LF347 / LF353
Operational amplifier in the audio-circuit of the amiga. The LF347 (quad Op.A.) respective LF353 (dual Op.A.) was used in the beginning of the amiga-series and replaced often to the TL082 respective TL084.
These devices are low-cost, high-speed, JFET-input operational amplifiers. They require low supply current yet maintain a large gain-bandwidth product and a fast slew rate. In addition, their matched high-voltage JFET inputs provide very low input bias and offset current.
The LF347 and LF347B can be used in applications such as high-speed integrators, digital-to-analog converters, sample-and-hold circuits, and many other circuits.
| Typ | Commodore-No. | C= Description | C= Info | Form | Editors Info | |
|---|---|---|---|---|---|---|
| A | Dip8 | |||||
| B | 390086-01 | IC LF 347, OP-AMP | AMIGA-500 | Dip14 | ||
| C | 901523-14 | IC LF 347 | AMIGA-2000 | Dip14 | ||
| D | 391632-01 ? | LF353 | SO8 | |||
| E | 391103-01 ? | LF347 | SMD | SO14 |
Alternative-Typ (a.t. Commodore):
| Appearance | Qty. | Typ | Position | Remarks |
|---|---|---|---|---|
| A500 | 1 | B | U14, | as well TL084 |
| A500plus | 1 | B | U14, | as well TL084 |
| A600 | 1 | E | U15, | as well TL084 |
| A1000 | 1 | 347 | U5G, | as well µA4048, µPC4084 |
| A2000 | 1 | C | U56, | - |
| A2000CR | 1 | C | U204, | - |
| CDTV | 2 | 347 | U5, U6, | - |
| CDTV | 1 | 353 | U18, | - |
| A2000 | 1 | C | U56, | - |
| A3000 | 1 | 347 | U402, | - |
| A3000-T | 2 | 347 | U402,U900, | - |
| A1200 | 1 | E | U15, | as well TL084 |
| A4000 | 1 | E | U15, | - |
| A4-T-AV-Modul | 1 | E | U310, | as well TL084 |
| CD32 | 3 | D | U15A,U15B,U38B, | as well TL082 |
| A570 | 1 | 347 | U10, | - |
Pinout
Pinout LF353 and LF347
Downloads / Links
- Dokumentation
- Datasheet LF347 from TI (396kB)
- Datasheet LF353 from TI (541kB)
- more Infos: