| Resolution (Bits) | 8 |
| Number of input channels | 1 |
| Sample rate (Max) (kSPS) | 250 |
| Interface type | SPI, Microwire (Serial I/O) |
| Architecture | SAR |
| Input type | Differential, Single-Ended |
| Rating | Catalog |
| Reference mode | Ext |
| Input range (Max) (V) | 6 |
| Input range (Min) (V) | 0 |
| Operating temperature range (C) | -40 to 85 |
| Power consumption (Typ) (mW) | 8.5 |
| Analog voltage AVDD (Min) (V) | 4.5 |
| SNR (dB) | 48.5 |
| Analog voltage AVDD (Max) (V) | 6 |
| INL (Max) (+/-LSB) | 1 |
| Digital supply (Min) (V) | 4.5 |
| Digital supply (Max) (V) | 6 |
- 3-Wire Serial Digital Data Link Requires Few I/O Pins
- Analog Input Track/Hold Function
- 2-Channel Input Multiplexer Option with Address Logic
- Analog Input Voltage Range from GND to VCC
- No Zero or Full Scale Adjustment Required
- TTL/CMOS Input/Output Compatible
- Superior Pin Compatible Replacement for ADC0831/2
Key Specifications
- Resolution: 8 Bits
- Conversion Time (fC = 2 MHz): 4μs (Max)
- Power Dissipation: 8.5mW (Typ)
- Low Power Mode: 3.0mW (Typ)
- Single Supply: 5VDC
- Total Unadjusted Error: ±1LSB
- No Missing Codes over Temperature
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The ADC08831/ADC08832 are 8-bit successive approximation Analog to Digital converters with 3-wire serial interfaces and a configurable input multiplexer for 2 channels. The serial I/O will interface to COPSfamily of micro-controllers, PLD's, microprocessors, DSP's, or shift registers. The serial I/O is configured to comply with the MICROWIRE serial data exchange standard.
To minimize total power consumption, the ADC08831/ADC08832 automatically go into low power mode whenever they are not performing conversions.
A track/hold function allows the analog voltage at the positive input to vary during the actual A/D conversion.
The analog inputs can be configured to operate in various combinations of single-ended, differential, or pseudo-differential modes. The voltage reference input can be adjusted to allow encoding of small analog voltage spans to the full 8-bits of resolution.