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:
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.
| Architecture | Current FB |
| Number of channels | 2 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) | 10 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) | 30 |
| GBW (typ) (MHz) | 138 |
| BW at Acl (MHz) | 138 |
| Acl, min spec gain (V/V) | 1 |
| Slew rate (typ) (V/µs) | 1550 |
| Vn at flatband (typ) (nV√Hz) | 2.2 |
| Vn at 1 kHz (typ) (nV√Hz) | 2.2 |
| Iq per channel (typ) (mA) | 7.2 |
| Vos (offset voltage at 25°C) (max) (mV) | 10 |
| Rail-to-rail | No |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| CMRR (typ) (dB) | 67 |
| Input bias current (max) (pA) | 2000000 |
| Offset drift (typ) (µV/°C) | 10 |
| Iout (typ) (mA) | 440 |
| 2nd harmonic (dBc) | 80 |
| 3rd harmonic (dBc) | 77 |
| Frequency of harmonic distortion measurement (MHz) | 1 |
| HSOIC (DDA) | 8 | 29.4 mm² 4.9 x 6 |
| SOIC (D) | 8 | 29.4 mm² 4.9 x 6 |
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