LTC2051/LTC2052
Dual/Quad Zero-Drift
Operational Amplifiers
FEATURES
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DESCRIPTIO
Maximum Offset Voltage of 3μV
Maximum Offset Voltage Drift of 30nV/°C
Small Footprint, Low Profile MS8/GN16 Packages
Single Supply Operation: 2.7V to
±5.5V
Noise: 1.5μV
P-P
(0.01Hz to 10Hz Typ)
Voltage Gain: 140dB (Typ)
PSRR: 130dB (Typ)
CMRR: 130dB (Typ)
Supply Current: 0.75mA (Typ) per Amplifier
Extended Common Mode Input Range
Output Swings Rail-to-Rail
Operating Temperature Range – 40°C to 125°C
Available in 3mm
×
3mm
×
0.8mm DFN Package
The LTC
®
2051/LTC2052 are dual/quad zero-drift opera-
tional amplifiers available in the MS8 and SO-8/GN16 and
S14 packages. For space limited applications, the LTC2051
is available in a 3mm
×
3mm
×
0.8mm dual fine pitch
leadless package (DFN). They operate from a single 2.7V
supply and support
±5V
applications. The current con-
sumption is 750μA per op amp.
The LTC2051/LTC2052, despite their miniature size, fea-
ture uncompromising DC performance. The typical input
offset voltage and offset drift are 0.5μV and 10nV/°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 1V from the positive supply. The
LTC2051/LTC2052 also have an enhanced output stage
capable of driving loads as low as 2kΩ to both supply rails.
The open-loop gain is typically 140dB. The LTC2051/
LTC2052 also feature a 1.5μV
P-P
DC to 10Hz noise and a
3MHz gain-bandwidth product.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
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Thermocouple Amplifiers
Electronic Scales
Medical Instrumentation
Strain Gauge Amplifiers
High Resolution Data Acquisition
DC Accurate RC Active Filters
Low Side Current Sense
TYPICAL APPLICATIO
High Performance Low Cost Instrumentation Amplifier
2
R1
100Ω
0.1%
R2
10k
0.1%
5V
R2
10k
0.1%
Input Referred Noise 0.1Hz to 10Hz
1
–
μV
2
8
1
1/2
LTC2051HV
R1
100Ω
0.1%
0
6
–
–V
IN
3
+
V
IN
5
1/2
LTC2051HV
4
–5V
7
A
V
= 101
20512 TA01
–1
+
–2
0
2
4
6
TIME (SEC)
8
10
2052 TA02
U
20512fd
U
U
1
LTC2051/LTC2052
ABSOLUTE
AXI U
RATI GS
Total Supply Voltage (V
+
to V
–
)
LTC2051/LTC2052 .................................................. 7V
LTC2051HV/LTC2052HV ....................................... 12V
Input Voltage (Note 5) .......... (V
+
+ 0.3V) to (V
–
– 0.3V)
Output Short-Circuit Duration ......................... Indefinite
PACKAGE/ORDER I FOR ATIO
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
–
4
8
V
+
OUT B
–IN B
+IN B
OUT A
–IN A
+IN A
V
–
9
7
6
5
1
2
3
4
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 160°C/W
EXPOSED PAD (PIN 9) IS CONNECTED TO V
–
(PIN 4)
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 250°C/W
ORDER PART
NUMBER*
LTC2051CDD
LTC2051IDD
LTC2051HVCDD
LTC2051HVIDD
DD PART
MARKING
LAAN
LAEL
ORDER PART
NUMBER
LTC2051CMS8
LTC2051IMS8
LTC2051HVCMS8
LTC2051HVIMS8
LTC2051HMS8
LTC2051HVHMS8
8
7
6
5
V
+
OUT B
–IN B
+IN B
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
–
4
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 125°C,
θ
JA
= 190°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.
