INA118 Datasheet, PDF (1/29 Pages) Burr-Brown (TI) – Precision, Low Power INSTRUMENTATION AMPLIFIER

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INA118
SBOS027A – SEPTEMBER 2000 – REVISED JANUARY 2016
INA118 Precision, Low Power Instrumentation Amplifier
1 Features
•1 Low Offset Voltage: 50-µV Maximum
• Low Drift: 0.5-µV/°C Maximum
• Low Input Bias Current: 5-nA Maximum
• High CMR: 110-dB Minimum
• Inputs Protected to ±40 V
• Wide Supply Range: ±1.35 to ±18 V
• Low Quiescent Current: 350-µA
• 8-Pin Plastic DIP, SO-8
2 Applications
• Bridge Amplifiers
• Thermocouple Amplifiers
• RTD Sensor Amplifiers
• Medical Instrumentation
• Data Acquisition
3 Description
The INA118 is a low-power, general-purpose
instrumentation amplifier offering excellent accuracy.
The device's versatile, 3-op amp design and small
size make it ideal for a wide range of applications.
Current-feedback input circuitry provides wide
bandwidth, even at high gain (70 kHz at G = 100).
A single external resistor sets any gain from 1 to
10000. Internal input protection can withstand up to
±40 V without damage.
The INA118 is laser-trimmed for low offset voltage
(50 µV), drift (0.5 µV/°C), and high common-mode
rejection (110 dB at G = 1000). The INA118 operates
with power supplies as low as ±1.35 V, and quiescent
current is only 350 µA, making the device ideal for
battery-operated systems.
The INA118 is available in 8-pin plastic DIP and SO-8
surface-mount packages, specified for the –40°C to
+85°C temperature range.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA118
SOIC (8)
PDIP (8)
3.91 mm × 4.90 mm
6.35 mm × 9.81 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
V+
7
– _{2 Over-Voltage}
V_IN
Protection
1
R_G
8
+
3 Over-Voltage
V_IN
Protection
A₁
25kΩ
25kΩ
A₂
INA118
60kΩ
60kΩ
A₃
60kΩ
60kΩ
G = 1 + ^50kΩ
R_G
6
V_O
5
Ref
4
V–
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.