Hz
S
0.6
1.6
0.6
1.6
μV
μV
S
P-P
P-P
R = 100Ω, DC to 10Hz
+
CMRR
Common Mode Rejection Ratio
V
S
= GND to V – 0.7V
115
110
130
130
130
135
140
2.89
4.83
2.99
4.99
115
110
130
130
130
135
140
2.89
4.83
2.99
4.99
dB
dB
CM
V = 3V
●
●
●
●
●
●
●
●
●
+
V
S
= GND to V – 0.7V
120
115
120
115
dB
dB
CM
V = 5V
PSRR
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V = 2.7V to 6V
S
120
115
120
115
dB
dB
A
VOL
R = 100k, V = 3V, V
= V /2
120
115
120
115
dB
dB
L
S
OUT
OUT
S
R = 100k, V = 5V, V
= V /2
125
120
125
120
dB
dB
L
S
S
V
OUT
Output Voltage Swing High
R = 5k to GND, V = 3V
R = 5k to GND, V = 3V
2.87
2.85
2.87
2.84
V
V
L
L
S
S
R = 5k to GND, V = 5V
R = 5k to GND, V = 5V
4.80
4.75
4.80
4.70
V
V
L
L
S
S
R = 100k to GND, V = 3V
R = 100k to GND, V = 3V
2.98
2.975
2.98
2.97
V
V
L
L
S
S
R = 100k to GND, V = 5V
R = 100k to GND, V = 5V
4.985
4.980
4.985
4.970
V
V
L
L
S
S
20545fc
3
LTC2054/LTC2055
ELECTRICAL CHARACTERISTICS
(LTC2054/LTC2055) The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V, 5V unless otherwise noted. (Note 2)
LTC2054C/LTC2055C
LTC2054I/LTC2055I
LTC2054H/LTC2055H
SYMBOL
PARAMETER
CONDITIONS
R = 5k to GND, V = 3V
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
V
OUT
Output Voltage Swing Low
2
8
10
3
8
10
mV
mV
L
S
R = 5k to GND, V = 3V
●
●
●
●
L
S
R = 5k to GND, V = 5V
2
2
2
8
10
3
3
3
8
10
mV
mV
L
S
R = 5k to GND, V = 5V
L
S
R = 100k to GND, V = 3V
8
10
8
10
mV
mV
L
S
R = 100k to GND, V = 3V
L
S
R = 100k to GND, V = 5V
8
10
8
10
mV
mV
L
S
R = 100k to GND, V = 5V
L
S
SR
Slew Rate
0.5
500
1
0.5
500
1
V/μs
kHz
kHz
GBW
Gain Bandwidth Product
Internal Sampling Frequency
f
S
(LTC2054HV/LTC2055HV) The ● denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at TA = 25°C. VS = 5V unless otherwise noted. (Note 2)
LTC2054HVC/LTC2055HVC
LTC2054HVI/LTC2055HVI LTC2054HVH/LTC2055HVH
SYMBOL
PARAMETER
CONDITIONS
No Load (LTC2054)
No Load (LTC2055)
(Note 3)
MIN
TYP
175
150
0.5
MAX
210
180
5
MIN
TYP
175
150
0.5
MAX
215
185
5
UNITS
μA
I
I
Supply Current
●
●
S
S
Supply Current (Per Amplifier)
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current
μA
V
μV
OS
(Note 3)
●
0.025
50
0.03
0.025
50
0.05
μV/°C
nV/√mo
ΔV /ΔT
OS
I
I
(Note 4)
(Note 4)
3
3
pA
pA
B
●
●
150
300
3000
700
Input Offset Current
6
6
pA
pA
OS
e
n
Input Noise Voltage
R = 100Ω, DC to 1Hz
S
0.6
1.6
0.6
1.6
μV
P-P
μV
P-P
S
R = 100Ω, DC to 10Hz
+
CMRR
PSRR
AVOL
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V
= GND to V – 0.9
120
115
130
130
140
4.82
4.99
120
115
130
130
140
4.82
4.99
dB
dB
CM
●
●
●
●
●
V = 2.7V to 11V
120
115
120
115
dB
dB
S
R = 100k, V
= GND
OUT
125
120
125
120
dB
dB
L
V
OUT
Maximum Output Voltage Swing R = 5k to GND
4.78
4.75
4.78
4.70
V
V
L
L
R = 5k to GND
R = 100k to GND
R = 100k to GND
4.98
4.975
4.98
4.97
V
V
L
L
SR
Slew Rate
0.5
500
1
0.5
500
1
V/μs
kHz
kHz
GBW
Gain Bandwidth Product
Internal Sampling Frequency
f
S
20545fc
4
LTC2054/LTC2055
ELECTRICAL CHARACTERISTICS (LTC2054MP) The l denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V, 5V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
Supply Current
Input Offset Voltage
No Load
●
●
145
190
μA
S
V
(Note 3)
10
8
μV
μV
OS
(Note 3) –55°C to 135°C
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current
(Note 3)
●
0.04
50
1
0.1
μV/°C
ΔV /ΔT
OS
nV/√mo
I
I
(Note 4)
(Note 4)
pA
nA
B
●
●
12
5
Input Offset Current
2
pA
nA
OS
e
n
Input Noise Voltage
R = 100Ω, DC to 1Hz
S
0.6
1.6
μV
μV
S
P-P
P-P
R = 100Ω, DC to 10Hz
+
CMRR
Common Mode Rejection Ratio
V
= GND to V – 0.7V
115
105
130
130
130
135
140
2.89
4.83
2.99
4.99
3
dB
dB
CM
S
V = 3V
●
●
●
●
●
●
●
●
●
●
●
●
●
+
V
= GND to V – 0.7V
120
110
dB
dB
CM
S
V = 5V
PSRR
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V = 2.7V to 6V
120
110
dB
dB
S
A
VOL
R = 100k, V = 3V, V
= V /2
120
110
dB
dB
L
S
OUT
OUT
S
R = 100k, V = 5V, V
= V /2
125
115
dB
dB
L
S
S
V
Output Voltage Swing High
R = 5k to GND, V = 3V
R = 5k to GND, V = 3V
2.87
2.84
V
V
OUT
L
L
S
S
R = 5k to GND, V = 5V
R = 5k to GND, V = 5V
4.80
4.70
V
V
L
L
S
S
R = 100k to GND, V = 3V
R = 100k to GND, V = 3V
2.98
2.97
V
V
L
L
S
S
R = 100k to GND, V = 5V
R = 100k to GND, V = 5V
4.985
4.970
V
V
L
L
S
S
V
Output Voltage Swing Low
R = 5k to GND, V = 3V
R = 5k to GND, V = 3V
8
mV
mV
OUT
L
L
S
S
10
R = 5k to GND, V = 5V
R = 5k to GND, V = 5V
3
8
10
mV
mV
L
L
S
S
R = 100k to GND, V = 3V
R = 100k to GND, V = 3V
3
8
10
mV
mV
L
L
S
S
R = 100k to GND, V = 5V
R = 100k to GND, V = 5V
3
8
10
mV
mV
L
L
S
S
SR
Slew Rate
0.5
500
1
V/μs
kHz
kHz
GBW
Gain Bandwidth Product
Internal Sampling Frequency
f
S
20545fc
5
LTC2054/LTC2055
ELECTRICAL CHARACTERISTICS
(LTC2054HVMP) The ● denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. VS = 5V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
No Load
MIN
TYP
MAX
220
10
UNITS
μA
I
Supply Current
●
●
●
175
S
V
OS
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current
(Note 3)
μV
(Note 3)
0.05
50
3
0.1
μV/°C
nV/√mo
ΔV /ΔT
OS
I
I
(Note 4)
(Note 4)
pA
nA
B
●
●
12
5
Input Offset Current
6
pA
nA
OS
e
n
Input Noise Voltage
R = 100Ω, DC to 1Hz
S
0.6
1.6
μV
P-P
μV
P-P
S
R = 100Ω, DC to 10Hz
+
CMRR
PSRR
AVOL
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
V
= GND to V – 0.9
120
110
130
130
140
4.82
4.99
dB
dB
CM
●
●
●
●
●
V = 2.7V to 11V
120
110
dB
dB
S
R = 100k, V
= GND
OUT
125
115
dB
dB
L
V
OUT
R = 5k to GND
R = 5k to GND
4.78
4.675
V
V
L
L
R = 100k to GND
R = 100k to GND
4.98
4.965
V
V
L
L
SR
Slew Rate
0.5
500
1
V/μs
kHz
kHz
GBW
Gain Bandwidth Product
Internal Sampling Frequency
f
S
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: The LTC2054/LTC2055 are designed, characterized and expected to
meet the extended temperature limits of –40°C and 125°C. The LTC2054C/
LTC2055C/LTC2054HVC/LTC2055HVC are guaranteed to meet the
temperature limits of 0°C and 70°C. The LTC2054I/LTC2055I/LTC2054HVI/
LTC2055HVI are guaranteed to meet temperature limits of –40°C and
85°C. The LTC2054H/LTC2055H and LTC2054HVH/LTC2055HVH are
guaranteed to meet the temperature limits of –40°C and 125°C. The
LTC2054MP/LTC2054HVMP are guaranteed to meet the temperature limits
of –55°C and 150°C.
