ltc1100 Linear Technology Corporation, ltc1100 Datasheet

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ltc1100

Manufacturer Part Number
ltc1100
Description
Precision, Zero-drift Instrumentation Amplifier
Manufacturer
Linear Technology Corporation
Datasheet

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FEATURES
APPLICATIO S
TYPICAL APPLICATIO
Offset Voltage: 10µV Max
Offset Voltage Drift: 100nV/°C Max
Bias Current: 65pA Max
Offset Current: 65pA Max
Gain Nonlinearity: 20ppm Max
Gain Error: ±0.075% Max
CMRR: 90dB
0.1Hz to 10Hz Noise: 1.9µV
Single 5V Supply Operation
8-Pin MiniDIP
Thermocouple Amplifiers
Strain Gauge Amplifiers
Differential to Single-Ended Converters
U
P-P
U
Single 5V Supply, DC Instrumentation Amplifier
V
OUT
–V
IN
= 100 [V
1
2
3
4
IN
– (–V
LTC1100
IN
)]
DESCRIPTIO
The LTC
using zero-drift techniques to achieve outstanding DC
performance. The input DC offset is typically 1µV while
the DC offset drift is typically 5nV/°C; a very low bias
current of 65pA is also achieved.
The LTC1100 is self-contained; that is, it achieves a differ-
ential gain of 100 without any external gain setting resistor
or trim pot. The gain linearity is 20ppm and the gain drift is
4ppm/°C. The LTC1100 operates from a single 5V supply
up to ±8V. The output typically swings 300mV from its
power supply rails with a 10k load.
An optional external capacitor can be added from Pin 7 to
Pin 8 to tailor the device’s 18kHz bandwidth and to
eliminate any unwanted noise pickup.
The LTC1100 is also offered in a 16-pin surface mount
package with selectable gains of 10 or 100.
The LTC1100 is manufactured using Linear Technology’s
enhanced LTCMOS
LTCMOS is a trademark of Linear Technology Corporation
, LTC and LT are registered trademarks of Linear Technology Corporation.
8
7
6
5
®
Instrumentation Amplifier
V
1100 is a high precision instrumentation amplifier
IN
0.01µF
0.1µF
LTC1100 • TA01
V
+
= 5V
V
OUT
U
TM
Precision, Zero-Drift
silicon gate process.
LTC1100
1100fc
1

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ltc1100 Summary of contents

Page 1

... The input DC offset is typically 1µV while the DC offset drift is typically 5nV/°C; a very low bias current of 65pA is also achieved. The LTC1100 is self-contained; that is, it achieves a differ- ential gain of 100 without any external gain setting resistor or trim pot. The gain linearity is 20ppm and the gain drift is 4ppm/° ...

Page 2

... LTC1100 ABSOLUTE AXI U RATI GS Operating Temperature Range LTC1100M/AM (OBSOLETE) ........... −55°C to 125°C LTC1100C ......................................... −40°C to 85°C Output Short Circuit Duration ......................... Indefinite U PACKAGE/ORDER I FOR ATIO TOP VIEW GND REF OUT CMRR 2 7 COMP – – ...

Page 3

... CM Power Supply Rejection Ratio V = ±2.375V to ±8V S The denotes the specifications which apply over the full operating = 25° ± ± ± ± ± 5V 10k LTC1100AMJ (Note 4) MIN TYP 0.01 3 ±1 ±5 = 25°C 1 100 115 = ±8V – 7 ± ...

Page 4

... Gain Nonlinearity vs Temperature 25 210 V = ± 50k 180 L 20 150 15 120 –30 –5 1M –50 – TEMPERATURE (°C) UNITS kHz kHz kHz 90R 2.5k LTC1100 • BD02 75 100 125 LTC1100 • TPC03 1100fc ...

Page 5

... LOAD RESISTANCE (kΩ) LTC1100 • TPC08 Voltage Noise vs Frequency 105 100 1k 10k 100k FREQUENCY (Hz) LTC1100 • TPC11 LTC1100 Common Mode Range vs Supply Voltage 25° –2 –4 –6 –8 ±2 ±3 ±4 ±5 ±6 ± ...

Page 6

... LTC1100 • TPC17 suppressed by using the COMP pin. The standard com- pensation circuit is a capacitor from COMP provide an RC pole with the internal 247k resistor (22.5k for LTC1100CS in gain-of-10 mode). See the Applications section. Pin 8 (15) V OUT 16-Pin SO Package Only ( 10: Short to pin (2) for gain of 10 ...

Page 7

... Figure 1. Improving AC CMRR Overcompensation Many instrumentation amplifier applications process DC or low frequency signals only; consequently, the 18kHz (180kHz for G = 10) bandwidth of the LTC1100 can be reduced to minimize system errors or reduce transmitted clock noise by using the COMP pin. A feedback cap from COMP to V will react with the 247k internal resistor OUT (22 ...

Page 8

... LTC1100 PACKAGE DESCRIPTIO .300 BSC CORNER LEADS OPTION (7.62 BSC) .008 – .018 0° – 15° .045 – .068 (0.203 – 0.457) (1.143 – 1.650) FULL LEAD OPTION NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .300 – .325 (7.620 – 8.255) .008 – ...

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