| Architecture | Current FB |
| Number of channels (#) | 2 |
| Total supply voltage (Min) (+5V=5, +/-5V=10) | 10 |
| Total supply voltage (Max) (+5V=5, +/-5V=10) | 30 |
| GBW (Typ) (MHz) | 138 |
| BW @ Acl (MHz) | 138 |
| Acl, min spec gain (V/V) | 1 |
| Slew rate (Typ) (V/us) | 1550 |
| Vn at flatband (Typ) (nV/rtHz) | 2.2 |
| Vn at 1 kHz (Typ) (nV/rtHz) | 2.2 |
| Iq per channel (Typ) (mA) | 7.2 |
| Vos (offset voltage @ 25 C) (Max) (mV) | 10 |
| Rail-to-rail | No |
| Rating | Catalog |
| Operating temperature range (C) | -40 to 85, 0 to 70 |
| CMRR (Typ) (dB) | 67 |
| Input bias current (Max) (pA) | 2000000 |
| Offset drift (Typ) (uV/C) | 10 |
| Output current (Typ) (mA) | 440 |
| 2nd harmonic (dBc) | 80 |
| 3rd harmonic (dBc) | 77 |
| Frequency of harmonic distortion measurement (MHz) | 1 |
- Low Noise:
- 2.9-pA/√Hz Noninverting Current Noise
- 10.8-pA/√Hz Inverting Current Noise
- 2.2-nV/√Hz Voltage Noise
- 128-MHz , –3-dB BW (RL = 50 Ω, RF= 470 Ω)
- 1550-V/μs Slew Rate (G = 2, RL= 50 Ω)
- High Output Current: 450 mA
- High Speed:
- 128-MHz , –3-dB BW (RL = 50 Ω, RF= 470 Ω)
- 1550-V/μs Slew Rate (G = 2, RL= 50 Ω)
- 26-VPP Output Voltage, RL= 50 Ω
- –80 dBc (1 MHz, 2 VPP, G = 2)
- Wide Output Swing:
- 26-VPP Output Voltage, RL= 50 Ω
- –80 dBc (1 MHz, 2 VPP, G = 2)
- 370-μA Shutdown Supply Current
- Low Distortion:
- –80 dBc (1 MHz, 2 VPP, G = 2)
- 370-μA Shutdown Supply Current
- Low-Power Shutdown Mode (THS3125)
- 370-μA Shutdown Supply Current
- Standard SOIC, HSOP PowerPAD?, and HTSSOP PowerPAD Packages
The THS3122 and THS3125 are low-noise, high-speed current feedback amplifiers, with high output current drive. This makes them ideal for any application that requires low distortion over a wide frequency with heavy loads. The THS3122 and THS3125 can drive four serially-terminated video lines while maintaining a differential gain error less than 0.03%.
The high output drive capability of the THS3122 and THS3125 enables the devices to drive 50-Ω loads with low distortion over a wide range of output voltages:
- –80-dBc THD at 2 VPP
- –75-dBc THD at 8 VPP
The THS3122 and THS3125 operate from ±5-V to ±15-V supply voltages while drawing as little as 7.2?mA of supply current per channel. The THS3125 offers a low-power shutdown mode, reducing the supply current to only 370 μA. The THS3122 and THS3125 are packaged in SOIC, HSOP, and HTSSOP packages.
