LTC2053-SYNC LINER [Linear Technology], LTC2053-SYNC Datasheet

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LTC2053-SYNC

Manufacturer Part Number
LTC2053-SYNC
Description
Precision, Rail-to-Rail,Zero-Drift, Resistor-Programmable Instrumentation Amplifier
Manufacturer
LINER [Linear Technology]
Datasheet
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
116dB CMRR Independent of Gain
Maximum Offset Voltage: 10µV
Maximum Offset Voltage Drift: 50nV/°C
Rail-to-Rail Input
Rail-to-Rail Output
2-Resistor Programmable Gain
Supply Operation: 2.7V to ±5.5V
Typical Noise: 2.5µV
Typical Supply Current: 750µA
LTC2053-SYNC Allows Synchronization to
External Clock
Available in MS8 and 3mm × 3mm × 0.8mm
DFN Packages
Thermocouple Amplifiers
Electronic Scales
Medical Instrumentation
Strain Gauge Amplifiers
High Resolution Data Acquisition
Differential Bridge Amplifier
R < 10k
3V
U
2
3
P-P
+
LTC2053
1, 4
8
(0.01Hz to 10Hz)
5
0.1µF
6
R1
10Ω
R2 10k
0.1µF
7
U
OUT
GAIN = 1+
2053 TA01
Zero-Drift, Resistor-Programmable
R2
R1
DESCRIPTIO
All other trademarks are the property of their respective owners.
The LTC
fier. The CMRR is typically 116dB with a single or dual 5V
supply and is independent of gain. The input offset voltage
is guaranteed below 10µV with a temperature drift of less
than 50nV/°C. The LTC2053 is easy to use; the gain is
adjustable with two external resistors, like a traditional
op amp.
The LTC2053 uses charge balanced sampled data tech-
niques to convert a differential input voltage into a single
ended signal that is in turn amplified by a zero-drift
operational amplifier.
The differential inputs operate from rail-to-rail and the
single ended output swings from rail-to-rail. The LTC2053
can be used in single supply applications, as low as 2.7V.
It can also be used with dual ±5.5V supplies. The LTC2053
requires no external clock, while the LTC2053-SYNC has
a CLK pin to synchronize to an external clock.
The LTC2053 is available in an MS8 surface mount pack-
age. For space limited applications, the LTC2053 is avail-
able in a 3mm × 3mm × 0.8mm dual fine pitch leadless
package (DFN).
, LTC and LT are registered trademarks of Linear Technology Corporation.
Instrumentation Amplifier
LTC2053/LTC2053-SYNC
®
2053 is a high precision instrumentation ampli-
–10
–15
15
10
–5
Typical Input Referred Offset vs Input
5
0
Precision, Rail-to-Rail,
0
Common Mode Voltage (V
V
V
T
S
REF
A
= 3V
= 25°C
INPUT COMMON MODE VOLTAGE (V)
0.5
= 0V
U
1.0
1.5
G = 1000
2.0
G = 10
2.5
S
G = 100
G = 1
2053 TA01b
= 3V)
3.0
2053syncfb
1

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LTC2053-SYNC Summary of contents

Page 1

... The LTC2053 can be used in single supply applications, as low as 2.7V. It can also be used with dual ±5.5V supplies. The LTC2053 requires no external clock, while the LTC2053-SYNC has a CLK pin to synchronize to an external clock. The LTC2053 is available in an MS8 surface mount pack- age. For space limited applications, the LTC2053 is avail- able in a 3mm × ...

Page 2

... The ● denotes the specifications which apply over the full operating + – = 25° 3V 0V, REF = 200mV. Output voltage swing is referenced LTC2053 = 1, LTC2053-SYNC = 200mV = – 40°C to 85°C = 85°C to 125°C = 1. 3V, LTC2053C, LTC2053C-SYNC 0.1V to 2.9V, LTC2053I, LTC2053I-SYNC CM ...

Page 3

... EN/CLK Pin Input High Voltage EN/CLK Pin Input Current V EN/CLK Internal Op Amp Gain Bandwidth Slew Rate Internal Sampling Frequency LTC2053/LTC2053-SYNC The ● denotes the specifications which apply over the full operating + – = 25° 3V 0V, REF = 200mV. Output voltage swing is referenced ...

