精密低漂移 CMOS 仪表放大器
| Number of channels (#) | 1 |
| Vs (Max) (V) | 5.5 |
| Vs (Min) (V) | 2.7 |
| Input offset (+/-) (Max) (uV) | 100 |
| Gain (Min) (V/V) | 0.1 |
| Gain (Max) (V/V) | 1000 |
| Noise at 1 kHz (Typ) (nV/rt (Hz)) | 33 |
| Features | Cost Optimized |
| CMRR (Min) (dB) | 100 |
| Input offset drift (+/-) (Max) (uV/C) | 0.4 |
| Input bias current (+/-) (Max) (nA) | 2 |
| Iq (Typ) (mA) | 2.4 |
| Bandwidth at min gain (Typ) (MHz) | 0.001 |
| Gain error (+/-) (Max) (%) | 0.2 |
| Operating temperature range (C) | -40 to 85 |
| Type | Resistor |
| Output swing headroom (to negative supply) (Typ) (V) | 0.005 |
| Output swing headroom (to positive supply) (Typ) (V) | -0.005 |
| Input common mode headroom (to negative supply) (Typ) (V) | -0.02 |
| Input common mode headroom (to positive supply) (Typ) (V) | 0.1 |
| Noise at 0.1 Hz-10 Hz (Typ) (uVpp) | 0.8 |
| Gain non-linearity (+/-) (Max) (%) | 0.01 |
- PRECISION
???LOW OFFSET: 100 μV (max)
???LOW OFFSET DRIFT: 0.4 μV/°C (max)
???EXCELLENT LONG-TERM STABILITY
???VERY-LOW 1/f NOISE - TRUE RAIL-TO-RAIL I/O
???INPUT COMMON-MODE RANGE:
??????20mV Below Negative Rail to 100mV Above Positive Rail
???WIDE OUTPUT SWING: Within 10mV of Rails
???SUPPLY RANGE: Single +2.7V to +5.5V - SMALL SIZE
???microPACKAGE: MSOP-8, MSOP-10 - LOW COST
- APPLICATIONS
- LOW-LEVEL TRANSDUCER AMPLIFIER FOR BRIDGES, LOAD CELLS, THERMOCOUPLES
- WIDE DYNAMIC RANGE SENSOR MEASUREMENTS
- HIGH-RESOLUTION TEST SYSTEMS
- WEIGH SCALES
- MULTI-CHANNEL DATA ACQUISITION SYSTEMS
- MEDICAL INSTRUMENTATION
- GENERAL-PURPOSE
The INA326 and INA327 (with shutdown) are high-performance, low-cost, precision instrumentation amplifiers with rail-to-rail input and output. They are true single-supply instrumentation amplifiers with very low DC errors and input common-mode ranges that extends beyond the positive and negative rails. These features make them suitable for applications ranging from general-purpose to high-accuracy.
Excellent long-term stability and very low 1/f noise assure low offset voltage and drift throughout the life of the product.
The INA326 (without shutdown) comes in the MSOP-8 package. The INA327 (with shutdown) is offered in an MSOP-10. Both are specified over the industrial temperature range, ?40°C to +85°C, with operation from ?40°C to +125°C.
