4 通道、12 位采樣 CMOS 模數(shù)轉(zhuǎn)換器
| Resolution (Bits) | 12 |
| Number of input channels | 4 |
| Sample rate (Max) (kSPS) | 40 |
| Interface type | Parallel, SPI |
| Architecture | SAR |
| Input type | Single-Ended |
| Multi-channel configuration | Multiplexed |
| Rating | Catalog |
| Reference mode | Ext, Int |
| Input range (Max) (V) | 10 |
| Input range (Min) (V) | -10 |
| Operating temperature range (C) | -40 to 85 |
| Power consumption (Typ) (mW) | 50 |
| Analog voltage AVDD (Min) (V) | 4.75 |
| SNR (dB) | 73 |
| Analog voltage AVDD (Max) (V) | 5.25 |
| INL (Max) (+/-LSB) | 0.5 |
| Digital supply (Min) (V) | 4.75 |
| Digital supply (Max) (V) | 5.25 |
- 25μs max SAMPLING AND CONVERSION
- SINGLE +5V SUPPLY OPERATION
- PIN-COMPATIBLE WITH 16-BIT ADS7825
- PARALLEL AND SERIAL DATA OUTPUT
- 28-PIN 0.3" PLASTIC DIP AND SOIC
- ±0.5 LSB max INL AND DNL
- 50mW max POWER DISSIPATION
- 50μW POWER DOWN MODE
- ±10V INPUT RANGE, FOUR CHANNEL MULTIPLEXER
- CONTINUOUS CONVERSION MODE
Note: Recommended Voltage Reference: REF02 and REF102
The ADS7824 can acquire and convert 12 bits to within ±0.5 LSB in 25μs max while consuming only 50mW max. Laser-trimmed scaling resistors provide the standard industrial ±10V input range and channel-to-channel matching of ±0.1%. The ADS7824 is a low-power 12-bit sampling A/D with a four channel input multiplexer, S/H, clock, reference, and a parallel/serial microprocessor interface. It can be configured in a continuous conversion mode to sequentially digitize all four channels. The 28-pin ADS7824 is available in a plastic 0.3" DIP and in a SOIC, both fully specified for operation over the industrial ?40°C to +85°C range.
