The INA126 is precision instrumentation amplifiers for accurate, low noise differential-signal acquisition. Their two-op-amp design provides excellent performance with low quiescent current (175 μA/channel). Combined with a wide operating voltage range of ±1.35 V to ±18 V, makes the INA126 ideal for portable instrumentation and data acquisition systems.
Gain can be set from 5 V/V to 10000 V/V with a single external resistor. Laser-trimmed input circuitry provides low offset voltage (250-μV maximum), low offset voltage drift (3-μV/°C maximum), and excellent common-mode rejection.
Single version package options include 8-pin plastic PDIP, SOIC-8, and fine-pitch VSSOP-8 surface-mount. Dual version is available in 16-pin plastic PDIP, SOIC-8, and the space-saving, fine-pitch SSOP-16 surface-mount. All are specified for the –40°C to +85°C industrial temperature range.
Features:-
• Low Quiescent Current: 175 μA/channel
• Wide Supply Range: ±1.35 V to ±18 V
• Low Offset Voltage: 250-μV Maximum
• Low Offset Drift: 3-μV/°C Maximum
• Low Noise: 35 nV/√Hz
• Low Input Bias Current: 25-nA Maximum
• 8-Pin PDIP, SOIC, VSSOP Surface-Mount Dual: 16-Pin PDIP, SOIC, SSOP
Specification:-
| Parameter | Specification |
| Number of channels (#) | 1 |
| Vs (Max) (V) | 36 |
| Vs (Min) (V) | 2.7 |
| Input offset (+/-) (Max) (uV) | 250 |
| Gain (Min) (V/V) | 5 |
| Gain (Max) (V/V) | 10000 |
| Noise at 1 kHz (Typ) (nV/rt (Hz)) | 35 |
| CMRR (Min) (dB) | 83 |
| Input offset drift (+/-) (Max) (uV/C) | 3 |
| Input bias current (+/-) (Max) (nA) | 25 |
| Iq (Typ) (mA) | 0.175 |
| Bandwidth at min gain (Typ) (MHz) | 0.2 |
| Gain error (+/-) (Max) (%) | 0.18 |
| Operating temperature range (C) | -55 to 125 |
| Noise at 0.1 Hz-10 Hz (Typ) (uVpp) | 0.7 |
| Gain non-linearity (+/-) (Max) (%) | 0.002 |
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