ADC0831 serial 8-bit A/D converter pinout
DIP-8. Light and sound sensor converter. HERO Jr U306, read serially through U215.
A serial 8-bit converter with one input. HERO Jr switches the sound or light circuit to it and clocks it from U215 port B. Its reference is a divider from the switched 5 V rail, about 3.79 V, so one step is about 14.8 mV. Pin 3 is grounded for single-ended use. A stuck reading means the converter or its switch transistors.
Open the interactive ADC0831 pinoutPins
| Pin | Name | Type | Signal |
|---|---|---|---|
| 1 | /CS | ctrl | Chip select, active low. HERO Jr: from U215 port B bit 3 ($D841). UNVERIFIED |
| 2 | VIN+ | ctrl | Analog input. HERO Jr: from the sound or light path, through Q308. UNVERIFIED |
| 3 | VIN- | ctrl | Analog input, negative. HERO Jr: tied to ground for single-ended reads. UNVERIFIED |
| 4 | GND | ground | Ground. |
| 5 | VREF | ctrl | Reference. HERO Jr: 1500 ohm to +5SW and 4700 ohm to ground (R354/R355), about 3.79 V. UNVERIFIED |
| 6 | DO | data | Serial data output. HERO Jr: read on U215 port B bit 5 (U215 pin 15, $D841; TM printed p. 22). UNVERIFIED |
| 7 | CLK | clock | Serial clock. HERO Jr: from U215 port B bit 4 (U215 pin 14; TM printed p. 22). UNVERIFIED |
| 8 | VCC | power | +5 V supply on the switched rail (+5SW). |
Fitted in
- HERO Jr U306