Siliconix LD110/111A
The Siliconix LD110/111(A) (P/N 156-0476-00,156-0476-00,156-1268-00) is a 3½ digit A/D converter monolithic integrated circuit chip set from the mid-1970s.
The LD110 (156-0476-00) is a PMOS digital processor that combines counting, storage, and data multiplexing functions.
The LD111 (156-0477-00) is an analog processor in mixed bipolar and MOSFET technology.
The LD111A (156-1268-00) is a pin-compatible update of the earlier LD111. It eliminated the need for an integrator clamp zener, and offered improved linearity, noise and temperature stability,
Used in
- DM502 – U335 (LD110) and U290 (LD111)
- DM502A – A15U1311 (LD110) and A15U1461 (LD111A)
- DM505 – A10U1201 (LD111A) and A10U1303 (LD110)
Some instruments using part Siliconix LD110/111A
| Instrument | Manufacturer | Class | Model | Description | Introduced |
|---|---|---|---|---|---|
| DM502 | Tektronix | Plug-in | DM502 | basic 3½ digit digital multimeter | 1975 |
| DM502A | Tektronix | Plug-in | DM502A | 3½ digit TRMS digital multimeter | 1980 |
| DM505 | Tektronix | Plug-in | DM505 | basic 3½ digit digital multimeter | 1980 |
Documents
- Siliconix LD110/111A data sheet
- LD110 / LD111 @ radiomuseum.org (listing other instruments using these chips)
- Article about Siliconix LD110/111 from Radio Electronics, June 1975