LTC2055HDD#TR [Linear]
LTC2055 - Dual Micropower Zero-Drift Operational Amplifiers; Package: DFN; Pins: 8; Temperature Range: -40°C to 125°C;
| 型号： | LTC2055HDD#TR |
| 厂家： | 
Linear |
| 描述： | LTC2055 - Dual Micropower Zero-Drift Operational Amplifiers; Package: DFN; Pins: 8; Temperature Range: -40°C to 125°C 运算放大器 |
| 文件： | 总12页 (文件大小：187K) |
| 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
U
FEATURES
DESCRIPTIO
The LTC®2054/LTC2055 are low power, low noise single/
dualzero-driftoperationalamplifiersavailableintheSOT-23
(ThinSOTTM) 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.
■
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)
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.
■
Noise: 1.6µVP-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 × 0U.8mm DFN Packages
Theinputcommonmodevoltagerangesfromthenegative
supply up to typically 0.5V from the positive supply. The
open-loop gain is typically 140dB. The LTC2054/LTC2055
also feature a 1.6µVP-P DC to 10Hz noise and a 500kHz
gain-bandwidth product.
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
■
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation
■
■
■
■
U
TYPICAL APPLICATIO
Supply Current (per Amplifier)
250
225
200
–48V Low Side Precision Current Sense
10k
1%
Q1
0.1µF
ZETEX
175
ZVN3320F
LTC2054
150
5V
100Ω
–
125
100
75
50
25
0
LTC2055
1%
0.01µF
–
39k
V
OUT
= 100V
SENSE
LTC2054
LTC2054
+
+
0.1µF
100Ω
BZX84C5V1
V
Z
= 5.1
0.003Ω
1% 3W
–40 –15
5
25
45
70
85
125
–48V SUPPLY
–48V LOAD
TEMPERATURE (°C)
20545 TA01
+
–
20545 TA01b
I
, V
SENSE SENSE
sn20545 20545fas
1
LTC2054/LTC2055
W W
U W
ABSOLUTE AXI U RATI GS
(Note 1)
Total Supply Voltage (V+ to V–)
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
LTC2054/LTC2055 .................................................. 7V
LTC2054HV/LTC2055HV ....................................... 12V
Input Voltage ........................ (V+ + 0.3V) to (V – – 0.3V)
Input Current ...................................................... ±10mA
Output Short-Circuit Duration......................... Indefinite
U W
U
PACKAGE/ORDER I FOR ATIO
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
–
V
+IN 3
4 –IN
MS8 PACKAGE
S5 PACKAGE
DD PACKAGE
8-LEAD PLASTIC MSOP
5-LEAD PLASTIC SOT-23
8-LEAD (3mm × 3mm) PLASTIC DFN
UNDERSIDE METAL INTERNALLY
TJMAX = 150°C, θJA = 200°C/W
–
TJMAX = 150°C, θJA = 250°C/W
CONNECTED TO V
(PCB CONNECTION OPTIONAL)
TJMAX = 125°C, θJA = 160°C/W, NOTE 5
ORDER PART
NUMBER*
DD PART
MARKING
ORDER PART
NUMBER*
S5 PART
MARKING
ORDER PART
NUMBER*
MS8 PART
MARKING
LBCW
LBCX
LBCW
LBCX
LBCW
LBCX
LTC2055CDD
LTC2055HVCDD
LTC2055IDD
LTC2055HVIDD
LTC2055HDD
LTC2055HVHDD
LTBCR
LTBCT
LTBCR
LTBCT
LTBCR
LTBCT
LTC2054CS5
LTC2054HVCS5
LTC2054IS5
LTC2054HVIS5
LTC2054HS5
LTC2054HVHS5
LTAGB
LTAGD
LTAGB
LTAGD
LTAGB
LTAGD
LTC2055CMS8
LTC2055HVCMS8
LTC2055IMS8
LTC2055HVIMS8
LTC2055HMS8
LTC2055HVHMS8
*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
unless otherwise noted. (Note 3)
(LTC2054/LTC2055, LTC2054HV/LTC2055HV) The ● denotes the
specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V, 5V
LTC2054C/LTC2055C
LTC2054I/LTC2055I
LTC2054H/LTC2055H
SYMBOL
PARAMETER
CONDITIONS
No Load, V = 3V
MIN
TYP
140
150
130
135
±0.5
0.02
50
MAX
MIN
TYP
140
150
130
135
±0.5
0.02
50
MAX
180
UNITS
µA
I
Supply Current (LTC2054)
●
●
●
●
175
175
150
150
±3
S
S
No Load, V = 5V
180
µA
S
I
Supply Current Per Amplifier
(LTC2055)
No Load, V = 3V
155
µA
S
S
No Load, V = 5V
155
µA
S
V
Input Offset Voltage
(Note 2)
(Note 2)
±3
µV
OS
∆V /∆T
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current (Note 4)
●
±0.03
±0.05
µV/°C
nV/√mo
OS
I
V = 3V
±1
±1
pA
pA
B
S
V = 3V
●
●
±150
±150
±3000
±3000
S
V = 5V
±1
±1
pA
pA
S
V = 5V
S
sn20545 20545fas
2
LTC2054/LTC2055
ELECTRICAL CHARACTERISTICS
unless otherwise noted. (Note 3)
(LTC2054/LTC2055, LTC2054HV/LTC2055HV) The ● denotes the
specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V, 5V
LTC2054C/LTC2055C
LTC2054I/LTC2055I
LTC2054H/LTC2055H
SYMBOL
PARAMETER
CONDITIONS
V = 3V
MIN
TYP
MAX
MIN
TYP
MAX
±700
±700
UNITS
I
Input Offset Current (Note 4)
±2
±2
pA
pA
OS
S
V = 3V
●
●
±300
±300
S
V = 5V
±2
±2
pA
pA
S
V = 5V
S
e
Input Noise Voltage
R = 100Ω, DC to 1Hz
0.6
1.6
0.6
1.6
µV
µV
n
S
P-P
P-P
R = 100Ω, DC to 10Hz
S
+
CMRR
Common Mode Rejection Ratio
V
= GND to V – 0.7V
115
110
130
130
130
135
140
2.89
4.83
2.99
115
110
130
130
130
135
140
2.89
4.83
2.99
dB
dB
CM
V = 3V
●
●
●
●
●
●
●
●
●
●
●
●
●
S
+
V
= GND to V – 0.7V
120
115
120
115
dB
dB
CM
V = 5V
S
PSRR
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V = 2.7V to 6V
S
120
115
120
115
dB
dB
A
V
R = 100k, V = 3V, V
= V /2
120
115
120
115
dB
dB
VOL
OUT
L
S
OUT
S
R = 100k, V = 5V, V
= V /2
125
120
125
120
dB
dB
L
S
OUT
S
Output Voltage Swing High
R = 5k to GND, V = 3V
2.87
2.85
2.87
2.84
V
V
L
S
R = 5k to GND, V = 3V
L
S
R = 5k to GND, V = 5V
4.80
4.75
4.80
4.70
V
V
L
S
R = 5k to GND, V = 5V
L
S
R = 100k to GND, V = 3V
2.98
2.975
2.98
2.97
V
V
L
S
R = 100k to GND, V = 3V
L
S
R = 100k to GND, V = 5V
4.985 4.99
4.980
4.985 4.99
4.970
V
V
L
L
S
S
R = 100k to GND, V = 5V
V
Output Voltage Swing Low
R = 5k to GND, V = 3V
2
2
2
2
8
3
3
3
3
8
mV
mV
OUT
L
S
R = 5k to GND, V = 3V
10
10
L
S
R = 5k to GND, V = 5V
8
10
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
L
S
S
R = 100k to GND, V = 3V
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
sn20545 20545fas
3
LTC2054/LTC2055
ELECTRICAL CHARACTERISTICS
unless otherwise noted. (Note 3)
(LTC2054HV/LTC2055HV) The ● denotes the specifications which apply
over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = ±5V
LTC2054HVC/LTC2055HVC
LTC2054HVI/LTC2055HVI
LTC2054HVH/LTC2055HVH
SYMBOL
PARAMETER
CONDITIONS
No Load (LTC2054)
No Load (LTC2055)
(Note 2)
MIN
TYP MAX
MIN
TYP MAX
UNITS
µA
I
I
Supply Current
●
●
175
150
210
180
±5
175
150
215
185
±5
S
S
Supply Current (Per Amplifier)
Input Offset Voltage
µA
V
±0.5
±0.5
µV
OS
∆V /∆T
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current (Note 4)
(Note 2)
●
0.025 ±0.03
0.025 ±0.05
µV/°C
nV/√mo
OS
50
50
I
I
±3
±3
pA
pA
B
●
●
±150
±3000
Input Offset Current (Note 4)
Input Noise Voltage
±6
±6
pA
pA
OS
±300
±700
e
R = 100Ω, DC to 1Hz
0.6
1.6
0.6
1.6
µV
P-P
µV
P-P
n
S
R = 100Ω, DC to 10Hz
S
+
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
120
115
130
130
140
dB
dB
CM
●
●
●
●
●
V = 2.7V to 11V
S
120
115
120
115
dB
dB
R = 100k, V
L
= GND
OUT
125
120
125
120
dB
dB
V
Maximum Output Voltage Swing R = 5k to GND
±4.78 ±4.82
±4.75
±4.78 ±4.82
±4.70
V
V
OUT
L
R = 5k to GND
L
R = 100k to GND
±4.98 ±4.99
±4.975
±4.98 ±4.99
±4.97
V
V
L
R = 100k to GND
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
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
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.