Page 4

... LTC2053/LTC2053-SYNC ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER CONDITIONS Gain Error A V Gain Nonlinearity A V Input Offset Voltage (Note Average Input Offset Drift (Note Average Input Bias Current (Note Average Input Offset Current (Note ...

Page 5

... REF 85° 25°C A –20 – 125°C A –60 0 0.5 1.0 1.5 2.0 2.5 3.0 INPUT COMMON MODE VOLTAGE (V) 2053 G07 LTC2053/LTC2053-SYNC Input Offset Voltage vs Input Common Mode Voltage REF T = 25° 1000 100 – – – ...

Page 6

... LTC2053/LTC2053-SYNC W U TYPICAL PERFOR A CE CHARACTERISTICS Error Due to Input R vs Input S Common Mode (C < 100pF REF + – < 100pF 25° 10k S – 15k 20k SMALL C S –40 IN – ...

Page 7

... R = 10k 25° –2 –4 –6 –8 –10 –2.4 –1.9 –1.4 –0.9 –0.4 0.1 0.6 1.1 1.6 OUTPUT VOLTAGE (V) 2053 G25 LTC2053/LTC2053-SYNC Error Due to Input R Mismatch S vs Input Common Mode (C >1µF) IN 200 150 REF + – 25° 0k 100 + – ...

Page 8

... LTC2053/LTC2053-SYNC W U TYPICAL PERFOR A CE CHARACTERISTICS Input Voltage Noise Density vs Frequency 300 25°C A 250 V = ±5V S 200 150 100 100 1000 10000 FREQUENCY (Hz) 2053 G28 Output Voltage Swing vs Output Current 5 25° 5V, SOURCING A S 4.5 4.0 3 3V, SOURCING S 3 ...

Page 9

... REF *NOTE: PIN THE LTC2053 AND CLK ON THE LTC2053-SYNC Where V +IN pins respectively sample the positive supply voltage. For example, with a 3V single supply and 100mV ) trans- differential input voltage ...

Page 10

... LTC2053/LTC2053-SYNC U U APPLICATIO S I FOR ATIO Settling Time The sampling rate is 3kHz and the input sampling period during which C is charged to the input differential voltage approximately 150µs. First assume that on each IN input sampling period charged fully 1000pF), a change in the input will settle to N bits ...

Page 11

... LTC2053 sample clock rate of 3kHz, a 24kHz external clock should be applied to the CLK pin of the LTC2053-SYNC square wave is used to drive the CLK pin, a 5µs RC time constant should be placed in front of the CLK pin to maintain low offset voltage performance (see Figure 2) ...

Page 12

... LTC2053/LTC2053-SYNC U TYPICAL APPLICATIO S Precision Current Source 5V 2 – 8 LTC2053 R + REF 3 V OUT LOAD 10k V C Precision Doubler (General Purpose LTC2053 2 – 4 0.1µF 0.1µF –5V 12 (Low Noise 2.5V Reference) 1 LT1027 7 RG 1µF 6 0.1µF 2. — ≤ 5mA 0.1µ < V < (5V – V ...

Page 13

... U TYPICAL APPLICATIO S 0°C → 500°C TYPE K THERMOCOUPLE (40.6µV/°C) LTC2053/LTC2053-SYNC Differential Thermocouple Amplifier 10M 10M 10k 3 YELLOW 10k – ORANGE 2 1 0.001µF 0.001µF 5V THERMAL 0.1µF COUPLING – LTC2050 LT1025 – R 200k 4 5 High Side Power Supply Current Sense I 0.0015Ω ...

Page 14

... LTC2053/LTC2053-SYNC PACKAGE DESCRIPTIO 5.23 (.206) MIN 0.42 ± 0.038 (.0165 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) 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" ...

Page 15

... 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- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC2053/LTC2053-SYNC U DD Package 8-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1698) 0.675 ± ...

Page 16

... LTC2053/LTC2053-SYNC U TYPICAL APPLICATIO 1.21k PT100* 3-WIRE RTD RELATED PARTS PART NUMBER DESCRIPTION LT1167 Single Resistor Gain Programmable, Precision Instrumentation Amplifier LTC2050/LTC2051 Zero-Drift Single/Dual Operation Amplifier LTC2054/LTC2055 Zero-Drift µPower Operational Amplifier LTC6800 Single Supply, Zero Drift, Rail-to-Rail Input and Output Instrumentation ...

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