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
8
7
6
5
V
+
OUT B
–IN B
+IN B
OUT A
–IN A
+IN A
V
–
SHDN A
1
2
3
4
5
TOP VIEW
10
9
8
7
6
V
+
OUT B
–IN B
+IN B
SHDN B
MS10 PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 250°C/W
MS8 PART
MARKING
LTMN
LTMP
LTPJ
LTPK
LTVF
LTVH
ORDER PART
NUMBER
LTC2051CMS10
LTC2051IMS10
LTC2051HVCMS10
LTC2051HVIMS10
MS10 PART
MARKING
LTMQ
LTMR
LTRB
LTRC
ORDER PART
NUMBER
LTC2051CS8
LTC2051IS8
LTC2051HVCS8
LTC2051HVIS8
LTC2051HS8
LTC2051HVHS8
S8 PART
MARKING
2051
2051I
2051HV
051HVI
2051H
051HVH
20512fd
LTC2051/LTC2052
PACKAGE/ORDER I FOR ATIO
TOP VIEW
OUT A
–IN A
+IN A
V
+
+IN B
–IN B
OUT B
NC
1
2
3
4
5
6
7
8
16 OUT D
15 –IN D
14 +IN D
13 V
–
12 +IN C
11 –IN C
10 OUT C
9
NC
ORDER PART
NUMBER
LTC2052CGN
LTC2052IGN
LTC2052HVCGN
LTC2052HVIGN
LTC2052HGN
LTC2052HVHGN
GN PART MARKING
2052
2052I
2052HV
052HVI
2052H
052HVH
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
+
4
+IN B 5
–IN B 6
OUT B 7
14 OUT D
13 –IN D
12 +IN D
11 V
–
10 +IN C
9
8
–IN C
OUT C
GN PACKAGE
16-LEAD PLASTIC SSOP
T
JMAX
= 125°C,
θ
JA
= 110°C/W
AVAILABLE OPTIO S
PART NUMBER
LTC2051CDD
LTC2051CS8
LTC2051CMS8
LTC2051CMS10
LTC2051HVCDD
LTC2051HVCS8
LTC2051HVCMS8
LTC2051HVCMS10
LTC2051IDD
LTC2051IS8
LTC2051IMS8
LTC2051IMS10
LTC2051HVIDD
LTC2051HVIS8
LTC2051HVIMS8
LTC2051HVIMS10
LTC2051HS8
LTC2051HMS8
LTC2051HVHS8
LTC2051HVHMS8
LTC2052CS
LTC2052CGN
LTC2052HVCS
LTC2052HVCGN
AMPS/PACKAGE
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
4
4
4
4
SPECIFIED TEMP RANGE
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
SPECIFIED VOLTAGE
3V, 5V
3V, 5V
3V, 5V
3V, 5V
3V, 5V,
±5V
3V, 5V,
±5V
3V, 5V,
±5V
3V, 5V,
±5V
3V, 5V
3V, 5V
3V, 5V
3V, 5V
3V, 5V,
±5V
3V, 5V,
±5V
3V, 5V,
±5V
3V, 5V,
±5V
3V, 5V
3V, 5V
3V, 5V,
±5V
3V, 5V,
±5V
3V, 5V
3V, 5V
3V, 5V,
±5V
3V, 5V,
±5V
PACKAGE
DD
SO-8
8-Lead MSOP
10-Lead MSOP
DD
SO-8
8-Lead MSOP
10-Lead MSOP
DD
SO-8
8-Lead MSOP
10-Lead MSOP
DD
SO-8
8-Lead MSOP
10-Lead MSOP
SO-8
8-Lead MSOP
SO-8
8-Lead MSOP
14-Lead SO
16-Lead SSOP
14-Lead SO
16-Lead SSOP
20512fd
U
ORDER PART
NUMBER
LTC2052CS
LTC2052IS
LTC2052HVCS
LTC2052HVIS
LTC2052HS
LTC2052HVHS
S PACKAGE
14-LEAD PLASTIC SO
W
U
T
JMAX
= 125°C,
θ
JA
= 110°C/W
U
3
LTC2051/LTC2052
AVAILABLE OPTIO S
PART NUMBER
LTC2052IS
LTC2052IGN
LTC2052HVIS
LTC2052HVIGN
LTC2052HS
LTC2052HGN
LTC2052HVHS
LTC2052HVHGN
AMPS/PACKAGE
4
4
4
4
4
4
4
4
SPECIFIED TEMP RANGE
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
SPECIFIED VOLTAGE
3V, 5V
3V, 5V
3V, 5V,
±5V
3V, 5V,
±5V
3V, 5V
3V, 5V
3V, 5V,
±5V
3V, 5V,
±5V
PACKAGE
14-Lead SO
16-Lead SSOP
14-Lead SO
16-Lead SSOP
14-Lead SO
16-Lead SSOP
14-Lead SO
16-Lead SSOP
ELECTRICAL CHARACTERISTICS
(LTC2051/LTC2052, LTC2051HV/LTC2052HV) 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)
LTC2051C/LTC2052C
LTC2051I/LTC2052I
MIN
TYP
MAX
±0.5
±3
0.01
±0.03
50
±8
±50
±100
±25
±75
±150
±100
±150
±150
±200
1.5
115
130
110
130
120
130
115
130
120
130
115
130
120
140
115
140
125
140
120
140
+
– 0.15 V
+
– 0.06
V
V
+
– 0.05 V
+
– 0.02
2
15
2
15
2
3
0.75
1.0
0.85
1.2
2
5
4
10
LTC2051H/LTC2052H
MIN
TYP
MAX
±0.5
±3
0.01
±0.05
50
±8
±50
±3000
±25
±75
±3000
±100
±700
±150
±700
1.5
115
130
110
130
120
130
115
130
120
130
115
130
120
140
115
140
125
140
120
140
+
– 0.15 V
+
– 0.06
V
V
+
– 0.05 V
+
– 0.02
2
15
2
15
2
3
0.75
1.1
0.85
1.3
2
5
4
10
PARAMETER
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current (Note 4)
Input Offset Current (Note 4)
Input Noise Voltage
Common Mode Rejection Ratio
Power Supply Rejection Ratio
●
Large-Signal Voltage Gain
Output Voltage Swing High
Output Voltage Swing Low
Slew Rate
Gain Bandwidth Product
Supply Current (Per Amplifier)
Supply Current, Shutdown
4
U
CONDITIONS
(Note 2)
(Note 2)
V
S
= 3V
V
S
= 3V
V
S
= 5V
V
S
= 5V
V
S
= 3V
V
S
= 3V
V
S
= 5V
V
S
= 5V
R
S
= 100Ω, DC to 10Hz
V
CM
= GND to V
+
– 1.3,
V
S
= 3V
V
CM
= GND to V
+
– 1.3,
V
S
= 5V
●
●
●
●
●
●
●
R
L
= 10k, V
S
= 3V
R
L
= 10k, V
S
= 5V
R
L
= 2k to GND
R
L
= 10k to GND
R
L
= 2k to GND
R
L
= 10k to GND
●
●
●
●
●
●
No Load, V
S
= 3V, V
SHDN
= V
IH
No Load, V
S
= 5V, V
SHDN
= V
IH
V
SHDN
= V
IL
, V
S
= 3V
V
SHDN
= V
IL
, V
S
= 5V
●
●
●
●
UNITS
μV
μV/°C
nV/√mo
pA
pA
pA
pA
pA
pA
pA
pA
μV
P-P
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
V
V
mV
mV
V/μs
MHz
mA
mA
μA
μA
20512fd
LTC2051/LTC2052
ELECTRICAL CHARACTERISTICS
(LTC2051/LTC2052, LTC2051HV/LTC2052HV) 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)
LTC2051C/LTC2052C
LTC2051I/LTC2052I
MIN
TYP
MAX
V
–
+ 0.5
+
– 0.5
V
–1
–3
–2
–5
7.5
LTC2051H/LTC2052H
MIN
TYP
MAX
V
–
+ 0.5
+
– 0.5
V
–1
–3
–2
–5
7.5
PARAMETER
Shutdown Pin Input Low Voltage (V
IL
)
Shutdown Pin Input High Voltage (V
IH
)
Shutdown Pin Input Current
Internal Sampling Frequency
CONDITIONS
●
●
V
SHDN
= V
IL
, V
S
= 3V
V
SHDN
= V
IL
, V
S
= 5V
●
●
UNITS
V
V
μA
μA
kHz
(LTC2051HV/LTC2052HV) 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)
LTC2051C/LTC2052C
LTC2051I/LTC2052I
MIN
TYP
MAX
±1
±3
0.01
±0.03
50
