The ADA4004-4 is a precision quad amplifier with a voltage noise of 1.8 nV/√Hz. It features low input bias current, high gain, wide bandwidth, and is suitable for precision instrumentation, filter blocks, microphone preamplifiers, industrial control, thermocouples, and RTDs.
The ADA4004-4 is a 1.8 nV/√Hz precision quad amplifier offered in a 16‑lead LFCSP (4 mm × 4 mm) and a 14‑lead narrow SOIC package. It provides ultra‑low offset voltage (40 pV typical), low input bias current (100 nA max), high open‑loop gain (up to 1200 V/V) and a gain‑bandwidth product of 12 MHz. The device operates from +5 V to +15 V and is rated for temperatures from –40 °C to +125 °C.
Typical applications include precision instrumentation, filter blocks, microphone pre‑amplifiers, industrial control, thermocouples/RTDs, and reference buffers. The datasheet supplies detailed pin configurations, absolute maximum ratings, thermal resistance, typical performance curves, and an ordering guide for various package options.
| Voltage Noise Density | 1.8 nV/√Hz |
|---|---|
| Gain Bandwidth Product | 12 MHz |
| Supply Current per Amplifier | 1.8 mA (typ) |
The ADA4004-4 draws about 1.8 mA per amplifier under typical conditions.
It is offered in a 16‑lead LFCSP (4 mm × 4 mm) and a 14‑lead narrow SOIC package.
The absolute maximum supply voltage is +36 V.
The device has a gain‑bandwidth product of 12 MHz.