preclude measurements of these voltage levels during automated testing.
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 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
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.
sn20545 20545fas
4
LTC2054/LTC2055
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency
DC CMRR
vs Common Mode Input Range
PSRR vs Frequency
140
120
140
140
120
V = ±2.5V
S
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
S
= 3V
–PSRR
40
20
+PSRR
0
–20
–40
T
A
= 25°C
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
vs Load Current
Short-Circuit Output Current vs
Supply Voltage
+
+
+
+
5
4
6
4
V
V
V
V
V
= ±5V
V
S
= ±2.5V
= ±1.5V
S
S
– 0.5
– 1.0
– 1.5
I
SINK
3
V
= ±2.5V
+
V
= V
V
= ±5V
OUT
S
2
2
V
S
0
V
V
= ±1.5V
= ±1.5V
1
S
S
0
–2
–4
–6
–8
–10
– +
– +
– +
V
V
V
1.5
1.0
0.5
–1
–2
–3
–4
–5
V
= ±5V
S
4
V
= ±2.5V
S
I
V
= ±2.5V
= ±5V
SOURCE
S
–
V
= ±1.5V
V
= V
S
OUT
V
S
R
TO GND
L
–
V
1
2
5
0
3
0
2
4
6
3
4
5
7
8
9
10 11
6
+
–
LOAD RESISTANCE (kΩ)
TOTAL SUPPLY VOLTAGE, V TO V (V)
SOURCING OR SINKING LOAD CURRENT (mA)
20545 G06
20545 G04
20545 G14
Input Bias Current vs
Temperature
Input Bias Current vs Input
Common Mode Voltage
Gain/Phase vs Frequency
120
100
80
–60
10000
10000
1000
100
10
V
= ±2.5V
V
= ±2.5V
S
SUPPLY
V
R
= 0.5V
IN P-P
= 10kΩ
–80
PHASE
T
A
= 125°C
L
1000
100
10
–100
–120
–140
–160
–180
–200
–220
60
GAIN
40
T
A
= 85°C
20
T
A
= 70°C
V
= 10V
S
V
= 5V
25
0
S
1
1
T
A
= –40°C
T
A
= 25°C
C
L
C
L
C
L
= 30pF
= 50pF
= 100pF
V
= 3V
–20
S
–40
0.1
0.1
45
70
85
–40 –15
5
125
10
100
1k
10k 100k
1M
10M
0
0.5 1.0 1.5
2.5
3.5 4.0 4.5
3.0
2.0
FREQUENCY (Hz)
TEMPERATURE (°C)
COMMON MODE VOLTAGE (V)
20545 G07
20545 G08
20545 G09
sn20545 20545fas
5
LTC2054/LTC2055
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Transient Response
Output Overload Recovery
Output Overload Recovery
0.2
0
2.5
0
1
0
0
0
–1
–2.5
–0.2
A
= 1
10µs/DIV
A
= –100
= 100k
= ±2.5V
2ms/DIV
A = –100
V
2ms/DIV
V
L
L
S
V
L
R = 100k
R
R = 100k
L
C = 50pF
V
V
V
V = ±2.5V
S
S
20545 G10
20545 G11
20545 G12
= ±2.5V
= 10kHz 2V
IN
P-P
LTC2054 Supply Current vs
Supply Voltage
Common Mode Input Range vs
Supply Voltage
LTC2054 Supply Current vs
Temperature
250
225
200
175
150
125
100
75
250
225
200
175
150
125
100
75
11
10
9
–40°C ≤ T = 125°C
A
V
= ±5V
S
8
V
= 5V
S
7
6
V
= 3V
S
5
4
3
50
50
2
25
25
1
0
0
0
–40 –15
5
25
45
70
TEMPERATURE (°C)
85
125
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10 11
TOTAL SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
20545 G16
20545 G15
20545 G13
LTC2055 Supply Current (Per
Amplifier) vs Supply Voltage
LTC2055 Supply Current (Per
Amplifier) vs Temperature
Noise Spectrum
100
90
80
70
60
50
40
30
20
10
0
250
225
200
175
150
125
100
75
250
225
200
175
150
125
100
75
V
= ±5V
S
V
= 5V
S
V
= 3V
S
50
50
A
V
= 100
= ±2.5V
25
25
V
S
0
0
0
1
2
3
4
5
6
7
8
9
10
10
100
1k
10k
–40 –15
5
25
45
70
TEMPERATURE (°C)
85
125
FREQUENCY (Hz)
TOTAL SUPPLY VOLTAGE (V)
20545 G19
20545 G18
20545 G17
sn20545 20545fas
6
LTC2054/LTC2055
TEST CIRCUITS
Electrical Characteristics
Test Circuit
100k
OUTPUT
+
V
10Ω
–
LTC2054/55
+
R
L
–
V
2054 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
+
2054 TC02
FOR 1Hz NOISE BW INCREASE ALL THE CAPACITORS BY A FACTOR OF 10.
sn20545 20545fas
7
LTC2054/LTC2055
W U U
U
APPLICATIO S I FOR ATIO
Clock Feedthrough, Input Bias Current
The second form of clock feedthrough is caused by the
small amount of charge injection occurring during the
sampling and holding of the op amp’s input offset voltage.
The current spikes are multiplied by the impedance seen
at the input terminals of the op amp, appearing at the
outputmultipliedbytheclosedloopgainoftheopamp. 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
10k,thisformofclockfeedthroughislessthantheamount
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.
The first form of clock feedthrough is caused by the
settling of the internal sampling capacitor and is input
referred; that is, it is multiplied by the closed loop gain of
theopamp. Thisformofclockfeedthroughisindependent
of the magnitude of the input source resistance or the
magnitude of the gain setting resistors. The LTC2054/
LTC2055 have a residue clock feedthrough of less then
0.2µVRMS input referred at 1.0kHz.
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
LTC2054/LTC2055 DC to 1Hz Noise
0.4µV
2054 G16
10 SEC
LTC2054/LTC2055 DC to 10Hz Noise
1µV
2054 G17
1 SEC
sn20545 20545fas
8
LTC2054/LTC2055
W U U
APPLICATIO S I FOR ATIO
cause the second form of clock feedthrough described
above, whenaveraged, dominatetheDCinputbiascurrent
of the op amp below 70°C.
U
Voltage Follower with Input Exceeding
the Common Mode Range
2.5V
At temperatures above 70°C, the leakage of the ESD
protection 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. At elevated temperatures (above 70°C) the
leakage current begins to dominate and both the negative
and positive pins’ input bias currents are in the positive
direction (into the pins).
–
OUTPUT
LTC2054/55
1k
+
100k
±3.75V
P
SINE WAVE
–2.5V
2054 TA09
LTC2054/LTC2055
Extended Common Mode Range
Extended Common Mode Range
0V
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.
A
= 1
= 100k
= ±2.5V
500µs/DIV
V
L
R
V
V
S
IN
2054 G19
= 500Hz 7.5V
P-P
U
TYPICAL APPLICATIO S
Simple Differential Bridge Amplifier
5V
5V
0.1µF
1µF
LT1790-2.5
499k
5
4
3
10kΩ
BRIDGE
–
1
A
= 100
LTC2054HV
V
+
2
0.1µF
499k
–5V
20545 TA02
sn20545 20545fas
9
LTC2054/LTC2055
U
TYPICAL APPLICATIO S
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
4
3
SET
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
2054 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
sn20545 20545fas
10
LTC2054/LTC2055
U
PACKAGE DESCRIPTIO
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698)
R = 0.115
0.38 ± 0.10
TYP
5
8
0.675 ±0.05
NOTE:
3.5 ±0.05
2.15 ±0.05 (2 SIDES)
1.65 ±0.05
1. DRAWING TO BE MADE A JEDEC PACKAGE
OUTLINE M0-229 VARIATION OF (WEED-1)
2. DRAWING NOT TO SCALE
3.00 ±0.10 1.65 ± 0.10
(4 SIDES)
(2 SIDES)
PIN 1
TOP MARK
(NOTE 6)
PACKAGE
OUTLINE
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
4
1
0.25 ± 0.05
0.15mm ON ANY SIDE
0.25 ± 0.05
0.75 ±0.05
0.200 REF
0.50
BSC
2.38 ±0.05
(2 SIDES)
5. EXPOSED PAD SHALL BE SOLDER PLATED
0.50 BSC
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1
2.38 ±0.10
(2 SIDES)
LOCATION ON TOP AND BOTTOM OF PACKAGE
0.00 – 0.05
BOTTOM VIEW—EXPOSED PAD