±90
±150
±300
±300
±500
1.5
125
130
120
130
120
130
115
130
125
140
120
140
±4.75
±4.92
±4.90
±4.98
2
3
1
1.5
15
30
–
+ 0.5
V
+
– 0.5
V
–7
–15
7.5
LTC2051H/LTC2052H
MIN
TYP
MAX
UNITS
±1
±3
μV
0.01
±0.05
μV/°C
50
nV/√mo
±90
±150
pA
±3000
pA
±300
pA
±700
pA
1.5
μV
P-P
125
130
dB
120
130
dB
120
130
dB
115
130
dB
125
140
dB
120
140
dB
±4.50
±4.92
V
±4.85
±4.98
V
2
V/μs
3
MHz
1
1.5
mA
15
30
μA
–
+ 0.5
V
V
+
– 0.5
V
V
–7
– 15
μA
7.5
kHz
PARAMETER
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current (Note 4)
Input Offset Current (Note 4)
CONDITIONS
(Note 2)
(Note 2)
●
●
●
Input Noise Voltage
Common Mode Rejection Ratio
Power Supply Rejection Ratio
R
S
= 100Ω, DC to 10Hz
V
CM
= V
–
to V
+
– 1.3
●
●
Large-Signal Voltage Gain
Maximum Output Voltage Swing
Slew Rate
Gain Bandwidth Product
Supply Current (Per Amplifier)
Supply Current, Shutdown
Shutdown Pin Input Low Voltage (V
IL
)
Shutdown Pin Input High Voltage (V
IH
)
Shutdown Pin Input Current
Internal Sampling Frequency
R
L
= 10k
R
L
= 2k to GND
R
L
= 10k to GND
●
●
●
No Load, V
SHDN
= V
IH
V
SHDN
= V
IL
●
●
●
●
V
SHDN
= V
IL
●
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:
These parameters are guaranteed by design. Thermocouple effects
preclude measurements of these voltage levels during automated testing.
Note 3:
All versions of the LTC2051/LTC2052 are designed, characterized
and expected to meet the extended temperature limits of –40°C and 125°C.
The LTC2051C/LTC2052C/LTC2051HVC/LTC2052HVC are guaranteed to
meet the temperature limits of 0°C and 70°C. The LTC2051I/LTC2052I/
LTC2051HVI/LTC2052HVI are guaranteed to meet temperature limits of –
40°C and 85°C. The LTC2051H/LTC2051HVH and LTC2052H/LTC2052HVH
are guaranteed to meet the temperature limits of – 40°C and 125°C.
Note 4:
The bias current measurement accuracy depends on the proximity of
the negative supply bypass capacitors to the device under test. Because of
this, only the bias current of channel B (LTC2051) and channels A and B
(LTC2052) are 100% tested to the data sheet specifications. The bias
currents of the remaining channels are 100% tested to relaxed limits,
however, their values are guaranteed by design to meet the data sheet limits.
Note 5:
This parameter is guaranteed to meet specified performance
through design and characterization. It has not been tested.
Note 6:
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.
20512fd
5
嵌入式系统
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