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.
| Resolution (Bits) | 12 |
| Sample rate (max) (ksps) | 500 |
| Number of input channels | 6 |
| Interface type | Byte-Wide, Parallel |
| Architecture | SAR |
| Input type | Differential |
| Multichannel configuration | Simultaneous Sampling |
| Rating | Catalog |
| Reference mode | External, Internal |
| Input voltage range (max) (V) | 2.5 |
| Input voltage range (min) (V) | 0 |
| Operating temperature range (°C) | -40 to 85 |
| Power consumption (typ) (mW) | 50 |
| Analog supply (min) (V) | 4.75 |
| Analog supply voltage (max) (V) | 5.25 |
| SNR (dB) | 71.1 |
| Digital supply (min) (V) | 4.75 |
| Digital supply (max) (V) | 5.25 |
| TQFP (PFB) | 48 | 81 mm² 9 x 9 |
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