(DD8) DFN 1203
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660)
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
0.52
(.0205)
REF
0.889 ± 0.127
(.035 ± .005)
8
7 6
5
5.23
(.206)
MIN
3.00 ± 0.102
(.118 ± .004)
(NOTE 4)
4.90 ± 0.152
(.193 ± .006)
3.20 – 3.45
(.126 – .136)
DETAIL “A”
0° – 6° TYP
NOTE:
0.254
(.010)
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
GAUGE PLANE
0.65
(.0256)
BSC
0.42 ± 0.038
1
2
3
4
(.0165 ± .0015)
0.53 ± 0.152
(.021 ± .006)
TYP
1.10
(.043)
MAX
0.86
(.034)
REF
RECOMMENDED SOLDER PAD LAYOUT
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.22 – 0.38
(.009 – .015)
TYP
0.127 ± 0.076
(.005 ± .003)
0.65
(.0256)
BSC
MSOP (MS8) 0603
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
0.62
MAX
0.95
REF
2.80 – 3.10
(NOTE 4)
1.22 REF
1.4 MIN
NOTE:
1.50 – 1.75
(NOTE 4)
2.60 – 3.00
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3.85 MAX 2.62 REF
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. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ)
PIN ONE
ATTENTION: ORIGINAL SOT23-5L PACKAGE.
MOST SOT23-5L PRODUCTS CONVERTED TO THIN SOT23
PACKAGE, DRAWING # 05-08-1635 AFTER APPROXIMATELY
APRIL 2001 SHIP DATE
0.25 – 0.50
TYP 5 PLCS
NOTE 3
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.95 BSC
0.90 – 1.30
0.09 – 0.20
(NOTE 3)
0.20 BSC
DATUM ‘A’
0.00 – 0.15
0.90 – 1.45
0.35 – 0.55 REF
1.90 BSC
S5 SOT-23 0502
sn20545 20545fas
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 represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
11
LTC2054/LTC2055
U
TYPICAL APPLICATIO S
Low Power, Bidirectional 60V Precision Hi Side Current Sense
POSITIVE SENSE
10mΩ
+
–
5
3
BAT54
V
SENSE
1
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
100Ω
0.1µF
1µF
12.4k
33Ω
2
–
7
+
V
2N5401
1
V
8
5
6
S
S
V
= 2.5V
ON 5V
OFF 0V
OUT
MPSA42
35.7k
PRECISION
POWER SUPPLY
(NOTE: POSITIVE
CURRENT SENSE
INCLUDES CIRCUIT
SUPPLY CURRENT)
+1000* V
SENSE
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
100k
OPEN
t = t
S1
O
1Ω
0.15µF
10µF
GAIN = 0.1V/µA
~10pA RESOLUTION
5V
5V
5
50µA FULL SCALE
1k
4
3
5
1MΩ
–
4
3
V
IN
2k
–
1
t
ANY
PHOTODIODE
LTC2054
V
(t)
1
IN
dt
LTC2054HV
∫
10sec
0.01µF
t
O
+
2
+
2
20545 TA08
–5V
20545 TA07
–5V
RELATED PARTS
PART NUMBER
LTC1049
DESCRIPTION
COMMENTS
Low Supply Current 200µA
Low Power Zero-Drift Op Amp
Precision Zero-Drift Op Amp
LTC1050
Single Supply Operation 4.75V to 16V, Noise Tested and Guaranteed
Dual/Quad Version of the LTC1050
LTC1051/LTC1053 Precision Zero-Drift Op Amp
LTC1150
LTC1152
LT1677
±15V Zero-Drift Op Amp
High Voltage Operation ±18V
Rail-to-Rail Input and Output Zero-Drift Op Amp
Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown
Low Noise Rail-to-Rail Input and Ouptput
Precision Op Amp
V
= 90µV, V = 2.7V to 44V
S
OS
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 Dual/Quad Zero-Drift Op Amp
LTC2053
Zero-Drift Instrumentation Amp
sn20545 20545fas
LT/TP 0404 1K REV A • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
12
●
●
©LINEAR TECHNOLOGY CORPORATION 2004
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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