LTC2054/LTC2055
Single/Dual
Micropower Zero-Drift
Operational Amplifiers
DESCRIPTIO
The LTC
®
2054/LTC2055 are low power, low noise single/
dual zero-drift operational amplifiers available in the SOT-23
(ThinSOT
TM
) and MS8 packages. For space limited appli-
cations, 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.
The LTC2054/LTC2055, despite their miniature size, fea-
ture uncompromising DC performance. The typical input
offset voltage and offset drift are 0.5µV and 25nV/°C. The
almost zero DC offset and drift are supported with a power
supply rejection ratio (PSRR) and common mode rejec-
tion ratio (CMRR) of more than 130dB.
The input common mode voltage ranges from the negative
supply up to typically 0.5V from the positive supply. The
open-loop gain is typically 140dB. The LTC2054/LTC2055
also feature a 1.6µV
P-P
DC to 10Hz noise and a 500kHz
gain-bandwidth product.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation
FEATURES
■
■
■
■
■
■
■
■
■
■
■
Supply Current 150µA (Max per Amplifier)
Guaranteed Over Temperature
Offset Voltage 3µV (Max)
Offset Voltage Drift 30nV/°C (Max)
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
P-P
(0.01Hz to 10Hz Typ)
Supply Operation:
2.7V to 6V (LTC2054/LTC2055)
2.7V to
±5.5V
(LTC2054HV/LTC2055HV)
Low Profile (1mm) SOT-23, MS8 and
3mm
×
3mm
×
0.8mm DFN Packages
APPLICATIO S
■
■
■
■
■
■
■
■
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
TYPICAL APPLICATIO
–48V Low Side Precision Current Sense
SUPPLY CURRENT (µA)
Q1
ZETEX
ZVN3320F
100Ω
1%
39k
0.1µF
5V
10k
1%
–
LTC2054
0.01µF
–
LTC2054
V
OUT
= 100V
SENSE
+
0.1µF
+
BZX84C5V1
V
Z
= 5.1
–48V SUPPLY
100Ω
0.003Ω
1% 3W
–
I
SENSE
, V
SENSE
+
–48V LOAD
20545 TA01
U
U
U
Supply Current (per Amplifier)
250
225
200
175
150
125
100
75
50
25
0
–40
–15
5
25
45
70
85
125
LTC2055
LTC2054
TEMPERATURE (°C)
20545 TA01b
sn20545 20545fas
1
LTC2054/LTC2055
ABSOLUTE
AXI U
RATI GS
Total Supply Voltage (V
+
to V
–
)
LTC2054/LTC2055 .................................................. 7V
LTC2054HV/LTC2055HV ....................................... 12V
Input Voltage ........................ (V
+
+ 0.3V) to (V
–
– 0.3V)
Input Current ......................................................
±10mA
Output Short-Circuit Duration ......................... Indefinite
PACKAGE/ORDER I FOR ATIO
TOP VIEW
OUT 1
V
–
2
+IN 3
4 –IN
5V
+
OUT A
–IN A
+IN A
V
–
S5 PACKAGE
5-LEAD PLASTIC SOT-23
T
JMAX
= 150°C,
θ
JA
= 250°C/W
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
UNDERSIDE METAL INTERNALLY
CONNECTED TO V
–
(PCB CONNECTION OPTIONAL)
T
JMAX
= 125°C,
θ
JA
= 160°C/W, NOTE 5
ORDER PART
NUMBER*
LTC2054CS5
LTC2054HVCS5
LTC2054IS5
LTC2054HVIS5
LTC2054HS5
LTC2054HVHS5
S5 PART
MARKING
LTAGB
LTAGD
LTAGB
LTAGD
LTAGB
LTAGD
ORDER PART
NUMBER*
LTC2055CDD
LTC2055HVCDD
LTC2055IDD
LTC2055HVIDD
LTC2055HDD
LTC2055HVHDD
*The temperature grade (C, I or H) is indicated on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature
ranges.
