NJU9203B/04B datasheet
The NJU9203B/9204B are low‑power‑consumption, high‑performance 3½‑digit single‑chip A/D converters that integrate a voltage reference, oscillator, 7‑segment decoder, display driver and control circuits. The NJU9203B version drives LCD displays directly, while the NJU9204B version drives LEDs directly.
These converters require only a few external components, making them ideal for applications such as digital multimeters, digital thermometers and similar instruments. Features include display‑hold, guaranteed zero reading at zero input, polarity detection, true differential input, and ultra‑low input current.
| Power Dissipation | 300 µW (NJU9203B) / 800 µW (NJU9204B) |
|---|---|
| Operating Current | 0.8 – 1.8 mA (no load) |
| Leakage Current | 10 pA |
| Supply Voltage (NJU9204B) | +6 V |
| Zero Input Reading | Guaranteed 0 reading for 0 input on all scales |
The NJU9203B is designed for direct LCD driving.
It has a very low input current, in the picoampere range.
They are most suited for digital multimeters, digital thermometers and similar devices.
The NJU9204B can be powered up to +6 V.