Note 3: These parameters are guaranteed by design. Thermocouple effects
preclude measurements of these voltage levels during automated testing.
Note 4: Limit is determined by high speed automated test capability. See
Typical Characteristic curves for actual typical performance. For tighter
specifications, please consult Linear Technology Marketing.
Note 5: The θ specified for the DD package is with minimal PCB heat
JA
spreading metal. Using expanded metal area on all layers of a board
reduces this value.
20545fc
6
LTC2054/LTC2055
TYPICAL PERFORMANCE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency
DC CMRR
vs Common Mode Input Range
PSRR vs Frequency
140
140
120
140
120
V
S
= 2.5V
V
V
= 3V OR 5V
S
120
100
80
= 0.5V
CM
P-P
100
80
60
40
20
0
100
80
60
40
20
0
V
S
= 5V
60
V
= 3V
S
–PSRR
40
20
+PSRR
0
–20
–40
T
= 25°C
A
1
10
100
1k
10k
100k
10
100
1k
10k
100k
1M
0
1
2
3
4
5
FREQUENCY (Hz)
FREQUENCY (Hz)
V
(V)
CM
20545 G01
20545 G02
20545 G03
Output Voltage Swing
vs Load Resistance
Output Swing
Short-Circuit Output Current
vs Supply Voltage
vs Load Current
+
+
5
4
6
4
V
V
=
=
5V
S
S
V
=
2.5V
1.5V
S
V – 0.5
I
SINK
3
V
2.5V
+
V
= V
OUT
V
= 5V
2
S
+
V – 1.0
2
V
=
S
0
V
V
=
=
1.5V
1.5V
1
S
S
+
V – 1.5
0
–2
–4
–6
–8
–10
–
–
–
–
V
V
V
V
+ 1.5
+ 1.0
+ 0.5
–1
–2
–3
–4
–5
V
= 5V
S
V
=
2.5V
2
S
I
V
=
2.5V
5V
SOURCE
S
–
V
= V
V
= 1.5V
OUT
S
V
=
S
R
L
TO GND
0
2
4
6
3
4
5
7
8
9
+
10 11
–
6
1
4
5
0
3
LOAD RESISTANCE (kΩ)
TOTAL SUPPLY VOLTAGE, V TO V (V)
SOURCING OR SINKING LOAD CURRENT (mA)
20545 G04
20545 G06
20545 G05
Gain/Phase vs Frequency
Input Bias Current vs Temperature
120
100
80
–60
100000
10000
1000
100
V
=
2.5V
V
=
5V
S
IN
L
S
V
= 0.5V
P-P
–80
PHASE
R
= 10kΩ
–100
–120
–140
–160
–180
–200
–220
60
GAIN
40
20
0
10
C
C
C
= 30pF
= 50pF
= 100pF
L
L
L
–20
–40
1
50
85
TEMPERATURE (°C)
120
–55
–20
15
155
10
100
1k
10k 100k
1M
10M
FREQUENCY (Hz)
20545 G07
20545 G08
20545fc
7
LTC2054/LTC2055
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current
vs Input Common Mode Voltage
VOS vs Temperature
Transient Response
8
7
10000
1000
100
10
V
=
5V
V
= 2.5V
S
SUPPLY
T
= 155°C
= 125°C
A
6
1
0
T
5
A
4
3
2
T
= 85°C
= 70°C
A
A
1
T
–1
0
1
T
= –55°C
A
–1
T
= 25°C
A
A
T
= –40°C
–2
–55
0.1
–20
15
50
85
TEMPERATURE (°C)
120
155
A
= 1
10μs/DIV
–2.5 –2 –1.5 –1 –0.5
0
0.5
1
1.5
2
V
L
R = 100k
COMMON MODE VOLTAGE (V)
C = 50pF
L
S
IN
20545 G09
20545 G11
20545 G10
V
V
=
2.5V
= 10kHz 2V
P-P
Output Overload Recovery
Common Mode Input Range
Output Overload Recovery
11
10
9
–
V
= 0V
0.2
0
2.5
0
8
7
6
0
5
4
3
0
2
–2.5
–0.2
1
0
0
1
2
3
4
5
6
7
8
9
10 11
A
= –100
2ms/DIV
A
= –100
2ms/DIV
V
L
V
L
R = 100k
R = 100k
TOTAL SUPPLY VOLTAGE (V)