ELECTRICAL CHARACTERISTICS
(LTC2054/LTC2055, LTC2054HV/LTC2055HV) The
●
denotes the
specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 3V, 5V
unless otherwise noted. (Note 3)
LTC2054C/LTC2055C
LTC2054I/LTC2055I
MIN
TYP
MAX
140
175
150
175
130
150
135
150
±0.5
±3
0.02
±0.03
50
±1
±150
±1
±150
LTC2054H/LTC2055H
MIN
TYP
MAX
UNITS
140
180
µA
150
180
µA
130
155
µA
135
155
µA
±0.5
±3
µV
0.02
±0.05
µV/°C
50
nV/√mo
±1
pA
±3000
pA
±1
pA
±3000
pA
sn20545 20545fas
SYMBOL
I
S
I
S
V
OS
∆V
OS
/∆T
I
B
PARAMETER
Supply Current (LTC2054)
Supply Current Per Amplifier
(LTC2055)
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current (Note 4)
CONDITIONS
No Load, V
S
= 3V
No Load, V
S
= 5V
No Load, V
S
= 3V
No Load, V
S
= 5V
(Note 2)
(Note 2)
V
S
= 3V
V
S
= 3V
V
S
= 5V
V
S
= 5V
2
U
U
W
W W
U
W
(Note 1)
Operating Temperature Range ............. – 40°C to 125°C
Specified Temperature Range (Note 3) – 40°C to 125°C
Storage Temperature Range ................ – 65°C to 150°C
DD Package ...................................... – 65°C to 125°C
Lead Temperature (Soldering, 10 sec)................. 300°C
TOP VIEW
1
2
3
4
8
7
6
5
V
+
OUT B
–IN B
+IN B
OUT A
–IN A
+IN A
V
–
1
2
3
4
TOP VIEW
8
7
6
5
V
+
OUT B
–IN B
+IN B
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 200°C/W
DD PART
MARKING
LBCW
LBCX
LBCW
LBCX
LBCW
LBCX
ORDER PART
NUMBER*
LTC2055CMS8
LTC2055HVCMS8
LTC2055IMS8
LTC2055HVIMS8
LTC2055HMS8
LTC2055HVHMS8
MS8 PART
MARKING
LTBCR
LTBCT
LTBCR
LTBCT
LTBCR
LTBCT
●
●
●
●
●
●
●
LTC2054/LTC2055
ELECTRICAL CHARACTERISTICS
(LTC2054/LTC2055, LTC2054HV/LTC2055HV) The
●
denotes the
specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 3V, 5V
unless otherwise noted. (Note 3)
LTC2054C/LTC2055C
LTC2054I/LTC2055I
MIN
TYP
MAX
±2
±300
±2
±300
0.6
1.6
115
130
110
120
130
115
120
130
115
120
135
115
125
140
120
2.87
2.89
2.85
4.80
4.83
4.75
2.98
2.99
2.975
4.985 4.99
4.980
2
8
10
2
8
10
2
8
10
2
8
10
0.5
500
1
LTC2054H/LTC2055H
MIN
TYP
MAX
±2
±700
±2
±700
0.6
1.6
115
130
110
120
130
115
120
130
115
120
135
115
125
140
120
2.87
2.89
2.84
4.80
4.83
4.70
2.98
2.99
2.97
4.985 4.99
4.970
3
8
10
3
8
10
3
8
10
3
8
10
0.5
500
1
SYMBOL
I
OS
PARAMETER
Input Offset Current (Note 4)
e
n
CMRR
Input Noise Voltage
Common Mode Rejection Ratio
PSRR
A
VOL
Power Supply Rejection Ratio
Large-Signal Voltage Gain
CONDITIONS
V
S
= 3V
V
S
= 3V
V
S
= 5V
V
S
= 5V
R
S
= 100Ω, DC to 1Hz
R
S
= 100Ω, DC to 10Hz
V
CM
= GND to V
+
– 0.7V
V
S
= 3V
V
CM
= GND to V
+
– 0.7V
V
S
= 5V
V
S
= 2.7V to 6V
R
L
= 100k, V
S
= 3V, V
OUT
= V
S
/2
R
L
= 100k, V
S
= 5V, V
OUT
= V
S
/2
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
V
OUT
Output Voltage Swing High
V
OUT
Output Voltage Swing Low
R
L
= 5k to GND, V
S
= 3V
R
L
= 5k to GND, V
S
= 3V
R
L
= 5k to GND, V
S
= 5V
R
L
= 5k to GND, V
S
= 5V
R
L
= 100k to GND, V
S
= 3V
R
L
= 100k to GND, V
S
= 3V
R
L
= 100k to GND, V
S
= 5V
R
L
= 100k to GND, V
S
= 5V
R
L
= 5k to GND, V
S
= 3V
R
L
= 5k to GND, V
S
= 3V
R
L
= 5k to GND, V
S
= 5V
R
L
= 5k to GND, V
S
= 5V
R
L
= 100k to GND, V
S
= 3V
R
L
= 100k to GND, V
S
= 3V
R
L
= 100k to GND, V
S
= 5V
R
L
= 100k to GND, V
S
= 5V
SR
GBW
f
S
Slew Rate
Gain Bandwidth Product
Internal Sampling Frequency
UNITS
pA
pA
pA
pA
µV
P-P
µV
P-P
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
V
V
V
V
V
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
V/µs
kHz
kHz
sn20545 20545fas
3
LTC2054/LTC2055
ELECTRICAL CHARACTERISTICS
(LTC2054HV/LTC2055HV) The
●
denotes the specifications which apply
over the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
S
=
±5V
unless otherwise noted. (Note 3)
LTC2054HVC/LTC2055HVC
LTC2054HVI/LTC2055HVI
MIN TYP MAX
175
210
150
180
±0.5
±5
0.025
±0.03
50
±3
±150
±6
±300
0.6
1.6
120
130
115
120
130
115
125
140
120
±4.78 ±4.82
±4.75
±4.98 ±4.99
±4.975
0.5
500
1
LTC2054HVH/LTC2055HVH
MIN TYP MAX
UNITS
175
215
µA
150
185
µA
±0.5
±5
µV
0.025
±0.05
µV/°C
50
nV/√mo
±3
pA
±3000
pA
±6
pA
±700
pA
0.6
µV
P-P
1.6
µV
P-P
120
130
dB
115
dB
120
130
dB
115
dB
125
140
dB
120
dB
±4.78 ±4.82
V
±4.70
V
±4.98 ±4.99
V
±4.97
V
0.5
V/µs
500
kHz
1
kHz
SYMBOL
I
S
I
S
V
OS
∆V
OS
/∆T
I
B
I
OS
e
n
CMRR
PSRR
AVOL
V
OUT
PARAMETER
Supply Current
Supply Current (Per Amplifier)
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current (Note 4)
Input Offset Current (Note 4)
CONDITIONS
No Load (LTC2054)
No Load (LTC2055)
(Note 2)
(Note 2)
●
●
●
●
●
Input Noise Voltage
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
R
S
= 100Ω, DC to 1Hz
R
S
= 100Ω, DC to 10Hz
V
CM
= GND to V
+
– 0.9
V
S
= 2.7V to 11V
R
L
= 100k, V
OUT
= GND
R
L
= 5k to GND
R
L
= 5k to GND
R
L
= 100k to GND
R
L
= 100k to GND
●
●
●
●
●
SR
GBW
f
S
Slew Rate
Gain Bandwidth Product
Internal Sampling Frequency
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
These parameters are guaranteed by design. Thermocouple effects
preclude measurements of these voltage levels during automated testing.
