| Resolution (Bits) | 12 |
| Number of input channels | 4 |
| Sample rate (Max) (kSPS) | 200 |
| Interface type | SPI |
| Architecture | SAR |
| Input type | Single-Ended |
| Multi-channel configuration | Multiplexed |
| Rating | Catalog |
| Reference mode | Ext |
| Input range (Max) (V) | 5.25 |
| Input range (Min) (V) | 0 |
| Operating temperature range (C) | -40 to 85 |
| Power consumption (Typ) (mW) | 1.8 |
| Analog voltage AVDD (Min) (V) | 2.7 |
| SNR (dB) | 72 |
| Analog voltage AVDD (Max) (V) | 5.25 |
| INL (Max) (+/-LSB) | 1 |
| Digital supply (Min) (V) | 2.7 |
| Digital supply (Max) (V) | 5.25 |
- SINGLE SUPPLY: 2.7V to 5V
- 4-CHANNEL SINGLE-ENDED OR 2-CHANNEL DIFFERENTIAL INPUT
- UP TO 200kHz CONVERSION RATE
- ±1LSB MAX INL AND DNL
- NO MISSING CODES
- 72dB SINAD
- SERIAL INTERFACE
- DIP-16 OR SSOP-16 PACKAGE
- ALTERNATE SOURCE FOR MAX1247
- ADS7841ES: +125°C Version
- APPLICATIONS
- DATA ACQUISITION
- TEST AND MEASUREMENT
- INDUSTRIAL PROCESS CONTROL
- PERSONAL DIGITAL ASSISTANTS
- BATTERY-POWERED SYSTEMS
NOTE: (1) ES grade only.
The ADS7841 is a 4-channel, 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface. The resolution is programmable to either 8 bits or 12 bits. Typical power dissipation is 2mW at a 200kHz through-put rate and a +5V supply. The reference voltage (VREF) can be varied between 100mV and VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces power dissipation to under 15uW. The ADS7841 is tested down to 2.7V operation.
Low power, high speed, and on-board multiplexer make the ADS7841 ideal for battery-operated systems such as personal digital assistants, portable multi-channel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS7841 is available in a DIP-16 or a SSOP-16 package and is specified over the \x9640°C to +125°C (1) temperature range.