V
S
=
2.5V
V = 2.5V
S
20545 G14
20545 G12
20545 G13
Supply Current vs Temperature
Noise Spectrum
Supply Current vs Supply Voltage
250
225
200
175
150
125
100
75
250
225
200
175
150
125
100
75
100
90
80
70
60
50
40
30
20
10
0
V
=
5V
S
V
= 2.5V
S
V
=
1.5V
S
50
50
25
A
V
= 100
25
V
S
=
2.5V
0
0
0
1
2
3
4
5
6
7
8
9
10
15
50
85
TEMPERATURE (°C)
120
–55
–20
155
10
100
1k
10k
TOTAL SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
20545 G17
20545 G15
20545 G16
20545fc
8
LTC2054/LTC2055
TEST CIRCUITS
Electrical Characteristics
Test Circuit
100k
OUTPUT
+
V
10Ω
–
LTC2054/55
+
R
L
–
V
20545 TC01
DC-10Hz Noise Test Circuit
100k
475k
10Ω
0.01μF
–
158k
316k
475k
LTC2054/55
–
TO X-Y
RECORDER
0.1μF
0.01μF
+
LT1012
+
20545 TC02
FOR 1Hz NOISE BW INCREASE ALL THE CAPACITORS BY A FACTOR OF 10.
20545fc
9
LTC2054/LTC2055
APPLICATIONS INFORMATION
Clock Feedthrough, Input Bias Current
Thesecondformofclockfeedthroughiscausedbythesmall
amount of charge injection occurring during the sampling
andholdingoftheopamp’sinputoffsetvoltage.Thecurrent
spikes are multiplied by the impedance seen at the input
terminals of the op amp, and the resulting voltage spikes
appear at the output multiplied by the closed loop gain
of the op amp. To reduce this form of clock feedthrough,
use smaller valued gain setting resistors and minimize the
source resistance at the input. If the resistance seen at the
inputs is less than 10kꢀ, this form of clock feedthrough
is less than the amount of residue clock feedthrough from
the first form described above.
The LTC2054 and LTC2055 use auto-zeroing circuitry
to achieve an almost zero DC offset over temperature,
common mode voltage, and power supply voltage. The
frequency of the clock used for auto-zeroing is typically
1.0kHz. The term “clock feedthrough” is broadly used to
indicate visibility of this clock frequency in the op amp
output spectrum. There are typically two types of clock
feedthrough in auto-zeroed op amps like the LTC2054/
LTC2055.
Thefirstformofclockfeedthroughiscausedbythesettling
of the internal sampling capacitor and is input referred;
that is, it is multiplied by the closed loop gain of the op
amp. This form of clock feedthrough is independent of the
magnitudeoftheinputsourceresistanceorthemagnitude
of the gain setting resistors. The LTC2054/LTC2055 have
an input referred residue clock feedthrough of less then
Placing a capacitor across the feedback resistor reduces
eitherformofclockfeedthroughbylimitingthebandwidth
of the closed loop gain.
Input bias current is defined as the DC current into the
input pins of the op amp. The same current spikes that
0.2μV
at 1.0kHz.
RMS
DC to 1Hz Noise
0.4μV
20545 F01
10 SEC
DC to 10Hz Noise
1μV
20545 F02
1 SEC
20545fc
10
LTC2054/LTC2055
APPLICATIONS INFORMATION
cause the second form of clock feedthrough described
above, whenaveraged, dominatetheDCinputbiascurrent
of the op amp below 70°C.
Voltage Follower with Input Exceeding
the Common Mode Range
2.5V
Attemperaturesabove70°C,theleakageoftheESDprotec-
tion diodes on the inputs increases the input bias currents
of both inputs in the positive direction, while the current
caused by the charge injection stays relatively constant.
Atelevatedtemperatures(above70°C)theleakagecurrent
begins to dominate and both the negative and positive
pins’ input bias currents are in the positive direction (into
the pins).
–
LTC2054/55
OUTPUT
1k
+
100k
3.75V
P
SINE WAVE
–2.5V
20545 F03
Extended Common Mode Range
Extended Common Mode Range
2V
0V
The LTC2054/LTC2055 input stage is designed to allow
nearlyrail-to-railinputcommonmodesignals.Inaddition,
signals that extend beyond the allowed input common
mode range do not cause output phase inversion.
–2V
2V
0V
–2V
A
= 1
500μs/DIV
V
L
R = 100k
V
V
=
2.5V
S
IN
20545 F04
= 500Hz 7.5V
P-P
TYPICAL APPLICATIONS
Simple Differential Bridge Amplifier
5V
5V
0.1μF
499k
1μF
LT1790-2.5
5
4
3
10kΩ
BRIDGE
–
1
A
= 100
LTC2054HV
V
+
2
0.1μF
499k
–5V
20545 TA02
20545fc
11
LTC2054/LTC2055
TYPICAL APPLICATIONS
Ground Referred Precision Current Sources
LT1634-1.25
+
0 ≤ I
≤ 100μA
OUT
–
V
OUT
(V ) + 1.5V ≤ V
≤ –1V
+
OUT
–
V
1.25V
I
= ———
OUT
10k
R
SET
4
3
5
–
+
1
3
4
R
LTC2054
2
SET
5
+
1
LTC2054
2
R
10k
SET
–
1.25V
= ———
I
–
OUT
V
R
SET
+
V
OUT
–
0 ≤ I
≤ 100μA
OUT
OUT
LT1634-1.25
+
0.2V ≤ V
≤ (V ) – 1.5V
20545 TA03
Instrumentation Amplifier with 100V Common Mode Input Voltage
1k
+
1M
V
1M
1M
8
2
3
+
IN
–
–
1k
1/2
LTC2055HV
6
5
1
V
–
1/2
7
+
V
OUT
LTC2055HV
4
+
–
V
1k
OUTPUT OFFSET ≤3mV
FOR 0.1% RESISTORS, CMRR = 54dB
20545 TA04
Gain of 1001 Single Supply Instrumentation Amplifier
C1
0.1μF
R2
1k
+
R4 1M
V
R1
1M
2
3
8
R3
1k
–
+
1/2
LTC2055
6
5
1
–
+
1/2
LTC2055
7
V
–V
OUT
IN
4
+V
IN
OUTPUT DC OFFSET ≤ 6mV
FOR 0.1% RESISTORS, CMRR = 54dB
20545 TA05
20545fc
12
LTC2054/LTC2055
PACKAGE DESCRIPTION
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698 Rev C)
0.70 p0.05
3.5 p0.05
2.10 p0.05 (2 SIDES)
1.65 p0.05
PACKAGE
OUTLINE
0.25 p 0.05
0.50
BSC
2.38 p0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
R = 0.125
0.40 p 0.10
TYP
5
8
3.00 p0.10
(4 SIDES)
1.65 p 0.10
(2 SIDES)
PIN 1
TOP MARK
(NOTE 6)
(DD8) DFN 0509 REV C
4
1
0.25 p 0.05
0.75 p0.05
0.200 REF
0.50 BSC
2.38 p0.10
BOTTOM VIEW—EXPOSED PAD
0.00 – 0.05
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
20545fc
13
LTC2054/LTC2055
PACKAGE DESCRIPTION
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660 Rev F)
0.889 ± 0.127
(.035 ± .005)
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
0.52
(.0205)
REF
0.65
(.0256)
BSC
0.42 ± 0.038
(.0165 ± .0015)
TYP
8
7 6 5
