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LT1789IS8-10-TR

Description
Micropower, Single Supply Rail-to-Rail Output Instrumentation Amplifiers
File Size324KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet View All

LT1789IS8-10-TR Overview

Micropower, Single Supply Rail-to-Rail Output Instrumentation Amplifiers

FEATURES
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LT1789-1/LT1789-10
Micropower,
Single Supply Rail-to-Rail
Output Instrumentation Amplifiers
DESCRIPTION
The LT
®
1789-1/LT1789-10 are micropower, precision
instrumentation amplifiers that are optimized for single
supply operation from 2.2V to 36V. The quiescent current
is 95μA max, the inputs common mode to ground and the
output swings within 110mV of ground. The gain is set
with a single external resistor for a gain range of 1 to 1000
for the LT1789-1 and 10 to 1000 for the LT1789-10.
The high accuracy of the LT1789-1 (40ppm maximum non-
linearity and 0.25% max gain error) is unmatched by other
micropower instrumentation amplifiers. The LT1789-10
maximizes both the input common mode range and dynamic
output range when an amplification of 10 or greater is required,
allowing precise signal processing where other instrumenta-
tion amplifiers fail to operate. The LT1789-1/LT1789-10 are
laser trimmed for very low input offset voltage, low input
offset voltage drift, high CMRR and high PSRR. The output
can handle capacitive loads up to 400pF (LT1789-1), 1000pF
(LT1789-10) in any gain configuration while the inputs are
ESD protected up to 10kV (human body).
The LT1789-1/LT1789-10 are offered in the 8-pin SO
package, requiring significantly less PC board area than
discrete multi op amp and resistor designs.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
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Micropower: 95μA Supply Current Max
Low Input Offset Voltage: 100μV Max
Low Input Offset Voltage Drift: 0.5μV/°C Max
Single Gain Set Resistor:
G = 1 to 1000 (LT1789-1)
G = 10 to 1000 (LT1789-10)
Inputs Common Mode to V
Wide Supply Range: 2.2V to 36V Total Supply
CMRR at G = 10: 96dB Min
Gain Error: G = 10, 0.25% Max
Gain Nonlinearity: G = 10, 40ppm Max
Input Bias Current: 40nA Max
PSRR at G = 10: 100dB Min
1kHz Voltage Noise: 48nV/√Hz
0.1Hz to 10Hz Noise: 1.5μV
P-P
APPLICATIONS
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Portable Instrumentation
Bridge Amplifiers
Strain Gauge Amplifiers
Thermocouple Amplifiers
Differential to Single-Ended Converters
Medical Instrumentation
TYPICAL APPLICATION
0.5A to 4A Voltage Controlled Current Source
C1
4700pF
V
S
V
IN
R2
10k
V
S
= 3.3V TO 32V
V
IN
I
LOAD
=
R
SENSE
• 10
= 1A PER VOLT AS SHOWN
RISE TIME ≈ 250μs, 10% TO 90%,
1A TO 2A OUTPUT STEP INTO 0.25Ω LOAD
+
3
4
R1
90.9k
V
S
2
7
LT1636
5
6
C3
0.1μF
R3
100Ω
V
S
7
R4
10k
6
REF
1
5
4
8k
120Ω
TIP127*
+
3
8
3
1
2
4
* ENSURE ADEQUATE POWER
DISSIPATION CAPABILITY AT
HIGHER VOLTAGES,
CURRENTS AND DUTY CYCLES
R
SENSE
*
0.1Ω I
LOAD
LT1789-1
C2
3300pF
2
R
LOAD
*
1789 TA01
1789fc
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