SLVUDF8 November 2025 PGA854
The PGA854 is a wide-bandwidth, high-voltage, low-noise, programmable gain instrumentation amplifier with differential output. The super-beta input transistors offer low input bias current, which in turn provides a low input current noise density of 0.3pA/√Hz, making the PGA854 a versatile choice for virtually any sensor type. The inputs include a built-in overvoltage protection of ±40V beyond the power supplies. The low-noise current-feedback front-end architecture offers gain flatness at high frequencies, making the PGA854 an excellent high-impedance sensor readout device.
The PGA855 is similar to the PGA854 but offers different gain options. The PGA854 and PGA855 are pin-to-pin compatible and this EVM can be used for both. Table 1-2 outlines jumper and gain configurations.
| A2 (J10) | A1 (J11) | A0 (J12) | PGA854 | PGA855 |
|---|---|---|---|---|
| 0 | 0 | 0 | 0.5 | 0.125 |
| 0 | 0 | 1 | 1 | 0.25 |
| 0 | 1 | 0 | 2 | 0.5 |
| 0 | 1 | 1 | 5 | 1 |
| 1 | 0 | 0 | 10 | 2 |
| 1 | 0 | 1 | 20 | 4 |
| 1 | 1 | 0 | 50 | 8 |
| 1 | 1 | 1 | 100 | 16 |