Texas Instruments THS4536 Fully Differential Amplifier (FDA)

Texas Instruments THS4536 Fully Differential Amplifier (FDA) is a 60MHz high-precision amplifier designed to drive fully differential Analog-to-Digital Converters (ADCs) up to 2MSPS. This trimmed amplifier features 80MHz gain bandwidth, 20µV (maximum) offset voltage, 0.8μV/°C (maximum) offset drift, and 2.7V to 5.5V supply operating range. The THS4536 amplifier provides higher transient current output drive to meet the needs of Successive Approximation Register (SAR) ADC charge injection and delta-sigma (ΔΣ) ADC precharge buffers. This trimmed amplifier provides package-level trim for offset and offset drift. Typical applications include 16-bit to 20-bit, differential, SAR, and ΔΣ drivers, differential active filters, motor drives, battery testers, and power analyzers.

Features

65MHz (G =1V/V) bandwidth
80MHz gain bandwidth
20µV (maximum) offset voltage
0.8μV/°C (maximum) offset drift
2.7V to 5.5V supply operating range
Low harmonic distortion:
- HD2: 125dBc at 2VPP and 10kHz
- HD3: 114dBc at 2VPP and 10kHz
47V/µs and 57V/µs (rising and falling) slew rate

Low noise:
- 4.3nV/√Hz (2.5kHz 1/f corner) voltage noise
- 70fA/√Hz current noise:
±40pA at 125°C (maximum), low bias and offset current
4.7mA supply current
Negative Rail Input (NRI)
80mV from rails (maximum) Rail-to-Rail Output (RRO)
-40°C to +125°C operating temperature range