The LT1969 is an adjustable current version of the popular LT1886, a 200mA minimum output current, dual op amp with outstanding distortion performance. The adjustable current feature is highly desirable in applications where minimum power dissipation is required while still being able to provide adequate line termination. At nominal supply current, the amplifiers are gain of 10 stable and can easily be compensated for lower gains. The LT1969 features balanced high impedance inputs with 4µA input bias current and 4mV maximum input offset voltage. Single supply applications are easy to implement and have lower total noise than current feedback amplifier implementations. The output drives a 25Ω load to ±4.3V with ±6V supplies. On ±2.5V supplies, the output swings ±1.5V with a 100Ω load. The amplifier is stable with a 1000pF capacitive load making it useful in buffer and cable driver applications. The LT1969 is manufactured on Line.
The LT1969 is an adjustable‑current version of Linear Technology's LT1886 op‑amp, offering a minimum output current of 200 mA, 700 MHz gain‑bandwidth, and low distortion. It features balanced high‑impedance inputs, low input bias current, and can operate from a single supply as low as +2 V.
Typical applications include DSL mod‑mods, xDSL PCI cards, USB modems, and line drivers. The device is supplied in a thermally enhanced MS10 10‑lead plastic MSOP package and is specified for operation from –40 °C to 85 °C.
| Gain Bandwidth | 700 MHz |
|---|---|
| Input Bias Current | 4 pA |
| Supply Current per Amplifier | 8.25 mA |
The LT1969 has a gain bandwidth of 700 MHz.
The minimum supply voltage guaranteed by PSRR is +2 V.
It is supplied in an MS10 10‑lead plastic MSOP package.
Typical applications include DSL modems, xDSL PCI cards, USB modems, and line drivers.