RECOMMENDED SOLDER PAD LAYOUT
3.00 ± 0.102
(.118 ± .004)
(NOTE 4)
4.90 ± 0.152
(.193 ± .006)
DETAIL “A”
0.254
(.010)
0° – 6° TYP
GAUGE PLANE
1
2
3
4
0.53 ± 0.152
(.021 ± .006)
1.10
(.043)
MAX
0.86
(.034)
REF
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.22 – 0.38
0.1016 ± 0.0508
(.009 – .015)
(.004 ± .002)
0.65
(.0256)
BSC
TYP
MSOP (MS8) 0307 REV F
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
20545fc
14
LTC2054/LTC2055
PACKAGE DESCRIPTION
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
0.62
MAX
0.95
REF
2.90 BSC
(NOTE 4)
1.22 REF
1.50 – 1.75
(NOTE 4)
2.80 BSC
1.4 MIN
3.85 MAX 2.62 REF
PIN ONE
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45 TYP
5 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
(NOTE 3)
NOTE:
S5 TSOT-23 0302 REV B
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
20545fc
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 representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
15
LTC2054/LTC2055
TYPICAL APPLICATIONS
Low Power, Bidirectional 60V Precision Hi Side Current Sense
POSITIVE SENSE
10mΩ
+
–
5
3
BAT54
1
V
SENSE
PRECISION
BIDIRECTIONAL
GAIN OF 125
LTC1754-5
100Ω
0.1μF
1N4686
3.9V
3
4
5
LTC2054
2
+
–
Z
2
4
6
1
10μF
10μF
1μF
100Ω
0.1μF
12.4k
33Ω
2
–
7
+
V
S
2N5401
1
V
8
5
6
S
V
= 2.5V
SENSE
ON 5V
OFF 0V
OUT
MPSA42
35.7k
POWER SUPPLY
(NOTE: POSITIVE
CURRENT SENSE
INCLUDES CIRCUIT
SUPPLY CURRENT)
PRECISION
+1000* V
BIDIRECTIONAL
HIGH VOLTAGE
LEVEL SHIFT
LT1787HV
4.7μF
AND GAIN OF 8
2.5V REF
4
20545 TA06
Precision Low Drift Integrator
Ultra-Precision, Wide Dynamic Range
10Hz Bandwidth Photodiode Amplifier
OPEN
t = t
S1
O
100k
1Ω
0.15μF
10μF
GAIN = 0.1V/μA
~10pA RESOLUTION
50μA FULL SCALE
5V
5V
5
1k
4
3
5
–
1MΩ
4
3
2k
V
IN
1
–
ANY
PHOTODIODE
LTC2054
t
V (t)
1
IN
dt
LTC2054HV
°
0.01μF
+
t
10 sec
O
2
+
2
20545 TA08
–5V
20545 TA07
–5V
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
Low Supply Current 200μA
LTC1049
Low Power Zero-Drift Op Amp
Precision Zero-Drift Op Amp
Precision Zero-Drift Op Amp
15V Zero-Drift Op Amp
LTC1050
Single Supply Operation 4.75V to 16V, Noise Tested and Guaranteed
Dual/Quad Version of the LTC1050
LTC1051/LTC1053
LTC1150
High Voltage Operation 18V
LTC1152
Rail-to-Rail Input and Output Zero-Drift Op Amp
Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown
LT1677
Low Noise Rail-to-Rail Input and Output
Precision Op Amp
V
OS
= 90μV, V = 2.7V to 44V
S
LT1884/LT1885
LTC2050
Rail-to-Rail Output Precision Op Amp
Zero-Drift Op Amp
V
= 50μV, I = 400pA, V = 2.7V to 40V
B S
OS
Enhanced Output Drive Capability
Dual/Quad Version of the LTC2050 in MS8/GN16 Package
Rail-to-Rail Input
LTC2051/LTC2052
LTC2053
Dual/Quad Zero-Drift Op Amp
Zero-Drift Instrumentation Amp
20545fc
LT 0809 REV C • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
16
●
●
© LINEAR TECHNOLOGY CORPORATION 2004
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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