Note 3:
All versions of 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.
Note 4:
Limit is determined by high speed automated test capability. See
Typical Chacteristic curves for actual typical performance. For tighter
specifications, please consult Linear Technology Marketing.
Note 5:
The
θ
JA
specified for the DD package is with minimal PCB heat
spreading metal. Using expanded metal area on all layers of a board
reduces this value.
sn20545 20545fas
4
LTC2054/LTC2055
TYPICAL PERFOR A CE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency
140
120
100
CMRR (dB)
CMRR (dB)
V
S
= 3V OR 5V
V
CM
= 0.5V
P-P
80
60
40
20
0
1
10
100
1k
FREQUENCY (Hz)
10k
100k
20545 G01
80
V
S
= 3V
60
40
20
0
0
1
2
V
CM
(V)
3
PSRR (dB)
Output Voltage Swing
vs Load Resistance
5
4
3
V
S
=
±5V
V
S
=
±2.5V
V
S
=
±2.5V
V
S
=
±5V
V
S
=
±1.5V
SHORT-CIRCUIT OUTPUT CURRENT, I
OUT
(mA)
OUTPUT SWING (V)
2
1
0
V
S
=
±1.5V
V
S
=
±1.5V
OUTPUT SWING (V)
–1
–2
–3
–4
–5
R
L
TO GND
0
V
S
=
±5V
6
20545 G04
2
4
LOAD RESISTANCE (kΩ)
Gain/Phase vs Frequency
120
100
80
PHASE
–60
V
S
=
±2.5V
V
IN
= 0.5V
P-P
–80
R
L
= 10kΩ
GAIN (dB)
60
GAIN
40
20
0
–120
–140
–160
–180
C
L
= 30pF
C
L
= 50pF
C
L
= 100pF
100
1k
10k 100k
FREQUENCY (Hz)
1M
BIAS CURRENT (pA)
BIAS CURRENT (pA)
–20
–40
10
U W
V
S
=
±2.5V
20545 G07
DC CMRR
vs Common Mode Input Range
140
120
100
V
S
= 5V
140
120
100
80
60
40
20
PSRR vs Frequency
V
S
=
±2.5V
–PSRR
+PSRR
0
–20
–40
T
A
= 25°C
4
5
20545 G02
10
100
1k
10k
100k
FREQUENCY (Hz)
1M
20545 G03
Output Swing
vs Load Current
V
+
V
+
– 0.5
V
+
– 1.0
V
+
– 1.5
6
4
2
0
–2
–4
–6
–8
–10
Short-Circuit Output Current vs
Supply Voltage
I
SINK
V
OUT
= V
+
V
– +
1.5
V
– +
1.0
V
S
=
±2.5V
V
S
=
±5V
V
– +
0.5 V
S
=
±1.5V
V
–
1
2
4
5
3
0
SOURCING OR SINKING LOAD CURRENT (mA)
20545 G06
I
SOURCE
V
OUT
= V
–
3
7
8
9 10 11
4
5
6
+
TOTAL SUPPLY VOLTAGE, V TO V
–
(V)
20545 G14
Input Bias Current vs
Temperature
10000
10000
Input Bias Current vs Input
Common Mode Voltage
V
SUPPLY
=
±2.5V
T
A
= 125°C
–100
1000
1000
PHASE (DEG)
100
100
T
A
= 85°C
10
T
A
= 70°C
T
A
= 25°C
T
A
= –40°C
10
V
S
= 10V
V
S
= 5V
1
1
–200
–220
10M
V
S
= 3V
0.1
–40
–15
70
25
45
5
TEMPERATURE (°C)
85
0.1
125
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
COMMON MODE VOLTAGE (V)
20545 G09
20545 G08
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