| Resolution (Bits) | 12 |
| Number of input channels | 6 |
| Sample rate (Max) (kSPS) | 2000 |
| Interface type | Parallel |
| Architecture | SAR |
| Input type | Differential, Pseudo-Differential |
| Multi-channel configuration | Multiplexed |
| Rating | Catalog |
| Reference mode | Ext, Int |
| Input range (Max) (V) | 5.5 |
| Input range (Min) (V) | 0 |
| Operating temperature range (C) | -40 to 125 |
| Power consumption (Typ) (mW) | 30 |
| Analog voltage AVDD (Min) (V) | 2.7 |
| SNR (dB) | 71.7 |
| Analog voltage AVDD (Max) (V) | 5.5 |
| INL (Max) (+/-LSB) | 1 |
| Digital supply (Min) (V) | 2.7 |
| Digital supply (Max) (V) | 5.5 |
- Six Pseudo- or Four Fully Differential Inputs
- SNR: 71.7dB, THD: –87dB
- Programmable Channel Sequencer
- Programmable and Buffered Internal 2.5V Reference
- Flexible Power-Down Features
- Variable Power-Supply Ranges: 2.7V to 5.5V
- Low-Power Operation: 44mW Maximum at 5V
- Operating Temperature Range:
–40°C to +125°C - Pin-Compatible Upgrade for the ADS7862
The ADS7865 is a dual, 12-bit, 2MSPS analog-to-digital converter (ADC) with four fully differential or six pseudo-differential input channels grouped into two pairs for high-speed, simultaneous signal acquisition. Inputs to the sample-and-hold (S/H) amplifiers are fully differential and are maintained differentially to the input of the ADC. This architecture provides excellent common-mode rejection of 72dB at 100kHz, which is a critical performance characteristic in noisy environments.
The ADS7865 is pin-compatible with the ADS7862, but offers additional features such as a programmable channel sequencer and reference output, flexible supply voltage (2.7V to 5.5V for AVDD and BVDD), a pseudo-differential input multiplexer with three channels per ADC, and several power-down features.
The ADS7865 is offered in a TQFP-32 package. It is specified over the extended operating temperature range of –40°C to +125°C.