PGA281 ゼロドリフト・プログラマブル・ゲイン・アンプ |

PGA281 (供給中)


ゼロドリフト・プログラマブル・ゲイン・アンプ - PGA281


The PGA281 is a high-precision instrumentation amplifier with a digitally-controllable gain and signal-integrity test capability. This device uses proprietary autozeroing techniques to offer low offset voltage, near-zero offset and gain drift, excellent linearity, and nearly no 1/f noise.

The PGA281 is optimized to provide an excellent common-mode rejection of greater than 110 dB (G = 1) over a wide frequency range. Superior common-mode and supply rejection supports high-resolution, precise measurement. The 36-V supply capability and wide, high-impedance input range comply with requirements for universal signal measurement.

The PGA281 offers multiple internal gain options from ⅛ V/V (attenuation) to 176 V/V, making this a universal, high-performance, analog front-end suitable for a wide variety of applications. The fully differential, rail-to-rail output is designed to easily interface a wide range of input signals to the low-voltage domain of high-resolution analog-to-digital converters (ADCs).

The PGA281 is available in a TSSOP-16 package and is specified over a temperature range of –40°C to +105°C.


  • Wide Input Range: ±15.5 V at ±18 V Supply
  • Binary Gain Steps: 128 V/V to 1/8 V/V
  • Additional Scaling Factor: 1 V/V and 1 3/8 V/V
  • Low Offset Voltage: 5 µV at G = 128
  • Near-Zero Long-Term Drift of Offset Voltage
  • Near-Zero Gain Drift: 0.5 ppm/°C
  • Excellent Linearity: 1.5 ppm
  • Excellent CMRR: 140 dB
  • High Input Impedance
  • Very Low 1/f Noise
  • Differential Signal Output
  • Overload Detection
  • TSSOP-16 Package


機能一覧 他の製品と比較 プログラマブルと可変ゲイン・アンプ( PGA / VGA )

Number of channels (#)
Vs (Min) (V)
Vs (Max) (V)
BW @ Acl (MHz)
Acl, min spec gain (V/V)
Gain (Max) (dB)
Slew Rate (Typ) (V/us)
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
PGA281 PGA280
PGA     PGA    
1     4    
10     10    
36     36    
6     6    
0.125     0.125    
42     42    
1     1    
-40 to 125     -40 to 125    
TSSOP | 16     TSSOP | 24    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     24TSSOP: 34 mm2: 4.4 x 7.8 (TSSOP | 24)