| Number of channels (#) | 1 |
| Total supply voltage (Min) (+5V=5, +/-5V=10) | 2.5 |
| Total supply voltage (Max) (+5V=5, +/-5V=10) | 5.5 |
| BW @ Acl (MHz) | 36 |
| Acl, min spec gain (V/V) | 1 |
| Slew rate (Typ) (V/us) | 220 |
| Architecture | Fully Differential ADC Driver, Bipolar |
| Vn at flatband (Typ) (nV/rtHz) | 10 |
| Iq per channel (Typ) (mA) | 0.25 |
| Rail-to-rail | Out |
| Vos (offset voltage @ 25 C) (Max) (mV) | 1 |
| Operating temperature range (C) | -40 to 125 |
| | |
| Output current (Typ) (mA) | 26 |
| 2nd harmonic (dBc) | 128 |
| 3rd harmonic (dBc) | 137 |
| Frequency of harmonic distortion measurement (MHz) | 0.001 |
| GBW (Typ) (MHz) | 30 |
| Input bias current (Max) (pA) | 210000 |
| Features | Shutdown |
| CMRR (Typ) (dB) | 116 |
| Rating | Catalog |
- Ultra Low Power:
- Voltage: 2.5 V to 5.5 V
- Current: 250 μA
- Power-Down Mode: 0.5 μA (typical)
- Fully-Differential Architecture
- Bandwidth: 36 MHz
- Slew Rate: 200 V/μs
- THD: –120 dBc at 1 kHz (1 VRMS, RL= 2 k?)
- Input Voltage Noise: 10 nV/√Hz (f = 1 kHz)
- High DC Accuracy:
- VOS Drift: ±4 μV/?C (–40°C to +125°C)
- AOL: 114 dB
- Rail-to-Rail Output (RRO)
- Negative Rail Input (NRI)
- Output Common-Mode Control
The THS4531 is a low-power, fully-differential op amp with input common-mode range below the negative rail and rail-to-rail output. The device is designed for low-power data acquisition systems and high density applications where power consumption and dissipation is critical.
The device features accurate output common-mode control that allows for dc coupling when driving analog-to-digital converters (ADCs). This control, coupled with the input common-mode range below the negative rail and rail-to-rail output, allows for easy interface from single-ended ground-referenced signal sources to successive-approximation registers (SARs), and delta-sigma (ΔΣ) ADCs using only single-supply 2.5 V to 5 V power. The THS4531 is also a valuable tool for general-purpose, low-power differential signal conditioning applications.
The THS4531 is characterized for operation over the extended industrial temperature range from –40°C to +125°C. The following package options are available:
