Datasheet Texas Instruments INA116UA — Datenblatt

В® INA116 INA 116 INA 116 Ultra Low Input Bias Current
INSTRUMENTATION AMPLIFIER
FEATURES DESCRIPTION в—Џ LOW INPUT BIAS CURRENT: 3fA typ The INA116 is a complete monolithic FET-input instrumentation amplifier with extremely low input bias
current. Difet В® inputs and special guarding techniques
yield input bias currents of 3fA at 25В°C, and only 25fA
at 85В°C. Its 3-op amp topology allows gains to be set
from 1 to 1000 by connecting a single external resistor. в—Џ BUFFERED GUARD DRIVE PINS
в—Џ LOW OFFSET VOLTAGE: 2mV max
в—Џ HIGH COMMON-MODE REJECTION:
84dB (G = 10)
в—Џ LOW QUIESCENT CURRENT: 1mA Guard pins adjacent to both input connections can be
used to drive circuit board and input cable guards to
maintain extremely low input bias current. в—Џ INPUT OVER-VOLTAGE PROTECTION: В±40V The INA116 is available in 16-pin plastic DIP and SOL-16
surface-mount packages, specified for the –40°C to +85°C
temperature range. APPLICATIONS
в—Џ LABORATORY INSTRUMENTATION
в—Џ pH MEASUREMENT
● ION–SPECIFIC PROBES
в—Џ LEAKAGE CURRENT MEASUREMENT V+
13 2 Guard INA116 –
VIN 3 Over-Voltage
Protection +1
A1 4 Guard 60kΩ 1 60kΩ G=1+ 50kΩ …