Micros sp.j.
W.Kędra i J.Lic
ul. E.Godlewskiego 38
30-198 Kraków
tel.: +48 12 636 95 66
fax.: +48 12 636 93 99
e-mail: biuro@micros.com.pl
| Wzmacniacze pomiarowe firmy: |  |
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| INA122PA INA122UA |
INA126PA INA126UA |
INA128PA INA128UA |
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Applications:
- data acquisition systems
- measurement instruments (temperature, pressure)
- medical instrumentation (ECG, EEG, EMG)
- portable devices
Datasheets: [INA122] [INA126] [INA128]
The INA122/126/128 are high performance instrumentation amplifiers for amplifying low-level and noisy signals from sensors and transducers. The basic part of instrumentation amplifier in a differential amplifier which is intended to amplify the difference between inputs and reject the signal that is common to the inputs. The circuits are composed of ] two (INA122/126) or three (INA128) operational amplifiers and a resistor network in the closed feedback loop. Gain can be set with a single external resistor. Laser trimmed input circuitry provides low offset voltage, low offset voltage drift and excellent common-mode rejection.
Pin configuration:
Features:
| INA122 TA = 25°C VS = 5V RL = 20kΩ |
INA126 TA = 25°C VS = ±15V RL = 25kΩ |
INA128 TA = 25°C VS = ±15V RL = 10kΩ |
|
| Gain [ V/V ] | 5 ÷ 10k | 5 ÷ 10k | 1 ÷ 10k |
|
Nonlinearity ( G=100) [ % FSR ] |
±0.005 | ±0.002 | ±0.0005 |
|
Input Impedance [ GΩ || pF ] |
10 || 3 | 1 || 4 | 10 || 2 |
| Slew Rate [ V/µS ] | +0.08/–0.16 | 0.4 | 4 |
|
Bandwidth, - 3dB ( G=100 ) [ kHz] |
5 | 9 | 200 |
|
CMRR [ dB ] |
90 | 90 | 125 ( G=100 ) |
|
Offset Voltage [ µV ] |
±150 | ±150 | ±25 (G=100) |
|
Voff drift [ nA ] |
±1 | ±0.5 | ±0.2 (G=100) |
|
Input Bias Current [ nA ] |
-10 | -10 | ±2 |
| Noise ( f=1kHz ) | 60 | 35 | 8 |
|
Power Supply [ V ] |
-0.9/+1.3 ~ ±18 | ±1.35 ~ ±18 | ±2.25 ~±18 |
|
Quiescent Current [ µA ] |
60 | ±175 | ±700 |
|
Temperature Range [ °C ] |
-40 ~ +85 | -40 ~ +85 | -40 ~ +85 |
| Package options | PDIP08, SOP08 | PDIP08, SOP08 | PDIP08, SOP08 |
We also reccommend Analog Devices’ instrumentation amplifiers:
AD620ANZ PDIP08 GBW 12MHz, SR 1.2V/us, Voff 0.03mV, +/-2.3÷+/-18V, -40÷85°C
AD620ARZ SOP08 GBW 12MHz, SR 1.2V/us, Voff 0.03mV, +/-2.3÷+/-18V, -40÷85°C
AD623ANZ PDIP08 GBW 2MHz, SR 0.3V/us, Voff 0.025mV, +/-2.5÷+/-6V, -40÷85°C
AD623ARZ SOP08 GBW 2MHz, SR 0.3V/us, Voff 0.025mV, +/-2.5÷+/-6V, -40÷85°C
We recommend instrumentation amplifiers:
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