500kHz、12 位、6 通道同步采樣模數轉換器
| Resolution (Bits) | 12 |
| Number of input channels | 6 |
| Sample rate (Max) (kSPS) | 500 |
| Interface type | Byte-Wide, Parallel |
| Architecture | SAR |
| Input type | Differential |
| Multi-channel configuration | Simultaneous Sampling |
| Rating | Catalog |
| Reference mode | Ext, Int |
| Input range (Max) (V) | 2.5 |
| Input range (Min) (V) | 0 |
| Operating temperature range (C) | -40 to 85 |
| Power consumption (Typ) (mW) | 50 |
| Analog voltage AVDD (Min) (V) | 4.75 |
| SNR (dB) | 71.1 |
| Analog voltage AVDD (Max) (V) | 5.25 |
| INL (Max) (+/-LSB) | 2 |
| Digital supply (Min) (V) | 4.75 |
| Digital supply (Max) (V) | 5.25 |
- 6 Simultaneous Sampling Channels
- Fully Differential Inputs
- 2μs Total Throughput per Channel
- No Missing Codes
- Parallel Interface
- 1MHz Effective Sampling Rate
- Low Power: 50mW
- 6X FIFO
- APPLICATIONS
- Motor Control
- Multi-Axis Positioning Systems
- 3-Phase Power Control
The ADS7864 is a dual 12-bit, 500kHz analog-to-digital (A/D) converter with 6 fully differential input channels grouped into three pairs for high speed simultaneous signal acquisition. Inputs to the sample-and-hold amplifiers are fully differential and are maintained differential to the input of the A/D converter. This provides excellent common-mode rejection of 80dB at 50kHz which is important in high noise environments.
The ADS7864 offers a parallel interface and control inputs to minimize software overhead. The output data for each channel is available as a 16-bit word (address and data). The ADS7864 is offered in a TQFP-48 package and is fully specified over the -40°C to +85°C operating range.
